A Complex Technology of Pyrite Cinder Processing
The research on selecting of an efficient technology of pyrite cinders complex treatment,sulfuric acid production wastes,have been made.The grades in the initial product were 2.04 g Au/t,35.0 g Ag/t,0.38%Cu,1.1% Zn.Laboratory tests on cyanide technology,thiourea and sulphite leaching were carried out.Magnetic and flotation beneficiation and biohydrometallurgical technology were tested.After considering the results of the tests,the most economically efficient technology of pyrite cinders complex treatment with cyanide leaching of precious metals was determined.The technology involves water washing of soluble copper and zinc compounds,lime treatment and cyanide leaching of gold and silver,detoxification and utilization of mineral wastes.The precious metals are recovered from solutions by cementation onto zinc.Copper is recovered from rinse waters by SW/EW and then zinc is precipitated as hydroxide.All the solutions and organic agent are used in recirculation and therefore the technology is practically waste-free.Mineral wastes can be used as iron-containing materials for cement industry.The technology has been tested in pilot-plant scale under continuous operation with complete recirculation of cyanide solutions.In this process recovery of 54% Au,45% Ag,30% Cu and 50% Zn has been achieved.
Pyrite cinders Gold Silver Copper Zinc Water washing Extraction Cyanidation Cementation Recovery
O.D.Khmelnitskaya M.Yu.Komlev V.M.Mullov O.V.Lanchakova A.I.Anayko
IRGIREDMET,38,Gagarin blvd.,Irkutsk,Russia IRGIREDMET,38,Gagarin blvd.,lrkutsk,Russia
国际会议
XXIV International Mineral Processing Congress(第24届国际矿物加工大会)
北京
英文
3984-3991
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）