辽宁某钼矿分粒级浮选试验研究  

Study on Classification Floatation of a Molybdenum Ore in Liaoning

作　　者：马龙秋[1] 张其东[1] 袁致涛[1] 李明明[1,2] 卢冀伟[1] 

机构地区：[1]东北大学资源与土木工程学院,辽宁沈阳110819 [2]黑龙江科技大学矿业工程学院,黑龙江哈尔滨150022

出　　处：《矿产综合利用》2016年第3期54-57,39,共5页Multipurpose Utilization of Mineral Resources

基　　金：国家自然科学基金青年基金资助项目(51104034);中央高校基本科研业务费专项资金资助项目(N130601003)

摘　　要：在钼矿选别过程中,由于水玻璃的大量使用,会导致尾矿沉降时间过长,回水无法正常利用。针对此问题,对辽宁某钼矿提出了粗细粒级分级浮选工艺,将磨矿后的物料分成+0.037 mm、-0.037 mm两个不同粒级的产品,然后各粒级分别进行浮选,最终通过试验得到品位为51.9%和47.3%,回收率为96.21%和92.66%钼精矿,浮选指标良好,同时水玻璃的用量从6 kg/t降到了2.4 kg/t,对尾矿进行沉降试验,结果表明:分级浮选后尾矿沉降得到明显改善,有利于回水的正常使用。Huge dosage of sodium silicate makes the tailing water unsinkable and recycled water can＇t be reused in molybdenum ore practice processing. For this problem, classification floatation is discussed in this paper. After crushing and grinding, explorative tests are carried out to determine the optimum classification size：＋0. 037ram and -0. 037ram. Then we carry out flotation tests receptively and the molybdenum grades of concentrate are 51.9% and 47.3% ,recoveries are 96. 21% and 92. 66%. Compared with two flotation results,we find that sodium silicate dosage with classification flotation is less than flotation without classification. Moreover, contrast tests on tailing sedimentation show that the problem of tailing difficult settlement is obviously improved with classification flotation.

关 键 词：辉钼矿 矿泥 水玻璃 分级浮选 分散 

分 类 号：TD923[矿业工程—选矿]