俄罗斯某富砷锑矿石浮选试验

俄罗斯某富砷锑矿锑品位为8.78%、砷含量为1.40%。锑主要以辉锑矿的形式存在,砷主要以毒砂的形式存在,毒砂嵌布粒度微细,少量辉锑矿存在于毒砂裂缝中,增加了辉锑矿分选的难度。为给该矿石选矿工艺提供依据,对其进行了浮选流程试验。结果表明:在磨矿细度为-0.074 mm占75%条件下,以硝酸铅为锑活化剂、腐植酸钠为砷抑制剂、丁黄药为捕收剂,经1粗3精1扫闭路流程浮选,得到的锑精矿锑品位为59.22%、回收率为84.58%、砷含量为0.73%。试验结果可以为该矿石选矿工艺流程的确定提供依据。

Flotation Study on a Arsenic-bearing Antimony Ore from Russian

There is 8.78% antimony and 1.40% arsenic in a arsenic-bearing antimony ore from Russian.Antimony mainly exists in form of the stibnite，and arsenic mainly in form of arsenopyrite.Arsenopyrite are fine disseminated，a small amount of stibnite exists in arsenopyrite cracks，making it difficult to have stibnite efficient separation.In order to provide technical basis for beneficiation of the ore，flotation experiments was conducted on the ore.Results indicated that:with the grinding fineness of 75% -0.074 mm，using lead nitrate as antimony activator，humic sodium as arsenic inhibitor，butyl xanthate as collector，via one roughing-three cleaning-one scavenging closed circuit process，antimony concentrate with 59.22% antimony，0.73% arsenic，and antimony recovery of 84.58% is obtained.The test results provide technique basis for the concentration process determination of the ore.