摘要
陕西某低品位铜钼矿含铜0.32%、含钼0.048%,矿石中矿物组成复杂,嵌布粒度细,铜、钼矿物主要以硫化矿形式存在。试验根据其矿石性质,采用“铜钼混浮—铜钼分离”的工艺流程,其中铜钼混浮以石灰为调整剂,以自行复配药剂L03作为捕收剂,经“一粗三精二扫”的混浮流程得到铜钼混合精矿;混合精矿再磨,添加硫化钠抑制铜矿物,以水玻璃作为矿泥分散剂并抑制硅酸盐类脉石矿物,以煤油作为捕收剂,采用“一粗五精三扫”进行铜钼分离。最终的闭路浮选试验流程得到了铜品位18.82%,铜回收率85.35%的铜精矿和钼品位47.14%、钼回收率79.24%的钼精矿,选别效果较为理想。
The copper grade the low-grade copper-molybdenum ore in Shaanxi is 0.32%and the molybdenum grade is 0.048%.The copper and molybdenum minerals mainly exist in the form of sulfide ore.The properties are complex that there are many kinds of minerals in the ore,which are closely distributed and fine dissemination size.According to the properties of the ore,the technological process of bulk flotation and separation of copper and molybdenum was adopted in the experiment.With lime as regulator and reagent L03 as collector,the mixed concentrate of copper and molybdenum was obtained by the bulk flotation which flow-sheet is one roughing,three refining and two scavenging process.Then regrinding the mixed concentrate,use sodium sulfide as inhibitor of copper minerals,sodium silicate as slurry dispersant and inhibitor of silicate gangue minerals,kerosene as collector,can separate copper and molybdenum with the flow-sheet which one roughing,five refining and three scavenging.The copper concentrate with copper grade of 18.82%and copper recovery rate of 85.35%and molybdenum concentrate with molybdenum grade of 47.14%and molybdenum recovery rate of 79.24%were obtained by the final closed-circuit flotation test process,the indicator is nearly ideal.
作者
陈磊
马亮
CHEN Lei;MA Liang(Xi'an Engineering Investigation&Design Research Institute of China National Nonferrous Metals Industry CO.,Ltd.,Xi'an 710054,Shaanxi,China)
出处
《铜业工程》
CAS
2021年第4期47-51,共5页
Copper Engineering
关键词
低品位
铜钼矿
混浮
再磨
铜钼分离
low grade
copper-molybdenum ore
bulk flotation
regrinding
separation of copper and molybdenum
