刚果(金)某铜钴矿选矿工艺试验研究

Experimental Study on Mineral Processing Technology of a Copper Cobalt Mine in Democratic Republic of Congo

刚果(金)某铜钴多金属矿床铜钴储量大,具有极高的回收价值。针对该矿山资源,开展了选矿工艺研究,结果表明:原矿中铜和钴主要以硫化矿的形式存在,同时含有少量的氧化矿矿物。在磨矿细度为-0.106mm含量为80%时,铜和钴的回收率最高,磨矿细度控制在该条件下最有利于浮选。随着矿样氧化率的提升,铜和钴的回收率明显下降。当矿样氧化率超过15%时,铜和钴的回收率下降较明显。在生产中配矿至氧化矿含量为15%以内后再进行矿石选别作业较为适合。采用“先硫后氧+中矿再磨再选”的工艺流程,所配矿样的铜、钴回收率均较为理想,能够满足冶炼加工工艺要求。

A copper cobalt polymetallic deposit in the Democratic Republic of Congo has a large reserve of copper and cobalt,which has extremely high recovery value.A beneficiation process study was conducted on the mine resources,and the results showed that copper and cobalt in the raw ore mainly exist in the form of sulfide ore,while containing a small amount of oxidized mineral.When the grinding fineness is-0.106mm and the content is 80%,the recovery rate of copper and cobalt is the highest,and controlling the grinding fineness under this condition is most conducive to flotation.As the oxidation rate of the ore sample increases,the recovery rates of copper and cobalt significantly decrease.When the oxidation rate of the ore sample exceeds 15%,the recovery rate of copper and cobalt decreases significantly.It is more suitable to mix ore in production until the content of oxidized ore is within 15%before conducting ore sorting operations.The process flow of"sulfur first,oxygen+intermediate ore,grinding and then selection"is adopted,and the copper and cobalt recovery rates of the prepared ore samples are relatively ideal,which can meet the requirements of smelting and processing technology.