摘要
某难选金矿矿石中伴生有铜、铁等有价元素,为了充分利用矿产资源,对该矿石进行了选矿综合回收试验研究。其结果表明:通过采用活化剂AS-2活化浮选铜、浮选尾矿细磨预处理—氰化浸金工艺,可获得铜品位14.32%、回收率58.64%的铜精矿,金总回收率达到83.12%;氰化尾矿采用磁选回收磁铁矿并浮选脱硫,可得到铁品位62%以上的磁铁矿精粉和硫品位28%以上的硫铁矿精粉。该工艺流程有效地回收了矿石中的有价金属元素。
The experimental research on comprehensive recovery of gold, copper and ferrum from a refractory gold ore is performed to make full use of resources. Experimental results show that the copper concentrate with the recovery of 58.64 % and the grade of 14.32 % can be produced when reagent AS - 2 was used as activators ; in this circum- stance, flotation railings were further processed by using fine grinding pretreatment - cyanidation process, total gold re- covery rate reached 83.12 % ; Magnetic separation was used to recover magnetite from cyanide tailings, and flotation was used for removing pyrrhotite from magnetite. Fe grade of magnetite concentrates was above 62 % and S grade of pyrrhotite concentrates was above 28 %, respectively. Thus, the valuable metallic elements of refractory gold ore are ef-fectively recycled.
出处
《黄金》
CAS
2015年第10期58-61,共4页
Gold
关键词
难选金矿
铜
铁
综合回收
refractory gold ore
copper
ferrum
comprehensive recovery
