重庆彭水某难选重晶石-萤石矿选矿技术研究

Research on Dressing Technology for a Refractory Barite-fluorite ore in Pengshui Chongqing

重庆彭水某重晶石-萤石共伴生矿矿石品位低,嵌布粒度细,泥化严重,萤石-重晶石-方解石三种矿物的微细脉相互穿插,可浮性相近,常规药剂浮选很难获得高品位的萤石和重晶石精矿。针对这一技术难题,通过合成高效浮选药剂,采用"混合浮选脱泥-正浮选萤石-反浮选重晶石"工艺。萤石经一次粗选四次精选,重晶石经一次粗选两次精选,获得合格的萤石和重晶石产品该技术为重庆彭水重晶石-萤石矿的开发利用提供技术支撑。

A barite and fluorite intergrowth mineral ore in Pengshui Chongqing has the characteristics of low grade,fine embedded granularity,serious sliming,fine vein fluorite and barite and calcite three minerals interpenetration with the much same flotablity. It is difficult for the conventional flotation agent to obtain high grade fluorite and barite ore. Selected for this problem,through the synthesis of high efficiency flotation reagents,the process of mixed flotation for desliming-positive flotation for fluorite,reverse flotation for barite was adopted. to achieve efficient mixing flotation and Hotaru heavy separation. After one roughing four cleaning for fluorite,one roughing two cleaning for barite,thequalified fluorite and barite products were obtained,which provides technological reference for this kinds of ores