刚果(金)KAMA氧化铜钴矿选矿试验研究

摘要

刚果(金)KAMA氧化铜钴矿具有氧化率高、泥化严重、云母及滑石含量大等特点,采用单一浮选工艺难以获得较好的选矿指标.依据原矿性质,试验制定了先浮云母、滑石等可浮性好的脉石矿物,后浮易选氧化矿,最后采用磁选回收难浮的含铜钴矿物的原则流程,对含铜2.56％,钴0.31％的原矿,小型选矿试验获得品位铜32.20％、钴1.45％,回收率铜53.98％、钴20.75％的浮选精矿和品位铜8.89％、钴1.39％,回收率铜29.44％、钴38.07％的磁选精矿,铜总回收率83.42％,钴总回收率58.81％.%The Congo(Kinshasa) KAMA refractory copper-cobalt oxide ore is characterized by high oxidation rate,grave sliming and large content of mica and talc,which means it will be difficult to obtain a good processing index by single flotation process.According to properties of the raw ore,the test is designed by a principle flow in which gangue with good floatability such as mica and talc will be floated first,then the oxidized ore follows and the copper and cobalt manganese ore which is hard to float will be lastly handled by magnetic separation.By dealing with raw ore of 2.56％ Cu and 0.31％ Co,the small beneficiation test obtains a magnetic concentrator with a grade of 32.20％ Cu and 1.45％ Co,and a recovery rate of 53.98％ Cu and 20.75％ Co,along with a magnetic concentrator with a grade of 8.89％ Cu and 1.39％ Co,and a recovery rate of 29.44％ Cu and 38.07％ Co.And the total recovery rate of Cu is 83.42％,the Co being 58.81％.