【摘要】 赞比亚谦比西铜矿为一特大型铜矿 ,矿石中铜矿物属粗细不均匀嵌布 ,部分铜矿物嵌布粒度较细 ,矿物组成较简单。采用开路粗扫选—中矿再磨工艺处理该矿时 ,部分铜矿物以连生体或包裹体的形式损失在尾矿中。采用尾矿分级—粗粒中矿返回再磨的工艺 ,把含铜 1%的粗粒中矿返回再磨 ,铜回收率提高了近 5 %,减少了铜的损失。更多还原

【Abstract】 Chambishi Copper Mine is an oversize copper mine with a simple mineral composition.The designed flowsheet consists of open-circuit rougher and scavengers-middlings regrinding.The copper minerals in ore are uneven in dissemination size and some are fine.Using the designed flowsheet to treat the ore,some copper minerals lose mainly as poor copper intergrowths and entrapped intergrowths in flotation tailings.A new process flowsheet in which the tailings is classified and the coarse tailings is returned to regrinding is proposed in this paper.With the new process,some coarse tailings with Cu content of 1% are returned to regrinding,increasing copper recovery by about 5% and reducing copper loss.更多还原