摘要
旋流器分级效率较低,金及金属矿物比重高,易在旋流器底流富集,造成已单体解离的目的矿物在磨矿回路中循环和过粉碎,是影响微细粒易泥化难选金矿浮选回收率难以有效提升的主要因素。为了提高该金矿的选矿回收率,开展了磨矿工艺考查和旋流器底流闪速浮选试验。考查了旋流器底流粒度组成、各粒级主要元素富集和单体解离度等情况,确定了旋流器底流闪速浮选工艺条件和药剂制度。在一段旋流器底流增加闪速浮选,可获得金品位为23.64g/t、金回收率为44.36%的金精矿。试验证明,闪速浮选能够降低金在磨矿回路中的循环,有利于提高金的回收率。
In view of low grading efficiency of the hydrohydrocyclone, high specific gravity of gold and metallic minerals in hydrohydrocyclone underflow, it's easy to beneficiation in the underflow of a hydrohydrocyclone, and cause the target minerals that is already monomer separation to circulate and over crushing in the grinding circuit, which is the main factor that affects the flotation recovery of gold ore difficult to be effectively improved .In order to improve the recovery rate of this gold ore, the grinding process investigation and flash flotation test of the underflow of a hydrohydrocyclone underflow flash were carried out. the size composition, enrichment of main elements of each grain level and the dissociation degree of monomer dissociation in hydrohydrocyclone's underflow were investigated, the technological conditions of the hydrohydrocyclone's underflow flash flotation and the reagent system were determined. Increase flash flotation at the hydrohydrocyclone's underflow, 23.64 g/t of gold concentrate and 44.36% of gold recovery can be obtained. The test can prove that flash flotation can reduce the the cycle of gold in grinding circuit and improve the recovery rate of gold.
作者
明平田
李飞
Ming Pingtian;Li Fei(Qinghai 6th Institute of Geology and Mineral Exploration,Qinghai Engineering Research Center for GoldMineral Resource Development, Dulan, Qinghai, China)
出处
《矿产综合利用》
CAS
北大核心
2019年第4期73-78,共6页
Multipurpose Utilization of Mineral Resources
基金
青海省创新平台建设项目(2016-GX-G02)
青海省海西州科技支撑计划项目(2017-103)联合资助
关键词
金矿
磨矿分级
旋流器底流
过粉碎
闪速浮选
Gold ore
Grinding and classification
Hydrocyclone underflow
Overcomminute
Flash flotation
