Relevant bibliographies by topics / Green pellets

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Green pellets'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Green pellets"

1

Kumar, P. S., B. P. Ravi, O. Sivrikaya, and R. K. Nanda. "The study of pelletizing of mixed hematite and magnetite ores." Science of Sintering 51, no. 1 (2019): 27–38. http://dx.doi.org/10.2298/sos1901027k.

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The present study aims to investigate the use of mixed hematite and magnetite ores in iron ore pellet production. Pelletizing tests were carried out on the hematite and magnetite premixed pellet feed. Drop number and compressive strength tests for green and dry pellets; porosity, compressive strength and reducibility tests for fired pellets were carried out to determine the influence of mixing ratios of both iron oxides on those pellet properties. Experimental results showed that as the hematite content in the mix pellets is increased, the green drop number decreased from 6.5 to 5.2, the green compressive strength decreased from 1.51 to 1.28 kg/pellet and the dry compressive strength decreased from 2.50 to 1.60 kg/pellet. It was determined that fired compressive strength of mix pellets decreased from 380 to 230 kg/pellet when the hematite content in the mixed pellet is increased. The reducibility of mix pellets had almost the same trend and it was faster up to 40 min reduction time. The results showed that the use of hematite together with magnetite is possible to produce pellets with sufficiently good quality in terms of wet, dry and fired mechanical strengths. The porosity and reducibility values of mix pellets were also found to be adequate to use as feed for the blast furnace.
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Kusumoputro, Benyamin, Rozandi Prarizky, Wahidin Wahab, Dede Sutarya, and Li Na. "Assesment of Quality Classification of Green Pellets for Nuclear Power Plants Using Improved Levenberg-Marquardt Algorithm." Advanced Materials Research 608-609 (December 2012): 825–34. http://dx.doi.org/10.4028/www.scientific.net/amr.608-609.825.

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Cylindrical uranium dioxide pellets, which are the main components for nuclear fuel elements in Light Water Reactor, should have a high density profile, uniform shape and quality for the safety used as a reactor fuel component. The quality of green pellets is conventionally monitored through a laboratory measurement of the physical pellets characteristics followed by a graphical chart classification technique. However, this conventional classification method shows some drawbacks, such as the difficulties on its usage, low accuracy and time consuming, and does not have the ability to adress the non-linearity and the complexity of the relationship between the pellet’s quality variables and the pellett’s quality. In this paper, an Improved Levenberg-Marquard based neural networks is used to classify the quality process of the green pellets. Robustness of this learning algorithm is evaluated by comparing its recognition rate to that of the conventional Back Propagation neural learning algorithm. Results show that the Improved Levenberg-Marquard algorithm outperformed the Back Propagation learning algorthm for various percentage of training/testing paradigm, showing that this system could be applied effectively for classification of pellet quality.
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Umadevi, Tekkalakote, Komala Shivanna Sridhara, Munukuntla Raju, Maribasappanavar Basavaraja, Desai Sanghamesh, Sah Rameshwar, and Lokendraraj Singh. "Effect of multi-layer feeding of sized green pelletson bed permeability, structure and properties of fired pellets in straight grate induration furnace." Metallurgical Research & Technology 118, no. 5 (2021): 503. http://dx.doi.org/10.1051/metal/2021061.

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Green pellets while indurating in a straight grate induration furnace, pass through different thermal treatments, namely drying, preheating, heating and cooling. The firing of the pellet bed is downdraft using Corex gas and cooling is updraft using ambient air. Coke breeze is used as solid fuel to supplies the necessary heat for uniform heating of the pellet. The physicochemical conditions prevailing in the indurating furnace, i.e., feeding rate, bed height, pellet size, position of the pellets in the bed, temperature, partial pressure of oxygen, amount of fuel, etc. have bearings on the phases and structures of the fired pellets across the core to the shell. The time difference between the reduction and oxidation of the pellet depends on the size of the pellet as well as position of the pellet in the bed. The pellet size as well as the position of the pellet in the furnace has a marked effect on the formation of different phases and microstructure. Usually, mixed pellets of different sizes varying from 8 to 16 mm pellets are fired in duration furnace. The study was aimed at to optimize the pellet bed with different size range of pellets put in layers to make uniform firing and cooling of the pellets throughout the bed to achieve desired micro-structure and properties. The green pellets were divided into three sizes as A − coarse (–16 + 12.5 mm), B − medium (–12.5+10 mm) and C − small (–10 + 8 mm). The bed permeability of pellet plant induration furnace was 91.7JPU (Japanese Permeability Unit). Except permeability of pellet bed with single layer of smaller size pellets (C-C-C), the bed permeability with three layers, two layers & single layer of different size pellets was similar or greater than the bed permeability of pellet plant. From the results of basket trials conducted at pellet plant, it was found that the layer wise pellets like B-A-C, CA-B, AB-C and B-B-B resulted in higher Tumbler Index (TI) and Cold Crushing Strength (CCS) compared to other different size pellets as layer due to better slag bonding and lower pellet porosity. These pellets were exposed to optimum firing temperature as well as the cooling process with the presence of sufficient oxygen for the conversion of magnetite to hematite.
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Sutarya, Dede, and Benyamin Kusumoputro. "Classification of UO2 Green Pellet Quality Using Intelligent Techniques." Advanced Materials Research 557-559 (July 2012): 2054–64. http://dx.doi.org/10.4028/www.scientific.net/amr.557-559.2054.

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Abstract. Modern production facilities are large and highly complex, and they operate with numerous variables under closed loop control. In the production of green uranium pellets, pellet quality control involves many variables. Therefore, the classification of the quality of pellets is important for improving the efficiency of the production process. Classification of pellet quality using the conventional graphical method has some drawbacks; for example, the scale of the graph affects the accuracy and ease of use. In this paper, intelligent techniques are used to classify the quality of the pressurized water reactors(PWRs) green pellets into three categories according to the guidelines in the quality control manual of the experimental fuel elements laboratory of BATAN. Four features are used for classification, namely, height, volume, weight, density and theoretical density of the pellets. A dataset (150 observations) was collected from one lot of compacted UO2 pellets and was used for training and testing of an ANFIS model. Up to 86.27% of the data can be classified correctly using the ANFIS model. Such performance is comparable to that of artificial neural networks. Thus, this model can be applied effectively for the evaluation and classification of pellet quality.
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Bhuiyan, Iftekhar U., Johanne Mouzon, Birgit Schröppel, Andres Kaech, Illia Dobryden, Seija P. E. Forsmo, and Jonas Hedlund. "Microstructure of Bentonite in Iron Ore Green Pellets." Microscopy and Microanalysis 20, no. 1 (January 7, 2014): 33–41. http://dx.doi.org/10.1017/s1431927613013950.

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AbstractSodium-activated calcium bentonite is used as a binder in iron ore pellets and is known to increase strength of both wet and dry iron ore green pellets. In this article, the microstructure of bentonite in magnetite pellets is revealed for the first time using scanning electron microscopy. The microstructure of bentonite in wet and dry iron ore pellets, as well as in distilled water, was imaged by various imaging techniques (e.g., imaging at low voltage with monochromatic and decelerated beam or low loss backscattered electrons) and cryogenic methods (i.e., high pressure freezing and plunge freezing in liquid ethane). In wet iron ore green pellets, clay tactoids (stacks of parallel primary clay platelets) were very well dispersed and formed a voluminous network occupying the space available between mineral particles. When the pellet was dried, bentonite was drawn to the contact points between the particles and formed solid bridges, which impart strength to the solid compact.
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Liu, Hao, Shihong Peng, Ke Zhang, Yuelin Qin, Fei Meng, Wenchao He, Weiqiang Liu, Min Chen, and Lixiang Yan. "Effect of Finely Ground Limestone and Dolomite on Compression Strength and Reduction Swelling of Vanadium-Titanium Pellets." Materials 14, no. 16 (August 7, 2021): 4433. http://dx.doi.org/10.3390/ma14164433.

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Vanadium−titanium magnetite (VTM) is an important raw material for ironmaking under the situation of increasingly demanding scarce resources. To further improve the metallurgical properties of pellets, and to satisfy the requirements of blast furnace slag basicity, finely ground dolomite and limestone have been added to the pellet. In this study, the effect of finely ground dolomite and limestone on the metallurgical properties (green pellet drop strength, cold compression strength, reduction swelling index, and microscopic mineral structure) of VTM pellets were investigated. With the addition of finely ground dolomite and limestone, the drop strength of the green pellet was improved. The effect of adding finely ground limestone was greater than adding finely ground dolomite. Adding more finely ground dolomite and limestone compared to pellets without limestone and dolomite, the cold compression strength was decreased, which was attributed to the decomposition of limestone and dolomite during the induration of pellets. With the addition of dolomite, the reduction swelling index (RSI) increased firstly and then decreased. When the basicity of the pellet was 0.54 to 0.94, the slag phase with the lowest melting point was formed, corresponding to the maximum of the reduction swelling index. For the pellets with added limestone, the reduction swelling of the pellets deteriorated. The reduction index of the pellets increased and reached the maximum (26.6%) at a basicity of 1.54, which belongs to abnormal swelling.
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Meng, Qing-min, Jia-xin Li, Tie-jun Chun, Xiao-feng He, Ru-fei Wei, Ping Wang, and Hong-ming Long. "Effects of Treated Cow Dung Addition on the Strength of Carbon-Bearing Iron Ore Pellets." Advances in Materials Science and Engineering 2017 (2017): 1–8. http://dx.doi.org/10.1155/2017/1019438.

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It is of particular interest to use biomass as an alternative source of fuel in direct-reduction ironmaking to ease the current reliance on fossil fuel energy. The influence of cow dung addition on the strength of carbon-bearing iron ore pellets composed of cow dung, iron ore, anthracite, and bentonite was investigated, the quality of green and dry pellet was evaluated based on FTIR analysis, and the mechanism of strength variation of the reduced pellets was investigated by analysing the phase composition and microstructure using XRD and SEM. The results show that cow dung addition decreased the green pellet strength due to expansion of the amorphous region of the cellulose in the cow dung; however, the dry pellet strength increased substantially. In the process of reduction roasting, it was found that cow dung addition can promote aggregation of iron crystals and increase the density of the pellets, resulting in increased strength of the reduction roasted pellets, while excessive cow dung addition resulted in lower strength.
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Jovanovic, Vladimir, Dinko Knezevic, Zivko Sekulic, Milan Kragovic, Jovica Stojanovic, Slavica Mihajlovic, Dragana Nisic, Dragan Radulovic, Branislav Ivosevic, and Milan Petrov. "Effects of bentonite binder dosage on the properties of green limestone pellets." Chemical Industry 71, no. 2 (2017): 135–44. http://dx.doi.org/10.2298/hemind160210023j.

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This paper presents the results of tests carried out to determine how the dosage of bentonite added as binder, affects the properties of green pellets made of the limestone fines that originate from Lithothamnium limestone processing. Bentonite was added to limestone in different mass fractions (1, 2.5, 5 and 10%), whereas all the other parameters of the pelletizing process remained constant. The aim of pelletizing was to consolidate limestone fines and form mechanically stable pellets, provided that all the other properties of limestone remain unchanged. The pellets formed in this way were analysed applying DTA/TG analysis and FTIR and SEM analyses. The results showed uniform distribution of bentonite in the pellets, demonstrated that the pellets are compact and there is no formation of new compounds. The pellets were tested for resistance to impact, compressive strength and abrasion resistance. Also disintegration tests were performed to determine the time required for the pellet to disintegrate completely in water. These mechanical properties are essential for transport, handling, storage and general use of pellets. The values of most of the parameters established for pellets with 5% bentonite, meet the standards required for use in agriculture for liming acid soils, however their application is limited because their impact resistance is unsatisfactory and the time required for their complete disintegration in water is extremely short. It should be noted that further increase of bentonite content (over 10%) will not improve the quality of green pellets. In view of the results obtained, it is necessary to introduce drying into the pelletizing process in order to bring the green pellets into solid state.
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Kusumoputro, Benyamin, Dede Sutarya, and Li Na. "Nuclear Power Plant Fuel’s Quality Classification Using Ensemble Back Propagation Neural Networks." Advanced Materials Research 685 (April 2013): 367–71. http://dx.doi.org/10.4028/www.scientific.net/amr.685.367.

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Nuclear power plants fuel production is very crucial and highly complex processes, involving numerous variables. For the safety used in the Light Water Nuclear Reactor, the cylindrical uranium dioxide pellets as the main fuel element should shows uniform shape, uniform quality and a high density profile. Therefore, the assesment of the quality classification of these pellets is important for improving the efficiency of the production process. The quality of green pellets is conventionally monitored through a laboratory measurement of the physical pellets characteristics followed by a graphical chart classification technique. This method, however, is difficult to use and shows low accuracy and time consuming, since its lack of the ability to adress the non-linearity and the complexity of the relationship between the pellet’s quality variables and the pellett’s quality. In this paper, an intelligent technique is develop to classify the pellets quality by using a computational intelligence methods. Instead of a Single Back Propagation neural networks that ussualy used, an Ensemble Back Propagation neural networks is proposed. It is proved in the experimental results that the Ensemble Back Propagation neural networks show higher classification rate compare with that of Single Back Propagation neural networks, showing that this system could be applied effectively for classification of pellet quality in its fabrication process.
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Frodeson, Stefan, Pär Lindén, Gunnar Henriksson, and Jonas Berghel. "Compression of Biomass Substances—A Study on Springback Effects and Color Formation in Pellet Manufacture." Applied Sciences 9, no. 20 (October 14, 2019): 4302. http://dx.doi.org/10.3390/app9204302.

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In order to increase the use of a variated raw material base for pellet production with a maintained density level, knowledge of the biomaterials’ ability to counteract any springback effects is essential. In this study, the springback effects were investigated for single press produced pellets from cellulose, hemicelluloses, pectin, and two woods at different moisture contents. The change in pellet coloring was also tested through a spectrophotometer for both xylan and carboxymethyl cellulose (CMC) pellets. The results show that the density of xylan pellets is much higher than glucomannan, for both green and cured pellets, and that the length of the pellets, as well as springback contribution, differ between the hemicelluloses. The study also presents results showing that both xylan and CMC pellets have a mutually identical spectrum and that the changes in the structure of xylan are not only related to moisture content, but are also pressure-related. The study also postulates that the color difference of the xylan pellets is a result of physical changes in the structure, as opposed to being of a chemical nature.
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Dissertations / Theses on the topic "Green pellets"

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Kalender, Volkan. "Characterization Of Electrolyte And Pyrotechnic Powders And Pellets." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12612959/index.pdf.

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Electrolyte and pyrotechnic pellets are two important components of thermal batteries. Both electrolyte and pyrotechnic pellets are produced by cold compaction of constituent powders. These compacts are integrated in the battery as pellets with sufficient green density, green strength, calorific energy and burning rate (for pyrotechnic only) to provide high performance batteries. In this study, effects of physical properties of the used powders such as particle size distribution, average particle size, particle shape and composition of components and applied compression pressure and their interactions on green density and green strength of electrolyte pellets and in addition, calorific energy and burning rate of pyrotechnic pellets were examined. Statistical experimental designs were constructed to investigate the main and interaction effects of studied variables. 24 two factorial statistically designed experiments&rsquo
results for pyrotechnic pellets exhibited that the compression pressure and iron powder morphology were the most significant factors improving green density and break strength of pyrotechnic pellets. It was shown that the compression pressure had a negative effect on burning rate. Both calorific output and burning rate were increased significantly by increasing KClO4 fraction. In addition, decreasing particle size of KClO4 had also a positive effect on burning rate. The maximum calorific output was obtained at maximum KClO4 fraction. 23 two factorial statistically designed green strength and green density experiments&rsquo
results of electrolyte pellets revealed that, compression pressure was again the dominating factor. Moreover, there was a tendency for higher green density with lower MgO fraction and electrolyte powder average particle size. Besides, the positive effect of decreasing average particle size on green strength was investigated distinctly at low green density values. From the thermal battery perspective, main and interaction effects of variables on the characteristics of electrolyte and pyrotechnic pellets were successfully examined.
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Wennström, Christoffer. "Kontinuerlig temperaturmätning i bädden på gratevagnar." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-66542.

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Luossavaara-Kiirunavaara Aktiebolag (LKAB) är en gruvdriftskoncern med järnmalmsbrytning som huvudsaklig verksamhet. En av produkterna tas fram genom att raffinera järnmalm till pellets vilket är en efterfrågad produkt vid ståltillverkning.   Vid sintring av råkulor till pellets är temperaturen väsentlig för att få så hög oxidation som möjligt av magnetit till hematit och för att få rätt fasthet. För att reglera värmen bör temperaturen mätas bland råkulorna eftersom det är kulornas temperatur som är det viktiga.                                   Projektet går ut på att undersöka möjligheterna att mäta temperatur bland råkulor på gratevagnar som åker genom en pelletsugn med ett permanent mätsystem. Här ställs höga krav på mätsystemet på grund av miljö, portabilitet och drifttid. Miljöanalyser gjordes för att ta reda på vilken påfrestning ett mätsystem bör klara av. Förslag om placering av mätutrustning framtogs genom kartläggning av miljön. En värmeundersökning utfördes av vad hög värme har för påverkan på elektroniska komponenter som kan behövas till ett mätsystem. Det gjordes även en undersökning över vilka komponenter som kan klara av den värme ett mätsystem kan bli utsatt för. Utifrån detta kunde ett prototypmätsystem konstrueras för att mäta temperaturen där ett mätsystem kan placeras på en gratevagn samt för att skapa möjlighet för mätningar med termoelement i bädd. Mätsystemet skapades med trådlös kommunikation, möjlighet till loggning av data och med möjlighet att ansluta tre termoelement av typ S. Olika typer av trådlös kommunikation utvärderades för att se vad som kan vara mest lämpat med tanke på miljö, räckvidd, strålning och strömförbrukning. Strömförsörjning undersöktes för att hitta den mest lämpade strömförsörjningen med längst drifttid och högst funktionalitet. En utredning gjordes för att hitta monteringsmöjligheter av ett mätsystem på en gratevagn. Värmeavskärmning och isolering undersöktes för att få ner temperaturen i kapslingen och för elektroniken i ett mätsystem. Några olika temperaturgivare granskades för att hitta en som klarar av att mäta temperaturer upp till 1500°C och som fysiskt kan monteras på en gratevagn.
Luossavaara-Kiirunavaara Aktiebolag (LKAB) is a mining group with iron ore mining as the main business. One of the products is produced by refining iron ore to iron pellets, which is a quality and environmentally clever product  in steel production.                                     When iron pellets are produced by roasting green pellets the temperature is very important. The goal is to get as much oxidation as possible from hematite to magnetite and to get correct mechanical properties. To control the process it’s important to know the temperature of the green pellets specifically and not the surrounding mechanical structure, ceramics lining in the furnace and the influence from radiation.   The goal of the project is to examine possibilities to measure temperature with a permanent measurement system of green pellets which are transported on grate cars trough pellet plant. The measurement system has to meet some requirements of environment, portability and operating time. Analysis of the environment has been made to get specification of what a measurement system has to withstand. Proposition about assembly location has been investigated by analysis of the environment. A thermal analysis has been made of electronic components, especially electronic components that can be used in a measurement system. A analysis has also been made of which electronic components that are suited for a measurement system and can withstand the heat. A development measurement system has been developed from the results of the analysis. The system has been constructed to measure the temperature of what a system can be exposed of on a grate car. This with wireless and data-logging support and future measurements possibilities with three thermocouples of type S.   Wireless data transfer was examined to see what type is most suited for the task with knowledge of environment, transmission range, radiation and power consumption. Power sources was examined to find a power source with longest working time and highest functionality. Heat insulation and reflective materials has been investigated with the goal to get the temperature in the system enclosure as low as possible. Some different types of temperature sensors that can measure temperatures up to 1500°C and which can be mounted on a grate car has been evaluated.
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Forsmo, Seija. "Influence of green pellet properties on pelletizing of magnetite iron ore/." Luleå : Division of Process Metallurgy, Department of Chemical Engineering and Geosciences, Luleå University of Technology, 2007. http://epubl.ltu.se/1402-1544/2007/14/.

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貴保, 藤浦, and Takayasu Fujiura. "天然長繊維強化熱可塑性生分解樹脂複合材料における成形プロセス最適化に関する研究." Thesis, https://doors.doshisha.ac.jp/opac/opac_link/bibid/BB12936621/?lang=0, 2015. https://doors.doshisha.ac.jp/opac/opac_link/bibid/BB12936621/?lang=0.

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従来型の繊維強化プラスチック(FRP)に対し環境負荷の少ない「グリーンコンポジット」の実用的な成形プロセスの確立が切望されている。本研究では、天然繊維およびポリ乳酸を原料とする長繊維強化樹脂(LFT)ペレット製造および射出成形による複合材製造法を対象に、複合材の力学的特性に対する繊維の含有水分や熱劣化の影響、繊維分散の効果等を把握し、高い特性を発揮させるための成形プロセスおよび諸条件を提示した。
'Green Composites' have been attracting attention due to their high sustainability and carbon neutrality. This study investigated the preparation process for composites of long jute fiber reinforced polylactic acid by LFT-pellet manufacturing method followed by injection molding. The author explored effect of several factors, such as moisture in fiber, heat decomposition of fiber at processing and the level of fiber dispersion in matrix resin, on mechanical properties of composites. The author eventually proposed the optimized process and operating windows for attaining higher mechanical properties of composites.
博士(工学)
Doctor of Philosophy in Engineering
同志社大学
Doshisha University
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5

Romanová, Kristýna. "Proteomická identifikace enzymů degradující rostlinnou biomasu." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2011. http://www.nusl.cz/ntk/nusl-216797.

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The theoretical part of work is focused on the issue of biomass which can be used for energy purposes, inparticular agricultural waste, as well as can serve as a substrate for biogas station. It also deals with proteomics, its goals and approaches, separation methods. The aim of this work was to measure each sample of enzyme activity of biomass, which are used as a raw materials for biogas plants and their proteomic identification.
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Huang, Yu-Ling, and 黃玉鈴. "Development of multiple unit pellet system (MUPS) tablets containing green tea powder and green tea extracts and evaluation of its physical properties." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/20967461404455399601.

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碩士
國立中興大學
食品暨應用生物科技學系所
103
In development of health food, the use of dosage forms, formulation and process will influence the bioavailability of the active ingredients. How to combine multifunctional pellets with controlled release properties to enhance the bioavailability of the active ingredients is the target of developing dosage forms. In this study, we provided a physical barrier by microcapsules and tablets, and to improve the stability of catechin during processing also to mask the bitter taste under high dosage levels. Using different combination of starch, sodium alginate and chitosan to prepare matrix tablets, and evaluate its physical properties and simulating its release characteristics. This experiment results applied to develop the MUPS tablets with combination of hydrogel beads. Results were as follow: With the amount of green tea powder increase, the particle size of hydrogel beads increased, moisture content and hardness decreased. Heating the functional hydrogel beads comprising green tea powder and tea polyphenols at 80℃ 5 minutes, the releasing amount of catechins were EGC 54.51%, EC 69.64%, EGCG 52.33% and ECG 51.26%. Matrix tablets prepared with sodium alginate, chitosan and corn starch will form a specific protective layer under the simulated gastrointestinal tract process. In two hours treatment under the stomach, the releasing amounts were 4.05%. And after 24 hours, the cumulative release amounts were 63.33%, with the remaining mass of 48.19% and the swelling ratio of 298.79 %. This release profile fit with the zero-order kinetics (r2 = 0.96), and with Korsmeyer-Peppas module to explore its release form, n value were 1.29 which belong to CaseⅡ transport (r2 = 0.96). Hardness of GTEPAC matrix tablets comprising green tea powder, green tea extract, sodium alginate and chitosan was 2.03 kgf, disintegration time of 36.56 minutes, friability of 0.69% and 2.91% of the weight variance. Tablets’s remaining mass was 47.22% and swelling ratio was 303.59%, after treated in simulated gastrointestinal for 24 hours. Catechin contents of the tablets showed as follow: EGC 15.17 mg / g, EC 12.66 mg / g, EGCG 125.23 mg / g and ECG25.27 mg / g, in line with the domestic GMP standard of catechin-containing functional food. Hope this research results can be provided as references for future manufacture of matrix tablets with controlled-release ability in health food, and creating a more diversified market value in health food industry.
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Silva, Ana Carolina Santiago Oliveira e. "Transaction cost theory application: the case of Yser Green Energy SA." Master's thesis, 2019. http://hdl.handle.net/10773/27696.

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Acknowledge the beneficial effects on the environment by replacing fossil fuels with wood pellets, this study aims, in the context of a pellet producer, to analyse the transaction costs of the entire process of working the entire process for biomass transformation in pellets, from raw materials to processing. This study analyses the value chain of the company, applying the Transaction Cost Theory and trying to understand if there is a viable application and what are the transaction costs present in the company. The results of this study agree with others carried out under the same theme, supporting the viability of vertical integration and the sustainability of the pellet production industry.
Adquirindo os efeitos benéficos ao meio ambiente substituindo combustíveis fósseis por pellets de madeira, este projeto visa, no contexto de um produtor de pellets, analisar os custos de transação de todo o processo de trabalho de todo o processo na empresa para a transformação de biomassa em pellets, desde a matérias-prima até ao seu processamento. Este estudo analisa a cadeia de valor da empresa, aplicando a Teoria dos Custos de Transação e tentando entender se existe uma aplicação viável e quais os custos de trnsação presentes na empresa. Os resultados deste estudo vão ao encontro de outros realizados dentro do mesmo tema, apoiando a viabilidade da integração vertical e a sustentabilidade da industria de produção de pellets.
Mestrado em Economia
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Books on the topic "Green pellets"

1

Döring, Stefan. Power from Pellets: Technology and Applications. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013.

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Hoyo, Javier del. Asta ac pellege: 50 años de la publicación de Inscripciones hispanas en verso, de S. Mariner. Madrid: Signifer Libros, 2002.

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Döring, Stefan. Power from Pellets: Technology and Applications. Springer, 2016.

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Bois, Claude. TOWARD ZERO WASTE CATS I Green Pellet or Permanent Sand Litter to Reduce Ecological Footprint. Independently Published, 2020.

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Book chapters on the topic "Green pellets"

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Bhagat, Ram Pravesh. "Induration of Green Pellets." In Agglomeration of Iron Ores, 335–60. Boca Raton : CRC Press, Taylor & Francis, 2019.: CRC Press, 2019. http://dx.doi.org/10.1201/9781315269504-14.

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Bhagat, Ram Pravesh. "Quality of Green Pellets." In Agglomeration of Iron Ores, 327–34. Boca Raton : CRC Press, Taylor & Francis, 2019.: CRC Press, 2019. http://dx.doi.org/10.1201/9781315269504-13.

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Meek, Thomas T., K. Gwathney, Chaitanya K. Narula, and L. R. Walker. "High Density Green Pellets of ZrN Fabricated by Particle Processing." In Ceramic Transactions Series, 21–25. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2010. http://dx.doi.org/10.1002/9780470599730.ch3.

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Kumar, Manoj, Amit Kumar Rawat, Anand Sonkar, Amar Kumar, Anusha Azhar, Mallika Kumar, and Mohammad Mujahid Ali Khan. "Pellet Biochar: An Environmental Remedy." In Green Chemistry in Environmental Sustainability and Chemical Education, 73–79. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-8390-7_7.

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Malik, Bisma, Tanveer Bilal Pirzadah, Sheikh Tajamul Islam, Inayatullah Tahir, Manoj Kumar, and Reiaz ul Rehman. "Biomass Pellet Technology: A Green Approach for Sustainable Development." In Agricultural Biomass Based Potential Materials, 403–33. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-13847-3_19.

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Yamanaka, C., S. Nakai, T. Yamanaka, Y. Izawa, K. Mima, K. Nishihara, Y. Kato, et al. "Pellet Implosion and Interaction Studies by Gekko XII Green Laser." In Laser Interaction and Related Plasma Phenomena, 395–419. Boston, MA: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4615-7335-7_30.

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Rutzke, Corinne J., and Michael A. Rutzke. "Heating in the Northeastern USA with a Biomass Pellet Stove: Lessons Learned in a Rural Residential Setting." In Green Energy and Technology, 269–83. New Delhi: Springer India, 2020. http://dx.doi.org/10.1007/978-81-322-3965-9_12.

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Mohammad Nadeem, Haider Banka, and R. Venugopal. "Comparison of Multilayer Perceptron (MLP) and Support Vector Machine (SVM) in Predicting Green Pellet Characteristics of Manganese Concentrate." In Advances in Intelligent Systems and Computing, 311–20. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-0448-3_25.

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Wohl, Ellen. "May: Plugging the Nutrient Leaks." In Saving the Dammed. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780190943523.003.0008.

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Just when spring appears to have arrived, a late-season storm blows down from the north. Despite the overcast sky, the temperature at first is beguilingly warm. Rain starts to fall, then changes to sleet as the temperature drops. “Rough winds do shake the darling buds of May,” indeed. The sleet becomes graupel—crusty, rounded pellets of snow—and then wet flakes. Blobs of slush fall from overhanging branches and float briefly down the creek before melting and dispersing. Pulses of wind and snow gust in as birds shelter silently among the densely needled branches of big spruce trees. The moose that has spent the winter around the beaver meadow lies calmly in a protected spot at the base of a spruce. A foot of snow obliterates the newly green shoots of grass. I see no outward indication of it, but perhaps, in the warm darkness of the lodge, the beaver kits have been born. They start small, only about a pound at birth, but they are born fully furred, with open eyes and incisors erupted, almost ready to get down to the business of chewing branches. Each year’s litter is born in May or early June. Usually two to four kits are born, but a litter can be a single kit or as many as eight kits. Baby food for beavers is herbaceous vegetation, which the kits start eating within two weeks. By the end of July or early August the kits will be weaned and able to forage on their own. A varied diet of vegetation allows them to reach a weight of 10 to 16 pounds by the time the ice returns. The first year is a grace period for the new kits. Unlike the yearlings, the kits do not help maintain the lodge or cache food against the lean days of winter. They simply get to enjoy life and explore the wondrous new world into which they have been born. Diverse human observers watching this exploration by young beavers have interpreted their activities as an expression of joy.
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Fox, Michael H. "Nuclear Waste." In Why We Need Nuclear Power. Oxford University Press, 2014. http://dx.doi.org/10.1093/oso/9780199344574.003.0016.

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I gazed over the railing into the crystal clear cooling pool glowing with blue Cherenkov light caused by particulate radiation traveling faster than the speed of light in water. I can see a matrix of square objects through the water, filling more than half of the pool. It looks like you could take a quick dip into the water, like an indoor swimming pool, but that would not be a good idea! It is amazing to think that this pool, about the size of a ranch house, is holding all of the spent fuel from powering the Wolf Creek nuclear reactor in Burlington, Kansas, for 27 years. The reactor was just refueled about a month before my visit, so 80 of the used fuel rod assemblies were removed from the reactor and replaced with new ones. The used fuel rods were moved underwater into the cooling pool, joining the approximately 1,500 already there. There is sufficient space for the next 15 years of reactor operation. There is no danger from standing at the edge of this pool looking in, though the levels of radon tend to be somewhat elevated and may electrostatically attach to my hard hat, as indeed some did. What I am gazing at is what has stirred much of the controversy over nuclear power and is what must ultimately be dealt with if nuclear power is to grow in the future—the spent nuclear fuel waste associated with nuclear power. What is the hidden danger that I am staring at? Am I looking at the unleashed power of Hephaestus, the mythical Greek god of fi re and metallurgy? Or is this a more benign product of energy production that can be managed safely? What exactly is in this waste? And is it really waste, or is it a resource? To answer that question, we have to understand the fuel that reactors burn. The fuel rods that provide the heat from nuclear fission in a nuclear reactor contain fuel pellets of uranium, an element that has an atomic number of 92 (the number of protons and also the number of electrons).
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Conference papers on the topic "Green pellets"

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Sharma, Vyas Mani, Debanjan Maity, Vikranth Racherla, and Surjya Kanta Pal. "Friction Sintering of Copper Powder Using a New Rapid, Cost Effective and Energy Efficient Process." In ASME 2018 13th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/msec2018-6684.

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Dendritic electrolytic copper powder was sintered using a newly developed friction sintering process. Green copper pellets of 14 mm height and 16 mm diameter were prepared at room temperature with 5-ton load and 60 seconds holding time. The pellets were sintered using a newly developed rapid, cost-effective, energy efficient, green friction sintering process that allows for easy and quick removal of sintered products. An aluminum plate of 14 mm thickness and 16.1 mm diameter through hole was used to hold green pellets during sintering. Frictional heat and pressure were applied on a top plate through a rotating 18 mm diameter, flat shoulder, WC tool. Sintering was performed at 12 kN axial load and 800 rpm tool rotational speed. Sintering temperatures were measured using K-type thermocouples. SEM (scanning electron microscope) images of fractured surfaces for sintered pellets show neck formation between copper particles. The neck formation is approximately uniform throughout the depth. This is in-line with hardness results along the thickness of the pellet. The process holds promise particularly for solid-state sintering of metal based powders.
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Kruglov, Vasiliy N., and Artem V. Kruglov. "Application of the machine vision system “GRANICS-PELLETS” for grain-size analysis of green ore pellets." In CENTRAL EUROPEAN SYMPOSIUM ON THERMOPHYSICS 2019 (CEST). AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5114188.

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Thurley, Matthew. "On-line 3D surface measurement of iron ore green pellets." In 2006 International Conference on Computational Inteligence for Modelling Control and Automation and International Conference on Intelligent Agents Web Technologies and International Commerce (CIMCA'06). IEEE, 2006. http://dx.doi.org/10.1109/cimca.2006.159.

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Buliah, Norman, Shariza Jamek, Azilah Ajit, and Rohana Abu. "Production of dairy cow pellets from pineapple leaf waste." In 6TH INTERNATIONAL CONFERENCE ON ENVIRONMENT (ICENV2018): Empowering Environment and Sustainable Engineering Nexus Through Green Technology. AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5117108.

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Moghimi, Mohammad, Rassoul Amirfattahi, and Mohammad Khodabandeh Samani. "A new algorithm for segmenting overlapped green pellets to improve automatic pelletizing process." In 2017 10th Iranian Conference on Machine Vision and Image Processing (MVIP). IEEE, 2017. http://dx.doi.org/10.1109/iranianmvip.2017.8342373.

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Liu, Xiahui, Jian Wang, Cuntao Wang, Weiguang Song, and Yuqiu Yang. "Low Cycle Fatigue Property of Injection Molded Jute/PP Composites." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-63356.

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Green composites are biocomposites where both matrix and reinforcement derive from renewable or recycle resources and have attracted much attention in recent years. In particular, jute/polypropylene (PP) is one of the good choices of green composites. Further, investigation of long-term behavior of composite is an importance in designing in composite structures. However, so far, very few research works focus on the fatigue property of injection molded jute/PP fabricated by long fiber pellets (LFT). In this study, the pultrusion technique was adopted to prepare LFT pellets for injection molding and LFT dumbbell specimens with different jute fiber weight percent of 10, 20, 30, 40, and 50 percent were molded. Low cycle fatigue property of injection molded jute/PP composites was investigated by tensile test. Different cycle times of 30, 60 and 100 were adopted to evaluate the effect of cycle times and fiber content on the fatigue property of injection molded jute/PP composites.
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Deraman, M., Awitdrus, I. A. Talib, R. Omar, M. H. Jumali, M. M. Ishak, S. K. M. Saad, et al. "Electrical Conductivity Of Carbon Pellets Prepared From Mixtures Of Pyropolymers From Oil Palm Bunches and Petroleum Green Coke." In THE 4TH ASIAN PHYSICS SYMPOSIUM—AN INTERNATIONAL SYMPOSIUM. AIP, 2010. http://dx.doi.org/10.1063/1.4757187.

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Pandey, A. K., S. Shahabuddin, Jesbains Kaur, R. Saidur, Muhammad Shakeel Ahmad, Nasrudin Abd Rahim, and Sahar Tariq. "Preparation of Fuel Pellets and Extraction of Natural Dyesfrom Falling Leaves to be used as Sensitizer in Dye Sensitized Solar Cell." In 2018 International Conference and Utility Exhibition on Green Energy for Sustainable Development (ICUE). IEEE, 2018. http://dx.doi.org/10.23919/icue-gesd.2018.8635724.

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Deraman, Mohamad, Siti Khatijah Md Saad, Maria M. Ishak, Awitdrus, Erman Taer, Ibrahim Talib, Ramli Omar, Mohammad Hafizuddin Hj Jumali, Mikrajuddin Abdullah, and Khairurrijal. "Carbon∕Carbon Nanotubes (CNTs) Composites from Green Pellets Contain CNTs and Self-adhesive Carbon Grains from Fibres of Oil Palm Empty Fruit Bunch." In THE THIRD NANOSCIENCE AND NANOTECHNOLOGY SYMPOSIUM 2010 (NNSB2010). AIP, 2010. http://dx.doi.org/10.1063/1.3515546.

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Islam, Md Mashfiqul, Ahmed A. Gheni, and Mohamed A. ElGawady. "Fresh and Mechanical Properties of Zero-Cement One-Part Geopolymer Mortar and Concrete." In IABSE Congress, New York, New York 2019: The Evolving Metropolis. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2019. http://dx.doi.org/10.2749/newyork.2019.2795.

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<p>The era of research on fly ash based Zero-Cement (ZC) containing alkali activated geopolymer mortar and concrete has already begun. By replacing 100% of cement which is the higher carbon footprint material and also by maintaining a steady level on eco-system without causing severe environmental damage or exhausting natural resources, geopolymer technology is on the way to be the most popular sustainable construction material. However, the mixing mechanism of geopolymer is very difficult using the liquid alkaline activators which are hazardous as well as difficult to handle in large construction works at sites. As a result, the development of producing one-part geopolymer or “just add water” process similar to ordinary</p><p>Portland cement (OPC) construction, is necessary for the promotion of this green and sustainable</p><p>construction material to the society. To this end, two different sources of Class C fly ash (FA) from Missouri State, USA are used in this study to investigate the mechanical as well as the fresh properties of ZC mortar and concrete. In this study, the dry sodium hydroxide (SH) pellets and sodium silicate (SS) powder are used as solid alkaline activators. Three different curing systems, e.g. ambient, oven and steam curing are employed in this study and corresponding strength gains are evaluated. A significant enhancement of the compressive strength was achieved by the addition of 1.9 mass% of sucrose (sugar) with respect to FA in the mix after curing at the elevated temperature.</p>
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