摘要:
豫西某金矿金品位为2.15 g/t,WO3 品位为0.115%,硫品位为3.31%.含硫高限制了浮选精矿金的富集比.选金采用浮选-中矿再选后氰化浸出的工艺流程,浮选精矿金品位32.10 g/t,回收率85.30%,与常规工艺相比,金品位提高2 g/t,且回收率没有降低.选金尾矿采用浮选工艺回收钨,粗选钨精矿WO3品位2.86%、回收率70.53%,为后续加温精选创造了条件.
关键词:
-
金矿
/
-
浮选
/
-
中矿再选
/
-
氰化浸出
/
-
白钨矿
/
-
综合回收
Abstract:
A gold ore from western Henan province contains 2.15 g/t Au, 0.115% WO3 and 3.31% S.The grade of the flotation concentrate was restricted by the high sulfur content in the raw ore.A process of flotation and middling reflotation in conjunction with cyanide leaching of the reflotation tailings was applied in this study.The Au grade of concentrate was 32.10 g/t with a recovery of 85.30%, which was increased by 2 g/t without decreasing gold recovery when compared with the conventional process.Then, the flotation of gold tailings was conducted to recover tungsten.The rough tungsten concentrate recovered 70.53% WO3 with a grade of 2.86%, which provided the conditions for subsequent heating concentrating.
下载: