赣州某萤石尾矿浮选柱分选实验研究

这是一篇矿物加工工程领域的论文。云锡集团卡房分公司新探获矿体除有价元素铜、钨以外，仍有价值不容小视的萤石资源。铜钨浮选尾矿中CaF₂品位高达31.98%，萤石矿物整体属粗中粒嵌布，单体解离度在95%以上，脉石矿物以钙铁辉石、石英、长石为主。选矿小型实验首先采用强磁选预选脱除了钙铁辉石等磁性脉石矿物，减少了对萤石浮选的干扰，然后采用“一粗两扫六精”的浮选工艺，选择酸化水玻璃做调整剂，选择油酸钠做捕收剂，对中矿产率较大的精选1中矿返回至扫选1作业，最终获得了CaF₂品位为96.27%、回收率为88.85%的萤石精矿产品，实现了卡房矿区萤石资源的高效综合利用。

Experimental study on flotation column separation of a fluorite tailings in Ganzhou

This is an essay in the field of mineral processing engineering. In addition to the valuable elements copper and tungsten, there are still valuable fluorite resources in the newly discovered ore bodies of Kafang Branch of Yunnan Tin Group. The grade of fluorite in copper and tungsten flotation tailings is as high as 31.98%, the fluorite is coarse medium grain embedded, and the liberation degree is more than 95%. Besides quartz and feldspar, the gangue minerals are mainly hedenbergite with weak magnetism. During beneficiation tests, magnetic separation has been first conducted to remove the hedenbergite into magnetic gangue minerals, which reduces the interference on fluorite flotation process. Then flotation tests have been conducted using “one roughing- two scavenging- six cleaning” process, during which acidified sodium silicate as collector, sodium oleate as collector and return the middlings to scavenging 1, and a fluorite concentrate assaying 96.27% CaF₂ with operation recovery of 88.85% has been obtained, which realized the efficient and comprehensive utilization of fluorite resources in Kafang mining area.