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甘肃某金矿混汞尾矿进行了提金工艺研究，确定了焙烧氧化氰化法提金工艺流程，试验表明，该尾矿中金的回收率能达90％以上。
Ginkgo gold mixed tailings were studied by gold extraction process, and the process of gold extraction by roasting and cyanidation was confirmed. The experimental results show that the recovery rate of gold in the tailings can reach over 90%.