A Technology for Processing Slags Resulting from Lead-zinc Smelters
Slag and by-products of metallurgy bear valuable components and their processing raises an increasing interest.Coke and iron have to be separated and other components have to be depressed,in order to obtain sellable high quality copper concentrates.Use of classical mineral processing technologies,such as magnetic separation,sulphidization,hydrometallurgy,etc.yields copper concentrates with grade of 4%～6% Cu.Copper is lost in tailings and the whole technological cycle is low profitable.Technology proposed applies an electrochemical treatment of the industrial water entering the flotation cycle.Iron and iron compounds that do not bear Cu,coke and gangue materials are depressed during the copper flotation.Copper concentrate of grade of 9.8%～10% Cu is obtained at simultaneous increase of Ag recovery by 8%～10%.As a result company profitableness is increased.Technology proposed is easy to implement,it does not require changes in the existing technology flow-sheet,and additional investment is low.The flotation process can be aided by a specially developed system for real-time analysis of the obtained copper concentrate which allows in-time corrections in the flotation parameters and entire process control.Applied flotation schemes,technological parameters and results obtained are described.
Slags Lead-zinc smelters Electrochemical treatment Flotation
V.Panayotov M.Panayotova N.Dobrev V.Nachkov R.Tsonev
University of Mining and Geology,Sofia,Bulgaria Nonferrous metals smelter 2001 JSC,Plovdiv,Bulgaria
国际会议
XXIV International Mineral Processing Congress(第24届国际矿物加工大会)
北京
英文
3959-3964
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）