云南某微细粒辉钼矿工艺矿物学与浮选回收技术研究

A study on process mineralogy and flotation recovery technology of a kind of fine molybdenite ore in Yunnan Province, China

针对云南某单一的低品位硫化钼矿,辉钼矿嵌布粒度粗细极不均匀,微细粒含量高的特点,进行了工艺矿物学与浮选回收技术研究。采用原矿粗磨-钼粗精矿再磨的阶段磨浮选矿回收工艺,以水玻璃和硫化钠做脉石矿物的抑制剂,以煤油和2#油分别作辉钼矿的捕收剂和起泡剂,对原矿Mo品位0.22%,全流程浮选闭路试验获得了钼精矿含Mo 50.12%,回收率92.73%的浮选指标,浮选回收工艺流程合理、药剂制度简单环保。

According to the characteristics of a low-grade molybdenum sulfide ore, in which molybdenite is characterized with extremely uneven grain sizes and high content of fine particles, from a deposit in Yunnan Province, the process mineralogy and recovery technology of the ore have been conducted in this paper. The stage grinding flotation beneficiation and recovery process including separation techniques of coarse grinding of ROM and regrinding of Mo rough concentrate was adopted to process raw ores by using water glass and sodium sulfide as inhibitors of gangue minerals, kerosene as collector and pine oil as frother of molybdenum. The ROM with assayed Mo grade of 0.22% was processed by using the flotation locked cycle test, and then the concentrate with assayed Mo grade of 50.12% at the recovery of 92.73% has been obtained. This floatation recovery process is reasonable with the simple and environmental protection reagent system.