我國南方某金礦，自1955年以來已堆存尾礦35萬t以上，其中金、銻、鎢的平均品位分別為4.2g/t、0.8%、0.18%，金屬儲量分別為1.473t、2517t、569t。根據(jù)老尾礦的性質(zhì)、長春黃金研究院經(jīng)過一系列的試驗研究表明，應采用浮選回收老尾礦中的銻和一部分金，對浮選尾礦進行氰化浸出再回收金。由于老尾礦中的銻大部分已氧化，浮選回收時，回收率并不高，剩余的銻對氰化浸出仍有影響。
At a gold mine in southern China, since 1955 has stockpiled tailings of more than 35 million T, which the average grade of gold, antimony, tungsten respectively 4.2g/t, 0.8%, 0.18%, metal reserves were 1.473t, 2517t, 569t. According to the nature of the old tailings, Changchun Gold Research Institute after a series of experimental studies show that the flotation recovery of antimony and gold in the old tailings, the flotation tailings of cyanide leaching of gold. As most of the antimony in the old tailings has been oxidized, the recovery rate is not high, and the remaining antimony is still affected by cyanide leaching. |
