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首页> 外文会议>International Congress on Mineral Processing and Extractive Metallurgy 11 - 13 September 2000 Melbourne, Victoria >The Use of Separate Unit Processes and Indirect Leaching for the Recovery of Copper from Chalcocite and Chalcopyrite
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The Use of Separate Unit Processes and Indirect Leaching for the Recovery of Copper from Chalcocite and Chalcopyrite

机译：使用单独的单元工艺和间接浸出从菱锰矿和黄铜矿中回收铜

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A technology involving separate unit processes for the generation and use of ferric ions for the oxidation of sulphidic minerals has been developed. The technology utilises a stand-alone automated bioreactor for ferric-ion generation (termed SAAB-FIG) and produces a low pH, ferric ion-rich leach liquor with a high oxidation potential. This leach liquor is then employed, in a separate unit process, to oxidise sulphidic minerals and regenerate ferrous iron that may subsequently be recycled to the bioreactor for the continual genration of ferric ions. The technique was successfully applied for the recovery of copper from chalcocite (Cu_2s) and chalcopyrite (CrFeS_2), as well as other ores and concentrates containing copper sulphide minerals. Coarse ore, ground ore and concentrates were treated with acidic solutions containing 8 to 12 (g/L) Fe(III) ions at a variety of temperatures.
机译：已经开发出一种技术，该技术涉及用于产生和使用三价铁离子以氧化硫化矿物的分离单元工艺。该技术利用独立的自动生物反应器生成三价铁离子（称为SAAB-FIG），并生产出具有高氧化潜力的低pH值，富铁离子浸出液。然后，在单独的单元过程中，将该浸出液用于氧化硫化矿物并再生亚铁，然后可将其再循环到生物反应器中，以连续生成三价铁离子。该技术已成功应用于从菱锰矿（Cu_2s）和黄铜矿（CrFeS_2）以及其他含硫化铜矿物的矿石和精矿中回收铜。在各种温度下，用含有8至12（g / L）Fe（III）离子的酸性溶液处理粗矿石，碎矿石和精矿。

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