某钼粗精矿浮选工艺优化研究  

Study on Optimization of Flotation Process on a Molybdenum Ore

作　　者：彭会清[1] 黄鑫 罗文[1] 邵辉[1] Pang Huiqing;Huang Xin;Luo Wen;Shao Hui(College of Resources and Environmental Engineering,Wuhan University of Technology,Wuhan 430070,China)

机构地区：[1]武汉理工大学资源与环境工程学院,湖北武汉430070

出　　处：《金属矿山》2019年第1期83-86,共4页Metal Mine

摘　　要：江西某钼矿选矿厂原工艺已不适应矿石性质的变化,导致磨矿—粗选—粗精矿再磨—1粗5精2扫闭路浮选流程仅获得钼品位为45.06%的钼精矿,再磨后的钼浮选作业回收率为90.31%、尾矿钼品位高达1.12%。造成生产指标不理想的原因主要是其他硫化矿物的抑制剂Na2S抑制效果不理想、钼矿物与其他矿物解离不充分。为解决生产中存在的问题进行了选矿试验。结果表明,在核心改造内容为ZA替代Na_2S、对再磨选精矿进行2次再磨选的情况下,采用再磨1(-0.038 mm占85%)—1粗3精4扫—再磨2(-0.038 mm占90%)—2次精选、中矿顺序返回流程处理试样,最终获得钼品位为53.57%、钼作业回收率为98.45%的钼精矿,尾矿钼品位降至0.175%,精矿钼品位和钼作业回收率分别提高了8.51个百分点和8.14个百分点,再磨选尾矿品位下降0.945个百分点,高效地实现了钼的回收。As the molybdenum recovery in the beneficiation plant of Jiangxi is out of expected,results to the grindingrough flotation-rough concentrate regrinding-1 roughing 5 cleaning 2 scavenging closed circuit flotation process only obtain the molybdenum concentrate with molybdenum grade of 45.06%,the recovery of molybdenum flotation after regrinding is90.31%,and the molybdenum grade of the tailing is as high as 1.12%. The main reason for the unsatisfactory production index is that the depression effect of Na2S is not satisfactory for other sulfide minerals,and the dissociation of molybdenum minerals from other minerals is insufficient. A beneficiation test was carried out to solve the problems in the plant. The results show that in the case of the core transformation content of ZA instead of Na2 S and twice regrinding of the regrinding concentrate,using the regrinding 1(-0.038 mm accounted for 85%)-1 roughing 3 cleaning 4 scavenging-regrinding 2(-0.038 mm accounted for 90%)-2 cleaning and middling sequence return to the process to treat the samples,the molybdenum concentrate with molybdenum grade of 53.57% and molybdenum recovery of 98.45%,and the tailings with molybdenum grade of0.175% were obtained. The molybdenum grade and molybdenum recovery of concentrate increased 8.51 and 8.14 percentage points,respectively. The molybdenum grade of the tailing decreased 0.945 percentage points,and the recovery of molybdenum was significantly improved.

关 键 词：抑制剂ZA 精矿再磨 工艺优化 

分 类 号：TD923.7[矿业工程—选矿]