硫精矿浮选—焙烧综合利用硫酸烧渣中铁试验研究  

Experimental study on the comprehensive utilization of iron in the sulfuric acid slag by sulfur concentrate flotation-roasting

作　　者：郎淳慧 张鸣昕[1] 崔商哲 王法春[1] 任洪胜[1] 刘新艳[1] 韩治纬 Lang Chunhui;Zhang Mingxin;Cui Shangzhe;Wang Fachun;Ren Hongsheng;Liu Xinyan;Han Zhiwei(Jilin Metallurgy Research Institute)

机构地区：[1]吉林省冶金研究院

出　　处：《黄金》2023年第3期48-52,共5页Gold

基　　金：吉林省发改委产业技术研究与开发项目(2020C025-3)。

摘　　要：为综合利用硫酸烧渣中的铁,采用浮选—焙烧工艺对硫酸烧渣原料硫精矿进行提纯除杂试验研究,考察了磨矿细度、抑制剂、捕收剂等对试验指标的影响。结果表明:在磨矿细度-0.074 mm占70%条件下,浮选作业添加高效抑制剂抑制脉石矿物,采用丁基黄药作为捕收剂,提高了精矿品位;闭路浮选试验获得的精矿进一步焙烧,通过控制适宜的焙烧条件,获得的硫酸烧渣铁品位达到65%以上,含硫低于0.4%,可作为铁精矿直接销售。该工艺能综合回收铁,使硫酸烧渣资源得到充分利用,可为企业带来显著的经济效益。To comprehensively utilize the iron in sulfuric acid slag,the flotation-roasting process is studied by experiment to purify the raw materials of sulfuric acid slag,sulfur concentrates,and remove the impurities,and investigates the influence of the grinding fineness,the inhibitor and the collector on the test index.The results show that when the grinding fineness-0.074 mm accounts for 70%,the sulfur concentrate grade is improved by adding an efficient inhibitor to inhibit gangue minerals to flotation and using butyl xanthate as the collector;the concentrate obtained in the closed-circuit flotation test is further roasted,which,under the proper control of roasting conditions,obtains the sulfuric acid slag with an iron grade over 65%and sulfur content below 0.4%,and can be sold directly as iron concentrate.The process can comprehensively recover iron,fully utilizing the resources of sulfuric acid slag and creating significant profits for enterprises.

关 键 词：硫精矿 硫酸烧渣 浮选 高效抑制剂 焙烧 

分 类 号：TF803[冶金工程—有色金属冶金]