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用炭浆法从氰化物溶液中回收金,由于过程简单,费用低,使得人们在处理低品位的含金资源上作新的投资,尤其是对老矿的尾矿坝,正在重新调查考虑用此法处理。这种状况在津巴布韦尤为明显,该地已登记的金生产厂家有4000多家。附图1是一个典型尾矿坝断面图和处理时会碰到的有冶金价值的区域。大约在1950年以前,这些坝通常用“逆流法”(upstream)建造,尾矿是周围的跳汰机排出的筛下物。由于较粗颗粒迅速沉积形成了多孔性的较为坚硬的外层,它与向中心进水管迁移的矿泥相比,可
The recovery of gold from cyanide solutions by the carbon slurry method has led to new investments in the processing of low-grade gold-bearing resources due to its simplicity and low cost, and in particular, tailings dams for old mines are being re-examined to consider This method of processing. This is especially true in Zimbabwe, where more than 4,000 gold producers have been registered. Figure 1 shows the cross-section of a typical tailing dam and the metallurgical values encountered during processing. Around 1950, these dams were usually built using “upstream”, the tailings being the sieve discharged from the surrounding jig. Because coarser particles rapidly deposit to form a porous, harder outer layer, compared to slime that migrates to the center inlet