2022年4月1日· Hydrometallurgical process is an attractive alternative to treat HACSC This work dealt with the leaching behaviors and kinetics of copper and arsenic from HACSC by oxygenrich acid leaching at atmospheric pressure systematically2022年4月1日· Copper leaching kinetics in the leaching processes was investigated systematically High arsenic copper sulfide concentrates (HACSC) are becomingLeaching behaviors of copper and arsenic from high
2011年6月1日· This paper investigates a potential method for arsenic removal from copper concentrates using hypochlorite leaching The problems concerning pyrometallurgical2023年10月20日· In this study, batch tests were conducted on samples of arsenical copper sulphide concentrates, with varying concentrations of As, Sb and Bi, toEffect of Arsenic, Antimony, and Bismuth in Coprocessing of
2012年10月1日· The common copper–arsenic bearing minerals in copper ores, enargite (Cu 3 AsS 4) and tennantite (Cu 12 As 4 S 13), contain significant amounts of copper;2023年10月27日· This process partially oxidizes the concentrate, keeping the copper in a solid phase or calcine, while the arsenic passes to a gaseous phase as arsenic oxide,Selective Leaching of Arsenic from Copper Concentrates in
Simplification of copper recovery via solvent extraction and electrowinning and/or integration with a heap leach operation High Temperature Pressure Leaching of Arsenical Copper2018年5月17日· World copper (Cu) production has been strongly affected by arsenic (As) content, because Asrich Cu concentrates are not desirable in the metal foundriesFree FullText | Bioleaching of ArsenicBearing Copper Ores MDPI
2022年9月1日· Most of the published works that present experiences of leaching copper concentrates or smelting powders with high arsenic Nazari AM, Radzinski R,2007年1月1日· Selective alkalineoxidizing leaching of enargite in hypochlorite media can be used for arsenic removal from copper concentrates Leaching reaction describedA potential method for arsenic removal from copper
2009年1月31日· The obtained Cuconcentrate is sent to the pyrometallurgical process If grinding is not fine enough for efficient flotation, copper is lost in tailings In this paper, the ferric leaching of slag2021年1月2日· The leach solution contains approximately 36 percent ferric chloride and about 1 percent hydrochloric acid During leaching about 99 percent of the copper, 84 percent of the iron, 90 percent of the calcium,Ferric Chloride Leaching of Chalcopyrite Concentrate
2023年3月15日· It can be seen that leaching time has a significant effect on copper and cobalt leaching efficiency, and the leaching reaction of coppercobalt sulfide concentrate mainly occurs in the first 2 h The copper and cobalt extraction was proportional to the leaching duration, at 05 h, the recovery percentage of copper and cobalt is only 60818 October 25th, 2004 Drivers for Concentrate Leaching Cost effective alternative to conventional smelting & refining Capital cost versus greenfield smelter/refinery projects $1,0002,000 versus $3,0006,000/annual tonne Ability to utilize existing SX capacity ($300400/annual mt) Ability to utilize spare EW capacity ($500600/annual mt) Ability to utilizePressure Leaching of Copper Concentrates Metallurgium
2018年10月15日· 2FeCl2 + Cl2 → 2FeCl2 Ferric chloride leaching of galena was investigated by Christiansen in 1923, later by Agracheva and recently by Cottam, Baker, Milner , and Demarthe Moltensalt electrolysis of lead chloride was reported by Ashcroft in 1925 and later by Starliper An integrated process has never been developed for2020年12月23日· The leaching of the concentrate that contained 147% of copper and 50% of zinc for three leaching cycles (total duration, 575 h) allowed the obtainment of a leach residue containing 153 and 0A novel hydrometallurgical treatment for the recovery of copper
2004) and ferric sulfate leaching (Wan et al, 1984) of chalcopyrite (CuFeS 2) The objective of this research was to develop a simple, economically viable and environmentally friendly catalytic leaching process in ferric sulfate media under atmospheric conditions for arsenical copper concentrates and to2018年10月13日· Here molybdenum concentrates are slurried with hot ferric chloride leach solution to dissolve the copper and lead contaminants present The primary function of the filtration and thickening circuits is to recover spent ferric chloride leach solution from the leached moly concentrates Since approximately 25 percent of the ferric chloride inRemove Copper from Moly by Ferric Chloride Leaching 911
2022年8月1日· Despite this, processes based on application on leaching in ferric systems (including leaching with ferric sulfate and chloride, bioleaching) are still considered as a promising method for sulfide concentrate treatment due to their comparative cheapness and simplicity, wellknown processes of further copper extraction from pregnant2016年1月1日· The conventional treatment of copper concentrates by this method works well and recovers copper and precious metals as highvalue products The conventional treatment of copper–gold concentrates does have some compelling reasons to seek an alternative hydrometallurgical process for recovery of concentrate values These includeCase Study Flowsheets: Copper–Gold Concentrate Treatment
2019年7月11日· For example, in case of high arsenic concentrations in the concentrate roasting or leaching of concentrates prior to smelting can be conducted to reduce the As concentration [182][183] [184]2023年10月20日· 11 HighImpurity Copper Concentrates and Pressure Oxidation Copper concentratescontaining deleterious elements (eg Sb, As and Bi) are subject to significant penalties by smelters due to the issues and costs associated with handling these impurities One option for hydrometallurgical treatment of these highimpurity copperEffect of Arsenic, Antimony, and Bismuth in Coprocessing of Copper
2018年8月28日· Ferric Sulfate Leaching Acid ferric sulfate solution has been used for heap and dump leaching of lowgrade chalcopyrite ores and is being considered as a possible lixiviant for the hydrometallurgical2019年1月1日· Purchase this Article for $2500 The hydrometallurgical treatment of copper ores and concentrates continues to be an active field of innovation The direct extraction of copper from ores containing chalcopyrite is an important development to provide an alternative to flotationsmelting and refining Jetti Resources (with theNew Developments in Hydrometallurgical Copper Ore and Concentrate Leaching
2023年10月27日· A novel copper concentrate cleaning process by selective leaching is proposed, which transforms unacceptable copper concentrate for smelters (>05%As) into clean concentrates (<02%As) or low penalty concentrates (02 < %As < 05) The estimated consumption for the cleaning process is in the order of 04–06 kg Cl22021年3月1日· However, when catalytic leaching is performed after a previous ferric leaching, copper and zinc recoveries higher than 95% are achieved The leached concentrate (03% Cu, 08% Zn, 33% Pb, 1438 ppm Ag, Treatment of copper concentrates containing chalcopyrite and nonferrous sulphides by the BRISA processA novel hydrometallurgical treatment for the recovery of copper
Request PDF | On Aug 1, 2018, Maxim Muravyov and others published Treatment of copperzinc sulfide concentrate by leaching with biogenic ferric iron | Find, read and cite all the research you needand cobalt in which copper is recovered as high grade copper sulfide, copper sulfides were economically recovered in a hydrometallurgical process only during the leaching of waste dumps Need for Hydrometallurgical Processes Since most of the copper production in the world comes from the treatment of sulfide ores, hydrometallurgyLEACHING OF COPPER CONCENTRATES University of Arizona
Abstract A novel technology for leaching copper from primary copper concentrates has been developed at the University of British Columbia (UBC) This patented technology takes advantage of the galvanic couple between pyrite and chalcopyrite to ensure rapid and complete oxidation of chalcopyrite under mild conditions in acidic iron sulfate solution,A process for extraction of copper from an arsenical copper sulfide concentrate is provided The process includes atmospheric oxidative leaching of a feed slurry including the arsenical copper sulfide concentrate and an acidic iron sulfatecontaining leach solution, in the presence of oxygen, to produce a leach slurry including copper and arsenicProcess for extraction of copper from arsenical copper sulfide concentrate
The treatment of concentrate containing sulphide and oxidized copper minerals by roasting with additives followed by acid leaching technique is a high copper recovery (962%) and no SO 22018年8月19日· Sherritt has evaluated the hydrometallurgical recovery of copper from sulphide concentrates since the 1960s [1,2,3,4], including from arsenical copper concentrates [5, 6], as have other partiesDespite such efforts, pressure oxidative leaching of copper concentrates has so far not found a distinct area of application on a par withHydrometallurgical Processing of CopperArsenic Concentrates
BacTech Enviromet Corp, in conjunction with Mintek, 14 has developed proprietary technologies for the high temperature leaching of copper concentrates Working in conjunction with Industrias Penoles SA de CV,2017年12月1日· DOI: 101016/JHYDROMET201610011 Corpus ID: ; Review of arsenic metallurgy: Treatment of arsenical minerals and the immobilization of arsenic @article{Nazari2017ReviewOA, title={Review of arsenic metallurgy: Treatment of arsenical minerals and the immobilization of arsenic}, author={Amir Mohammad Nazari andReview of arsenic metallurgy: Treatment of arsenical minerals
2020年2月19日· Key features of the process were the use of superfine grinding of the concentrate (to a P98 of 12 to 15 μm and a P80 of 6 to 7 μm), pressure leaching at 160°C with 1,380 kPa (200 psig) oxygen2017年5月23日· Acid Leaching – Copper Ore Treatment Method The treatment of copper ores, both oxides and sulfides by means of flotation, hydrometallurgy or other processes has been well established for many years Flotation has been applied generally to the treatment of sulfide ores, both in small and large scale operationsAcid Leaching Copper Ore Treatment Method 911 Metallurgist
2021年1月28日· Alkaline leaching with highly selective ammoniacal complexing agents is an interesting alternative for the treatment of copper concentrates This treatment is beneficial for copper recovery because it allows the formation of soluble amines complexes, with cupric tetramine ( Cu(NH3)42+) being the most stable In order to suppress the unit2011年9月1日· Different process options for the bioleaching of nickel–copper containing sulphide concentrates were evaluated Tests in continuously operated reactor systems showed >98% nickel extractions over a range of temperatures, whereas for copper occurring as chalcopyrite, extractions of >95% could only be achieved at 70 °CDuringBioleaching strategies for the treatment of nickel–copper
1995年12月1日· Extraction of cobalt from complex ore flotation concentrates obtained from the Blackbird Mine Idaho USA is reviewed After flotation of a primary copper concentrate, a bulk concentrate is recovered containing major amounts of cobalt, arsenic, and iron, with minor amounts of copper and nickel This concentrate can be upgraded during flotationAbstract: Taguchi (L16) experimental design (DOE) was used to optimize the extraction process of copper from chalcopyrite concentrate statistically A series of experiments involving leaching of copper by ferric chloride in a hydrochloric acidic medium were conducted Process optimization of the experimental data was performed via statisticalOPTIMIZATION OF FERRIC CHLORIDE LEACHING PARAMETERS OF COPPER
1995年12月1日· Extraction of cobalt from complex ore flotation concentrates obtained from the Blackbird Mine Idaho USA is reviewed After flotation of a primary copper concentrate, a bulk concentrate is recovered containing major amounts of cobalt, arsenic, and iron, with minor amounts of copper and nickel This concentrate can be upgraded during flotationPaper – 184 NITRIC ACID LEACHING FOR PRETREATMENT OF A COPPER BEARING AUROFERROUS PYRITIC CONCENTRATE O Celep1,*, P Altinkaya1, EY Yazici1 and H Deveci1 1Hydromet B&PM Group, Department ofNITRIC ACID LEACHING FOR PRETREATMENT OF A COPPER
Abstract: Taguchi (L16) experimental design (DOE) was used to optimize the extraction process of copper from chalcopyrite concentrate statistically A series of experiments involving leaching of copper by ferric chloride in a hydrochloric acidic medium were conducted Process optimization of the experimental data was performed via statistical2023年10月27日· The selective leaching of arsenic using sodium hypochlorite was evaluated in order to reduce its concentration in a copper concentrate The best conditions achieved in the synthetic concentrate were applied to the industrial concentrate First, the individual behaviors of pure samples of enargite and chalcopyrite were evaluated under aSelective Leaching of Arsenic from Copper Concentrates in
2018年8月15日· This study is focused on the sphalerite dissolution with ferric sulphate, as the first stage of the treatment of CuZnPb concentrates The ferric ion concentration, the temperature and the particle size have an important role in the sphalerite oxidation However, the initial sulphuric acid, ferrous ion and sulphate ion concentrations have novidual enhancement: the ferric leaching by thermal activation and the use of catalysts, and the biooxidation using highefficiency bio reactors (Mazuelos et al, 2000; Mesa et al, 2004)Ferric leaching of copper slag flotation tailings ResearchGate
2018年2月8日· Also, treatment of arsenical ores and concentrates to process “ refractory ” gold bearing resource s has been practi ced for decades using multihearth roaste rsAbstract: The thiourea leaching of gold from the calcine of goldbearing arsenical pyrite concentrate of Kangjiawan mine was studied The effects of the leaching time，the concentrations of thiourea,hydrochloric acid and initial ferric ion on the leaching recovery of gold were investigated，and a regressive model has been established，which showedTHIOUREA LEACHING OF GOLD FROM A CALCINE OF GOLDBEARING ARSENICAL
2018年5月31日· The leaching of the concentrate that contained 147% of copper and 50% of zinc for three leaching cycles (total duration, 575 h) allowed the obtainment of a leach residue containing 153 and 02008年7月6日· In this research, the effect of mechanical activation, via ball milling, of copper sulfide concentrate on the efficiency and mechanism of copper leaching in an acidic ferric chloride solution was investigated Copper concentrate, containing chalcopyrite as the main constituent, was supplied from Sarcheshme mine, located in theCopper leaching from nanoparticles of chalcopyrite concentrate
