Mining
Browse 60 curated documents about mining in The Archive — the 2RA-Edition digital library for engineering and scientific research. This collection of books, journal articles, theses, reports, and technical documents on mining spans extractive metallurgy, mining engineering, chemistry, and applied science. Every document is searchable in full text; sign in to read, download, ask AI questions about any document, or generate cited research drafts with the AI Researcher.
EVALUATION Du RESEAUX DE TRANSPORT DE MUTANDA MINING
KIKUMI NGOIE Franklin, Auguy MUHOTA
Cette étude analysera le réseau de transport de Mutanda Mining en mettant l'accent sur l'évaluation des réseaux miniers et non miniers. L'objectif principal est d'identifier les forces et les faiblesses de l'infrastructure de transport actuelle, ainsi que d'explorer des solutions potentielles pour améliorer son efficacité. La méthodologie inclura une évaluation détaillée des réseaux à travers des
ETUDE COMPARATIVE DES PERFORMANCES DU BROYEUR AUTOGENE AVANT ET APRES SA CONVERSION EN SEMI AUTOGENE « CAS DU CIRCUIT CM6 AU CONCENTRATEUR DE KAMOTO »
MUTATSHI KAMANDA Ken, John KASONGO WA KASONGO
Ce présent travail vise à évaluer les performances techniques, opérationnelles et économiques de la conversion du broyeur autogène en semi autogène, afin d’identifier ces impacts sur les performances du circuit CM6 au concentrateur de Kamoto. L'étude s'appuie sur des données d’exploitation du broyeur avant et après sa conversion, complétées par une analyse granulométrique, pour mesurer les amélior
ANALYSE TECHNICO-ECONOMIQUE DE L’INFLUENCE DE LA MAILLE DE FORAGE CARREE ET EN MAILLE QUINCONCE SUR LA FRAGMENTATION : niveau 1130- CUT3 cas de la mine de KOV
MBUYA KABAMBA Mardochée, JIMMY KALENGA
Dans une mine à ciel ouvert, le chargement, le transport et le concassage dépendent directement de la qualité de la fragmentation obtenue par abattage à l'explosif. Ce travail cherche à déterminer, pour les terrains T3 et T3D du niveau 1130 du Cut 3, laquelle des deux dispositions géométriques maille carrée ou en quinconce, offre le meilleur compromis entre qualité de fragmentation, sécurité des o
ETUDE DES IMPACTS DES ELEMENTS TOXIQUES ISSUES DES OPERATIONS MINIERES SUR L’ENVIRONNEMENT. Cas de la mine de Kamfundwa
KUTEMBA SARAH Ange, NGOY BIYUKALEZA BILEZ
La mine à ciel ouvert de Kamfundwa, exploitée par la Gécamines dans la ceinture cuprifère katangaise, est analysée dans le contexte d'une demande internationale croissante en cuivre et en cobalt. L'objectif de cette étude est d'évaluer comment les opérations d'exploitation minière à Kamfundwa libèrent des éléments toxiques et leurs impacts sur l'air, l'eau, le sol et la végétation environnants. La
ANALYSE D’IMPACTS DE LA FRAGMENTATION SUR L’AGLOMERATION ENVIRONNANTE DANS LA MINE À CIEL OUVERT DE KOV,CUT 5A1 NIVEAU 1220
NGOY BANZA DAN, KALENGA KAUNDE Jimmy
Cette étude examine les impacts de la fragmentation sur l’agglomération environnante de la mine à ciel ouvert de Kov, Cut 5A1 Niveau 1220. L'objectif principal est d'évaluer comment les activités de minage affectent l'environnement local et la qualité de vie des communautés avoisinantes. Une méthodologie mixte a été adoptée, incluant des analyses de terrain, des mesures des vibrations générées par
A CASE STUDY ON THE OPERATION OF A FLOTTWEG TRICANTER® CENTRIFUGE FOR SOLVENT-EXTRACTION CRUD TREATMENT AT BWANA MKUBWA, NDOLA, ZAMBIA
Anthony Mukutuma, Nils Schwarz
Bwana Mkubwa is a copper cathode producer located in Ndola, Zambia, operating at a capacity of 50,000 tons per annum and owned by First Quantum Minerals. The solvent-extraction circuit of Bwana Mkubwa was initiated in 1997, with operations expanded in 2002 to include ore treatment from the Lonshi mine in the Democratic Republic of Congo. This adaptation resulted in an increase of solids in the fee
COMPARISON OF SOLVENT EXTRACTION AND SELECTIVE PRECIPITATION FOR THE PURIFICATION OF COBALT ELECTROLYTES AT THE LUILU REFINERY, DRC
L. M. Roux, E. Minnaar
The classic technique to remove impurities in a cobalt stream is selective precipitation, typically followed by re-leaching to produce an advanced electrolyte for cobalt electrowinning. While this method achieves adequate cobalt concentration in the electrowinning circuit, it often leads to unwanted losses during multiple precipitation steps, ultimately resulting in lower recoveries. This study ev
Determination of Copper in Organic Media from Solvent Extraction Mining Systems Via Portable Energy-Dispersive X-Ray Fluorescence Analysis
Z. Ruetz
Portable X-ray fluorescence (pXRF) analysis has gained popularity in geochemical and environmental applications as a cost-effective alternative to traditional analytical methods. This study presents a novel method for quantifying organic copper content in solvent extraction circuits by stripping the chelated metal with concentrated sulfuric acid and analyzing the resulting solution using pXRF. The
Up-scaling of froth flotation equipment
C.R. Boeree
The up-scaling of flotation equipment has been investigated based on comparisons between laboratory, pilot and industrial scale flotation tests and a characterization study of large-scale industrial flotation cells in Boliden’s Aitik copper mine in Northern Sweden. The use of high volume flotation cells has nowadays become more and more common to deal with the production of high capacity, low-grad
Econometric Models for Optimal Decisions in Mining Industry
Marius BULEARCĂ, Cornelia NEAGU
This paper intends to present different models for the decision-making process in mining, focusing on the essential role of econometric analysis in optimizing operations. The objective is to develop a framework that enables stakeholders in the mining industry to make informed and economically sound decisions regarding mineral extraction. A comprehensive methodology is utilized to assess the econom
The Hydro-Metallurgy of Copper
M. Eissler
This work presents a comprehensive overview of the hydro-metallurgical treatment of cupriferous ores, detailing the processes adopted and the manufacture of copper vitriol. The objective is to provide an in-depth understanding of the methodologies employed in treating copper ores through hydro-metallurgy, which has gained popularity due to its effectiveness. The methodology involves examining the
Etude de la synergies de deux collecteurs sécondaires (AM810 et METCOL11) sur la performance de la flotation des minérais sulfurés cas de Kinsenda Copper Company
MAKINA KATOMA Marcel, ILUNGA MUTOMBO
Cette étude vise à analyser les synergies de deux collecteurs secondaires, AM810 et METCOL11, sur la performance de la flottation des minerais sulfurés dans le cas de Kinsenda Copper Company. L'objectif est d'évaluer l'impact de ces collecteurs sur le rendement métallurgique et la récupération des métaux précieux. Pour ce faire, des essais de flottation ont été réalisés en laboratoire, en variant
Why Accounting for Uncertainty and Risk can Improve Final Decision-Making in Strategic Open Pit Mine Evaluation
L A Martinez
The objectives of this paper are two-fold. First, it will show what problems can arise when single estimated values are substituted for a distribution of values when evaluating an open pit mine project in the face of uncertainty. Secondly, it will show how the ability to deal with uncertainty and risk in mine project evaluation can have a significant impact on the owners’ and stakeholders’ investm
Valuation of a hypothetical mining project under commodity price and exchange rate uncertainties by using numerical methods
Behnam Aminrostamkolaee, Jeffrey S. Scroggs
One of the goals presented here is the use of a radial basis function (RBF) method to approximate the numerical values of a gold mining project. RBFs have many attractive features compared to implicit finite differences method (FDM) and explicit FDM. They are mesh-free, computationally more efficient in high dimensions, and very accurate. In other words, the model is more comprehensive, and result
Uncertainty assessment for the evaluation of net present value: a mining industry perspective
Ö. Erdem, T. Güyagüler
The mining industry faces considerable risks due to reliance on orebody estimations that involve numerous uncertain factors impacting investment decisions. This paper aims to analyze the sources of uncertainties and their influence on project evaluations, particularly focusing on the context of net present value (NPV) assessments. A modern approach to uncertainty evaluation, particularly through M
Towards sustainable mining (Part I): Valuing investment opportunities in the mining sector
R. David Espinoza, Javier Rojo
Reliance on classical valuation methods such as the net present value (NPV) has often resulted in controversial asset valuations in the mining sector. An alternative method, termed decoupled net present value (DNPV), is used to evaluate mining investment opportunities. The proposed valuation method decouples the time value of money from the risk associated with the project providing a consistent v
The optimisation rule for investment in mining projects
Nam Foo, Harry Bloch
Investment in mining projects involves significant uncertainty, influenced by high risks, irreversibility, and economic factors, particularly commodity price volatility. This paper explores how mineral price uncertainty affects mining investment decisions in the Asia-Pacific region. Utilizing the mean reversion (MR) model, the study determines the commodity trigger value for investment decisions w
Risk Model of Long-Term Production Scheduling in Open Pit Gold Mining
R Halatchev, P Lever
Open pit gold mining is a critical sector in the Australian mining industry, characterized by significant investments necessitating efficient management amidst considerable uncertainty. This paper presents a risk model specifically designed for long-term production scheduling in open pit gold mines, built on full discounted cash flow analysis (DCFA). The model incorporates all stochastic variables
Process to improve expected value of mining operations
M.-A. Cardin, R. de Neufville
This paper presents an improved appraisal process that correctly recognises the increased expected value of mining operations attributable to intelligent management response to changing operating conditions and market prices. It highlights the option value of flexibility in the exploitation of deposits, leading to better selection of properties for finance and development. The evaluation method em
Parametric estimation of capital costs for establishing a coal mine
Shafiee, M., Topal, E.
Capital cost estimates are critical for the decision-making process in mining projects, influencing whether they proceed, are delayed, or abandoned. This study addresses the lack of literature on capital cost estimation in coal mining, particularly in countries like South Africa, which face challenges due to inadequate historical data. The objective is to explore parametric estimation methods for
NPV risk simulation of an open pit gold mine project under the O’Hara cost model by using GAs
Franco-Sepulveda Giovanni, Campuzano Carlos
This paper analyzes an open pit gold mine project based on the O’Hara cost model. Hypothetical data is proposed based on different authors that have studied open pit gold projects, and variations are proposed according to the probability distributions associated to key variables affecting the NPV, like production level, ore grade, price of ore, and others, so as to see what if, in a gold open pit
Investment Risk Evaluation of Siirt Madenköy Copper Mine in Turkey
Merve Karaabat Varol, İbrahim Uğur
Mining investments are high-risky investments due to mineral deposit uncertainties. Therefore, before any investment decision is given, an economic assessment should be performed and several risk situations must be taken into consideration. In this study, it was examined whether or not an investment made in a copper mine in Siirt, Turkey is economical by using Sensitivity Analysis and Monte Carlo
Estimating the Cost of Equity Using a Mining Build‑up Model
Petr Bora, Michal Vaněk
Among other methods, build-up models have been used to value equity. However, the build-up models are usually general models to appraise business and financial risks, and thus cannot fully mirror the special characteristics of different industries. The article presents a new model called ‘Mining Build-up Model’ to assess the risks of mining companies. The model has four modules of risks (A – Busin
Economic Variables of the Mineral Projec
Michal Cehlár, Ivana Cehlárová
The paper explores the economic variables influencing cash flow within mineral projects by analyzing essential factors affecting investment decisions. The primary objective is to provide reliable insights into designing effective mining projects through quantitative assessments of various parameters such as production costs, recovery efficiencies, and the impact of different financing methods. A s
A METHODOLOGICAL MODEL TO ASSIST IN THE (1)
José A. Botín, Ronald R. Guzmán
Identifying, quantifying, and minimizing technical risks associated with investment decisions is a key challenge for mineral industry decision makers and investors. However, risk analysis in most bankable mine feasibility studies are based on the stochastic modelling of project “Net Present Value” (NPV) which, in most cases, fails to provide decision makers with a truly comprehensive analysis of r
METALLURGICAL PROCESS INFORMATION GOLD ORE PROCESS OPTIONS
DARRELL M. HLADUN
Barrick Gold Corporation has actively participated in the gold mining industry since 1983, operating various mines across North and South America. The objective of this document is to outline the metallurgical processes and technologies employed in gold ore extraction and processing. A comprehensive review of several processing methods, including acidic pressure oxidation, alkaline pressure oxidat
THE STATE OF THE ART IN SEPARATING AND PURIFYING THE HEAVY RARE EARTHS: SOLVENT EXCHANGE, ION EXCHANGE, AND SOLID PHASE EXTRACTION, WHICH IS THE OPTIMAL PROCESS?
J. Lifton, R. Hammen
The purification of rare earth elements (REE) at mining operations is traditionally accomplished by multiple chemical phase-transfer processes including precipitation, solvent extraction, and ion exchange. We describe REE purification results with Solid Phase Extraction (SPE) columns that were developed to improve the speed and economy of REE purification. The SPE columns have the properties of en
A Major Advance in Liquid Ion Exchange Technology
Minerals Industries and Research Groups
In early 1970, General Mills Chemicals, Inc. announced the introduction of an improved liquid ion exchange reagent, LIX 64N, aimed at enhancing copper recovery from various solutions, including dump leach liquors. This paper presents a summary of performance results following its implementation, highlighting its effectiveness and selectivity compared to its predecessor, LIX 64. The methodology inv
IMG 0018 SCH
MWENZE MALENGE Akim, Christian TWITE KITWA
Ce rapport présente les résultats d'un stage effectué au sein de l'entreprise Kamoto Copper Company (KCC) à Kolwezi, visant à acquérir des connaissances pratiques sur les opérations minières et les méthodes d'extraction de minerais. L'objectif principal était de comprendre le fonctionnement de la mine souterraine ainsi que les différentes méthodes d'exploitation à travers une rotation dans les dép
Comparative Technological Routes for Processing Chromo-Magnesian Ore Materials into Chemical and Metallurgical Products: A Systematic Review
Yerlan Zhumagaliyev, Yerbol Shabanov
Chromo-magnesian ore materials constitute a complex resource base for producing both metallurgical and chemical products, yet existing research remains fragmented across beneficiation, smelting, chemical extraction, waste valorization, and refractory applications. This systematic review, conducted according to PRISMA 2020 using Scopus, Web of Science Core Collection, and SpringerLink, evaluates pr
A Case Study on the Mineralogical Origins of Zinc Misreporting to an Industrial Pyrite Concentrate and Its Mitigation by Regrinding-Assisted Flotation
Shiqi Liu, Long Niu
The selective separation of sphalerite from Fe-bearing sulphides remains a persistent challenge in the flotation of complex sulphide ores and can lead to Zn misreporting to Fe-bearing concentrates. This study aimed to identify the origins of Zn misreporting to a pyrite concentrate and to evaluate whether regrinding-assisted flotation could mitigate Zn misreporting. XRF, XRD, zinc phase analysis, f
RAPPORT DE STAGE EFFECTUE A L'ENTREPRISE MUTANDA MINING (MUMI)
LENGE SAMPALA MEDARD, Didier MWAMBA
Ce rapport décrit les expériences et les connaissances acquises lors d'un stage de deux mois à l'entreprise Mutanda Mining (MUMI), situé en République Démocratique du Congo. L'objectif principal de ce stage était d'appliquer les concepts théoriques d'électromécanique à des situations pratiques dans un environnement industriel. Pour ce faire, des activités telles que la maintenance préventive, la g
06 Grinding Media Shape Efficiency
Evangelos Petrakis, I. Alexopoulos
Given that comminution is one of the most energy-intensive stages in mining and metallurgical operations, improving grinding efficiency not only reduces electricity consumption and the associated CO₂ emissions but also promotes sustainable and environmentally responsible practices, thereby minimizing the overall environmental footprint of these sectors. Thus, the objective of this study is to eval
Effect of Media Shape on Grinding Efficiency and Sustainability of the Mining Industry
Evangelos Petrakis, I. Alexopoulos
Given that comminution is one of the most energy-intensive stages in mining and metallurgical operations, improving grinding efficiency not only reduces electricity consumption and the associated CO₂ emissions but also promotes sustainable and environmentally responsible practices, thereby minimizing the overall environmental footprint of these sectors. Thus, the objective of this study is to eval
Percolation Leaching: The status globally and in Southern Africa
Amado Guzman, Jochen Petersen
This document presents a comprehensive overview of percolation leaching techniques and their status both globally and specifically in Southern Africa. The objective is to elucidate the advancements and practices in percolation leaching, highlighting various methodologies applied in heap leaching operations. The information gathered is based on both theoretical insights and practical experiences of
TRAITEMENT PAR VOIE HUMIDE D’UN REJET MIXTE A GANGUE TRES DOLOMITIQUE « CAS DES REJETS DE FLOTTATION DE RUASHI MINING/ PROJET MUSONOI »
BWAMBU BUPE Emmanuel, Jean-Marie KANDA
Ce travail présente une étude sur la lixiviation ammoniacale suivie d'une extraction par solvant des rejets fortement dolomitiques de Ruashi Mining. L'objectif principal était d'optimiser le processus d'extraction des éléments de valeur, comme le cuivre et le cobalt, présents dans les rejets, qui contiennent en moyenne 0,77 % Cu et 0,08 % Co. Les méthodologies employées impliquent des essais de li
Gold Recovery Beyond Ores: Sources, Processes, Challenges, and Prospects
Jovana Djoki´ c, Stefan Nikoli´ c
Gold (Au) is a strategically critical metal whose technological relevance and increasing demand contrast with the long-term decline in primary ore grades. This review discusses gold recovery from primary ores providing the metallurgical and technological baseline for the comparative evaluation of unconventional Au-bearing resources. Emphasis is placed on electronic waste and copper anode slimes as
Efficient Leaching and Kinetic Analysis of Rare Earth Elements from Rare-Earth-Enriched Residues of Associated Rare Earth Phosphate Ores
Jiawei Lin, Jue Kou
The efficient recovery of rare earth elements from associated rare-earth-bearing phosphate ores is of paramount importance for expanding the supply of rare earth resources. In contrast to conventional studies that focus on extracting rare earths either from phosphate concentrates or from phosphogypsum generated during the sulfuric acid wet-process, this study takes as its subject the rare-earth-en
ELABORATION D’UN AVANT-PROJET D’EXPLOITATION DU GISEMENT DE LA ZONE 5 BIS. « Cas de la mine souterraine de Kamoto »
KAYEMBE MBAYO Franck, Augustin MUHOTA KAWINDA
Ce mémoire porte sur l'élaboration d'un avant-projet d'exploitation du gisement de la zone 5 bis de la mine souterraine de Kamoto. Située dans un contexte géologique complexe et soumise à d'importantes contraintes géotechniques, cette zone représente un véritable défi en matière de conception et de planification minière. L'objectif principal de l'étude est de proposer un cadre méthodologique perme
CONTRIBUTION A L’OPTIMISATION DES PARAMETRES DE FRAGMENTATION DANS LE DEVELOPPEMENT PRIMAIRE DANS LA ZONE 4, EN VUE D’AMELIORER L’AVANCEMENT DANS RAT ET RSC
KALOMBO NGWEJ Enock, JIMMY KALENGA
Cette étude porte sur l’optimisation des paramètres de fragmentation dans le développement primaire de la Zone 4 de la mine souterraine de Kamoto, en considérant les formations RAT (roches argilo-talcueuses) et RSC (roches siliceuses cellulaires). L’objectif principal est d’améliorer les performances d’avancement des galeries, dont les valeurs observées (2 à 2,5 m/cycle) restent inférieures aux pr
EVALUATION TECHNICO-ECONOMIQUE ET OPTIMISATION DE L'ABATTAGE A L'EXPLOSIF DANS LA CHAINE DE PRODUCTION Cas De La Zone 4 Rampe 40 Accès 2 De La Mine Souterraine De Kamoto
MBANGU MUTAZA Agay, AUGUSTIN MUHOTA
Ce mémoire se concentre sur l’évaluation des opérations de minage à la mine souterraine de Kamoto, en mettant l'accent sur l'abattage à l'explosif, une étape essentielle de la chaîne de production. L'objectif principal est d'optimiser les paramètres de forage et de chargement en explosifs pour améliorer la fragmentation, réduire les coûts de concassage et accroître l'efficacité globale. La méthodo
EVALUATIONS DES OPERATIONS D’ALIMENTATION D’UNE USINE «Cas de la mine de Mutanda»
NAWEZI MWENGU NATHANAEL, Augustin MUHOTA KAWINDA
Les opérations d'alimentation de l'usine constituent un maillon essentiel de la chaîne de production minière. Leur efficacité détermine directement la continuité du traitement métallurgique, la stabilité des teneurs et la performance économique globale de l'exploitation. Ainsi, toute perturbation dans le processus de chargement, de transport ou de gestion des remblais peut entraîner des retards de
Cassiterite Leaching in Hydrometallurgy: A Review
Mabel Keke, Joseph Okechukwu Ezeugo
Certain hydrometallurgy processes are used in the majority of the main metal manufacturing processes that yield a final metal product. Tin is an essential strategic metal that is widely used in novel energy components, aircraft, and other cutting-edge industries. Yet, with decreasing availability of high-grade tin ores, the use of low-grade tin metals for metal tin processing is emerging as a sign
Direct Pressure Alkaline Leaching of Scheelite Ores and Concentrates
Patrícia Leitão, Aurora Futuro
The average global recovery rates for processing scheelite ores by physical methods typically range from 50 to 70%, and achieving a minimum grade of 60% WO3 in concentrates poses significant challenges. This research aimed to explore direct hydrometallurgical processing as a viable economic alternative for low-grade concentrates and medium- to high-grade ores, thereby enhancing recovery rates whil
A Review on the Recovery of Critical Metals from Mine and Mineral Processing Tailings: Recent Advances
Sait Kursunoglu
Over the past two decades, risk management in the mining sector has advanced significantly, increasingly prioritizing sustainable practices throughout the lifecycle of mining operations. A key component of this shift is the recovery of valuable materials from mining and mineral processing tailings, particularly critical and secondary raw materials, through the application of advanced reprocessing
Dynamic of Mining Systems: Impact of Cl− Ion Concentration on Heap Copper Leaching Process at Industrial Scale
Manuel Saldaña, Edelmira Gálvez
Analytical models are of vital importance to study the dynamics of complex systems, including the heap leaching process. In this work, a methodology to study the dynamics of copper recovery in the heap leaching by means of fit of analytical models that capture the leaching dynamics product of variations of leaching agents as a function of the feeding is proposed, establishing a first mode of opera
Maximizing Economic Performance in the Mining Industry by Applying Bioleaching Technology for Extraction of Polymetallic Mineral Deposits
Daniel Kržanović, Vesna Conić
There are many sources to increase value in an integrated mining–metallurgy context. The optimal strategy for concentration of minerals from the ore is one of these sources. The elements of mining-metallurgy operations from resources, infrastructure, mining site, processing, and metallurgy are mutually dependent, and reinforce and interact positively with each other to generate a combined value gr
Modeling of REE and Fe Extraction from a Concentrate from Araxá (Brazil)
Marisa Nascimento, Flávio Lemos
The study aimed to employ a comprehensive methodology for the acid processing of a rare earth element (REE) concentrate obtained from the ore from Araxá (MG-Brazil). The most important process variables have been identified and their levels determined to maximize REE extraction (%RE) and minimize Fe extraction (%Fe). The thermodynamic analysis showed that the roasting temperature (TF) is crucial f
Copper Recovery and Reduction of Environmental Loading from Mine Tailings by High-Pressure Leaching and SX-EW Process
Labone L. Godirilwe, Kazutoshi Haga
The flotation tailings obtained from Bor Copper Mine contain pyrite (FeS2) and chalcopyrite (CuFeS2), these sulfide minerals are known to promote acid mine drainage (AMD) which poses a serious threat to the environment and human health. This study focuses on the treatment of mine tailings to convert the AMD supporting minerals to more stable forms, while simultaneously valorizing the mine tailings
2021 Jia Industrial Heap Bioleaching of Copper Sulfide Ore Started with Only Water
Yan Jia, Heyun Sun
Sulfuric acid solution containing ferric iron is the extractant for industrial heap bioleaching of copper sulfides. To start a heap bioleaching plant, sulfuric acid is usually added to the irrigation solution to maintain adequate acidity (pH 1.0–2.0) for copper dissolution. An industrial practice of heap bioleaching of secondary copper sulfide ore that began with only water irrigation without the ad
A review of the effect of rheology on grinding, classification, flotation, and leaching processes
Işıl Tokcan
Slurry rheology, which encompasses the overall impact of inter-particle interactions such as aggregation, dispersion, and sedimentation particularly pronounced under fine-particle conditions, has long been acknowledged as a critical factor in determining processing efficiency. Fine particles can increase slurry viscosity and yield stress, making it more difficult to pump, transport, and process. T
New approach for flotation process modelling and simulation
J. Yianatos, P. Vallejos
The aim of this work consisted of developing a flotation model based on industrial data from modern and large mechanical flotation cells (up to 300 m3). Using industrial data from different flotation plants, a general model was developed considering the metallurgical performance, residence time distribution, and operational and hydrodynamic conditions. The model considers the behaviour of each cel
Determination of the mass transfer rate constant in a laboratory column flotation using the bubble active surface coefficient
Amir Eskanlou, Mohammad Reza Khalesi
This study aimed to introduce a new approach to determine the mass transfer rate constant in a laboratory column flotation through an analogy to a mass transfer process. The RTD of the column at two separate bubble sizes were modeled using both conventional N-mixer and N-mixer with back-mixing flow models. The number of perfect mixers (N) and the corresponding backflow coefficients (λ) were optimi
The Extractive Metallurgy of Gold
J. C. Yannopoulos
The extractive metallurgy of gold is a comprehensive exploration of the methods and processes involved in the extraction and recovery of gold from various ores. The objective of this work is to provide an extensive overview of the physical and chemical properties of gold, the types of ores containing it, and the innovative techniques employed in its extraction. A thorough methodology is presented
Barrick Goldstrike Roaster Facility Roasting and Gas Handling
A. Cole, J. McMullen
The roasting and gas handling circuits at Goldstrike's new Roasting Facility incorporate proven technologies in a unique combination. The objective was to recommend the most robust and economical process for Goldstrike's carbonaceous resources and optimize roast conditions based on prior extensive testing. A series of pilot plant campaigns were conducted using Freeport-McMoRan's whole ore roasting
Sustainable Copper Production Based on Fluid-Bed Roasting Technology
M. Wrobel, J. Hammerschmidt
Fluid-bed technology plays a crucial role in the pyrometallurgical processing of various ores and concentrates. This paper discusses the extensive research and development by Metso Outotec over the past 50 years to broaden the applicability of fluid-bed technology in copper production. Specifically, it highlights processing routes that include partial, sulfate-producing, and dead roasting, with a
Extraction of copper from complex carbonaceous sulfide ore by direct high-pressure leaching
Labone L. Godirilwe, Refilwe S. Magwaneng
The increase of impurities and complexity of copper ores are among the recent challenges in the mining industry. Complex carbonaceous sulfide ores are extremely difficult to treat due to their mineralogical complexity and impurities of organic carbon and carbonates. This study focuses on the development of a hydrometallurgical process for efficient copper extraction from complex carbonaceous sulfi
OPTIMISATION DES PARAMETRES DE FILTRATION EN VUE DE REDUIRE L’HUMIDITE DU CAKE D’HYDROXYDE DE COBALT DE 68% A 60%
TSHINYEMBA KANDALA Fils, NGAMBA MIMBO Guelord
Cette étude vise à optimiser les paramètres de filtration afin de réduire l'humidité du cake d'hydroxyde de cobalt de 68% à 60% dans le cadre de l'usine Mutanda Mining. Une approche statistique a été adoptée pour développer un modèle mathématique contrôlant l'humidité à la sortie des filtres presses, en évitant les baisses de production liées aux pannes des séchoirs causées par des bouchages de la
Leaching Practices at Mantos Blancos
G. Tapia, R.J. Kelley
Empresa Minera de Mantos Blancos S.A. operates two copper mines in Chile: Mantos Blancos and Mantoverde. This study aims to define the leach processes suitable for each ore type by conducting extensive metallurgical testwork during the feasibility study of both projects. The methodology involved the selection of a combination of heap and dump leaching for Mantoverde, while a modified vat leach ope
HYDROCOPPERTM- ECONOMICAL TREATMENT FOR COPPER AND GOLD CONCENTRATES AT THE MINE SITE
Olli Hyvärinen, Pertti Lamberg
The HydroCopperTM process, developed by Outokumpu Technology, introduces a novel chloride leaching method for the efficient treatment of copper sulphide concentrates directly at the mine site, aiming to enhance copper production and facilitate the utilization of low-grade ores. This study investigates the feasibility of the HydroCopperTM technology, which not only allows for the extraction of high