陕西某难选钼矿石选矿试验  

Mineral Processing Tests of a Refractory Molybdenum Ore in Shaanxi

作　　者：刘慧南[1,2] 宋磊[1,2] 周少珍[1,2] 于洋[1,2] 胡志凯[1,2] 张行荣[1,2] 

机构地区：[1]北京矿冶研究总院,北京100160 [2]矿物加工科学与技术国家重点实验室,北京100160

出　　处：《金属矿山》2016年第10期92-96,共5页Metal Mine

摘　　要：陕西某难选钼矿石钼品位为0.099%,钼主要以辉钼矿形式存在。矿石辉钼矿嵌布粒度细,且与滑石等易浮层状硅酸盐矿物嵌布密切。为给该矿石开发利用提供依据,进行了三阶段磨矿—阶段浮选试验研究。结果表明:在一段磨矿细度为-0.074mm占70%、二段磨矿细度为-0.038 mm占84%、三段磨矿细度为-0.038 mm占95%条件下,以水玻璃+石灰+BK510为抑制剂、煤油+柴油为捕收剂、BK340为辅助捕收剂、2号油为起泡剂,进行浮选,获得了钼品位为47.56%、回收率为86.78%的钼精矿。试验结果可以为该矿石开发利用提供技术依据。There is 0. 099% Mo in a refractory molybdenum ore from Shaanxi,molybdenum mainly exists in form of molybdenite. Molybdenite was finely disseminated and closely disseminated with easily floating silicate minerals,talc,etc. To provide technique basis for the development and utilization of the ore,three stage grinding-stage flotation test was conducted. Results show that at first stage grinding fineness of 70% passing 0. 074 mm,second stage grinding fineness of 84% passing 0. 038 mm,third stage grinding fineness of 95% passing 0. 038 mm,using sodium silicate ＋ lime ＋ BK510 as depressor,kerosene＋ diesel as collector,BK340 as auxiliary collector,2#oil as frother,flotation process,molybdenum concentrate with molybdenum grade of 47. 56% and recovery of 86. 78% was obtained. The test results can provide technical basis for the development and utilization of the ore.

关 键 词：钼矿石 硅酸盐 阶段磨矿—阶段浮选 

分 类 号：TD923.7[矿业工程—选矿]