摘要
福建某银铜多金属矿石由于铜品位较低,现场采用单一浮银工艺获得银精矿,金、铜仅作为伴生元素回收。由于铜在氰化浸金、银过程中的消极作用较大,因此铜的计价系数仅为0.1,且金、银的计价系数也受到影响。为提高矿山和湿法冶金企业的经济效益,为工艺完善与改造提供依据,对该矿石进行了部分优先快速浮铜—金银混合浮选研究。结果表明:在现场磨矿细度下,采用1粗2精快速选铜、1粗1扫2精选银工艺处理该矿石,取得的铜精矿铜、金、银品位分别为22.03%、32.21 g/t、2 360.00 g/t,回收率分别为46.51%、32.21%、12.54%,银精矿铜、金、银品位分别为1.49%、4.12 g/t、1 236.00 g/t,回收率分别为40.23%、52.69%、84.01%,金、银、铜的经济价值均得到显著提高。
Due to low copper grade in a silver-copper polymetallic ore in Fujian, a single silver floatation process was used to produce silver concentrate while obtaining gold and copper as associated elements. However, the pricing rate of cop- per is only 0. 1, since copper has great detrimental effects on cyanide leaching process of gold and silver, which also influ- ence the pricing rate for gold and silver. Hence, the process consisting of partial copper priority speed flotation in combina- tion with gold-silver bulk flotation process was conducted in order to improve the economic benefits for mine and metallurgy plants and provide basis for the further technology improvement and process transformation. The results showed that the eco- nomic values of gold, silver and copper were significantly increased by adopting the process flow-sheet of the copper speed flotation of one roughing and two cleaning and the silver flotation of one roughing, one scavenging, and two cleaning, under the mesh grinding of on-site. Copper concentrate with Cu,Au and Ag grade of 22.03% ,32. 21 g/t,and 2 360. 00 g/t and recovery of 46. 51% ,32. 21% , and 12. 54% , were obtained respectively. Meanwhile, silver concentrate with Cu, Au and Ag grade of 1.49% ,4. 12 g/t, and 1 236.00 g/t, and the recovery of 40. 23% ,52. 69% , and 84.01% respectively were a- chieved respectively.
出处
《金属矿山》
CAS
北大核心
2013年第11期69-73,共5页
Metal Mine
关键词
银铜多金属矿石
计价系数
快速浮铜
工艺优化
Silver-copper polymetallic ore,Pricing coefficient,Copper speed floatation,Technology optimization
