Academic literature on the topic 'Mineral slurries'
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Journal articles on the topic "Mineral slurries"
Muster, T. H., and C. A. Prestidge. "Rheological investigations of sulphide mineral slurries." Minerals Engineering 8, no. 12 (December 1995): 1541–55. http://dx.doi.org/10.1016/0892-6875(95)00117-4.
Full textGopalakrishnan, S., A. S. Mujumdar, M. E. Weber, and P. M. Pirkonen. "Electrokinetically enhanced vacuum dewatering of mineral slurries." Filtration & Separation 33, no. 10 (November 1996): 929–32. http://dx.doi.org/10.1016/s0015-1882(97)84252-8.
Full textKongas, Matti, Kari Saloheimo, Heikki Pekkarinen, and Janne Turunen. "New Particle Size Analysis System for Mineral Slurries." IFAC Proceedings Volumes 36, no. 24 (October 2003): 309–14. http://dx.doi.org/10.1016/s1474-6670(17)37648-6.
Full textPurnell, P., O. J. Francis, and C. L. Page. "Formation of thaumasite in synthetic cement mineral slurries." Cement and Concrete Composites 25, no. 8 (December 2003): 857–60. http://dx.doi.org/10.1016/s0958-9465(03)00112-4.
Full textHeiskanen, Kari. "New Wet Classification Hydrocyclones for Fine Mineral Slurries." KONA Powder and Particle Journal 9 (1991): 139–48. http://dx.doi.org/10.14356/kona.1991020.
Full textSchweigler, N., and W. Stahl. "High performance disc filter for dewatering mineral slurries." Filtration & Separation 27, no. 1 (January 1990): 38–41. http://dx.doi.org/10.1016/0015-1882(90)80296-w.
Full textHaavisto, Olli, and Heikki Hyötyniemi. "Reflectance Spectroscopy in the Analysis of Mineral Flotation Slurries." IFAC Proceedings Volumes 42, no. 23 (2009): 140–45. http://dx.doi.org/10.3182/20091014-3-cl-4011.00026.
Full textHaavisto, Olli, and Heikki Hyötyniemi. "Reflectance spectroscopy in the analysis of mineral flotation slurries." Journal of Process Control 21, no. 2 (February 2011): 246–53. http://dx.doi.org/10.1016/j.jprocont.2010.10.015.
Full textCoghill, P. J., M. J. Millen, and B. D. Sowerby. "On-line measurement of particle size in mineral slurries." Minerals Engineering 15, no. 1-2 (January 2002): 83–90. http://dx.doi.org/10.1016/s0892-6875(01)00206-0.
Full textJoseph Soly, Sophia, Ataollah Nosrati, William Skinner, and Jonas Addai-Mensah. "Superabsorbent-mediated dewaterability of fine hydrophobic sulphide mineral slurries." Separation Science and Technology 54, no. 18 (January 21, 2019): 3055–69. http://dx.doi.org/10.1080/01496395.2019.1565771.
Full textDissertations / Theses on the topic "Mineral slurries"
Shah, Ashish, and ashishshah7@yahoo co in. "Rheology of Shear Thickening Mineral Slurries." RMIT University. Civil, Environmental and Chemical Engineering, 2008. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20080725.133946.
Full textFoulkes, Michael Edward. "Plasma spectrochemical analysis of slurries." Thesis, University of Plymouth, 1989. http://hdl.handle.net/10026.1/1928.
Full textNeill, R. I. G. "The rheology and flow behaviour of high concentration mineral slurries." Master's thesis, University of Cape Town, 1988. http://hdl.handle.net/11427/8314.
Full textThe rheology and flow behaviour of high concentration backfill tailings are investigated using a modified Balance Beam Tube Viscometer. The viscometer is capable of producing reliable data using a computer based data acquisition system and three different tube diameters. The aim of this research is to determine the rheology of backfill tailings in order to predict friction head losses. The backfill tailings were prepared into four different particle size distributions each with a different maximum particle size. Each particle size distribution was tested over a range of high concentrations in the viscometer. The rheology of the lower concentration backfill tailings was successfully characterized using the yield-pseudoplastic model. It has been found that at high concentrations rheological characterization is impossible because the laminar flow region of the pseudo-shear diagram varies with tube diameter. This anomalous behaviour in the form of diameter dependence has been recorded in the literature. The results of high concentration tests on backfill tailings are investigated using the following theories to establish and account for the cause of the anomalous behaviour: Effective slip analysis - corrects the measured data for effective slip. Dense-Phase Model - based on the sliding friction between solid particles and the tube wall. Wall Effect - based on a reduction of in situ concentration due to a wall effect. Boundary-Layer Effect - corrects for the effect of a boundary-layer of liquid at the wall. Modified Friction Factors - takes into account the hydrodynamic lubrication between the solid particles and the tube wall. The existence of a thin layer of liquid at the wall is credible but not yet proven. The anomalous behaviour is linked to this layer. However a suitable method for correcting the measured data has not yet been established.
Andrew, Chryss, and andrew chryss@rmit edu au. "Pipeline Transport of Coarse Mineral Suspensions Displaying Shear Thickening." RMIT University. Civil, Environmental and Chemical Engineering, 2008. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20081127.112225.
Full textYeasting, Kyle Douglas. "The Evaluation of Hybrid Slurry Resulting from the Introduction of Additives to Mineral Slurries." Scholar Commons, 2011. http://scholarcommons.usf.edu/etd/3415.
Full textNdlovu, Bulelwa. "The effect of phyllosilicate mineralogy and surface charge on the rheology of mineral slurries." Doctoral thesis, University of Cape Town, 2013. http://hdl.handle.net/11427/5428.
Full textIncludes bibliographical references.
Phyllosilicate minerals exist as common gangue components in many low grade ores. Often broadly classified as ‘clays’, this group of minerals is closely associated with several processing issues. Despite many good studies on the physico-chemical properties of phyllosilicates, there still remains a poor understanding of their suspension flow behaviour. The primary objective of this thesis was to characterise the colloidal behaviour of three commonly occurring phyllosilicates, namely muscovite, vermiculite and chrysotile in terms of their surface charge, mineralogical and resultant rheological properties. The thesis was initiated in order to gain a better understanding of the flow behaviour of these minerals within well-defined model mineral systems, with a longer term view to understanding their impact in complex mineral systems found in mineral processing circuits.
LOAYZA, PAMELA ELIZABETH VELARDE. "EFFICIENCY OF NATURAL POLYMERS (CHITOSAN AND HUMIC ACID) IN FLOCCULATION AND DEWATERING OF MINERAL SLURRIES." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2015. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=31419@1.
Full textCOORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR
CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO
PROGRAMA DE SUPORTE À PÓS-GRADUAÇÃO DE INSTS. DE ENSINO
Rejeitos da mineração contendo grandes quantidades de finos são constantemente descartados em barragens. A recuperação da água contida nesses rejeitos depende, dentre outros fatores, da remoção de reagentes residuais e material particulado fino, que, devido às suas características de tamanho e cargas superficiais requerem tempos de sedimentação impraticáveis industrialmente. Partículas em suspensão, com diâmetro médio inferior a 2 micrometro, não podem ser removidas por sedimentação simples pois, devido às suas cargas superficiais, permanecem em repulsão mútua, promovendo uma estabilidade eletrostática da polpa. Entretanto, o estado de dispersão dessas partículas está diretamente relacionado ao potencial eletrostático de superfície, sendo necessárias etapas de desestabilização de cargas e agregação, por meio de coagulação e floculação. Na indústria mineral as poliacrilamidas são os polímeros comerciais mais comumente utilizados; porém, com a demanda por floculantes de menor custo e ambientalmente amigáveis, como os polímeros naturais de uso ainda incipiente, a quitosana e o ácido húmico passam a ser atrativos para sua aplicação em polpas minerais. Para este caso de estudo serão avaliados um rejeito de níquel e lama vermelha, ambos provenientes de unidades industriais. O pH é uma variável muito influenciável no processo, porém mediante a análise do potencial zeta foram medidas as cargas superficiais resultantes e se determinou o pH de trabalho para cada uma das polpas. A qualidade dos flocos formados tem forte dependência com as condições operacionais de formação como tipo de reagentes e suas combinações, porém mediante a utilização do planejamento experimental foram estudadas variáveis como concentração de sólidos, dosagens de quitosana e de ácido húmico, velocidade e tempo de agitação. Os parâmetros do processo foram otimizados por meio da obtenção e ajuste de modelos matemáticos. Os ensaios de floculação tiveram como variável de resposta a turbidez do sobrenadante e os resultados foram ajustados atendendo às normas ambientais vigentes para reuso da água. Para o rejeito de Ni, em um pH próximo de 7, obteve-se um modelo quadrático, que conferido experimentalmente com as condições otimizadas deu uma resposta de turbidez de 32 NTU. Para o caso da lama vermelha obtiveramse dois modelos: em pH igual a 12 obteve-se um modelo linear, que gerou uma resposta de turbidez de 33 NTU e em pHigual a 8 obteve-se um modelo quadrático, conferido experimentalmente uma resposta de turbidez de 31 NTU. Dessa forma, nota-se que, para os polímeros estudados, é possível reduzir a turbidez de fluxos de sobrenadantes com eficiência de até 90 por cento.
Mining waste containing large amounts of fines are constantly disposed of in dams. The recovery of water contained in these wastes depends, among other factors, the removal of residuals reagents and fine particulate material, which due to their size and surface charge characteristics require of sedimentation times impractical industrially. Suspended particles with an average diameter of less than 2 micrometre, can not be removed by simple sedimentation by reason of their surface charges, remain in mutual repulsion, promoting an electrostatic stability of the pulp. However, the dispersion state of the particles is directly related to the electrostatic surface potential, and steps necessary to destabilize charges and aggregation, through coagulation and flocculation. Polyacrylamides are the most commonly used commercial polymers at the mineral industry; however, the demand for flocculants of lower cost and environmentally friendly, such as natural polymers have incipient use as chitosan and humic acid, become attractive for application in mineral slurries, for this case study will be evaluated the tailings of Ni and the red mud. pH is a very influenceable variable in the process but by an analysis of the zeta potential were measured of resulting surface charges and determined of pH for each of the slurries. The quality of the flakes have formed strong dependence on operating conditions of formation as a kind of reagents and their combinations, but by using the experimental design were studied variables such as of solids concentration, chitosan, humic acid, stirring speed and stirring time. With the obtained mathematical models, were the optimizations conducted of the process parameters. In tests of flocculation, it had turbidity as response variable of the supernatant and the results were adjusted taking into account the environmental standards for water reuse. To Ni in a pH next to 7, there was obtained a quadratic model, given the conditions optimized experimentally gave a turbidity response of 32 NTU. For the case of red mud was obtained two models at pH 12 was obtained as a linear model given experimentally gave a turbidity response of 33 NTU and pH 8 was obtained a quadratic model, given experimentally has a turbidity response of 31 NTU, which show that it is possible to reduce overflow the turbidity from 500 NTU to less than 50 NTU.
Allen, Warren. "Time Dependent Effect of Drilling Slurries on Side Shear Resistance of Drilled Shafts." Scholar Commons, 2016. http://scholarcommons.usf.edu/etd/6453.
Full textLinnane, Cathal David. "Investigation of high temperature enhanced hydrogen formation in mineral amended sediment slurries, as a potential novel deep biosphere energy source." Thesis, Cardiff University, 2009. http://orca.cf.ac.uk/54810/.
Full textPaulsen, Eric. "Investigating the effect of coarse particle addition on the measured rheological parameters of fine clay slurries." Thesis, Stellenbosch : Stellenbosch University, 2007. http://hdl.handle.net/10019.1/18629.
Full textENGLISH ABSTRACT: Due to economic and environmental constraints mining operations are placed under increasing pressure to effectively manage and operate tailings disposal operations. Restrictions imposed on water usage and tailings operations footprint have led to higher density and wider particle size distribution slurries conveyed to tailings areas. One means of efficiently disposing the tailings is co-disposal. In this method a concentrated fine vehicle slurry is used to convey a coarser fraction. This produces a higher density of tailings, with a number of advantages both upstream and downstream of the tailings process. Limited research has been conducted on the effect of coarse particles on the non-Newtonian rheological properties of these slurries. This lack of information complicates the design and reliable operation of these systems. This project aims at gaining a clearer understanding as to the mechanisms involved in the addition of coarse particles to a fine clay slurry vehicle; and to provide a means of estimating the measured slurry rheological properties. A number of experiments were designed to test the slurry (both Kaolin only, and Kaolin-coarse particle mixtures) rheological properties using a Couette viscometer (for the dynamic flow properties of yield stress and plastic viscosity) and a vane instrument (for the static yield stress measurements). The slurries were prepared in varying Kaolin clay solids concentrations with reverse osmosis water. Glass beads and two types of industrial sand were used as the coarse fractions. All of the coarse particles had a similar size but varied significantly in shape. Slurry pH and temperature readings were monitored throughout the tests. Tests were done initially on clay only slurries. The rheological properties of these slurries were repeatable, and no noticeable variations of properties with time were observed. The yield stress (both static and dynamic) and plastic viscosity data were well correlated with established relationships. Coarse particles were added to the clay only slurries, and then removed. The remaining clay only slurry exhibited the same rheological properties as the initial clay only slurry. The presence of coarse particles increased all the measured rheological properties (i.e. dynamic yield stress, Bingham viscosity, and static vane yield stress) in a fashion resembling the effect of adding clay to a clay only slurry. In addition, the change in measured rheological property by addition of coarse particle was independent of the clay fraction in the clay slurry. Furthermore, with both the clay only slurries and clay and coarse sand slurries, a constant linear relationship existed between the static and dynamic yield stress. Several correlations from the literature were found to provide reasonable prediction of the rheological property variations observed. These empirical and semi-empirical models however did little to explain the mechanisms involved in coarse particle addition. A new correlation has been proposed, Residual Clay Concentration, which predicts the change in rheological property based on an additional clay concentration, which in turn is a linear function of the coarse particle concentration. The accuracy of this model further strengthens the belief that the coarse particle acts in a similar fashion to a floc. By means of a case study example the importance of selecting an appropriate model for design was illustrated. The Residual Clay Concentration method provided the most conservative results. This combined with its theoretical basis strengthens the models recommendation for use in design.
AFRIKAANSE OPSOMMING: As gevolg van ekonomiese en omgewings beperkinge word mynwese nywerhede onder toenemende druk geplaas om doeltreffende afvalstroom bestuur en operasie toe te pas. Beperkinge geplaas op water gebruik en afvalstroom area-groote ly tot hoër digthede en wyer partikel-grooteverspreidings van flodders vervoer na afval areas. Een manier om van die afval doeltreffend ontslae te raak en te berg is deur medeberging. In die metode word ‘n gekonsentreerde fyn flodder gebruik as draer van ‘n growwer partikel-fraksie. Dit ly tot ‘n hoër digtheid flodder, met verskeie voordele in beide die op – en afstroom prosesse. Beperkte navorsing is gedoen op die effek van growwe partikels op die nie-Newoniese rheolgiese eienskappe van hierdie flodders. Hierdie tekort aan informasie maak die effektiewe, betroubare bedryf en operasie van die sisteme meer ingewikkeld. Hierdie projek is daarheen gemik om ‘n beter begrip te ontwikkel met betrekking tot die meganismes betrokke in die byvoeging van growwe partikels aan ‘n fyn klei-agtige flodder draer; en om ‘n manier te voorsien wat die rheologiese eienskappe kan beraam. Verskeie eksperimente was ontwerp om die flodders (beide slegs Kaolien, en Kaoliengrowwe partikel mengsels) se rheologiese eienskappe te toets deur die gebruik van ‘n Couette-viskometer. Die Couette viskometer was gebruik om die dinamiese eienskappe (van grens-spanning, en plastiese viskositet) te meet. ‘n Vaan apparaat is gebruik om die eienskap van statiese grens-spanning te meet. Die flodders was voorberei in verskeie Kaolien konsentrasies met tru-osmosis water. Glas krale en twee tipes industriële sand is gebruik as die growwe fraksies. Al die growwe partikels het soortgelyke groottes gehad, maar het grootliks verskil in vorm. Die flodder pH en temperatuur lesings is deurentyd nagegaan. Toetse was aanvanklik gedoen op die klei-alleenlike flodders. Die gemete reologiese eienskappe van die flodders was herhaalbaar, en geen opmerkbare veranderinge van die eienskappe met betrekking tot tyd is gemeet nie. Die grens-spanning (beide statiese en dinamiese) en plastiese viskositeit is goed gekorrelleer met gevestigde verhoudinge. Growwe partikels is aan die klei-alleenlike flodders bygevoeg, en daarnae verwyder. Die oorblywende klei-alleenlike flodder het dieselfde gemete rheologiese eienskappe getoon as die oorspronklike klei-allenlike flodder. Die teenwoordigheid van growwe partikels het na ‘n toename van al die gamete rheologiese eienskappe gelei wat fisies baie soortgelyk is aan die byvoeging van klei tot ‘n klei-alleenlike flodder. Verder, met beide die klei-alleenlike en klei-growwe partikel flodders het ‘n konstante liniëre funksie tussen die statiese en dinamiese grens-spannings bestaan. Verskeie verhoudings uit die literatuur het goeie korrelasie bewerkstellig met die waargenome rheologie veranderinge. Hierdie empiriese en semi-empiriese modelle doen egter min om die megansimes betrokke in die toevoeging van growwe partikels te verduidelik. ‘n Nuwe korrelasie is voorgestel, naamlik die Residu Klei Konsentrasie. Hierdie model voorspel die verandering in reologiese eienskappe gebaseer op ‘n addisionele klei konsentrasie, wat ‘n liniëre funkise is van die growwe partikel konsentrasie. Die goeie korrelasie gesien met die model versterk die idée dat die growwe partikel in ‘n soortgelyke manier as ‘n flok gedra in die teenwoordigheid van ander flokke. Deur middel van ‘n tipiese industriële voorbeeld is die belangrikheid in die keuse van die regte korrelasie geillustreer. Die Residu Klei Konsentrasie metode het die mees konservatiewe resultate gelewer. Hierdie feit gekombineerd met die model se soliede teoreitiese beginsels versterk dit as voorgestelde korrelasie vir ontwerp.
Books on the topic "Mineral slurries"
Sommer, Sven Gjedde. Ammonia volatilisation from livestock slurries and mineral fertilisers. Odense: University Press of Southern Denmark, 2013.
Find full textOja, Marja. Pressure filtration of mineral slurries: Modelling and particle shape characterization. Lappeenranta, Finland: Lappeenranta University of Technology, 1996.
Find full textZaman, Abbas A. Rheological evaluation and control of flow behavior of concentrated phosphate mineral slurries: Final report. Bartow, Fla: The Institute, 1999.
Find full textBook chapters on the topic "Mineral slurries"
Biletskyy, V., P. Sergeyev, and O. Krut. "Fundamentals of highly loaded coal-water slurries." In Mining of Mineral Deposits, 105–14. CRC Press, 2013. http://dx.doi.org/10.1201/b16354-19.
Full textGöktepe, F., and K. P. Williams. "Electrochemical potential in single and mixture of mineral slurries." In Mineral Processing on the Verge of the 21st Century, 215–18. Routledge, 2017. http://dx.doi.org/10.1201/9780203747117-37.
Full textStiborsky, M., and H. Anlauf. "Prediction of centrifugal deliquoring for changing particle composition in mineral slurries." In Mineral Processing on the Verge of the 21st Century, 613–17. Routledge, 2017. http://dx.doi.org/10.1201/9780203747117-108.
Full textConference papers on the topic "Mineral slurries"
Göktepe, F., and K. Williams. "Electrochemical potential in single and mixture of mineral slurries." In The 8th International Mineral Processing Symposium. Taylor & Francis Group, 6000 Broken Sound Parkway NW, Suite 300, Boca Raton, FL 33487-2742: CRC Press, 2017. http://dx.doi.org/10.4324/9780203747117-42.
Full textStiborsky, M., and H. Anlauf. "Prediction of centrifugal deliquoring for changing particle composition in mineral slurries." In The 8th International Mineral Processing Symposium. Taylor & Francis Group, 6000 Broken Sound Parkway NW, Suite 300, Boca Raton, FL 33487-2742: CRC Press, 2017. http://dx.doi.org/10.4324/9780203747117-118.
Full textRupakheti, Prabesh, Shobha K. Bhatia, and Nuzhath Fatema. "A Study on Heavy Metal Contaminated Slurries Using Reactive Soil Mineral and Cellulosic Absorbents." In Geotechnical Frontiers 2017. Reston, VA: American Society of Civil Engineers, 2017. http://dx.doi.org/10.1061/9780784480434.050.
Full textBossio, Boris M., Armando J. Blanco, and Franz H. Herna´ndez. "Eulerian-Eulerian Modeling of Non-Newtonian Slurries Flow in Horizontal Pipes." In ASME 2009 Fluids Engineering Division Summer Meeting. ASMEDC, 2009. http://dx.doi.org/10.1115/fedsm2009-78019.
Full textRupakheti, Prabesh, Shobha K. Bhatia, and Erin K. Jackson. "Containment and Dewatering of Heavy Metal Contaminated Slurries Using Reactive Minerals and Cellulose Materials in Geotextile Tubes." In Geo-Chicago 2016. Reston, VA: American Society of Civil Engineers, 2016. http://dx.doi.org/10.1061/9780784480182.012.
Full textReports on the topic "Mineral slurries"
Thornell, Travis, Charles Weiss, Sarah Williams, Jennifer Jefcoat, Zackery McClelland, Todd Rushing, and Robert Moser. Magnetorheological composite materials (MRCMs) for instant and adaptable structural control. Engineer Research and Development Center (U.S.), November 2020. http://dx.doi.org/10.21079/11681/38721.
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