
显示样式: 排序: IF: - GO 导出
-
Leaching of copper from a flash furnace dust using sulfuric acid Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2021-01-03 G. Ríos; I. Ruiz; O. Rius; M. Cruells; Antonio Roca
ABSTRACT Flash furnace dusts generated in copper pyrometallurgy are habitually recirculated to the furnace for copper recovery and as a cold burden material. However, it is necessary bled the dusts in order to reduce the amount of impurities to be recycled to the furnace. The most important processes for the treatment of Flash furnace dusts applied at the industrial scale are hydrometallurgical and
-
Impact of Phase Evolution in Platreef and UG-2 Concentrates on Matte Drainage in the Black Top of a Platinum Group Metal Smelter Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-12-28 Oscar Rivera Li Kao; Andrie Garbers-Craig
ABSTRACT The melting behavior of Platreef and UG–2 platinum group metal (PGM) concentrates was studied under conditions typically found in the black top of PGM smelters. In order to understand how the phase changes influence the separation between matte and slag, the concentrates were characterized before and after firing at eight temperatures from 800°C to 1480°C. The PGM concentrates were isothermally
-
Depression Mechanism of a Novel Depressant on Serpentine Surfaces and Its Application to the Selective Separation of Chalcopyrite from Serpentine Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-12-25 Xiaolong Zhang; Yuexin Han; Peng Gao; Xiaotian Gu; Shaoxing Wang
ABSTRACT Serpentine, a typically magnesium phyllosilicate gangue mineral, is often associated with chalcopyrite. In the process of flotation, serpentine is easy to get into the concentrate together with useful minerals, which seriously affects the quality of concentrate products. In this study, galactomannan (GM) was introduced for effectively separating chalcopyrite from serpentine with sodium butyl
-
Effect of Magnesium Species on Cationic Flotation of Quartz from Hematite Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-12-25 Deisiane Ferreira Lelis; Rosa Malena Fernandes Lima; Geriane Macedo Rocha; Versiane Albis Leão
ABSTRACT In the Quadrilátero Ferrífero Region, located in the state of Minas Gerais – Brazil, the utilization of recycled water from the tailing dams in the reverse cationic flotation of siliceous iron ores is common practice. In such process, ore concentrates assigning dolomite (2.5% to 10%) besides quartz in the mineral gangue, do not reach the desired specification for the production of blast furnace
-
The Effect of Complexing Reagents on Flotation of Sulfide Minerals and Cassiterite from Tin-Sulfide Tailings Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-12-21 T.N. Matveeva; V.A. Chanturiya; V.V. Getman; N.K. Gromova; M.V. Ryazantseva; A.Y. Karkeshkina; L.B. Lantsova; V.A. Minaev
ABSTRACT Using a combination of UV-spectrophotometry, IR-Furie spectroscopy, analytical scanning electron (LEO 1420VP INCA OXFORD ENERGY 350) and laser (KEYENCE VK-9700) microscopy the effect of complexing reagents DBDTC, TMPPh, TOFA, and IM-50 on adsorption layer on the surface of chalcopyrite, galena, arsenopyrite, and cassiterite was studied. The individual formation character of the adsorption
-
Process Optimization and Flowsheet Development for Zinc and Copper Recycling from Reverberatory Furnace Flue Dust Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-12-20 S. Jamali; S. Javanshir; H. Arabyarmohammadi; P. Tahmasebizadeh
ABSTRACT The copper flue dust is an important secondary source for various metals and also a potential threat to the environment. In this study, a process was developed to convert a local copper flue dust containing 20.60% copper, 21% iron and 2.88% zinc into value-added products via a hydrometallurgical route. The response surface methodology was applied for the optimization of base metals leaching
-
Separation of Cobalt, Nickel, and Copper from Synthetic Metallic Alloy by Selective Dissolution with Acid Solutions Containing Oxidizing Agent Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-12-13 Thanh Tuan Tran; Hyun Seung Moon; Man Seung Lee
ABSTRACT The dissolution behavior of Co, Ni, and Cu and the metallic mixture in acid solutions like HCl, H2SO4, CH3SO3H, and CH3COOH and their mixture with H2O2 was investigated. The effect of parameters such as acid and H2O2 concentration, pulp density, reaction temperature, and time on the dissolution of metals was studied. The CH3SO3H-H2O2 system showed highly selective leaching ability for Co over
-
Flotation Froth Phase Bubble Size Measurement Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-12-13 C. Bhondayi
ABSTRACT In this work, methods to measure froth phase bubble sizes in mineral froth flotation are reviewed. For each method, the state of development, the equipment set-up, bubble size estimation procedure, and the pros and cons are discussed. Further, techniques that have typically been applied in the study of foams in non-mineral processing fields that have a potential for use in the study of bubble
-
Solubility of Chromium in DON Smelting Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-12-06 Katri Avarmaa; Dan Strengell; Hannu Johto; Petri Latostenmaa; Hugh O’Brien; Pekka Taskinen
ABSTRACT Chromia-bearing raw materials in nickel and copper matte smelting are difficult to process due to their tendency of forming solid chromite spinel precipitates, leading to formation of mushy slag and buildups in the smelting vessel. The solubility of chromia in smelting slags, and especially in mattes, are not known accurately and new data for iron-silicate slags in equilibrium with low-iron
-
Characterization and Gold Extraction of Gold-bearing Dust from Carbon-bearing Gold Concentrates Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-12-01 Pan Cao; Shuanghua Zhang; Yajie Zheng
ABSTRACT Gold-bearing dust generated during the roasting process of refractory gold concentrates is valuable as secondary gold resources. In this study, the characterization of gold-bearing dust from carbon-bearing gold concentrates was determined by direct cyanidation and mineralogy research. Moreover, identification of refractoriness in the dust was determined by selective removal of minerals. Results
-
Reaction Mechanism of In-situ Carbon in Hematite Ore Pellet during Induration Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-11-08 Ammasi Ayyandurai; Jagannath Pal
ABSTRACT Carbon is used in the hematite ore pellet as a partial heat source for induration. Apart from this, it has several other roles in the pellet. To achieve the maximum benefit of carbon in pellet quality improvement and energy reduction, a detailed study on the mechanism of C reaction in hematite pellets is required. Although some investigators have reported improvement in pellet properties on
-
A Review on the Application of Starch as Depressant in Iron Ore Flotation Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-11-02 Swagat S. Rath; Hrushikesh Sahoo
ABSTRACT The depletion of high-grade iron ores has necessitated the beneficiation of low-grade iron ores. Flotation is considered the most efficient operation to upgrade the iron content of fine-grained ores that do not respond to gravity or size classification units. Out of several reagents used in iron ore reverse flotation, depressants play a crucial role in selectively making the iron oxides hydrophilic
-
Effective Utilization of Coal Processing Waste: Separation of Low Ash Clean Coal from Washery Rejects by Hydrothermal Treatment Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-10-26 Santosh Kumar Sriramoju; Varahala Babu; Pratik Swarup Dash; Saptarshi Majumdar; Debaprasad Shee
ABSTRACT Handling and disposal of high volume of fine coal tailings is a biggest challenge for coal washeries. Separation of clean coal by density separation and flotation shows limited yields of 23–28% and 13–14% respectively. Chemical leaching process has a challenge with the formation of insoluble salts. The present investigation aimed to separate clean coal by a combination of chemical-physical
-
Evaluation of Dry Processing Technologies for Treating Low Grade Lateritic Iron Ore Fines Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-10-25 V. Nunna; S. Hapugoda; Sreedhar Gaekwad Eswarappa; Shiva Kumar Raparla; M.I. Pownceby; G.J. Sparrow
ABSTRACT Dry processing options, involving the use of a circulating air classifier and thermal roasting (advanced microwave-assisted magnetizing roasting), followed by magnetic separation using an Induced Roll Magnetic Separator (IRMS), were evaluated for upgrading low-grade hematite-goethite iron ore fines. The novel magnetizing roast was conducted under reducing conditions using CO/CO2 gas mixtures
-
Extraction of Scandium and Iron from Red Mud Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-10-19 Ding Wei; Xiao Jun-Hui; Peng Yang; Shen Si-Yue; Chen Tao; Zou Kai; Wang Zhen
ABSTRACT Red mud as the main byproduct generated during alumina extraction from bauxite. Owing to the high iron content in the red mud and the high correlation between iron and scandium during the leaching process, it is necessary to extract the iron from the red mud and to further enrich the scandium in advance for the acid leaching extraction of scandium. In this research, the theory of red mud segregation
-
Effect of Thermal Oxidation Pretreatment on the Magnetization Roasting and Separation of Refractory Iron Ore Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-10-19 Qiang Zhang; Yongsheng Sun; Yuexin Han; Yanjun Li; Peng Gao
ABSTRACT The effect of thermal oxidization pretreatment (TOP) on the magnetization roasting and separation of refractory iron ore was investigated. The TOP of raw samples was performed in a muffle furnace at 750°C for 30 min. The magnetization roasting and separation experiments of the raw samples and TOP samples were performed, which revealed that TOP could decrease the optimal CO concentration required
-
Xanthan gum based investigations into the surface chemistry of cassiterite and beneficiation of cassiterite tailings Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-10-05 C. Nambaje; L. Mweene; Sajeev Subramanian; S Krishnan; M. Santosh
ABSTRACT The surface chemistry of cassiterite mineral and selective dispersion-flocculation-flotation studies on cassiterite tailings have been investigated using xanthan gum. Mineralogical studies indicate that quartz is the major mineral encapsulating cassiterite. The results of the adsorption, electrokinetic, co-precipitation, and Fourier Transform Infrared spectroscopic studies indicate that xanthan
-
The Effects of Pulp Rheology on Gravity Gold Recovery in Free Milling Gold Ore of the Tarkwaian Systems of Ghana Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-09-27 Eric Aminartey Agorhom; Clement Owusu
ABSTRACT Gravity gold characterization provides a comprehensive understanding on the effect of mineralogy, particle size, and liberation on gravity concentrator performance. This is of significant economic importance for gold ores with a high amount of coarse gold particles. In this study, the effect of pulp rheology on gravity recoverable gold (GRG) was investigated using a single-stage GRG test on
-
Selective Flotation of Scheelite from Calcite Using a Novel Reagent Scheme Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-09-22 Zhiyong Gao; Jian Deng; Wei Sun; Jianjun Wang; Yunfeng Liu; Fengping Xu; Qinghong Wang
Scheelite and calcite are usually intergrown calcium minerals that are separated via froth flotation. However, their selective separation remains difficult because of their similar surface properties. 2-phosphonobutane −1, 2, 4-tricarboxylic acid (PBTCA or H5L) is widely used in water treatment due to its low phosphorus content and efficient anti-scaling performance. With its excellent calcium-chelating
-
Transport Phenomena in Copper Bath Smelting and Converting Processes – A Review of Experimental and Modeling Studies Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-09-10 Kezhou Song; Ari Jokilaakso
Bath smelting and converting technologies for copper production have been improved, resulting in higher production efficiency and less polluting emissions. Reported studies on experimental and computational modeling approaches are reviewed in this paper, focusing on adjustable variables and flow details, for a thorough understanding of the complex flow phenomena of the high-temperature reactors used
-
Editorial Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-07-26
(2020). Editorial. Mineral Processing and Extractive Metallurgy Review: Vol. 41, No. 6, pp. 439-440.
-
Iron Precipitation Strategies from Nickel Laterite Ore Sulfuric Acid Leach Liquor Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-08-19 Marcelle de Fátima da Silva; Mateus Rodrigues de Sousa Oliveira; Iranildes Daniel dos Santos; Patrícia Radino-Rouse; Marcelo Borges Mansur
A two-step closed circuit, operated at 90–95ºC, was found suitable for practical iron removal from real sulfuric acid leach liquors, resulting in low losses of nickel and cobalt to the solid phase. In the first step, NH4OH was used as a reagent to treat iron-rich liquors (1.8 g.L−1 < [Fe]total <8.7 g.L−1) with an initial pH of 1.6 ± 0.1, and nickel and cobalt concentrations of 1.59 ± 0.05 g.L−1 and
-
Beneficiation of a Low-grade Phosphate Ore Using a Reverse Flotation Technique Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-08-13 Tatiana Aleksandrova; Abdalla Elbendari; Nadezhda Nikolaeva
This work aimed to upgrade a low-grade sedimentary phosphate ore through attrition scrubbing/desliming and an anionic/cationic reverse flotation technique. The mineralogical and chemical examination showed that the sample contained low-grade apatite minerals (P2O5 ~ 22.5%), and the main associated gangue minerals were gypsum and quartz. The effects of both collector and depressant dosage were investigated
-
Lithium Extraction from Spodumene by the Traditional Sulfuric Acid Process: A Review Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-08-12 Javier Rioyo; Sergio Tuset; Ramón Grau
The sulfuric acid process is the dominant technology for lithium extraction from spodumene. However, this process generates huge quantities of waste residue and needs high-temperature pretreatment. The process can be optimized if other high-value elements are found in spodumene deposits, residual lithium can be recycled during mining and processing, and energy savings can be achieved. This paper evaluates
-
Evaluation of Pressure Filtration of Coal Refuse Slurry: Effects of pH, Filtration, and Air-Blow Times Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-08-10 G.S.S. Raman; M.S. Klima
Coal refuse slurry impoundments have potential environmental concerns associated with water contamination and impoundment stability. Pressure filtration can be used as an alternative method of handling such coal waste streams as it offers an opportunity to stack the dewatered refuse solids for subsequent disposal, reducing or eliminating the need for the impoundment. A response surface methodology
-
Drying Kinetics of a Philippine Nickel Laterite Ore by Microwave Heating Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-08-06 Wei Lv; Yuntao Xin; Richard Elliott; Jingjing Song; Xuewei Lv; Mansoor Barati
ABSTRACT The microwave drying of a Philippine nickel laterite ore was proposed as an alternative drying method to reduce the air pollution before further pyrometallurgical processing. The effect of thickness of ore bed and microwave power on the specific energy consumption and effective diffusivity were assessed. The results show that the specific energy consumption decreases with increasing the bed
-
Platinum Group Elements Mineralogy, Beneficiation, and Extraction Practices – An Overview Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-07-28 P. Sahu; M. S. Jena; N. R. Mandre; R. Venugopal
Platinum group elements have become imperative to many modern industrial applications (automobiles, jewelry, pharmaceuticals, electronics, fuel cells, etc.) but are mined in only a few places. Characterization followed by beneficiation and extraction of these elements has many challenges for the applied mineralogist and mineral engineers due to its ultratrace concentration (2–4 ppm), small grain size
-
Flotation of Fine Particles: A Review Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-07-23 Saeed Farrokhpay; Lev Filippov; Daniel Fornasiero
Literature shows that flotation is highly size dependent and processing both coarse and fine size fractions is problematic. The latter is the subject of the current paper. Fine particles have a relatively high surface area, and therefore more reagents are needed for their processing. In addition, the problem of fine particle flotation is mainly due to their low collision and attachment efficiencies
-
Kinetic and Mechanism Studies Using Shrinking Core Model for Copper Leaching from Chalcopyrite in Methanesulfonic Acid with Hydrogen Peroxide Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-07-23 Jiajia Wu; Junmo Ahn; Jaeheon Lee
ABSTRACT An investigation on copper leaching from a chalcopyrite concentrate in methanesulfonic acid (MSA) and hydrogen peroxide at 75°C was carried out. Periodic additions of H2O2 were applied to enhance chalcopyrite dissolution and the reaction mechanism was analyzed using a shrinking core model. The results revealed that compared with the addition of H2O2 at the very beginning, periodic additions
-
Research Progress on the Extractive Metallurgy of Titanium and Its Alloys Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-07-20 Yulai Song; Zhihe Dou; Ting-an Zhang; Yan Liu
Titanium ores are plentiful in the earth crust, and the corresponding metal content ranks as the fourth among structural metals; the application of titanium metal is restricted for its high cost in spite of its excellent mechanical properties, corrosion, and oxidation resistance. Titanium metal was first produced with Hunter process yet this has been practically replaced by Kroll process which contains
-
A review of Preg-robbing and the impact of chloride ions in the pressure oxidation of double refractory ores Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-07-20 Wei Sung NG; Qiankun WANG; Miao CHEN
As the mining industry moves toward the extraction of increasingly complex ores to meet global demands, one of the challenges in gold processing is the treatment of preg-robbing ores. Preg-robbing occurs when gold that can be otherwise recovered is lost through adsorption, reduction, or absorption by carbonaceous compounds or other clays and minerals in the ore. This review discusses the sources and
-
Precious Metals Recovery from Waste Printed Circuit Boards by Gravity Separation and Leaching Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-07-20 Esra Tanısalı; Mustafa Özer; Fırat Burat
ABSTRACT This study focuses on the recovery of valuable metals, such as gold, silver, and copper, from the printed circuit boards of waste computers, using physical separation followed by leaching methods. Characterization studies revealed that resins and glass fibers were attached as grain together with base and precious metals. A hammer mill was employed as a second stage crusher to disintegrate
-
The Effect of Energy Impacts on the Acid Leaching of Eudialyte Concentrate Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-07-15 V.A. Chanturiya; V.G. Minenko; A.L. Samusev; E.L. Chanturia; E.V. Koporulina; I.Zh., Bunin; M.V. Ryazantseva
Using a combination of energy – dispersive X-ray spectroscopy, X-ray diffraction, X-ray fluorescence, Infrared and X-ray photoelectron spectroscopies, the effect of acids (sulfuric, hydrochloric, and nitric) and energy impacts (electrochemical, mechanochemical, high power electromagnetic pulses, ultrasound) on the leaching parameters of eudialyte concentrate was studied. Zr and Σ REE recovery after
-
Influence Mechanisms of Additives on Coal-based Reduction of Complex Refractory Iron Ore Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-07-15 Peng Gao; Wentao Zhou; Yuexin Han; Yanjun Li; Chengwen Zhang
Additives play an important role in the recycling of complex refractory iron ore by coal-based reduction to improve the self-sufficiency rate of the ore. In this work, the influence mechanisms of CaF2, Na2CO3, and MgCO3 additives on the coal-based reduction of complex refractory iron ore were studied by x-ray diffraction, thermogravimetry and differential scanning calorimetry, scanning electron microscopy
-
A Novel Technology for the Recovery of Zinc from the Zinc Leaching Residue by the Bottom-blown Reduction Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-07-15 Zhongtang Zhang; Weifeng Li; Jing Zhan; Gui Li; Zhenbo Zhao; Jian-Yang Hwang
Zinc leaching residue is an important secondary sources of zinc. To realize recycling utilization of this zinc secondary resource, a novel technology is proposed for the recovery of zinc from the zinc leaching residue by the bottom-blown reduction process in this study. The effects of reduction temperature, reduction time, coal rate, and lime addition on the metal content in the slag and the volatilization
-
A Review on Environmental, Economic and Hydrometallurgical Processes of Recycling Spent Lithium-ion Batteries Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-07-13 E Asadi Dalini; Gh. Karimi; S. Zandevakili; M. Goodarzi
The suitable electrochemical performance of lithium-ion batteries (LIBs) led to an increase in demand and the use of LIBs in electrical and electronic equipment. Naturally, increased demand will be accompanied by an enhancement in the supply of metals from mineral resources. On the other hand, the lithium metal supply scenario will not be able to meet market demand over the next few years. Spent LIBs
-
Systematic Framework toward a Highly Reliable Approach in Metal Accounting Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-07-07 Yousef Ghorbani; Glen T. Nwaila
ABSTRACT Metal accounting is becoming an area of growing focus because of the requirement for the resulting data to feed directly into financial reports. It is vital in the fulfillment of best corporate governance practices and to provide assurance on metallurgical processes. The current metal accounting practices deliver a number of important measures, but an essential change in the approach toward
-
Effects of Ball Size Distribution and Mill Speed and Their Interactions on Ball Milling Using DEM Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-07-02 Mohammad AmanNejad; Kianoush Barani
A comprehensive investigation was conducted to delineate the effect of ball size distribution, mill speed, and their interactions on power draw, charge motion, and balls segregation in a laboratory-scale mill. The mill was simulated at different critical speeds with different mill fillings. In total, 165 scenarios were simulated. When the mills charge comprising 60% of small balls and 40% of big balls
-
Red Mud: Fundamentals and New Avenues for Utilization Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-06-24 M Archambo; S.K. Kawatra
Red mud is generated at a rate of up to 175.5 million tons per year. The global stockpile of red mud is near 4 billion tons. This material is hazardous with pH values from 11 to 13. Reduction of this waste is critical. Current industry practices for disposal of red mud involve different stockpiling techniques on valuable land area or disposing into critical bodies of water. This review studies processes
-
The Formation and Stabilization of Oily Collector Emulsions – A Critical Review Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-06-19 Liang Cao; Xumeng Chen; Yongjun Peng
Oily collectors are widely used to enhance the surface hydrophobicity of target minerals in flotation. However, the application of oily collectors is challenging in mineral flotation owning to their low adsorption on mineral surfaces. The presence of surfactants, fine particles and electrolytes in flotation has the potential to disperse oily collectors. In this paper, a thorough review of emulsions
-
An Investigation into the Effects of Grinding Media on Grinding Products Characteristics and Flotation Performance of Pyrite Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-06-16 Xiaolong Zhang; Yuexin Han; Peng Gao; Xiaotian Gu; Yanjun Li
During the grinding of pyrite, the grinding medium affects the properties of the grinding products, which in turn affects its flotation performance. In this study, we investigated the effects of cast iron ball (CIB) and ceramic ball (CB) grinding media on the grinding products characteristics and flotation performance of pyrite using atomic absorption spectrometry, scanning electron microscopy combined
-
Research Status of Spodumene Flotation: A Review Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-06-10 Ruiqi Xie; Yimin Zhu; Jie Liu; Yanjun Li; Xun Wang; Zhang Shumin
With the fast development and popularization of electronic equipment and new energy industry, the consumption and demands for lithium are on a rapid rise. Spodumene is one of the important lithium resources, so it is of great significance to concentrate it. Beneficiation methods of spodumene include magnetic separation, gravity separation, and flotation. Since the major gangue minerals of spodumene
-
Direct Leaching of Vanadium from Vanadium-bearing Steel Slag Using NaOH Solutions: A Case Study Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-05-13 Junfeng Wan; Hao Du; Feng Gao; Shaona Wang; Minglei Gao; Biao Liu; Yi Zhang
Vanadium-bearing steel slag is a typical solid waste in the steel industry and a valuable secondary resource for vanadium production. In this paper, a direct alkaline leaching process was proposed to extract valuable vanadium and achieve comprehensive utilization of the residue by incorporating the new process into the conventional Bayer alumina production process. The leaching mechanism showed the
-
A Review on Germanium Resources and its Extraction by Hydrometallurgical Method Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-05-05 Thi Hong Nguyen; Man Seung Lee
Resources of germanium and its extraction from the resources by hydrometallurgical methods were reviewed. Although Ge exists in some sulfide ores, by-products and residues from the processing of these ores and coal combustion are the primary resources for Ge recovery. Optical fiber and solar panel wastes can be considered as important secondary resources of Ge. Hydrometallurgical processes consisting
-
Influence of Coal Petrography on Microwave-assisted Carbothermic Reduction Roasting of Banded Hematite Jasper Ore Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-04-12 Subhnit K. Roy; Deepak Nayak; Nilima Dash; Swagat S. Rath
The study focuses on the use of microwave energy in the reduction roasting followed by magnetic separation studies of an Indian Banded Hematite Jasper (BHJ) ore assaying about 48% Fe. Two coals having different origins have been used as the reductants, and the effects of their petrographical characteristics on the microwave-assisted carbothermic reduction have been discussed. The impacts of various
-
Energy Optimization Studies for Integrated Steel Plant Employing Diverse Steel-Making Route: Models and Evolutionary Algorithms-Based Approach Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-04-05 Sagnik Chowdhury; Nirupam Chakraborti; Prodip Kumar Sen
Presently, blast furnace-basic oxygen furnace (BF-BOF) route is conventionally used in integrated steel plants (ISPs). As availability and cost of coking coal are becoming serious issues, alternative routes of iron and steel production such as COREX, shaft-based process for direct reduction of iron and electric arc furnace in combination with BF-BOF route is becoming a matter of focus. The possibility
-
Solvent Extraction of Ti(IV) from Hydrochloric Acid Leaching Solution of Ilmenite Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-03-17 Hyeong Hun Ahn; Man Seung Lee
A hydrochloric acid leaching solution of ilmenite contains Fe(III) and Ti(IV) and small amount of Mn(II) and Si(IV). Solvent extraction was employed to separate Ti(IV) and Fe(III) from the leaching solution. The co-extracted Ti(IV) was scrubbed from the loaded Alamine 300 by using a pure Fe(III) solution with 9 M HCl. Ti(IV) was then selectively extracted from the Fe(III) free raffinate by using PC88A
-
Experimental Approach to Matte–Slag Reactions in the Flash Smelting Process Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-03-09 Xingbang Wan; Leiting Shen; Ari Jokilaakso; Hürman Eriç; Pekka Taskinen
Improving metal–slag separation in pyrometallurgical processes is increasingly important. Due to the harsh conditions, direct observations of the molten phases behavior in the settler of the Outotec Flash Smelting Furnace (FSF) are not possible and the ways to improve metal settling can only be studied by simulation and modeling. This study focuses on kinetics and mechanisms of the chemical reactions
-
Effects of Grinding Media on Grinding Products and Flotation Performance of Sulfide Ores Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-02-23 Xiaolong Zhang; Yuexin Han; S. K. Kawatra
A smart selection of grinding media not only effectively reduces the grinding cost but also optimizes the flotation response of valuable sulfide minerals. This review highlights the influences of grinding media on pulp chemical properties (dissolved oxygen, pulp potential, pH, and ion concentration), particle size distribution, surface morphology and species, and crystal structure of grinding products
-
Modeling of the Complex Behavior through an Improved Response Surface Methodology Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-02-19 Freddy A. Lucay; Mauricio Sales-Cruz; Edelmira D. Gálvez; Luis A. Cisternas
Response surface methodology has been applied in numerous studies using polynomial models despite some of them exhibit poor correlation coefficient R2, which implies an incorrect optimization. In this work, a methodology for obtaining response surfaces when a small data set is available and its behavior is complex is presented. The methodology consists of four steps. First, the classic experimental
-
A Review on Hydrometallurgical Processes for the Recovery of Valuable Metals from Spent Catalysts and Life Cycle Analysis Perspective Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-02-18 Minh Nhan Le; Man Seung Lee
Recovery of valuable metals such as cobalt, molybdenum, nickel, and vanadium from spent catalysts has attracted much attention owing to the gradual depletion of high-grade ores. In this work, several hydrometallurgical methods have been reviewed for recovery of these metals from several spent catalysts. The main methods include adsorption, chelation, ion exchange, leaching, precipitation, and solvent
-
Utilization of Bauxite Residue: Recovering Iron Values Using the Iron Nugget Process Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2020-01-29 M. S. Archambo; S. K. Kawatra
Red mud waste from aluminum processing was utilized as a material for extraction of iron. Red mud contains a high amount of iron, comparable to feedstock to North American iron mines, and extracting this iron value is paramount. The iron nugget process can extract iron from the iron minerals in red mud. The nugget process is a one-step alternative to the blast furnace which simultaneously reduces and
-
Formation and Mechanism of Magnesium Titanate in the Process of Ilmenite Reduction Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2019-12-26 Chao Chen; Tichang Sun; Chao Geng; Jue Kou; Jianguo Liu
In this study, magnesium titanate was prepared through the high-temperature reaction of ilmenite and MgO in a reducing atmosphere, and its formation process and mechanism under different conditions were investigated. The results showed that a reducing atmosphere is necessary to prepare magnesium titanate. Although Mg could replace Fe and form magnesium titanate without reductant, the generated magnesium
-
Study on Flotability and Surface Oxidation of Sulfide Minerals from the Tailing of an Iron-Copper Mine Using Electron Probe Microanalyzer Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2019-12-25 Yahui Zhang; Zhidong Tang; John Shirokoff
With the depletion of high-grade ores, beneficiation of valuable minerals from mineral processing tailings attracts attentions of mining companies and researchers. Recovery of valuable sulfide minerals by flotation from the tailing of an iron-copper mine in central China was investigated in this paper. The surface oxidation status of sulfide minerals is an important factor influencing their flotation
-
Iron Extraction from Red Mud using Roasting with Sodium Salt Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2019-12-25 Ding Wei; Xiao Jun-Hui; Peng Yang; Shen Si-Yue; Chen Tao
Red mud is the main solid waste generated by the aluminum industry for the extraction of alumina. Considering the environmental problems associated with red mud, the recovery of iron from bauxite slag is still a promising field. The effect of sodium sulfate on the red mud separation roasting-magnetic separation process was studied. The results show that at the roasting temperature of 1100°C for 65
-
Production of Lithium –A Literature Review. Part 2. Extraction from Spodumene Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2019-12-18 Nasim Kh. Salakjani; Pritam Singh; Aleksandar N. Nikoloski
Spodumene is the main source of lithium among the lithium-containing minerals. A number of studies have been done on the extraction of lithium from naturally occurring α-spodumene as well as pre-treated β-spodumene and the effect of key factors that influence extraction and optimum processing conditions have been discussed. Some of these methods have remained at a laboratory scale because they were
-
Influence of Grinding and Classification Circuit on the Performance of Iron Ore Beneficiation – A Plant Scale Study Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2019-12-17 Seyed Hamzeh Amiri; Saeed Zare
Process flowsheet has a greater effect on equipment performance and operating conditions. For this purpose, performance of two iron ore beneficiation plants with the same equipment and feed characteristics but different arrangements in the grinding and classification circuit has been investigated. The first difference between the two plants was the screening type of HPGR product. Wet screening in the
-
Design and Analysis of Dewatering Circuits for a Chromite Processing Plant Tailing Slurry Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2019-12-16 Sunil Kumar Tripathy; Y. Rama Murthy; Saeed Farrokhpay; Lev O. Filippov
ABSTRACT The present investigation aimed to understand dewatering amenability of the tailing slurry generated during the beneficiation of chromite ore. The tailing includes mainly ultrafine particles with a concentration of Cr+6 which causes environmental and storage issues. Several dewatering techniques were investigated, including settling by using two different thickeners (high rate thickening and
-
Coal and Coke Based Reduction of Vanadium Titanomagenetite Concentrate by the Addition of Calcium Carbonate Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2019-12-11 Xiaohui Li; Jue Kou; Tichang Sun; Xiaoshaung Guo; Yuechao Tian
ABSTRACT Effects of different coals and coke on the direct reduction of vanadium titanomagnetite concentrate (VTC) added with calcium carbonate were investigated. Lignite was found to provide a better reduction effect than bituminous coal, coke or anthracite, mainly because the gasification reactivity of lignite was obviously better than that of other three reductants, and the metallization degree
-
A Multi-stage Process for Recovery of Neodymium (Nd) and Dysprosium (Dy) from Spent Hard Disc Drives (HDDs) Miner. Process. Extr. Metall. Rev. (IF 2.785) Pub Date : 2019-11-21 C. Erust; A. Akcil; A. Tuncuk; H. Deveci; E.Y. Yazici
ABSTRACT Waste electrical and electronic equipments (WEEE or e-waste) are an important source for rare earth elements (REEs). Among various type of WEEE, NdFeB magnets are known for their high content of neodymium (Nd) and dysprosium (Dy). Recovery of REEs from NdFeB magnets is of prime interest for the industry to meet the ever-growing demand for REEs. In this study, some physical and hydrometallurgical