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    • 4. 发明授权
    • Gold recovery from thiosulfate leaching
    • 从硫代硫酸盐浸出中回收黄金
    • US06632264B2
    • 2003-10-14
    • US09837756
    • 2001-04-17
    • Hongguang ZhangDavid Dreisinger
    • Hongguang ZhangDavid Dreisinger
    • C22B324
    • C22B11/04C22B3/24C22B3/42Y02P10/234
    • Processes for recovering gold from copper-gold ores thiosulfate leaching or gold ores copper catalyzed thiosulfate leaching using ion exchange technology are disclosed. The processes include subjecting the gold-bearing and copper-bearing thiosulfate solution to a pH and/or temperature adjustment to reduce tetrathionate concentration in the thiosulfate solution prior to contacting with an ion exchange resin. The ion exchange resin once loaded with gold and optionally copper is eluted with a mixture of sodium tetrathionate, ammonium thiosulfate and sodium sulfite. Gold and optionally copper are recovered from the eluate by electrowinning or precipitation.
    • 公开了使用离子交换技术从铜金矿硫代硫酸盐浸出或金矿铜催化的硫代硫酸盐浸出中回收金的方法。 所述方法包括使含金硫酸铜和含铜硫代硫酸盐溶液经受pH和/或温度调节,以在与离子交换树脂接触之前降低硫代硫酸盐溶液中的硫酸根浓度。 一旦负载金和任选的铜的离子交换树脂用四硫酸钠,硫代硫酸铵和亚硫酸钠的混合物洗脱。 金和任选的铜通过电解沉淀或沉淀从洗脱液中回收