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Thematische Bibliographien / Iron ore pelletising plant / Zeitschriftenartikel

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Zeitschriftenartikel zum Thema „Iron ore pelletising plant“

Autor: Grafiati

Veröffentlicht am 25. Juni 2021

Zuletzt aktualisiert am 12. Februar 2022

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1

Džupková, Martina, Mária Fröhlichová, Jaroslav Legemza, Róbert Findorák und Jozef Hudák. „Influence of Biomass Absorptivity on the Process of Sinter Charge Pelletisation“. Applied Sciences 10, Nr. 19 (27.09.2020): 6780. http://dx.doi.org/10.3390/app10196780.

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Capillary water absorption of materials is a very important factor in the process of pre-treatment of fine-grained materials. Materials that are in a moisturized state capable of forming a firm, compact pellet are, thanks to this particular physical property, suitable for utilisation in sinter charge preparation within the process of sintering iron-ore raw materials. The pelletising ability of coke dust is generally known and coke dust exhibits good pelletisability. From the ecological point of view, an alternative to coke dust is currently biomass, which has a great potential for industrial applications, including use in the agglomeration process. Understanding of how biomass behaves during pre-pelletisation is very important and for the sintering process, it is essential. The purpose of pre-pelletisation of the sinter charge is to achieve its optimal permeability in the sintering process. The experiment described in the article was carried out using wood biomass—oak and pine sawdust, as well as plant biomass—Miscanthus sinensis and Lavandula angustifolia. The evaluation was carried out by applying the capillary water absorption test and the free-fall drop test. As different types of biomass have different chemical compositions, heating capacities, grain morphologies, and chemical and physical properties, the testing was carried out with several types of biomass. The capillary water absorption was examined in terms of different granulometries, and the impact of the type of liquid medium was analysed. It was observed that different types of biomass differ in their ability to absorb liquids. Another finding was that the type of a liquid medium had a significant effect on the pelletising ability of biomass, which was determined by the surface tension and the ability to form liquid bridges between the grains. Research results indicate an excellent pelletising ability of the Miscanthus sinensis grass. The wettability of oak and pine sawdust determines its application in the pelletising process. It may be concluded, based on the research, that Lavandula angustifolia is not a suitable alternative to coke dust due to its low ability to form pellets.

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2

Fan, X.-H., M. Gan, T. Jiang, X.-L. Chen und L.-S. Yuan. „Decreasing bentonite dosage during iron ore pelletising“. Ironmaking & Steelmaking 38, Nr. 8 (November 2011): 597–601. http://dx.doi.org/10.1179/1743281211y.0000000029.

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3

Nilsson, E. A. A., R. Tegman und M. L. Antti. „Thermal cycling of grate-link material for iron ore pelletising process“. Ironmaking & Steelmaking 44, Nr. 4 (26.07.2016): 269–80. http://dx.doi.org/10.1080/03019233.2016.1210404.

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4

Croft, T. N., M. Cross, A. K. Slone, A. J. Williams, C. R. Bennett, P. Blot, M. Bannear und R. Jones. „CFD analysis of an induration cooler on an iron ore grate-kiln pelletising process“. Minerals Engineering 22, Nr. 9-10 (August 2009): 859–73. http://dx.doi.org/10.1016/j.mineng.2009.03.011.

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5

Pownceby, M. I., und J. M. F. Clout. „Importance of fine ore chemical composition and high temperature phase relations: applications to iron ore sintering and pelletising“. Mineral Processing and Extractive Metallurgy 112, Nr. 1 (April 2003): 44–51. http://dx.doi.org/10.1179/037195503225011402.

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6

Garza-Reyes, Jose Arturo, Mustafa Al-Balushi, Jiju Antony und Vikas Kumar. „A Lean Six Sigma framework for the reduction of ship loading commercial time in the iron ore pelletising industry“. Production Planning & Control 27, Nr. 13 (15.05.2016): 1092–111. http://dx.doi.org/10.1080/09537287.2016.1185188.

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7

Krishna, S. J. G., C. Rudrappa, B. P. Ravi und M. V. Rudramuniyappa. „Optimization of an Iron Ore Washing Plant“. Procedia Earth and Planetary Science 11 (2015): 111–14. http://dx.doi.org/10.1016/j.proeps.2015.06.014.

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8

Arbeithuber, C., H. P. Jörgl und H. Raml. „Fuzzy control of an iron ore sintering plant“. Control Engineering Practice 3, Nr. 12 (Dezember 1995): 1669–74. http://dx.doi.org/10.1016/0967-0661(95)00179-x.

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9

Umadevi, T., A. Brahmacharyulu, P. Karthik, P. C. Mahapatra, M. Prabhu und M. Ranjan. „Recycling of steel plant mill scale via iron ore sintering plant“. Ironmaking & Steelmaking 39, Nr. 3 (April 2012): 222–27. http://dx.doi.org/10.1179/1743281211y.0000000063.

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10

Arbeithuber, C., H. P. Jörgl und H. Aberl. „Fuzzy Control of an Iron Ore Sinter Plant 1“. IFAC Proceedings Volumes 27, Nr. 11 (September 1994): 129–33. http://dx.doi.org/10.1016/s1474-6670(17)47635-x.

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11

Dixit, P., D. Makhija, A. K. Mukherjee, V. Singh, A. Bhatanagar und R. K. Rath. „Characterization and Beneficiation of Dry Iron Ore Processing Plant Reject Fines to Produce Sinter/Pellet Grade Iron Ore Concentrate“. Mining, Metallurgy & Exploration 36, Nr. 2 (18.09.2018): 451–62. http://dx.doi.org/10.1007/s42461-018-0006-x.

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12

Kasama, Shunji, Hisatsugu Kitaguchi, Yuichi Yamamura, Kazuomi Watanabe und Akifumi Umezu. „Analysis of Exhaust Gas Visibility in Iron Ore Sintering Plant“. ISIJ International 46, Nr. 7 (2006): 1027–32. http://dx.doi.org/10.2355/isijinternational.46.1027.

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13

Boscolo, M., und E. Padoano. „Investigations into dioxin emissions at Italian iron ore sintering plant“. Ironmaking & Steelmaking 35, Nr. 5 (Juli 2008): 338–42. http://dx.doi.org/10.1179/174328108x287739.

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14

Tuckey, K. R. G. „Intelligent selection of engineered wear linings in iron ore plant“. Mineral Processing and Extractive Metallurgy 112, Nr. 1 (April 2003): 33–38. http://dx.doi.org/10.1179/037195503225011420.

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15

Das, Daisy, und Barun Kumar Nandi. „Treatment of iron ore beneficiation plant process water by electrocoagulation“. Arabian Journal of Chemistry 14, Nr. 1 (Januar 2021): 102902. http://dx.doi.org/10.1016/j.arabjc.2020.11.008.

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16

Bajraktari-Gashi, Zarife, Muharrem Zabeli und Behram Halilaj. „Key Metallurgical Parameters of Fe-Ni Production During 1984–1997 and 2007–2017 at the Ferronickel Smelter in Drenas“. Materials and Geoenvironment 67, Nr. 2 (10.08.2020): 73–77. http://dx.doi.org/10.2478/rmzmag-2020-0008.

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AbstractDuring 1984–1997, the ferronickel plant in Drenas used iron-nickel ore from the mines of the Republic of Kosovo: Glavica and Çikatove (Dushkaje and Suke) mines. However, during the years 2007–2017, when the plant started operating from the cessation of production, which was from 1998 to 2007, some types of iron-nickel ores from different countries began to be used, starting from iron-nickel ores from Kosovo, iron-nickel ores from Albania, ores from Indonesia, ores from the Philippines, ores from Guatemala, ores from Turkey and ores from Macedonia. The ore composition, however, is mainly oxide-laterite ore. Iron-nickel ores in the plant are characterised by high moisture content, a very important factor influencing the process of scraping the charge in rotary kilns and presenting in general. Among the iron-nickel ore used in the ferronickel plant, the ores from Albania are characterised due to their low moisture content when compared with the other ores as well as the high content of iron oxides, which affect the temperature rise inside the furnaces, as the iron ores play an important role in the pre-casting process in rotary kilns.

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17

Ribeiro, José Pancrácio, und Claudio Henrique T. Ribeiro. „New mega-sized wet high intensity magnetic separator: a cost-effective solution to reclaim iron ore fines from tailing dams“. Rem: Revista Escola de Minas 66, Nr. 4 (Dezember 2013): 529–33. http://dx.doi.org/10.1590/s0370-44672013000400019.

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Ten years of continuous research and development have led to a major improvement in the field of iron ore Wet High Intensity Magnetic Separation - WHIMS. With this cutting-edge technology, Gaustec has established a new world record in this class of Magnetic Separators, by providing a sheer feed rate of up to 1400 tph for iron ore fines. Although low-grade iron ore mines will benefit from this new technology, focused on herein is the reclaiming of low-grade iron ore tailing from ponds, having in mind its huge positive environment impact and business opportunity. Based on this newly developed technology, the construction in Brazil of a Concentration Plant started in 2012 for dressing iron ore tailings at 45% Fe grade, at Itaminas Mine. This plant went into operation this year. Based on the good performance of this first unit, the construction of a second Concentration Plant of the same type, to further reduce to 18% Fe in the tailings, is under way, scheduled to be started-up in 2014.

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Cores, Alejandro, Luis Felipe Verdeja, Serafín Ferreira, Íñigo Ruiz-Bustinza, Javier Mochón, Jose Ignacio Robla und Carmen González Gasca. „Iron ore sintering. Part 3: Automatic and control systems“. DYNA 82, Nr. 190 (11.05.2015): 227–36. http://dx.doi.org/10.15446/dyna.v82n190.44054.

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The sintering process involves a large number of parameters, more than 500, each of which exerts a greater or lesser influence and needs to be controlled, within the possible limits, in order to optimise productivity, process stability, and standardise the composition and quality of the sinter produced. To comply with environmental legislation, a pollution control system must monitor the particle matter and gases generated and emitted into the atmosphere by the sinter plant. Automation and control systems are vital tools to assist plant operators in the monitoring of each stage of the sinter production process.

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19

MORKUN, Vladimir, Vitalii TRON, Oleksandra SERDIUK und Alona HAPONENKO. „ASSESSMENT OF IRON ORE CONCENTRATION CHARACTERISTICS ON THE BASIS OF ULTRASONIC MEASUREMENTS“. Sustainable Development of Mountain Territories 13, Nr. 2 (30.06.2021): 273–80. http://dx.doi.org/10.21177/1998-4502-2021-13-2-273-280.

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A great number of various factors to a different extent impact iron ore treatment, properties of mineral composition of ore and parameters of technological equipment being some of them. To solve the problem of improving performance of a concentration plant in terms of the concentrate, it is required to elaborate effective scheduled procedures, upgrade technological equipment, develop methods of control over concentration processes considering technological properties of ore fed. There is suggested a method of improving efficiency of magnetic concentration of iron ore under the action of high-intensity ultrasound. There are established dependencies between physical-mechanical and chemical-mineralogical characteristics of iron ore slurry solids and their behavior in technological flows under controlled ultrasonic vibrations, this enabling simulation modelling of the process and specification of optimal controlling actions. The research object is assessment of characteristics and control of iron ore magnetic concentration on the technological line of the ore concentration plant. The research subject is the cyber-physical system based on using impacts of highintensity ultrasound on slurry solids to assess characteristics of iron ore magnetic concentration. Obtained dependencies and mathematical models of the non-linear spatial process of high-intensity ultrasound propagation in the iron ore slurry enable implementing the method of assessing characteristics of iron ore magnetic concentration and due to this increase efficiency of the mentioned operations. There are suggested methods of calculating intensity of high-intensity ultrasound in a certain point of the measurement area in order to perform forecast displacement of ground ore particles and changes of the fraction composition of slurry solids under the controlled action of high-intensity ultrasonic vibrations. The developed method and the software-engineering complex for its implementation enable restoring a function of distributing ground ore particles by sizes, forecasting results of technological operations and forming controlling actions.

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20

Umadevi, T., M. G. Sampath Kumar, P. C. Mahapatra, T. Mohan Babu und Madhu Ranjan. „Recycling of steel plant mill scale via iron ore pelletisation process“. Ironmaking & Steelmaking 36, Nr. 6 (August 2009): 409–15. http://dx.doi.org/10.1179/174328108x393795.

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21

Liu, Wenbo, Defeng Sun und Te Xu. „Integrated Production and Distribution Planning for the Iron Ore Concentrate“. Mathematical Problems in Engineering 2019 (28.02.2019): 1–10. http://dx.doi.org/10.1155/2019/7948349.

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This paper studies the production and distribution planning problem faced by the iron ore mining companies, which aims to minimize the total costs for the whole production and distribution system of the iron ore concentrate. The ores are first mined from multiple ore locations, and then sent to the corresponding dressing plant to produce ore concentrate, which will be sent to distribution centers and finally fulfill the customers' demands. This paper also tackles the difficulty of variable cut-off grade when making mining production planning decisions. A mixed-integer programming model is developed and then solved by a Lagrange relaxation (LR) procedure. Computational results indicate that the proposed solution method is more efficient than the standard solution software CPLEX.

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22

Zhang, Ying Yi, Yuan Hong Qi, Zong Shu Zou und Yun Gang Li. „Development Prospect of Rotary Hearth Furnace Process in China“. Advanced Materials Research 746 (August 2013): 533–38. http://dx.doi.org/10.4028/www.scientific.net/amr.746.533.

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Summarized the development situation of rotary hearth furnace (RHF) direct reduction technology, ore resource allocation situation and direct reduction iron demand. The survey results show that: China's iron ore resource allocation heavily rely on imported iron ore, gas-based direct reduction process (MIDREX, HYL-III, FINMET) is not likely to be the mainly direct reduced iron (DRI) process in China. However, non coking coal resources is very rich in China, research and development of coal-based direct reduction process (such as FASTMET and ITMK3 process) has important practical significance, it can strengthen the comprehensive utilization on low grade iron ore, associated mineral resources and iron & steel plant dust and sludge. It has great significance to alleviate steel scrap demand and stable development of the iron and steel industry and protect the national economic security in China.

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23

Bazaluk, Oleg, Mykhailo Petlovanyi, Vasyl Lozynskyi, Serhii Zubko, Kateryna Sai und Pavlo Saik. „Sustainable Underground Iron Ore Mining in Ukraine with Backfilling Worked-Out Area“. Sustainability 13, Nr. 2 (15.01.2021): 834. http://dx.doi.org/10.3390/su13020834.

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The present paper considers aspects of underground iron ore mining in Ukraine, in particular the level of mine production and reserves of basic ore fields. It analyzes and generalizes the practice of using cemented rockfill under difficult mining and hydrogeological conditions of the Pivdenno-Bilozerske high-grade iron ore field. The Belozersky iron ore district is the only one in Ukraine that, without any technological cycle of beneficiation, can provide both domestic and foreign consumers with high-quality raw iron ore as required by world markets. The PJSC Zaporizhzhia iron ore plant extracts iron ore from the Pivdenno-Bilozerske field with an iron content of more than 60% using the low-waste, environmentally friendly technology of backfilling the mined-out area with a hardening mixture. The peculiarities of the technology for steep deposit mining and the main processes of backfilling operations in terms of preparation, transportation, and construction of the backfill mass with its stability assessment are explained in detail in this paper. As a result of using cemented rockfill, rock mass stability is provided, a considerable part of industrial waste is disposed of in the mined-out area, and the earth’s surface subsidence within the area is prevented (in comparison with mining enterprises in other fields).

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24

Boscolo, M., und E. Padoano. „Solutions for containing dioxin emissions from iron ore sintering at Italian plant“. Ironmaking & Steelmaking 38, Nr. 2 (Februar 2011): 119–22. http://dx.doi.org/10.1179/030192310x12816231892260.

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25

Varichev, A. V., A. A. Ugarov, N. T. Efendiev, S. I. Kretov, A. A. Lavrinenko, A. A. Solodukhin und P. V. Puzakov. „Innovative Solutions in Iron Ore Production at Mikhailovsky Mining and Processing Plant“. Journal of Mining Science 53, Nr. 5 (September 2017): 925–37. http://dx.doi.org/10.1134/s1062739117052969.

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26

KASAMA, Shunji, Hisatsugu KITAGUCHI, Yuichi YAMAMURA, Kazuomi WATANABE und Akifumi UMEZU. „Analysis of Visibility of Exhaust Gas in the Iron Ore Sintering Plant“. Tetsu-to-Hagane 91, Nr. 10 (2005): 757–62. http://dx.doi.org/10.2355/tetsutohagane1955.91.10_757.

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27

Khokhulya, Mikhail, Alexander Fomin und Svetlana Alekseeva. „Recovery of magnetite-hematite concentrate from iron ore tailings“. E3S Web of Conferences 247 (2021): 01042. http://dx.doi.org/10.1051/e3sconf/202124701042.

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The research is aimed at study of the probable recovery of iron from the tailings of the Olcon mining company located in the north-western Arctic zone of Russia. Material composition of a sample from a tailings dump was analysed. The authors have developed a separation production technology to recover magnetite-hematite concentrate from the tailings. A processing flowsheet includes magnetic separation, milling and gravity concentration methods. The separation technology provides for production of iron ore concentrate with total iron content of 65.9% and recovers 91.0% of magnetite and 80.5% of hematite from the tailings containing 20.4% of total iron. The proposed technology will increase production of the concentrate at a dressing plant and reduce environmental impact.

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Kawigraha, Adji, Johny Wahyuadi Soedarsono, Sri Harjanto und Pramusanto. „Reduction of Composite Pellet Containing Indonesia Lateritic Iron Ore as Raw Material for Producing TWDI“. Applied Mechanics and Materials 281 (Januar 2013): 490–95. http://dx.doi.org/10.4028/www.scientific.net/amm.281.490.

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Blast furnace process is still an important process for producing pig iron. The process needs high grade iron ore and coke. The two materials can not be found easily. In addition blast furnace process needs cooking and sintering plant that produces polluted gases. Utilization of composite pellet for pig iron production can simplify process. The pellet is made of iron ore and coal. In addition the pellet can be made from other iron source and coal. This paper discusses the evolution of phase during reduction of composite pellet containing lateritic iron ore. Fresh iron ore and coal were ground to 140 mesh separately. They were mixed and pelletized. The quantity of coal added was varied from 0 %, 20 % and 29 % of pellet weight. Pellets were heated with 10 °C/minute to 1100 °C, 1200 °C, 1300 °C and 1350 °C in a tube furnace and temperature was held during 10 minutes. Heated pellets were analyzed with XRD equipment. XRD of reduced pellets showed that iron phase change with coal and temperature. Lack of coal during heating results the re-oxidation of iron phases. This process is due to replacement of reductive atmosphere by oxidative atmosphere.

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Wang, Wei, Zhi Hui Xu, Long Long Yang, Zheng Liang Xue, Dong Nan Zhao und Sheng Qiang Song. „Prediction Model of Micum Strength for Iron Ore Sinter“. Advanced Materials Research 402 (November 2011): 476–79. http://dx.doi.org/10.4028/www.scientific.net/amr.402.476.

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Micum strength is an important indicator of quality of sinter; BP artificial neural network model is built to predict the strength of sinter drum. The neural network use the main factors that influence the sinter drum as input data, and output is Micum strength. Experiment results shows that the maximum absolute error between the Micum strength predicted by neural network and real value from the sinter plant is 0.3346, and the average absolute error is 0.1154. These prove that the prediction is accuracy. In addition, because of the "black box" characteristic of the neural network model, the neural network model can not give the law of how the various factors affect the micum strength of sinter ore, this paper also uses the model to analysis the law of how TFe, SiO2 content affect the micum strength. The results not only consist with the sintering theory, but also verify the validity of the model.

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Noyd, Robert K., F. L. Pfleger, M. R. Norland und Deborah L. Hall. „Native Plant Productivity and Litter Decomposition in Reclamation of Taconite Iron Ore Tailing“. Journal of Environmental Quality 26, Nr. 3 (Mai 1997): 682–87. http://dx.doi.org/10.2134/jeq1997.00472425002600030013x.

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31

Shorokhova, A. V., und A. V. Novichikhin. „INTEGRATION AND MATHEMATICAL MODELING OF PROCESSING TECHNOLOGIES OF CONCENTRATING PLANT IRON ORE WASTE“. Izvestiya Visshikh Uchebnykh Zavedenii. Chernaya Metallurgiya = Izvestiya. Ferrous Metallurgy 60, Nr. 6 (01.01.2017): 486–92. http://dx.doi.org/10.17073/0368-0797-2017-6-486-492.

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32

Lau, Lucas Ladeira, Luiz Fernando Andrade de Castro, Flavio de Castro Dutra und Marcos Vinícius Cantarino. „Characterization and mass balance of trace elements in an iron ore sinter plant“. Journal of Materials Research and Technology 5, Nr. 2 (April 2016): 144–51. http://dx.doi.org/10.1016/j.jmrt.2015.10.007.

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33

Kukhar, V. Yu. „Laboratory research of fine filtering of mine water of Zaporizhskyi iron-ore plant“. Geo-Technical mechanics, Nr. 150 (2020): 136–45. http://dx.doi.org/10.15407/geotm2020.150.136.

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34

Torabi, Amirreza, Seyed Hamed Moosavirad, Shahram Ariafar und Alireza Eftekhari. „Dust emission reduction in iron ore concentrate production plant using value engineering method“. Environmental Science and Pollution Research 28, Nr. 28 (15.03.2021): 37647–60. http://dx.doi.org/10.1007/s11356-021-13331-9.

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35

Yin, Wan Zhong, Yue Xin Han und Feng Xie. „Floatation Separation Research on Siderite-Containing Iron Concentrate“. Advanced Materials Research 92 (Januar 2010): 103–9. http://dx.doi.org/10.4028/www.scientific.net/amr.92.103.

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With the development of mining operation, the content of iron carbonate typically siderite increases evidently in the iron ore produced in Dong Anshan floatation plant, China. The presence of siderite significantly decreases the iron grade in the concentrate produced by the current reverse anionic flotation process. The study shows that the floatability of hematite, siderite and quartz differs with an increase of pH by using the combination of starch and CaCl2 as depressant. A two-step flotation process has been developed to treat Dong Anshan iron ore by which siderite was removed in the first step floatation and in the second step, reverse anionic flotation was used to produce high quality iron concentrate.

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Wang, Wei Zhi, Meng Qing Lei und Chun Guang Yang. „Research Progress of Flotation Collector in Hematite Flotation“. Advanced Materials Research 791-793 (September 2013): 232–35. http://dx.doi.org/10.4028/www.scientific.net/amr.791-793.232.

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The article based on several iron ore flotation processes at home and abroad described the collectors at home and abroad development as the flotation process of constantly improving. For different stages of development the article also introducted representative collectors which some iron ore beneficiation plant use briefly, and then explained the details of domestic current high quality collectors. Finally the article prospected the development trend of domestic collectors.

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Zen’kov, I. V., Yu A. Anischenko, V. A. Fedorov, G. A. Karacheva, P. M. Kondrashov, V. N. Konov, P. L. Pavlova, Yu A. Maglinets und S. N. Skornyakova. „Information Support for the Assessment of the Ecology of Disturbed Lands by Iron Ore Open Pits in the Middle and South Urals“. Ecology and Industry of Russia 25, Nr. 1 (13.01.2021): 38–43. http://dx.doi.org/10.18412/1816-0395-2021-1-38-43.

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The results of assessing the formation of a plant and aquatic ecosystem on the territory of worked-out and being developed iron ore deposits in the regions of the Urals are presented. It has been established that the restoration of the ecobalance is taking place at an acceptable rate at iron ore deposits located in the forest zone. Environmental restoration assessment was carried out using the results of remote monitoring.

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ARUN DESHMUKH, ANAND, SHIVKUMAR SHRINARAYAN PRAJAPATI und RAHUL ANUP MISHRA. „Occupational Exposure of Noise Level in Opencast Iron Ore Mines in India“. Current World Environment 13, Nr. 3 (22.12.2018): 353–59. http://dx.doi.org/10.12944/cwe.13.3.08.

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Mining in general has become essential industry sector for the sustaining growth of any developing country. In India iron ore mining is mainly mechanised and well developed industry sector, using highly mechanised equipments and technology for excavation and processing of mined iron ore. It is due to this reason iron ore mining seen as a one of the major sector responsible for workplace occupational health hazard particularly for noise related health impacts on workers health. The objective of this study was to ascertain the job specific noise exposure among the Similar Exposure Groups (SEGs). Total 133 personal noise dosimeter samples were collected from different job category and working areas of iron ore mining and processing sector. It was observed that the participated workers in the crushing area were exposed to 81.64 dB (A), Heavy Earth Moving Machineries (HEMM) operators 86.10 dB (A), loading plant workers 83.76 dB (A), screening plant workers 87.62 dB (A) and mines operation and workshop workers 84.92 dB (A). During the study specifically HEMM operators were highly exposed to workplace noise, with 46% samples exceeding warning limit and 18% exceeding danger limit prescribed by Directorate General of Mines Safety (DGMS), Government of India. It was felt necessary to augment the awareness and safety training to the workers for proper implementation of preventive measure for workplace noise exposure.

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Popov, A. T., O. A. Suslova und E. A. Voronkova. „Optimization of the Process of Unloading of Iron Ore Raw Materials: The Case of a Steel Plant“. World of Transport and Transportation 18, Nr. 3 (26.12.2020): 148–62. http://dx.doi.org/10.30932/1992-3252-2020-18-148-162.

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The process of unloading iron ore raw materials of the metallurgical plant to the sinter plant has not been considered for a long time as a particular topic. Over the last years the conditions of metallurgical production have undergone certain changes: its intensification has occurred, which entails the need to re-evaluate parameters of stable operation of sinter production. The objective of the suggested study is to consider the issues of possible technical and technological improvement harmonizing transport flows with the requirements of the main production process. To achieve this goal, a technique of mathematical modelling is used, based on the mathematical apparatus of linear programming; graphic-analytical method; method of probability theory.The issues of the process of unloading, storage of iron ore raw materials, of their preparation for sinter production are primarily considered.The article presents the main positions of the process of optimizing unloading of sinter batch of a metallurgical plant.The general characteristics of the technology of metallurgical production and of each particular process are described. The agglomeration process is considered in more detail. The tables of initial iron ore raw materials for sintering production for certain reporting periods are given, for the sake of clarity, the data of one of the tables are summarized in a diagram. A diagram of a standard trestle-type ore warehouse is considered, which sequentially shows the main processes of sintering production from supply of raw materials to the car dumper to getting through a belt conveyor into a stack, and then into receiving bins. The article also provides an example of formation of piles of iron ore raw materials using manganese limestone.The study is based on a dynamic transport problem with delays (DTPD), which considers time of transportation of goods, the dynamics of production volumes over time, the dynamics of consumption, the dynamics of stocks of suppliers and consumers, dynamics of cost of transportation and storage, dynamics of cost of consumption losses. The study contains several mono-problems with a mono load, which overlap each other, forming a multiplicative overlay of single-product problems.

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de Araújo, Samantha Rodrigues, Lásara Fabrícia Rodrigues, Júlia Castro Mendes und Ricardo André Fiorotti Peixoto. „Reverse logistics system applied to the reuse of iron ore tailings“. Waste Management & Research: The Journal for a Sustainable Circular Economy 38, Nr. 12 (29.07.2020): 1429–37. http://dx.doi.org/10.1177/0734242x20944478.

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Iron ore tailings (IOT) from tailings dams cause significant environmental, economic, and social impacts, which has motivated the search for reuse alternatives. In this scenario, the present work uses reverse logistics to size the resources required to reuse the IOT for road infrastructure. A reverse logistics system was modelled to transport the IOT from the tailings dam to a processing plant and then to the construction site of a road. Resource capacity constraints and operational limitations were considered, and the economic feasibility of the system was analysed. Two scenarios for tailings transportation on the dam/plant route were simulated aiming at a cost less than R$ 25 (US$ 6.13) per tonne: (1) trucks; and (2) conveyor belts. The economic feasibility of both scenarios was proven, with scenario 1 presenting the most promising results – a transport distance of 290 km within the established price limit. This methodology can thus be applied to encourage the large-scale reuse of IOT.

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Erokhin, Yu V., A. V. Zakharov und L. V. Leonova. „Mineralogy of bloomery slags of the Shuvakish ironworks plant (outskirts of Yekaterinburg, Sverdlovsk oblast)“. МИНЕРАЛОГИЯ (MINERALOGY) 7 (April 2021): 66–77. http://dx.doi.org/10.35597/2313-545x-2021-7-1-5.

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The mineralogy of slags of the Shuvakish ironworks plant is studied. The plant had been operated during the reign of Peter the Great from 1704 to 1716 years and was located within the present-day northwestern outskirts of Yekaterinburg. The slags are composed of fayalite aggregate with a signifcant content of hercynite and wustite and contain spherules of iron, glass, leucite and ferromerrillite. The chemical composition of rock-forming and ore minerals is determined on a JSM-6390LV (Jeol) SEM equipped with an INCA Energy 450 X-Max 80 EDS (Oxford Instruments) (Institute of Geology and Geochemistry UB RAS, Yekaterinburg). The slags formed as a result of bloomery iron production. Their formation temperature is estimated in a range of 1177 °С on the basis of eutectic crystallization of wustite and fayalite. The Shuvakish plant was supplied with marsh iron ore, which was most likely extracted in the nearest Moleben swamp located to the north from the plant.

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Prokopenko, Vasiliy, und Olexandra Tymoshenko. „The Mechanism of Ensuring Ecological and Economic Efficiency of the Iron-Ore Deposit Exploitation“. Advanced Engineering Forum 22 (Mai 2017): 128–34. http://dx.doi.org/10.4028/www.scientific.net/aef.22.128.

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Components of constantly renewed cycle of formation the investment on maintaining of productivity fixed assets of production and a mechanism of ensuring the environmental and economic efficiency during exploitation of iron ore deposit is substantiated. The methodic fundamentals in investing of expanded reproduction of fixed assets on the mining enterprise for increasing the completeness of using the operational stocks of ore raw materials have been developed. The possibility and advisability of investing in reproduction of fixed assets due to additional revenue from the sale of products made from rich ore are proved, which creates a profitable conditions for processing low-grade ore stocks. It is achieved through the expanded reproduction of fixed assets, that is able to maintain the pit capacity depending on the degree and time of its deepening. On the example of Poltava MPP it is estimated the possibility of industrial complexes to accumulate profits from operations for the extended reproduction of fixed assets. It is proved that the plant will be able to allocate the necessary investment funds if mineral ore reserves is processed with a reduction of its quality.

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Noyd, Robert K., F. L. Pfleger, Michael R. Norland und Michael J. Sadowsky. „Native prairie grasses and microbial community responses to reclamation of taconite iron ore tailing“. Canadian Journal of Botany 73, Nr. 10 (01.10.1995): 1645–54. http://dx.doi.org/10.1139/b95-178.

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The effect of reclamation treatments on seeded native grass cover and species composition, soil microbial biomass carbon, and populations of actinomycetes, fungi, free-living N2-fixing bacteria, and aerobic heterotrophic bacteria was compared in field plots in coarse taconite tailing. Reclamation treatments consisted of all possible combinations of three rates of composed yard waste, three rates of fertilizer, and inoculation with arbuscular mycorrhizal fungi. Composted yard waste increased plant cover, soil microbial biomass, and populations of all groups of microorganisms compared with unamended, non-inoculated control plots. Microbial populations and biomass in tailing plots were low compared with natural soils and were correlated with plant cover and available P. Mycorrhizal inoculation resulted in a 6% increase in plant cover, although this was not significant, and significantly enhanced N2-fixer populations in June but did not affect other groups of microorganisms. There were no differences between moderate and high rates of composted yard waste. We conclude that incorporation of a moderate rate of organic matter can ameliorate the stressful conditions of coarse taconite tailing and can enhance the initiation of a functional soil ecosystem able to support the establishment of seeded native prairie grasses and may provide a long-term solution to reclamation of taconite tailing. Key words: arbuscular mycorrhizal fungi, mine reclamation, soil microorganisms, composted yard waste.

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Jasper, DA, AD Robson und LK Abbott. „Revegetation in an iron ore mine - Nutrient requirements for plant growth and the potential role of vesicular arbuscular (VA) mycorrhizal fungi“. Soil Research 26, Nr. 3 (1988): 497. http://dx.doi.org/10.1071/sr9880497.

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Revegetation after iron-ore mining in the Pilbara region of Australia is difficult because of the harsh climate and because the material to be revegetated is likely to have poor fertility and low microbial activity. In this work we defined the infectivity of VA mycorrhizal fungi in local soils and mine materials, and then the nutrient requirements for adequate plant growth in low-grade ore. Finally, we tested the hypothesis that addition of phosphorus to low-grade ore, and inoculation with VA mycorrhizal fungi, increases the growth of Acacia pyrijolia. The VA mycorrhizas were formed only in soil collected from sites dominated by Triodia pungens. A. pyrifolia nodulated only in soil from sites dominated by A. aneura. In low-grade ore, phosphorus deficiency was the major limitation to plant growth. Inoculation with a Glomus sp. resulted in up to 70% increases in dry matter production at low rates of phosphorus. The response to phosphorus or inoculation with VA mycorrhizal fungi was limited by nitrogen deficiency.

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Guerriero, Ettore, Massimo Bianchini, Pier Francesco Gigliucci, Alessandra Guarnieri, Silvia Mosca, Gianluca Rossetti, Massimiliano Varde und Mauro Rotatori. „Influence of Process Changes on PCDD/Fs Produced in an Iron Ore Sintering Plant“. Environmental Engineering Science 26, Nr. 1 (Januar 2009): 71–80. http://dx.doi.org/10.1089/ees.2007.0053.

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Sekhar, Chandra, Abhijeet Premkumar Moon, Srinivas Dwarapudi, Dhiraj Madhukar Kadhe, Neha Gupta, Saurabh Kundu, Amit Mondal, Indrajit Paul und Uttam Singh. „Failure Analysis and Improvement Measures of Grate Bars Used in Iron Ore Pelletizing Plant“. Journal of Materials Engineering and Performance 30, Nr. 8 (11.05.2021): 6269–83. http://dx.doi.org/10.1007/s11665-021-05835-9.

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Parajuli, Ishor, und Mukesh Kumar Chettri. „Bioaccumulation of Iron in Plants and Their Possibilities as a Tool for Exploration of Hematite Ores“. Amrit Research Journal 1, Nr. 1 (17.09.2020): 1–12. http://dx.doi.org/10.3126/arj.v1i1.32447.

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Relation of plant diversity with iron ore deposit area in Dhaubadi, Hupsekot rural municipality-5, Nawalparasi district, has been investigated in this study to explore good indicator and accumulator among plants. To identify this, plant diversity, iron accumulation in soil and plants growing on them at different plots were measured. Spermacoceae alata, Anaphalis busua, Isodon coesta and Salvia sclarea were common herbs in all plots and out of them Spermacoceae alata had the highest importance value index (IVI) value among herbs. Among the shrubs Ageratina adenophora, Maesa chisia, Osbekia stellate and Elsholtzia blanda were common in all the plots and of them Ageratina adenophora showed the highest IVI. Plant like Elsholtzia blanda and Anaphilis busua were identified as good indicator of iron deposits because of high amount of iron in their body, especially roots. Among all the sites, Begonia picta at the core area (Site A) had the highest iron accumulation, and most plants found there like Cyanotis vaga, Hypericum japonicum, Begonia picta, Gonostegia hirta, Trumphetta rhomboidea, Osbekia stellata and Isodon coesta had bronze coloration in leaves. The bronze coloration in leaves among plants has been identified as a good indicator to ascertain iron ore deposits.

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Deng, Daiqiang, Guodong Cao und Youxuan Zhang. „Experimental Study on the Fine Iron Ore Tailing Containing Gypsum as Backfill Material“. Advances in Materials Science and Engineering 2021 (08.04.2021): 1–9. http://dx.doi.org/10.1155/2021/5576768.

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The strength of the filling body is largely affected by the properties of the binder, mineral composition, fineness, and slurry concentration of tailing. In this paper, the rheological test was conducted to determine the slurry concentration of iron ore tailing containing gypsum. Then, the samples made from slurry and three binders, Portland cement, filling plant binder, and Huazhong binder, were tested, respectively. The effects of curing time, binder-tailing ratio by mass (b/t), and slurry concentration on compression strength were investigated. The sample made from Huazhong binder and iron ore tailing presented the largest compression strength.

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Vorobiov, Ruslan. „MODEL OF BALANCED INNOVATIVE MANAGEMENT BY IRON ORE ENTERPRISES PRODUCTION“. Economic Analysis, Nr. 29(1) (2019): 108–13. http://dx.doi.org/10.35774/econa2019.01.108.

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The article is based on the idea of developing a mathematical economic model of balanced innovative management of the production of iron ore enterprises. It has been determined that in the era of global and local economic crises, the non-specialized entities of entrepreneurial activity, which in their natural state are iron ore enterprises, have become especially vulnerable. Monopoly, on the one hand, is a positive phenomenon that allows increasing the concentration of efforts and resources in order to achieve the greatest efficiency and profitability. On the other hand, it is a factor of significant losses under certain circumstances. That is, in the case of an unfavourable state of the domestic and / or foreign markets, significant reductions (in some cases to practically zero) of sales volumes, with subsequent decrease of production output and other negative events that may occur thereafter can be substantially reduced. Consequently, such entities (and in the first place iron ore enterprises), first of all, need modern tools of balanced innovation management of their own production. It is proved that the most optimal basis for the formation of such an instrument is V. Leontiev's management-model "cost-issue", which is the classical method of systematically quantitatively reflection of any economic relations between different branches of the economic system and, accordingly, can be successfully used for micro level. Based on the basis of the results of the research, the concept of an adapted economic model of balanced innovation management for the production of an iron ore plant has been constructed. On the basis of this, a special innovation model for managing the production processes of the iron ore industry has been formed, taking into account the territorial orientation towards the target market and the ratio of basic production resources.

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Gautam, Sneha, Basanta Kumar Prusty und Aditya Kumar Patra. „Dispersion of respirable particles from the workplace in opencast iron ore mines“. Environmental Technology & Innovation 4 (Oktober 2015): 137–49. http://dx.doi.org/10.1016/j.eti.2015.06.002.

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