湖南某中低品位胶磷矿正-反浮选扩大连续性试验研究OA

In order to solve the problems of difficult separation and low utilization rate caused by fine dissemination size,low grade of raw ore and high content of gangue minerals in a medium-low grade collophane ore in Hunan Pro-vince,the ore properties in this area were studied by chemical multi-element analysis and screening test,and the expanded continuity test was carried out by using self-made reagents CB-102 and QS.The results show that the P2O5 grade of the raw ore is 19.67％,and the mass fraction of MgO is 7.52％.Through the direct-reverse flotation process(direct flotation:one roughing-one cleaning-one scavenging,reverse flotation:one roughing-one cleaning-one scaven-ging),a phosphate concentrate with an average P2O5 grade of 30.30％and a recovery rate of 74.24％was finally obtained.The fluctuation of beneficiation technical indexes is small,and the efficient and stable recovery of useful minerals is realized,which can provide technical reference for the efficient development and utilization of similar collo-phane resources.