云南某低品位碳酸盐型萤石矿浮选试验研究

由于碳酸盐脉石与萤石的可浮性相似,使用常规捕收剂来浮选分离碳酸盐型萤石矿的效果不理想,尤其是对于CaF_2含量20%左右的低品位碳酸盐型萤石矿。因此,开发高效的萤石矿浮选捕收剂及选矿工艺流程就显得尤为重要。云南某碳酸盐型低品位萤石矿CaF_2含量仅为22.38%,通过化学分析和扫描电镜分析查明,方解石含量高达56.46%,属于典型的低品位碳酸盐型萤石矿。根据矿石工艺矿物学分析结果,自主开发了高效碳酸盐型萤石捕收剂CYY-1,同时采用碳酸盐脉石抑制剂单宁酸,在磨矿细度-0.075mm占72.03%的条件下,通过一粗一扫五精浮选闭路试验流程很好的实现了萤石和方解石的分离,获得了萤石精矿CaF_2品位为96.59%、回收率为73.94%的良好指标。

Experimental Research on Flotation of a Carbonate-type Fluorite Ore From Yunnan

Through chemical analysis and SEM process mineralogy analysis, it is found that the CaF2 content of a certain carbonate fluorite ore in Yunnan is 22.38% and that of calcite is 56.46%, which is a low-grade fluorite. According to the ore properties, using high-efficiency fluorite collector CYY-1, gangue inhibitor Dannin, grinding fineness of -0.075 mm 72.03%, the separation of fluorite and calcite is well realized , and good beneficiation indexes can be obtained by the closed circuit test process that is one roughing, one scavenging and five refining: CaF2 grade is 96.59%, recovery rate is 73.94%.