西北某复杂铜铅锌银多金属矿选矿工艺研究

摘要

According to the characteristics of a Cu-Pb-Zn-Ag polymetallic sulfide ore from Northwest China, such as the close paragenetic relationship of minerals and the fine dissemination of copper, lead and zinc minerals, reagents with better selectivity, such as copper collector, YK1 -11, and galena depressant, YK3 -09, were chosen, a Cu-Pb-Zn selective flotation flowsheet was adopted and the Cu/Pb/Zn separation was effectively actualized. A copper concentrate with a copper grade of 17. 12% and a silver content of 4753 g/t can be obtained, while the recovery of copper and silver reached 61. 16% and 83.99% , respectively. Meanwhile, a lead-zinc bulk concentrate containing 25. 19% of lead and 28.5% of zinc can be prepared with recovery of lead and zinc reaching 43. 11% and 33. 1% , respectively. Then, a lead concentrate with a lead grade and recovery of 48. 11% and 27% , respectively, and a zinc concentrate with a zinc grade and recovery of 43.26% and 43.27% , respectively, can be reclaimed. This study provides a new approach for the exploitation and utilization of Cu-Pb-Zn ore resources.%针对西北某铜铅锌银多金属硫化矿共生关系密切,且铜铅锌矿物嵌布粒度极细的特点,使用选择性较强的铜捕收剂YK1-11和方铅矿抑制剂YK3-09等浮选药剂,采用优先浮选工艺流程,成功实现了铜铅锌的分选,获得铜精矿含铜17.12％、含银4753g/t、铜回收率61.16％、银总回收率83.99％,铅锌混合精矿含铅25.19％、含锌28.5％、铅回收率43.11％、锌回收率33.1％,铅精矿含铅48.11％、铅回收率27％,锌精矿含锌43.26％、锌回收率43.27％的指标.为类似复杂铜铅锌多金属矿的开发与利用提供了新的思路.