贵州榕江县某锑矿石选矿试验研究

Experimental Research on Mineral Processing of an Antimony Sulphide Ore in Rongjiang of Guizhou

贵州榕江县干河沟硫化锑矿中矿物类型较为单一,以锑为主要回收对象,矿石中的锑主要以锑硫化物辉锑矿形式存在,占总物相的77.82%,另外还有少量的锑氧化物(14.9%)和锑酸盐(7.28%)形式存在。针对该硫化锑矿矿石的特性,进行了详细的条件试验,确定磨矿细度为-0.074 mm 88.13%时,采用"一粗一精"浮选工艺流程,获得锑精矿品位45.02%、锑回收率87.16%,有害元素铅含量0.023%,砷含量0.05%,选矿效果良好,质量达到硫化锑粉精矿二级品的标准。研究结果表明该锑矿石可选性良好,推荐工艺流程简单,得到的锑精矿质量较好,回收率较高,有害杂质含量低,选矿成本较低,具有较高的经济价值。

The mineral type of Ganhegou antimony sulfide ore in Rongjiang county of Guizhou province is single,of which the main recovery object is antimony,which mainly exists in the form of antimony sulfide stibnite,accounting for 77. 82% of the total phase. In an addition,small amount of antimony oxide（ 14. 9%） and Antimonates（ 7. 28%）also exists. According to the characteristics of the antimony sulfide ore,through the detailed condition test,when the grinding fineness is- 0. 074 mm 88. 13% and the process of one roughing one cleaning was adopted,the antimony concentrate with the grade of 45. 02% and the recovery of 87. 16% was obtained. The harmful elements of lead and arsenic are 0. 023% and 0. 05% respectively. The beneficiation effect is good,which reaches the second gradestandard of antimony concentrate powder. The results show that the antimony ore has good beneficiability,the recommended process is simple,the quality of the antimony concentrate is good,the recovery rate is high,the content of harmful impurities is low,the mineral processing cost is low,and it has high economic value.