氰化渣脉动高梯度磁选回收褐铁矿的试验研究  

Experimental study on recovery of limonite from a cyanide residue of oxidize ore with PHGMS technology

作　　者：彭世文 高起方 姜亚雄[1,2] 聂祖明 先永骏 熊宇农[1] 陈禄政 PENG Shi-wen;GAO Qi-fang;JIANG Ya-xiong;NIE Zu-ming;XIAN Yong-jun;XIONG Yu-nong;CHEN Lu-zheng;无(Faculty of Land and Resource Engineering,Kunming University of Science and Technology,Kunming 650093,China;Yunnan Gold Mining Group Co.Ltd.,Kunming 650093,China;Heqing Beiya Mining Co.Ltd.,Dali 671000,Yunnan,China)

机构地区：[1]昆明理工大学国土资源工程学院,昆明650093 [2]云南黄金矿业集团股份有限公司,昆明650093 [3]鹤庆北衙矿业有限公司,云南大理671000

出　　处：《矿冶》2022年第4期13-18,共6页Mining And Metallurgy

基　　金：国家自然科学基金项目(51874152);云南省高层次人才引进计划项目(CCC2132005A)。

摘　　要：云南某氧化矿氰化渣经过弱磁选工艺回收磁铁矿后的尾矿仍含有大量的褐铁矿资源,经济价值较高。然而,该尾矿铁品位较低为20.42%,粒度微细,泥化严重,其中褐铁矿中铁分布率高达94.76%,回收利用难度较大。研究针对该氰化渣尾矿性质,采用脉动高梯度一粗一精磁选流程,在最优分选条件下可获得产率22.35%、铁品位47.12%、铁回收率51.57%的褐铁精矿。采用脉动高梯度磁选工艺回收该氰化渣尾矿中的褐铁矿,分选成本低、处理量大、分选指标好,为回收该低品位氰化渣尾矿中微细褐铁矿提供了有效的技术解决方案。The tailings of a cyanide residue from a low intensity magnetic separation process for recovery of magnetite in Yunnan province,still contain a large amount of limonite.However,the tailings have a low iron grade assaying 20.42%,and the iron distribution of limonite reaches as high as 94.76%,however,they are ultra-finely distributed and seriously slimed,resulting in the difficulty for limonite recovery.In this study,pulsating high gradient magnetic separation was used to recover the limonite minerals from the tailings.Through a roughing-cleaning process a limonite concentrate with a yield of 22.35%,Fe grade of 47.12%and Fe recovery of 51.57%was produced,under the optimized separation conditions.The recovery of limonite with pulsating high gradient magnetic separation has such advantages as low cost,large throughput and excellent separation performance,and thus it provides an effective technical solution for the recovery of limonite from the low-grade cyanide residue.

关 键 词：氰化渣 脉动高梯度磁选 褐铁矿 铁回收 

分 类 号：TD924[矿业工程—选矿]