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Tesis sobre el tema "Ore-dressing"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 31 de julio de 2024

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1

Labonté, Germain 1960. "Electrochemical potentials in flotation systems : measurement, interpretation and applications." Thesis, McGill University, 1987. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=63825.

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2

Penberthy, Catharina Johanna. "The effect of mineralogical variation in the UG2 chromitite on recovery of platinum-group elements." Pretoria : [s.n.], 2005. http://upetd.up.ac.za/thesis/available/etd-11282005-113358/.

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3

Stange, Wayne. "Towards more effective simulation of minerals processing systems." Thesis, University of the Witwatersrand, Johannesburg, 1988. http://hdl.handle.net/10539/21140.

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Two aspects of the computer simulation of minerals processing systems were investigated in order to facilitate more effective use of simulation technology. A user-interface was designed and combined with an existing simulator executive, resulting in the implementation of a user-friendly microcomputer based minerals processing simulator, MicroSim. Ease of use was achieved by consideration of the needs of the user of such a program. This resulted in the use of graphical methods for information input and output. Efficient form-filling techniques were developed for numerical data entry and

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4

Alves, Paula Regina. "The carbonatite-hosted apatite deposit of Jacupiranga, SE Brazil: styles of mineralization, ore characterization and association with mineral processing." Diss., Rolla, Mo. : Missouri University of Science and Technology, 2008. http://scholarsmine.mst.edu/thesis/pdf/prayb4_09007dcc804f7bd9.pdf.

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Thesis (M.S.)--Missouri University of Science and Technology, 2008.<br>Vita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed May 9, 2008) Includes bibliographical references (p. 131-139).

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5

Cline, Jean Schroeder. "Physical and chemical aspects of fluid evolution in hydrothermal ore systems." Diss., This resource online, 1990. http://scholar.lib.vt.edu/theses/available/etd-09162005-115029/.

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6

Van, der Merwe Josias Willem. "Dissolution of sphalerite minerals from Rosh Pinah tailings." Pretoria : [s.n.], 2003. http://upetd.up.ac.za/thesis/available/etd-04282005-124139.

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7

Dai, Qiang. "Simulation of packed column jigging." Morgantown, W. Va. : [West Virginia University Libraries], 1999. http://etd.wvu.edu/templates/showETD.cfm?recnum=783.

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Thesis (M.S.)--West Virginia University, 1999.<br>Title from document title page. Document formatted into pages; contains xiii, 131 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references (p. 61-64).

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8

Maree, Westhein Bethren. "Froth flotation of an Nkomati mineral ore using mixtures of thiol collectors." Thesis, Cape Peninsula University of Technology, 2016. http://hdl.handle.net/20.500.11838/2512.

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Thesis (MTech (Chemical Engineering))--Cape Peninsula University of Technology, 2016.<br>Nickel, a valuable base metal, is the predominant product from the Nkomati mine in South Africa. High-grade nickel mineral ores (2%) from the Massive Sulphide Body have been depleted leaving those of low grade (0.3%). The beneficiation of this ore presents a challenge to the minerals processing industry. In response, batch froth flotation tests were used to explore the effects of mixtures of potassium amyl xanthate (PAX) and IPETC (Isopropyl ethyl thionocarbamate) on the grades and recoveries of nickel. In

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9

Vianna, Sérgio Maurício S. M. "The effect of particle size, collector coverage and liberation on the floatability of galena particles in an ore /." [St. Lucia, Qld.], 2004. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe18153.pdf.

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10

Купин, А. И., та А. В. Азарян. "Обобщенный алгоритм принятия решений для 1 стадии рудообогатительной фабрики". Thesis, Издательство СумГУ, 2011. http://essuir.sumdu.edu.ua/handle/123456789/25231.

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11

Kloppers, Lourens Marthinus. "Froth flotation of a Merensky platinum bearing ore with various THIOL collectors and their mixtures." Thesis, Cape Peninsula University of Technology, 2016. http://hdl.handle.net/20.500.11838/2481.

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Thesis (MTech (Chemical Engineering))--Cape Peninsula University of Technology, 2016.<br>The Bushveld igneous complex in northern South Africa has the largest deposit of platinum group elements (PGE) in the world. In trace amounts, these are closely associated with base metal sulphides (BMS). Froth flotation is used to beneficiate these PGE ores. The process constitutes a bulk sulphide recovery. Improvement of recovery of the BMS is required to maximise the recovery of PGEs. The performance of the froth flotation process is largely dependent on the chemical additives used and these chemic

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12

Wanigasekara-Mohotti, Don Kripalath. "Optimisation for the synthesis of mineral processing flowsheets." Thesis, The University of Sydney, 1999. https://hdl.handle.net/2123/27597.

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‘Minerals’ is a heuristic—based computer aided design system that implements an evolutionary design methodology to synthesise mineral beneficiaring flowsheets. It has been under developement at the University of Sydney since the 1970s by various post graduate students under the guidance of Professor R. G. H. Prince. In its previous development phases, the models were improved and new process units added. As a consequence, the optimiser used by ‘Minerals’ was no longer able to function properly and a “make do” optimser was implemented.

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13

Viljoen, Willemien. "Phase relations in the system Cu-Fe-Ni-S and their application to the slow cooling of PGE matte." Pretoria : [s.n.], 2005. http://upetd.up.ac.za/thesis/available/etd-10132005-100921/.

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14

Van, Dyk Jacobus Philippus. "Process development for the production of beneficiated titania slag." Pretoria : [s.n.], 2009. http://upetd.up.ac.za/thesis/available/etd-10122009-144157/.

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15

Luttrell, Gerald H. "Hydrodynamic studies and mathematical modeling of fine coal flotation." Diss., Virginia Polytechnic Institute and State University, 1986. http://hdl.handle.net/10919/49828.

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16

Latti, Anna Dewetia. "The textural effects of multiphase mineral systems in liberation measurement /." [St. Lucia, Qld.], 2006. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe19407.pdf.

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17

Crane, Martin John, University of Western Sydney, of Science Technology and Environment College, and of Science Food and Horticulture School. "Geochemical studies of selected base metal minerals from the supergene zone." THESIS_CSTE_SFH_Crane_M.xml, 2001. http://handle.uws.edu.au:8081/1959.7/232.

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Acid leaching of different natural chrysocolla samples under ambient conditions demonstrated that the chemical and chrystallographic inhomogenity significantly affects the rate and that it is virtually impossible to use the mineral as a model for the kinetics of hydrometallurgical processing of copper ores.Dissolution experiments, stability diagrams,and X-ray powder diffraction studies are undertaken and studied in this research and results are given.It is found that a complete solid solution series exists in Nature with most tungstenian wulfenites and molybdenum stolzites containing a range o

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18

Steinberg, W. S. "Development of a control strategy for the open slag bath furnaces at Highveld Steel and Vanadium Corporation Ltd." Pretoria : [s.n.], 2009. http://upetd.up.ac.za/thesis/available/etd-07062009-115433.

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19

Jesus, Wanderson Grazielli Mendes de. "Análise do processo de adequação da usina de Conceição 1." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2017. http://hdl.handle.net/10183/180143.

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Esta dissertação está baseada no trabalho desenvolvido para adequar a usina de Conceição 1 (da Vale S.A.) para o processamento de itabiritos compactos e semi compactos, situada em Itabira-MG. Até 2014, a usina de Conceição 1 foi alimentada com hematitas e itabiritos friáveis e produzia cerca de 22 Mt/ano. Com o consumo progressivo das reservas de minérios friáveis, tornou-se necessário que a usina processasse minérios mais competentes e com menor teor de Fe: itabiritos compactos e semi compactos (40%Fe). Até então, este material era considerado estéril, uma vez que os circuitos de beneficiamen

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20

Du, Preez Rudolph C. "Effect of lime additions and bulk chromium content on chromium deportment in smelter matte-slag systems." Thesis, Stellenbosch : Stellenbosch University, 2010. http://hdl.handle.net/10019.1/17459.

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Thesis (MScEng) –Stellenbosch University, 2010<br>ENGLISH ABSTRACT: More mining houses are turning their attention to the processing of ore mined from the UG2 reef. This is mainly due to the depletion of the Merensky reef or the low availability of ore from the Platreef. With the higher UG2 ore concentration in the process feed, companies experience more problems with the processing of the ore due to its high chrome content. Although there are various possible solutions to the problems experienced in the processing of UG2 ore, very little of thise solutions are actually implemented in th

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21

Becker, Megan. "The mineralogy and crystallography of pyrrhotite from selected nickel and PGE ore deposits and its effect on flotation performance." Thesis, Pretoria : [s.n.], 2009. http://upetd.up.ac.za/thesis/available/etd-09272009-100136/.

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22

Santos, Joel Martins dos. "Comparação entre rotas tradicionais de beneficiamento de minérios para a concentração de alumínio metálico em escórias." Universidade Tecnológica Federal do Paraná, 2013. http://repositorio.utfpr.edu.br/jspui/handle/1/1481.

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A etapa final da reciclagem do alumínio, após coleta, classificação e limpeza é sua transformação em ligas comerciais através da fundição do metal reciclado e sua correção química. Um dos impactos relevantes deste processo é a geração de escórias que representa um dos principais fatores de custo. A escória é um subproduto que surge na superfície do metal líquido decorrente da sua oxidação, da presença de impurezas nas sucatas e da adição de sais fundentes. Normalmente são ricas em alumínio metálico sob a forma de pequenas gotículas que se aprisionam em seu interior e podem levar a perdas consi

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23

Groenewald, Jacobus Willem de Villiers. "Modelling and control of an autogenous mill using a state space methodology and neural networks." Thesis, Stellenbosch : Stellenbosch University, 2002. http://hdl.handle.net/10019.1/52940.

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Thesis (MScEng)--University of Stellenbosch, 2002.<br>ENGLISH ABSTRACT: Metallurgical processes are often high dimensional and non-linear making them difficult to understand, model and control. Whereas the human eye has extensively been used in discerning temporal patterns in historical process data from these processes, the systematic study of such data has only recently come to the forefront. This resulted predominantly from the inadequacy of previously used linear techniques and the computational power required when analysing the non-linear dynamics underlying these systems. Furtherm

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24

Coetzee, Lodewicus Charl. "Robust nonlinear model predictive control of a closed run-of-mine ore milling circuit." Thesis, Pretoria : [s.n.], 2009. http://upetd.up.ac.za/thesis/available/etd-09272009-103725/.

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25

Crane, Martin John. "Geochemical studies of selected base metal minerals from supergene zone /." View thesis, 2001. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20030721.132607/index.html.

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Thesis (PhD) -- University of Western Sdyney, 2001.<br>"A thesis presented in accordance with the regulations governing the award of the degree of Doctor of Philosophy, University of Western Sydney" "November 2001" Bibliography: leaves 249 - 254.

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26

Swanepoel, Francois. "Estimation of particle size distributions in mineral process systems using acoustic techniques." Thesis, Stellenbosch : Stellenbosch University, 2000. http://hdl.handle.net/10019.1/51746.

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Thesis (MEng)--Stellenbosch University, 2000.<br>ENGLISH ABSTRACT: A desire to increase the efficiency of the comminution process in mineral process systems has led to the need of determining the size distribution of ore particles at various stages in the system. The objective of this research is to investigate the feasibility of the use of an acoustic sensor for measuring particle size distribution. The acoustic signal generated when the particles impact on a cantilever bar is analysed using digital signal processing techniques. As rocks fall onto a metal bar, the bar vibrates. The vibr

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27

Andrews, Lesley. "Base metal losses to furnace slag during processing of platinum-bearing concentrates." Diss., Pretoria : [s.n.], 2008. http://upetd.up.ac.za/thesis/available/etd-01222009-172643/.

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28

Deursen, Caio Moreira Van. "Métodos de desaguamento e disposição de rejeito da bauxita: estudo de caso e avaliação econômica." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/3/3134/tde-23022017-103826/.

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Cerca de 230 milhões de toneladas de bauxita são produzidas por ano e, destas, 60 milhões são provenientes de operações que beneficiam esta bauxita usando água como meio para separar as frações mais finas. Como consequência do beneficiamento, estima-se que mais de 25 milhões de toneladas de rejeito sejam dispostas todo ano. Estas frações têm grandes quantidades de caulinita, um argilomineral de difícil desaguamento. Estes sólidos estão tipicamente em uma suspensão com água a cerca de 15% de concentração em massa antes de operações de desaguamento. As formas de desaguamento variam, bem como as

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29

Убай, Юсеф Саламах Аль Мададха, Юсеф Саламах Аль Мададха Убай та Jusef Salamakx Al Madadkha Ubay. "Автоматичний контроль ступеня здрібнення руди в технологічних комплексах флотаційного та магнітного збагачення". Thesis, Видавництво НГУ, 2010. http://ir.nmu.org.ua/handle/123456789/90.

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Дисертація на здобуття наукового ступеня кандидата технічних наук за спеціальністю 05.13.07 – Автоматизація процесів керування. Національний гірничий університет. Дніпропетровськ, 2010<br>Диссертация на соискание ученой степени кандидата технических наук по специальности 05.13.07 – автоматизація процессов управления. Национальный горный університет. Днепропетровск, 2010<br>Dissertation on scientific degree of Candidate of Technical Science on specialty 05.13.07 – Automation of processes of commanded. – National Mining University, Dnipropetrovsk, 2010<br>Дисертація присвячена вирішенню актуальн

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30

Mukepe, Kahilu Moise. "Identification and control of wet grinding processes: application to the Kolwezi concentrator." Doctoral thesis, Universite Libre de Bruxelles, 2013. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209562.

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Enhancing mineral processing techniques is a permanent challenge in the mineral and metal industry. Indeed to satisfy the requirements on the final product (metal) set by the consuming market, control is often applied on the mineral processing whose product, the ore concentrate, constitutes the input material of the extractive metallurgy. Therefore much attention is paid on mineral processing units and especially on concentration plants. As the ore size reduction procedure is the critical step of a concentrator, it turns out that controlling a grinding circuit is crucial since this stage accou

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31

Ford, Merrill Anthony. "Simulation of ore dressing plants." Thesis, 2015. http://hdl.handle.net/10539/16662.

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32

Makhula, Mpho Johanna. "Beneficiation of fine ores using the Longi wet high magnetic separator." Thesis, 2014. http://hdl.handle.net/10539/18081.

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Magnetic separation has been used since 1955 for processing a variety of minerals from iron ore in steel production to the desulphurisation of coal. The accumulation of such fines and slimes during mining operations and the increasing global demand for quality products motivated the use of the semi-continuous pilot wet high intensity magnetic separator (WHIMS) introduced in 2008. Its unique features were considered to be favourable for beneficiating a Sishen low grade hematite-rich ore and an ash-rich Witbank coal. An automated Mineral Liberation Analyser (MLA) was used to characterise t

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33

Ross, Edwin Harm. "Measurement by use of the rotating cylinder technique of the rate of the solution of Winterveld chromite ore in slag." Thesis, 2015. http://hdl.handle.net/10539/19232.

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34

Steenkamp, Joalet Dalene. "Beneficiation of an ilmenite waste stream containing undesirable levels of chromite." 2003. http://upetd.up.ac.za/thesis/available/etd-09232008-121624.

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35

Sekgarametso, Katlego. "Flotation of non-sulphide PGM ores - Optimization of flotation reagent suite and conditions." Thesis, 2018. https://hdl.handle.net/10539/27276.

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A dissertation submitted to the faculty of Engineering and the Built Environment, University of Witwatersrand, Johannesburg, in fulfilment of the requirements for the degree of Master of Science in Engineering November 2018<br>The aim of this study is to improve the flotation of non-sulphide PGM ores from the Mimosa Mine in the Great Dyke of Zimbabwe by evaluating a variety of collector reagents that have not been tested on such material before and applying a full factorial experimental design to investigate the effects of the main primary collector, co-collector and depressant on PGM recov

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36

Steenkamp, J. D. (Joalet Dalene). "Beneficiation of an ilmenite waste stream containing undesirable levels of chromite." Diss., 2003. http://hdl.handle.net/2263/28141.

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Please read the abstract in the section, 00front, of this document (Role and responsibility of the author)<br>Dissertation (MEng)--University of Pretoria, 2008.<br>Materials Science and Metallurgical Engineering<br>unrestricted

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37

Grey, IE. "Applications of solid state chemistry to minerals and mineral processing." Thesis, 2003. https://eprints.utas.edu.au/20005/13/Grey_thesis_front_matter.pdf.

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Throughout his career, a consistent aim of the candidate's research has been to apply the methods of solid state chemistry to solve metallurgical and mineral processing problems, while maintaining and developing his disciplinary skills and techniques. The work has thus involved parallel inputs to fundamental research and to applied research for mining and manufacturing companies. The candidate's scientific specialisation is in crystallography and phase equilibria. In crystallography he has worked on the determination of the structures of complex minerals and synthetic materials and the elucid

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38

Tom, Phakamile. "Optimization of dense medium cyclone plant for the beneficiation of low grade iron ore with associated high proportion of near-density material at Sishen Iron Ore Mine." Thesis, 2016. http://hdl.handle.net/10539/20042.

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A research report submitted to the Faculty of Engineering and the Built Environment, University of the Witwatersrand, Johannesburg, in partial fulfilment of the requirements for the Degree of Master of Science in Engineering (Metallurgy and Materials Engineering) July 2015<br>The research report is premised on three aspects which are critical in the heavy mineral beneficiation. These aspects are classified as (i) understanding the densimetric profile of the available ore body, (ii) understanding the properties of the heavy medium utilised at the plant to beneficiate the ore, and (iii) the aut

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39

Craig, Ian Keith. "Robust controller specification and design for a run-of-mine milling circuit." Thesis, 1993. https://hdl.handle.net/10539/24289.

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A thesis submitted to the Faculty of Engineering, University of the Witwatersrand, Johannesburg, in fulfilment of the requirements for the degree of Doctor of Philosophy.<br>A new approach to the problem ofdesigning a control system for a run-of-mine (ROM) milling circuit is described. The ROM mill control problem is formalized in terms or a general linear system synthesis and analysis framework. Using this framework, u-synthesis and analysis is applied to a model of an industrial ROM milling circuit. The milling circuit uncertainty structure is obtained from plant perturbation tests. Corr

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40

Corbett, Lance Brendan. "The viability of beneficiating vanadium pentoxide to ferrovanadium in South Africa." Thesis, 1992. http://hdl.handle.net/10539/23589.

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A research report submitted to the Faculty of Mining Engineering. University of Witwatersrand, Johannesburg, in partial fulfillment of the requirements for the degree of Master of Science in Engineering<br>Hlstorically South Africa has enjoyed a privileged position with its vast natural resource base in that it has.not needed to generate wealth but has merely explored this base, The only true way to create wealth, is to add value to a commodity by means of beneficiation, South Africa is the world's largest producer of vanadium accounting for approximately 70% of the western world's requi

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Ravindran, Indira. "Beneficiation Studies On Molybdenite Ore From Harur Area, Tamil Nadu." Thesis, 1999. https://etd.iisc.ac.in/handle/2005/2387.

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Molybdenum is a versatile alloying and refractory metal of strategic importance. In India almost all molybdenite is obtained currently as st byproduct from copper and uranium deposits. The present Indian production is only about 66 tonnes while the demand is over 1000 tomes. It thus becomes important to explore newer deposits of molybdenum and develop efficient beneficiation strategies to recover the metal. A potential source of primary rnolybdenite has been found in the Ham area of Dharmapuri district in Tamil Nadu. In the present investigation, taking into consideration the importance of

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42

Ravindran, Indira. "Beneficiation Studies On Molybdenite Ore From Harur Area, Tamil Nadu." Thesis, 1999. http://etd.iisc.ernet.in/handle/2005/2387.

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Molybdenum is a versatile alloying and refractory metal of strategic importance. In India almost all molybdenite is obtained currently as st byproduct from copper and uranium deposits. The present Indian production is only about 66 tonnes while the demand is over 1000 tomes. It thus becomes important to explore newer deposits of molybdenum and develop efficient beneficiation strategies to recover the metal. A potential source of primary rnolybdenite has been found in the Ham area of Dharmapuri district in Tamil Nadu. In the present investigation, taking into consideration the importance of th

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43

Kahn, Riyard. "Optimisation of reagent addition during flotation of a nickel sulphide ore at the Nkomati Mine concentrator." Thesis, 2017. http://hdl.handle.net/10539/22965.

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A dissertation submitted to the faculty of Engineering and the Built Environment, University of Witwatersrand in fulfilment of the requirements for the degree of Master of Science in Engineering 28 January 2017<br>Batch scale laboratory testwork was conducted to evaluate collector and depressant addition on flotation performance of a nickel sulphide ore. The objectives of the study were to: 1. develop an understanding of the effects of collector and depressant dosage, and its interactive effects, on flotation performance and 2. determine the effect of stage dosing collector and depressant o

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44

Buswell, Andrew Mark. "An electrochemical investigation into the floatability of pyrrhotite." Thesis, 1998. http://hdl.handle.net/10539/22047.

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A dissertation submitted to the Faculty of Engineering, University of the Witwatersrand, in fulfillment of the requirements for the degree of Mastel' of Science in Engineering Johannesburg 1998<br>Impala's Minerals Processing Plant in the Rustenburg Area, South Africa, uses flotation to beneficiate precious metal bearing ores from the Bushveld Complex. Pyrrhotite is one of the sulphide minerals that is targeted but it is the least amenable to current flotation conditions having the lowest recovery. Electrochemical techniques (mixed potential measurements, cyclic voltammetry and current

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45

Ramlall, Nigel Valentino. "An investigation into the effects of UG2 Ore variability on froth flotation." Thesis, 2013. http://hdl.handle.net/10413/11262.

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South Africa is the world’s largest producer of platinum group elements (PGEs). Mining takes place in the Bushveld Complex, and recent statistics, (Mudd, 2010), showed that the UG2 reef is the main source of production, accounting for approximately 60% of world mining production. However, recovery by flotation is complicated by variations in the mineral composition, the need to grind fine and entrainment of chromite, which has an adverse effect on the subsequent smelting of the concentrate. The recovery of PGEs is variable, and it is influenced by PGE feed properties such as degree of liberati

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46

Beyeme, Zogo Jean-Clement. "Beneficiation potential of low-grade iron ore from a discard lumpy stockpile and fines tailings dam at Beeshoek mine, Northern Cape Province, South Africa." Thesis, 2010. http://hdl.handle.net/10210/3415.

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M.Sc.<br>An estimated 98% of the iron ore exploited in the world is used in the manufacture of pig iron and steel, which are non-substitutable backbones of modern society. The rapid increase of world steel production over the last few years, driven mainly by economic growth in China, have required an equal increase in iron ore production, from 876.8 Mt in 2006 to 948.1 Mt in 2007. The increased rate of exploitation of iron ores has resulted in a rapid depletion of known high-grade iron ore deposits. This, in turn, has led to a dramatic increase of prices, especially for highly thought-after hi

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Viljoen, Willemien. "Phase relations in the system Cu-Fe-Ni-S and their application to the slow cooling of PGE matte." Thesis, 2002. http://hdl.handle.net/2263/28674.

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Moodley, Taswald Llewelyn. "The development of an experimental technique for UG-2 ore flotation." Thesis, 2013. http://hdl.handle.net/10413/11216.

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Production of platinum and associated metals is a major source of revenue for South Africa. Significant losses occur in the concentrating stage (10 to 15 per cent) and this research is focused on optimising platinum flotation. Research begins by conducting laboratory batch flotation tests. However, subsequent pilot-plant tests often produce different results. It is believed these differences arise from the artificial nature of laboratory techniques. This project was focused on improving flotation techniques in the laboratory. The largest source of platinum in South Africa is the UG2 reef and t

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Penberthy, Catharina Johanna. "The effect of mineralogical variation in the UG2 chromitite on recovery of platinum-group elements." Thesis, 2002. http://hdl.handle.net/2263/29887.

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Platinum-group elements (pGEs) are recovered from UG2 chromitite by milling and flotation. The mechanisms involved during beneficiation of this type of ore are still poorly understood, partly because of its complex nature. Image-analysis techniques were used to characterise the mineralogy ofUG2 chromitite from diverse geological environments, as well as the milling and flotation products derived from each of these ores. Postmagmatic alteration ofUG2 chromitite has a profound effect on the mineralogy, chemistry and recovery characteristics of the UG2 chromitite. Relatively unaltered UG2 chromit

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Hlabangana, Nkosikhona. "Investigation of the joint comminution and leaching process for a gold ore: an attainable region approach." Thesis, 2016. http://hdl.handle.net/10539/22446.

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A thesis submitted to the Faculty of Engineering and The Built Environment, University of the Witwatersrand, Johannesburg, in fulfilment of the requirements for the degree of Doctor of Philosophy in Engineering Johannesburg 12 September 2016<br>Comminution and leaching unit processes play a major role in extracting valuable minerals from ore. Most of the research reported in the literature has focused on optimising individual unit operations rather than on integrating the whole process. This thesis develops an integrated approach to mineral processing systems and flow sheets and is intended

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