Mineral processing
Browse 60 curated documents about mineral processing 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 mineral processing 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.
KASANDA MUKADI CEDRICK. Bac 3 Chimie industrielle.TFC
KASANDA MUKADI Cedrick, NGOY MASIALA Jacob
Le présent travail a pour objectif d’évaluer l’impact de l’adoucissant Luproset 1178 sur la flottation du calcium et la décantation. Cette étude s’inscrit dans le cadre du projet de flottation inverse initié par l’entreprise KCC, qui consiste à flotter les minéraux calciques, afin d’éviter leur consommation d’acide lors de la lixiviation et le risque de formation de gypses. Cependant, dans un proc
Valuable Metals Recovery by Mineral Processing and Hydrometallurgy
Marinela Ivanova Panayotova, Vladko Panayotov
This special issue focuses on the recovery of valuable metals through advanced methods in mineral processing and hydrometallurgy. The objective is to highlight innovative techniques and approaches for improving the efficiency and sustainability of metal recovery processes. The methodology employed includes a review of current practices and research developments in the area, as well as discussions
Advances in Mineral Processing and Hydrometallurgy—3rd Edition
Corby G. Anderson
The third edition of Advances in Mineral Processing and Hydrometallurgy provides a comprehensive overview of recent developments in the field aimed at improving efficiency and sustainability in mineral processing techniques. The objective of this special issue is to consolidate research findings and innovative applications that enhance extraction techniques and minimize environmental impacts assoc
Metallurgical performance of a next generation coarse particle flotation cell in sulfide ore processing
Marly Carvalho, Cagri Emer
This study evaluates the performance of a novel coarse particle flotation (CPF) cell that operates using a froth-feeding mechanism, designed to simplify operation relative to fluidized-bed systems and to enhance coarse mineral recovery without requiring feed pre-classification or fluidization. Laboratory tests were conducted on copper – gold ore using two feed size distributions: a non-classified
Testing of magnetic processability of mixed hematite-magnetite ores from Gruvberget, Northern Sweden
Stefan Reisinger, Kari Niiranen
LKAB intends to reopen Gruvberget mine in Svappavaara. As the deposit contains a significant amount of hematite and hematite-magnetite mixed ore, the processability of the ore by a sequence of Low Intensity Magnetic Separation and High Gradient Magnetic Separation was systematically tested. The raw materials analysis comprised a comparative study of 5 differing samples originating from drill cores
FACULTY OF TECHNOLOGY
Sageenthan Anantharaja, Saija Luukkanen
An effective classification system for the grinding circuit is a critical prerequisite to controlling circulating load, excessive generation of fines, and ultimately, stable flotation performance. This thesis investigated the effect of injecting water at the apex of a hydrocyclone (Cyclowash, CW) on hydrocyclone classification in the industrial autogenous (AG) grinding circuit at the Boliden Kevit
ALTIN KAZANIMINDA FLAŞ FLOTASYON VE GRAVİTE İLE
Emre Erkan, Zafir Ekmekçi
Altın ve altına bağlı sülfür minerallerinin geri kazanılması çok aşamalı kazanım işlemi gerekmektedir. Bu çalışmada, gravite ve flaş flotasyon proseslerinin performansları karşılaştırılarak, altın kazanım süreçlerine etkileri incelenmiştir. Laboratuvar ölçeğinde gerçekleştirilen modelleme simülasyon çalışmaları, farklı akım şemaları üzerinde yapılmıştır. Standart GRG, flaş ve kaba flotasyon kineti
Assessing the Effect of Cone Ration, Feed Solids Concentration and Viscosity on Hydrocyclone Performance
Pharaoh Muzanenhamo
In the mineral processing industry, comminution circuits contain slurries composed of a mixture of particles of varying degrees of liberation and size. Hydrocyclones are commonly used to classify these particles. If the classification stage is not efficient, both grinding and flotation cannot be optimised or operated efficiently. Ores that are mined in industry contain metals of varying specific g
First Announcement:Layout 1
J.D. Grobler, J.B. Bosman
This paper explores the performance measurement of heavy mineral gravity separators, focusing on the limitations of current methodologies that primarily assess grade and recovery of valuable heavy minerals. The objective is to introduce findings from Qemscan® particle mineral analysis (PMA) as an alternative approach. A detailed methodology is discussed, highlighting the significance of considerin
Master's Thesis Template
Kelechi Benedict Ezurike, Saija Luukkanen
This master's thesis investigates the dry or waterless processing of minerals from mine to mill, focusing on optimizing mineral separation techniques. The objective is to explore various dry processing methodologies to enhance efficiency and reduce environmental impact. The methodology includes a comprehensive analysis of mineralogy, the effects of different dry comminution methods, and the applic
Oxides of Heavy Metals
F. T. DAVIS, S. ZAMAN
This section deals with the oxides of heavy metals, specifically columbium and tantalum, rare earths, chromium, manganese, titanium, tin, and tungsten. The objective is to provide a comprehensive overview of these commodities, including their production figures and specifications in 1977. The methodology involves summarizing data regarding the common commercial minerals associated with these commo
MINERALS AND COAL PROCESS CALCULATIONS by SUBBA RAO, D. V (z lib.org)
D. V. Subba Rao
This book presents a comprehensive analysis of mineral processing and coal technology, focusing on their fundamental principles and calculations. The objective is to provide a clear understanding of the various types of minerals and coal, including their properties and the methods used for their processing. The methodology includes detailed explanations of proximate analysis, material balance, sam
516856074 Comminution Handbook Edited by Alban Lyn
Alban Lynch
The Comminution Handbook, edited by Alban Lynch, serves as an authoritative reference source for the field of comminution, bridging the gap between specialist texts and accessible resources for newcomers. This handbook was conceived due to the lack of a comprehensive source that encapsulates the breadth of comminution processes, including crushing, grinding, and classification of a diverse range o
302967228 Extractive Metallurgy
Prof Richard Amankwah
This module on extractive metallurgy focuses on mineral processing techniques relevant to both hydrometallurgy and pyrometallurgy, designed for students at the African University of Science and Technology in Abuja. The objective is to provide a comprehensive overview of different methods of extracting valuable minerals from ores. The methodology encompasses leaching techniques, including both agit
VALORISATION DES MINERAIS DE LA ZONE ARTISANALE TONDO ZEA 555 PAR LAVAGE.
Eunice OMBA TSHIYANGI, CT. Ir. Tresor MIMPIYA NGAMBA
Ce travail presente les resultats d une etude portant sur la concentration de minerai de la zone artisanale de Tondo. La procedure adoptee est celle de faire un classement dimensionnel au moyen d un classificateur a vis ou d un trommel, lequel classement nous permettra egalement de faire une concentration compte tenu de la repartition des metaux dans les differentes tranches granulometriques. Les
Solvent extraction circuits
N. DAVE
In the mineral processing industry, the selective extraction of certain minerals such as uranium, thorium, and vanadium is achieved through solvent extraction processes that involve bringing two immiscible phases into contact for effective mass transfer. This study describes the fundamental processes and the design of a multi-stage counter-current solvent extraction plant tailored for uranium extr
Ion Exchange and Solvent Extraction in Mineral Processing
H.E. JAMES
In the past decade, there has been a notable increase in the development of selective ion-exchange resins and solvents, alongside ion-exchange and solvent-extraction equipment tailored for mineral processing. This surge in interest led to the recent Symposium on Ion Exchange and Solvent Extraction in Mineral Processing held at the National Institute for Metallurgy (NIM) on February 7th and 8th, 19
2025 Anderson Mineral Processing Hydrometallurgy Review
Corby G. Anderson
The third edition of the Special Issue of Metals focuses on advancing the fields of mineral processing and hydrometallurgy, which are essential for the extraction of critical minerals and metals required for renewable energy applications. This edition is unique as it merges these two disciplines, which are rarely considered together, thereby highlighting their combined significance in modern metal
IMG 0013 SCH
KABILA WA BANZA Chadrack
Ce rapport de stage présente de manière détaillée l'ensemble des activités réalisées durant ma période de stage au sein de l'entreprise Mutanda Mining. L'objectif de ce travail était d'acquérir une expérience concrète dans le domaine de la métallurgie, particulièrement l'hydrométallurgie, tout en appliquant les connaissances théoriques acquises lors de ma formation académique. La méthodologie adop
Modeling and Simulation of the Flotation Process in the Treatment of Critical Raw Materials
Jakub Kurty, Michal Marcin
Flotation is one of the most widely used separation methods in mineral processing, and its performance is strongly influenced by complex physicochemical and hydrodynamic conditions. This study investigates the application of laboratory-derived flotation kinetic models for the simulation of a pilot-scale flotation circuit treating a polymetallic sulfide ore containing critical raw materials. Labora
Optimizing the Flotation Recovery of Chromite and Olivine: A Comparative Multi-Parameter Approach Using a Fatty-Acid-Based Collector
Savas Ozun
The efficient separation of chromite from olivine remains a critical challenge in mineral processing due to their industrial significance and frequent co-occurrence in ultramafic deposits. Conventional gravity separation methods are ineffective for fine-grained ores, leading to chromite losses and reduced concentrate grades, thereby necessitating alternative approaches such as froth flotation. How
Assessment of Better Enrichment Mechanisms to Selectively Separate Rare-Earth-Bearing Minerals from Barite and Fluorite
Mahmut Camalan, Özgün Cem Özgür
Enrichment of rare-earth-bearing minerals is essential for the downstream extraction of rare-earth elements. This paper presents the results of preliminary flotation and other separation tests, collectively aimed at assessing better methods for separating a rare-earth-bearing mineral (bastnasite) from Ca-bearing (fluorite) and Ba-bearing (barite) minerals in a Turkish rare-earth ore. The ore was b
Enhancing Quartz-Amine Flotation with Oily Bubbles
Sercan Erbas, Can Gungoren, Saleban Mohamed Muse, Mert Terzi, İsmail Demir, Ilgin Kursun, Orhan Ozdemir
Flotation is a well-established method in mineral processing, particularly for the beneficiation of low-grade and complex ores that cannot be efficiently concentrated by physical methods. The objective of this study is to explore the effectiveness of flotation methods, specifically focusing on the interactions between bubbles and particles as a critical factor influencing flotation efficiency. Met
A Soft Sensor for Inferring Energy Efficiency of Wet-Closed Ball Mills
Diego Rafael Monteiro Diniz, Gustavo de Oliveira Morais, Agnaldo José da Rocha Reis, Alan Kardek Rêgo Segundo
The comminution process accounts for most of the energy consumption in ore beneficiation plants. Measuring energy consumption is crucial to ensure efficient control and meet granulometric specifications with low energy consumption. However, this measurement is not straightforward and requires specialized equipment to quantify product retention at a specific mesh size. This process is labor-intensi
Recovery of valuable metals from copper slags as secondary resources: Selected laboratory-scale case studies
Fatma Arslan, Gülay Bulut, Cüneyt Arslan
Pyrometallurgical extraction of metallic copper from copper concentrates generates several by-products, among which copper slag constitutes one of the most voluminous solid residues. These slags are generally composed of iron oxides, silica, calcium oxide, alumina, and varying amounts of unrecovered copper. Despite their common disposal by stockpiling or use as landfill material, copper slags may
Bioleaching of arsenic rich cobalt mineral resources and eviden 2020 Hydrom
D. Barrie Johnson, Agnieszka Dybowska
Experiments were carried out to test the amenabilities of mineral deposits that contained cobalt deported in arseno-sulfide (cobaltite) and arsenide (skutterudite) minerals, to oxidative bioleaching at mesophilic temperatures and low pH. An ore sample from the Iron Mask deposit (Canada) and a mineral concentrate from a working mine (Bou Azzer, Morocco) were thoroughly characterised, both prior to
2026 Acquah Nickel Cobalt Extraction from Lateritic Ores
Gertrude Acquah, William Skinner
The accelerating transition to low carbon energy systems has intensified the demand for nickel and cobalt from low-grade (<1.5 wt.%) refractory lateritic ores. This study aims to address the challenges and explore opportunities in the extraction of these metals from complex low-grade ores. We employed a combination of selective comminution-classification, mechanical activation through stirred-medi
2026 Xiang Fine particle blockage in uranium ground leaching
Wenjie Xiang, Qingliang Wang
The "cliff-like" clogging in underground leaching uranium injection systems remains a critical technical challenge constraining production efficiency. Field observations indicate that fine suspended particles formed under acidic leaching conditions are the primary causative factors. This study systematically investigated the pressure variations and effluent turbidity patterns of silica fine suspen
2026 Xiao Fluidized roasting and gold leaching of carbonaceous ore
Hanxin Xiao, Shunwen Wei
Carbonaceous gold ores are difficult to process due to the preg-robbing effect of carbonaceous matter and the encapsulation of gold within gangue minerals. In this study, fluidized bed oxidation roasting in a controlled O2/CO2 atmosphere (O2:CO2 ratio of 1:4 and a total flow rate of 2 L/min) was proposed as a pretreatment to enhance gold leaching from a refractory carbonaceous gold ore. The effect
Combination of mineral processing and leaching steps to produc 2026 Waste Ma
Agathe Hubau, Anne-Gwenaelle Guezennec
In a context of depletion of resources and tensions on supplies, it is now becoming necessary to develop recycling methods for end-of-life wastes that may contain high metal contents. With this objective, the CAREME project aims to produce new Pd and Au catalysts from electronic waste via short routes without intermediate production of pure metals. In this project, the first step consists in the p
2024 Ketegenov Citric acid leaching of rare earths from coal ash
Tlek Ketegenov, Kaster Kamunur
The study investigates the application of high-voltage electrical pulses (HVEP) as a pretreatment to enhance the leaching efficiency of rare earth elements (REE) from coal ash (CA) produced from the combustion of Ekibastuz Basin coal in Almaty, Kazakhstan. HVEP treatment was applied to the finest (<40 µm) non-magnetic fraction of CA under controlled conditions, optimizing discharge current, voltag
2017 Ordonez Multicomponent heap leaching model for caliche ore
Javier I. Ordoñez, Alicia Condori
Caliche is a mineral exploited in northern Chile, from which iodine and nitrate salts (saltpeter) are obtained. This ore is the most important source of iodine in the world and is processed mainly by heap leaching using water as a leaching agent. Heap leaching of caliche ore is performed by the stacking of Run-Of-Mine (ROM) material, with particle size distribution varying greatly, from a few mill
2017 Choi Microwave pretreatment for thiourea gold leaching
Nag-Choul Choi, Bong-Ju Kim
In this research, we studied the use of microwave pretreatment to enhance the efficiency of Au leaching from gold concentrate. The gold concentrate was pretreated using microwaves with different irradiation time. The sample temperature was increased up to 950 ◦C by the microwave irradiation. A scanning electron microscope-energy dispersive spectrometer showed the evolution of microcracks and the r
2016 Huang Selective vanadium pressure leaching from stone coal
Jun Huang, Yimin Zhang
A novel staged leaching process has been reported in this paper to selectively extract vanadium from roasted stone coal and the mechanisms have been clarified. Results showed that the leaching efficiency of V, Al, P and Fe was 80.46%, 12.24%, 0.67% and 3.12%, respectively, under the optimum dilute sulfuric acid dephosphorization (DSAD)-two-stage pressure acid leaching (PAL) conditions. The efficie
2026 Haller Lithium recovery from smectite clays
Cara Philipa Haller, Christie Dorfling
The growing lithium demand has led to increasing interest in low-grade clay deposits. In this study, a roast–leach process was investigated for the recovery of lithium from a Southern African smectite-rich clay deposit. Screening of various roasting additives showed that a binary system comprising sodium sulphate and calcium sulphate yielded the highest lithium dissolution during subsequent water
RECOVERY OF HUANGMEI LIMONITE BY FLASH MAGNETIC ROASTING TECHNIQUE
Wen Chen, Xinghua Liu
Limonite, a collective for iron hydroxide argillaceous materials, presents significant challenges for treatment due to its diverse characteristics and high argillization during processing. This study focuses on the Huangmei limonite in Hubei, China, which illustrates typical limonite issues. Conventional methods yield an iron concentrate grade of merely 51.98% with a recovery of 86.64%. In contras
Fluidization and Magnetization Roasting Technology Research on Siderite
Wen Chen, Zhenhong Liao
A research-scale fluidization and magnetization roasting device was developed to evaluate a processing option that might offset the complexity and high cost of the conventional magnetization roasting process on siderite. In this study, the operating parameters of the fluidization and magnetization roasting device for siderite were evaluated through cold-flow tests and magnetization roasting tests.
Study on the Reaction System of Copper and Iron Sulfides during Roasting
E Brocchi, P Jena
Sulfi de concentrates are essential raw materials in metallic copper production, as their roasting processes yield various products, such as copper sulphate and iron oxides. This study aimed to investigate the thermodynamics and kinetics of the roasting reaction system involving copper and iron sulfides, providing insights into necessary conditions for selectively obtaining specific compounds. Usin
The Magnetizing Roasting of Pyrite Bearing Concentrates
V. A. Luganov, T. A. Chepushtanova
This research investigates the processing of pyrite concentrates through a preliminary enrichment step that involves magnetic separation to remove iron sulfides. The conversion of non-magnetic pyrite to magnetic pyrrhotites is achieved via roasting, which removes a portion of sulfur, resulting in ferromagnetic pyrrhotites with hexagonal structure. The study examines the magnetic properties of the
Chlorination Roasting of Rare Earth Element Oxides
Daniel W. Gaede, Bryce D. Ruffier
The Army Research Laboratory (ARL) has an interest in the recovery and processing of rare earth elements. At Montana Tech, elevated temperature chlorination of rare earth oxides is presently being investigated as a potential method leading to the selective separation and recovery of rare earth elements from mineral ores and concentrates. After preliminary evaluation, ytterbium oxide was selected a
PRELIMINARY CFD STUDIES OF A CONTINUOUS INDUSTRIAL SCALE FLUIDIZED BED ROASTER
Swagatika DASH, Rahul K. SONI
Continuous fluidized bed roasters are widely utilized in industries for the oxidation of sulphide ores. This study examines a roaster with a height of 24.5 meters, a freeboard diameter of 16.85 meters, and a bed diameter of 12.5 meters, featuring a distributor with 12,300 nozzles of 6 mm diameter, allowing for two material inlets for zinc concentrate, a gas outlet for top products, and a bottom pr
Twenty years of experimental and numerical studies on microwave-assisted breakage of rocks and minerals —a review
Khashayar Teimoori, Ferri Hassani
Microwaves have been used for a variety of applications in the past two decades. However, there has been a significant and growing interest in the applications of microwaves in hard rock breakage and mineral processing industries. The purpose of this review paper is to focus on these applications and to present a careful review of the state-of-the-art experimental and numerical modeling techniques
Mineral Processing and Metal Extraction on the Lunar Surface - Challenges and Opportunities
Matthew G. Shaw, Matthew S. Humbert
The lunar surface is extremely harsh and current mineral processing and metal extraction technologies are not adequately equipped to address this environment. In this paper we review the metals available for extraction and conditions at the lunar surface, and analyse the challenges associated with comminution, beneficiation, and metal extraction operations. The potential beneficial effects of the
Novel Binders and Methods for Agglomeration of Ore
S. K. Kawatra, T. C. Eisele
Heap leaching is one of the methods being used to recover metal from low grade ore deposits. The main problem faced during heap leaching is the migration of fine grained particles through the heap, forming impermeable beds which result in poor solution flow. The poor solution flow leads to less contact between the leach solution and the ore, resulting in low recovery rates. Agglomeration of ore in
TREATMENT OF THE TINTAYA SKARN COPPER OXIDE
L. R. Chirinos, K. N. Batallanos
The Tintaya mine of BHP Copper, located in Southern Peru, includes a copper oxide deposit hosted in a mineralized skarn zone. The ore contains large amounts of clays and high acid consuming species resulting in low heap leaching performance. A treatment scheme was proposed that included a wet screening separation. The coarse fraction would be treated by heap and the fines by agitation leaching. Th
Demand Side Management of a Run-of-Mine Ore
B. Matthews, I.K. Craig
Increasing electricity costs coupled with lower prices for some metals such as platinum group metals, require a reevaluation of the operation of grinding processes. Demand side management (DSM) has received increasing attention in the field of industrial control as an opportunity to reduce operating costs. DSM through grinding mill power load shifting is presented in this paper using model predict
EXTREMUM SEEKING CONTROL OF GRINDING MILL CIRCUITS BASED ON GRIND
Lukasz Ziolkowski
Mineral processing plants include several operations to liberate the valuable minerals within raw ore material to produce a concentrate, which is processed into a usable product by a metallurgical refinery. A significant aspect of this process is the comminution stage, which greatly affects the operational costs and efficiency of the plant. This study aims to develop a control framework to optimiz
EXTREMUM SEEKING CONTROL OF GRINDING MILL CIRCUITS BASED ON GRIND
Lukasz Ziolkowski
Mineral processing plants encompass various operations aimed at liberating valuable minerals from raw ore material to produce a concentrate for further processing. A prominent stage in this process is comminution, where raw ore is processed through grinding mill circuits to achieve fine particles for effective mineral separation. This stage is critical as it significantly impacts the net revenue o
HYBRID NON-LINEAR MODEL PREDICTIVE CONTROL OF A RUN-OF-MINE ORE
Stefan Botha, I.K. Craig
A run-of-mine (ROM) ore milling circuit is primarily used to grind incoming ore containing precious metals to a powder fine enough to liberate the valuable minerals contained therein. The ground ore has a product particle size specification that is set by the downstream separation unit. However, controlling a ROM ore milling circuit has challenges due to unmeasurable process outputs, non-lineariti
HYBRID NON-LINEAR MODEL PREDICTIVE CONTROL OF A RUN-OF-MINE ORE
Stefan Botha, I.K. Craig
A run-of-mine (ROM) ore milling circuit plays a crucial role in processing ores containing precious metals to achieve a particle size suitable for the liberation of valuable minerals. The effective management of the ROM milling circuit, which includes components such as a mill, sump, and hydrocyclone, poses significant challenges due to unmeasured process outputs, inherent non-linearities, time de
DEVELOPMENT OF PERFORMANCE FUNCTIONS
Donghui Wei, Ian K. Craig
This thesis investigates the economic performance assessment (EPA) of control systems, which is gaining significance in both academic and industrial contexts. The objective is to develop performance functions (PFs) that serve as tools for estimating the benefits of control upgrade projects and enhancing the economic performance of control systems. A methodology is proposed for creating PFs, utiliz
Journal of Process Control 129 (2023) 103067
Zander M. Noome, Johan D. le Roux
The model predictive static programming (MPSP) technique, which is extended recently to incorporate applicable state and control constraints, operates on the philosophy of nonlinear model predictive control (NMPC). However, it reduces the problem into a lower-dimensional problem of control variables alone, thereby enhancing computational efficiency significantly. Because of this, problems with lar
THE DEVELOPMENT OF DYNAMIC MODELS FOR A DENSE MEDIUM SEPARATION CIRCUIT IN COAL BENEFICIATION
Ewald Jonathan Meyer
Dense medium separation (DMS) plants are crucial for the beneficiation of run-of-mine (ROM) coal in metallurgy, where maintaining the quality and yield of production poses significant challenges due to variations in ROM quality. This study aimed to develop a first principle dynamic mathematical model for a DMS circuit to aid in enhancing control systems that can effectively manage product throughp
Economic performance assessment of two ROM ore milling circuit controllers
Donghui Wei, Ian K. Craig
Economic performance assessment of control systems is receiving increasing attention in both academia and industry. A relevant framework is proposed in Bauer and Craig based on a comprehensive survey of the methods for economic analysis of advanced process control systems. The framework provides a formal procedure for the economic assessment of control systems. A practically motivated simulation s
THE FLOTATION OF HIGH TALC-CONTAINING
VELAPHI MOSES NASHWA
This project investigates the optimisation of platinum-group metals recovery at the Mimosa Mine in Zimbabwe. The first part of this research investigates how collector performance can be improved by using collector combinations (mixtures) of the standard sodium iso-butyl xanthate with a secondary collector. The synergistic effect of the sodium-iso-butyl-xanthate (SIBX) combined with trithiocarbona
Simulation of Grinding Media Motion and Collisions in Wet-Operated Accelerator-Mill Using DEM Coupled with CFD
Kang He, Minping Jia
The relative motion and collision between grinding media in a wet-stirred accelerator mill are modelled using the discrete element method (DEM) coupled with computational fluid dynamics (CFD). The local average normalized grinding media velocity profile is employed to divide the grinding chamber into four volumes, which facilitates the analysis of the stress energy distribution. The local grinding
Prediction of Circulation Load of Side-Flanged High-Pressure Grinding Rolls Closed-Circuit Crushing
Nan Li, Lixia Li
To enhance the performance of the combined high-pressure grinding roller (HPGR) and tower mill (TM) process for −1 mm particle size, this study addresses the key technical challenges of insufficient material quantity (<100 kg) and complex experimental procedures in HPGR closed-circuit crushing tests by proposing a novel circulating load prediction method based on the principle of mass balance and
Considering Specific Ion Effects on Froth Stability in Sulfidic Cu-Ni-PGM Ore Flotation
Malibongwe S. Manono, Kirsten C. Corin
The mining and mineral processing of Cu-Ni-PGM sulfide ores in South Africa occurs in semi-arid regions, presenting challenges regarding water resource scarcity. As a response, mineral concentrators are increasingly engaging in the recycling and re-use of process water, which alleviates reliance on municipal water and addresses environmental regulations on freshwater usage, aligning with Sustainabl
Effects of Sodium Silicate on Flotation Separation of Sphalerite and Dolomite and Its Mechanism
Longqian Ni, Jinfang Lv
Sphalerite often co-exists with dolomite, a carbonate mineral containing calcium and magnesium. In the flotation process of sphalerite, dolomite entering into the concentrate will have a considerable negative impact on the subsequent smelting. Therefore, the effects of sodium silicate on the flotation separation of sphalerite and dolomite and its mechanism were investigated in this study. It was f
Machine Learning Algorithms for Semi-Autogenous Grinding Mill Operational Regions' Identification
Pedro Lopez, Ignacio Reyes
Energy consumption represents a significant operating expense in the mining and minerals industry. Grinding accounts for more than half of the mining sector’s total energy usage, where the semi-autogenous grinding (SAG) circuits are one of the main components. The implementation of control and automation strategies that can achieve production objectives along with energy efficiency is a common goa