提高永平铜矿铜精矿品位的探讨

APPROACH TO IMPROVING OF Cu CONCENTRATE GRADE IN YONGPING COPPER MINE

提高铜精矿品位是永平铜矿选矿面临的主要技术问题之一。本文通过试验和实践总结后认为:提高一段磨矿细度能有效提高铜的浮选指标;中矿再磨不仅可以避免铜矿物的过磨,而且能提高铜精矿品位和铜回收率,建议进一步对中矿再磨方案进行深入研究;采用石灰+CTP或石灰+水玻璃强化铜硫分离,比较明显地提高了铜精矿品位;此外,使用新型高效的铜选择性捕收剂是提高铜精矿品位的有效途径。

It′s a main problem to improve Cu concentrate grade in Yongping copper mineBased on flotation tests and practical experience in the mine,it is considered that finer primary grinding is necessary to achieve a higher Cu grade and recovery, and regrinding of cleaner tails and scavenger concentrates can avoid overgrinding of Cu mineralsHowever,research of middling regrinding is proposed furtherUse of both limeCTP and limesodium silicate reagent system for strengthening the separation of Cu from S results in remarkable improvement of Cu concentrate gradeIn addition,use of new selective collectors is found to be an effective way for improving Cu concentrate grade