某钨尾矿综合回收低品位萤石浮选试验研究

某钨尾矿有用矿物萤石嵌布粒度细,萤石含量低,单体解离难,石英、方解石等脉石矿物含量高,试验研究了该钨尾矿萤石和脉石矿物的浮选分离行为,通过条件试验,选择HY为萤石捕收剂,酸化水玻璃+HF为脉石矿物抑制剂,研究最终确定了一段一次粗选.七次精选工艺流程.结果表明:在钨尾矿含萤石8.12%的条件下,闭路试验获得了精矿CaF₂品位95.36%,回收率61.39%的选矿指标,实现了资源的综合回收. 

Flotation tests on comprehensive recycling of low grade fluorite from tungsten-tailing

Fluorite in a certain tungsten-tailing has the characteristics of fine dissemination size, low fluorite content and hard monomer dissociation with high content of gangue minerals, such as , quartz and calcite. Experiment is carried out to study the flotation separation of the fluorite and gangue minerals. Technological process of one roughing and seven concentrations is determined through condition experiment with HY as collectors and acidized water glass＋HF as depressants. The result shows that CaF 2 with concentrate grade of 95.36 % and recovery of 61.39 % is recovered from the tungsten-tailing with the fluorite grade of 8.12 %through the closed flotation test. Hence, the comprehensive recycling of resource is achieved.