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    • 59. 发明授权
    • Process for extracting copper from sulfide ores
    • 从硫酸盐提取铜的方法
    • US3753691A
    • 1973-08-21
    • US3753691D
    • 1970-01-14
    • DORR OLIVER INC
    • GROVER KKNECHT GTULLY J
    • C22B15/00C22B15/08
    • C22B15/0063Y02P10/236
    • A process for extracting nonferrous metal values from ores by leaching said ores with an aqueous sulphuric acid solution produced by absorbing sulphur trioxide in barren leach liquor coming from hydrometallurgical operations. The process provides wet scrubbing a sulphur dioxide bearing gas, catalytically oxidizing at least a portion of the moisture laden scrubbed sulphur dioxide bearing gas to produce a gas stream containing controlled amounts of sulphur dioxide and sulphur trioxide, absorbing the sulphur trioxide values in barren leach liquor to produce aqueous sulphuric acid for leaching said ores and utilizing said sulphur dioxide values to reduce ferric sulphate to ferrous sulphate present in the pregnant solution resulting from said acidic leaching operation.
    • 一种从矿石中提取有色金属的方法,该方法是用硫酸水溶液浸出所述矿石,该硫酸溶液通过在湿法冶金操作的贫瘠浸出液中吸收三氧化硫而产生。 该方法提供了对二氧化硫负载气体进行湿式洗涤,催化氧化至少一部分含水分洗涤的二氧化硫气体,以产生含有受控量的二氧化硫和三氧化硫的气流,吸收贫瘠浸出液中的三氧化硫值 以产生用于浸出所述矿石的硫酸水溶液,并利用所述二氧化硫值将硫酸铁还原为存在于由所述酸性浸出操作产生的怀孕溶液中的硫酸亚铁。