艾砂磨机在锂云母浮选分离的应用

艾砂磨机流程简单、占地面积小、基建投资少、操作方便、维修简捷。江西宜春某锂云母选别原料为钽铌矿尾渣，该锂云母矿石大多属于细粒嵌布型，通常与石英、长石等脉石矿物连生或共生且易产生泥化影响后续浮选，为此开展了以新型细磨设备艾砂磨机代替球磨机进行锂云母磨矿来提升选别指标的浮选试验。研究结果表明，采用艾砂磨作为开路磨矿设备，磨至磨矿产品粒径≤0.074 mm占60%，简单、高效实现了锂云母浮选矿物颗粒解离度要求，实验室采用CY205作捕收剂，WST作抑制剂，采用“一粗三精三扫”的选别工艺流程，可以获得含Li2O品位为5.15%、回收率为77.80%的锂云母精矿产品。研究结果对艾砂磨机在锂云母选厂中的实际应用具有一定的推广借鉴意义。 

Application of Isa mill to lepidolite flotation separation

The Isa mill has simple process,covering a small area,with less capital investment,convenient operation and easy to maintenance.The raw material for a lepidolite beneficiation in Yichun,Jiangxi Province,is tantalum niobium tailings.Most of the lepidolite ores belongs to fine-grained embedded type,which is usually associated or coexisted with gangue minerals such as quartz and feldspar and easy to produce sliming,which will affect the subsequent flotation.To this end,a new type of fine grinding equipment,Isa mill,instead of ball mill was carried out to improve the flotation index of lepidolite.The results show that Isa mill is used as the open-circuit grin equipment,the fineness of the product is less than or equal to≤0.074 mm,accounting for 60%,which simply and efficiently meets the requirements of the dissociation degree of lepidolite flotation mineral particles.Using CY205 as collector,WST as inhibitor and adopting the separation process of“one roughing,three cleaning and three scavenging”,lepidolite concentrate product with Li2O grade of 5.15%and recovery rate of 77.80%can be obtained in the laboratory.The results would have a certain promotion and reference significance for the practical application of Isa mill in dressing plant.