湖南某钼铋硫化矿浮选工艺优化试验研究  

Experimental Study on Flotation Process Optimization of a Molybdenum-Bismuth Sulfide Ore in Hunan

作　　者：柴旭建 李锡康 林上勇 CHAI Xujian;LI Xikang;LIN Shangyong(School of Minerals Processing and Bioengineering,Central South University,Changsha 410083,China;Key Laboratory of Hunan Province for Clean and Efficient Utilization of Strategic Calcium-containing Mineral Resources,Central South University,Changsha 410083,China;Wuhan University of Science and Technology,State Environmental Protection Key Laboratory of Mineral Metallurgical Resources Utilization and Pollution Control,Wuhan 430081,China;Zhongyuan Critical Metals Laboratory,Zhengzhou 450001,China)

机构地区：[1]中南大学资源加工与生物工程学院,长沙410083 [2]中南大学战略含钙矿物资源清洁高效利用湖南省重点实验室,长沙410083 [3]武汉科技大学国家环境保护矿冶资源利用与污染控制重点实验室,武汉430081 [4]中原关键金属实验室,郑州450001

出　　处：《有色金属（选矿部分）》2024年第11期33-43,共11页Nonferrous Metals（Mineral Processing Section）

基　　金：国家重点研发计划项目(2022YFC2904504-4);国家自然科学基金资助项目(52404309)。

摘　　要：湖南省某钼铋硫化矿含钼0.05%、铋0.1%,传统浮选工艺流程为钼铋硫全浮—钼与铋硫分离—铋硫分离,存在钼、铋金属回收率较低且药剂制度复杂、药剂用量较大、生产成本较高等问题。为强化钼铋分离,引入次氯酸钙代替硫化钠作为铋抑制剂,对该钼铋硫化矿的浮选工艺进行了优化。新的浮选工艺为钼铋混浮—钼铋分离—硫浮选,可获得钼品位为42.02%、钼回收率为81.45%的钼精矿和铋品位为42.23%、铋回收率为76.38%的铋精矿。相比于传统浮选工艺,新工艺将钼精矿的品位和回收率分别提高了1.63和2.35个百分点,铋精矿的品位和回收率分别提高了11.98和9.21个百分点,同时降低了选矿废水的pH、COD、固体悬浮物以及部分重金属离子的含量,具有较好的工业价值和广阔的应用前景。A molybdenum-bismuth sulfide ore in Hunan Province contains 0.05%molybdenum and 0.1%bismuth.And the traditional flotation process,i.e.,full flotation of molybdenum-bismuth-sulfurseparation of molybdenum from bismuth-sulfur-separation of bismuth-sulfur,exists with low recovery of molybdenum and bismuth,complicated pharmaceutical system,larger dosage of pharmaceuticals,and higher production cost.In order to strengthen the separation of molybdenum and bismuth,calcium hypochlorite was introduced to replace sodium sulfide as bismuth depressant,and the flotation process of this molybdenum-bismuth sulfide ore was optimized.The new flotation process is molybdenum-bismuth mixed flotation-molybdenum-bismuth separation-sulfur flotation,which can obtain a molybdenum concentrate with molybdenum grade of 42.02%and molybdenum recovery of 81.45%and a bismuth concentrate with bismuth grade of 42.23%and bismuth recovery of 76.38%.Compared with the traditional flotation process,the new process increased the grade and recovery of molybdenum concentrate by 1.63and 2.35percentage points,and that of bismuth concentrate by 11.98and 9.21percentage points,and at the same time reduced the content of pH,COD,suspended solids,and some heavy metal ions in the beneficiation wastewater,which is of good industrial value and broad application prospect.

关 键 词：钼铋硫化矿 选择性分离 次氯酸钙 清洁生产 

分 类 号：TD952[矿业工程—选矿]