Development of a Cost- effective Technology of Valuables Recovery from Oxidised Lead Ore
Oxidised lead-bearing ores of one of the deposits of Russian Federation represent complex raw materials. Its main components are lead (3.2%～4.7%),silver (100～300 g/t) and zinc (0.7%～0.8%).The sample is characterized as oxidized ore. Silicium (37.4%) and iron (33.2%) are its main components and present in oxide form. Lead presents as cerussite, anglesite and plumbojarosite have a subject role. Zinc occurs as smithsonite. Certain part of zinc is associated with manganese minerals (psylomelane-pyrolusite). Close association of valuables with manganese-iron mineralization is observed. Silver is present in native finely dispersed form. Three options of flowsheets have been developed to recover valuables from the ore. 1. Hydrometallurgical flowsheet of lead and silver recovery on the basis of chloride leaching. 2. Flotation. 3. Flotation -flotation tailings cyanidafion.Hydrometallurgical flowsheet of ore processing on the basis of chloride leaching (option Ⅰ) al lows to achieve recovery into saleable products of 68.8% Pb and 70.2% Ag.High quality lead concentrate with 71.7% lead and 700 g/t silver was obtained during flotation (option 2).Flotation railings cyanidation (option 3) provides 24% silver additional recovery (from the ore).Technical and economical evaluation demonstrated that ore flotation (option 2) and flotation with subsequent flotation tailings cyanidation (option 3) are the most cost-efficient. Option Ⅱ is the most cost-efficient variant of Ⅰ tonne of ore processing (9.05 US dollars),
Oxidized lead ore, Zinc Silver Chloride leaching Cyanidation
V.Beskrovnaya O.Khmelnitskaya T.Chikina A.Byvaltsev
IRGIREDMET, Gagarina blvd., Irkutsk, 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
1746-1754
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）