Test results showed that use of ammoniacal solution pretreatment can effectively remove copper, and thus alleviating negative effect of copper on leaching of gold.

结果表明：采用含氨溶液预处理除铜，有效地排除了铜对氰化浸金的影响。

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A new process of producing electrolytic copper powder from anti-extracting bacterial leaching solution from copper ore of Ziji Mount Gold-Copper Mine was developed.

研究了直接利用紫金山金铜矿的铜矿细菌浸出反萃含铜溶液生产电解铜粉的新型工艺。

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Selective leaching of nickel, cobalt and copper from cobalt crusts was attained by using ammonium carbonate solution and sulfur dioxide gas as a reductant.

二氧化硫作还原剂，用碳酸铵溶液可实现从钴壳中选择性浸出镍、钴和铜。

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