某氧化铅锌矿浮选尾矿回收氧化锌选矿试验研究  

Experimental Study on Recovery of Zinc Oxide from Flotation Tailings of a Lead-Zinc Oxide Ore

作　　者：杨俊龙[1] 郭艳华[1,2] 马立成 柏亚林 叶树峰[2] YANG Junlong;GUO Yanhua;MA Licheng;BAI Yalin;YE Shufeng(Institute of Mineral Engineering,Northwest Research Institute of Mining and Metallurgy,Baiyin 730900,Gansu,China;Institute of Process Engineering,Chinese Academy of Sciences,Beijing 100080,China)

机构地区：[1]西北矿冶研究院矿物工程研究所,甘肃白银730900 [2]中国科学院过程工程研究所,北京100080

出　　处：《有色金属（选矿部分）》2024年第12期84-90,共7页Nonferrous Metals（Mineral Processing Section）

基　　金：北京市自然科学基金资助项目(232067);介科学与工程国家重点实验室科研基金资助项目(MESO-23-A06)。

摘　　要：内蒙古某铅锌矿铅、锌氧化率均较高。选厂采用硫化铅-硫化锌-氧化铅-氧化锌顺序优先浮选工艺流程,回收氧化锌资源存在选矿成本较高、回收指标较差等问题。为较好回收氧化锌资源,以现场氧化铅浮选尾矿矿浆为研究对象,锌品位为3.70%,分别进行了硫化—胺法浮选、脱泥—硫化浮选和摇床重选三种工艺流程的探索试验,脱泥—硫化浮选虽然细泥中带走部分锌,但是脱除细泥后,浮选矿浆条件得到了较大改善,最终确定采用脱泥—硫化浮选工艺作为该氧化锌回收的原则工艺流程。试验考察了搅拌功率、搅拌时间对脱泥效果的影响,并研究了调整剂和捕收剂种类及用量对选矿指标的影响。结果表明,采用脱泥—硫化浮选工艺,搅拌功率1 000 W、搅拌时间4 min时脱泥效果较好;新型药剂GH-7、GY-101较常规药剂,可有效地提高锌选矿指标,减少药剂用量,降低选矿成本;当GH-7用量为2 000 g/t、硫化钠用量为20 000 g/t、GY-101用量为300 g/t时,可获得氧化锌精矿中锌品位27.29%、锌回收率77.13%的浮选闭路试验指标。与采用现场生产工艺及药剂制度的实验室闭路试验指标相比,锌品位提高2个左右百分点,锌回收率提高10个左右百分点。试验确定的工艺流程及药剂制度,对现场氧化锌的生产具有较好的指导意义,为企业增加了经济效益。In a lead-zinc mine in Inner Mongolia,the oxidation rates of lead and zinc are relatively high.The concentrator adopts a prioritized flotation process of the lead sulfide-zinc sulfide-lead oxide-zinc oxide,which results in high beneficiation costs and poor recovery index for the recovery of zinc oxide resources.In order to better recover the zinc oxide resources,the on-site lead oxide flotation tailings slurry was used as the research object,and its zinc grade was 3.70%.Three process exploration tests were carried out,namely sulfidation-amine flotation,desliming-sulfidation flotation and shaking table gravity separation.Although desliming-sulfidation flotation took away some zinc in the fine mud,the flotation slurry conditions were greatly improved after the fine mud was removed.Finally,the desliming-sulfidation flotation process was determined as the principle process for the recovery of zinc oxide.The effects of stirring power and stirring time on desliming were investigated,and the effects of the type and dosage of regulators and collectors on mineral processing indexes were studied.The results showed that the desliming-sulfurization flotation process had a better desliming effect when the stirring power was 1 ooo W and the stirring time was 4 min.The new reagents GH-7 and GY-10l can effectively improve zinc mineral processing indexes,reduce reagent dosage and mineral processing cost compared with conventional reagents.When the dosage of GH-7 was 2000 g/t,the dosage of sodium sulfide was 20000 g/t,and the dosage of GY-101 was 300 g/t,the zinc oxide flotation locked-cycle test indexes of zinc grade of 27.29%and zinc recovery of 77.13%can be obtained.Compared with the laboratory locked-cycle test indexes using on-site production processes and reagent systems,zinc grade was increased by about 2 percentage points and zinc recovery was increased by about 10 percentage points.The flowsheet and reagent system determined by the tests had a good guiding significance for the on-site zinc oxide production and increase th

关 键 词：尾矿 氧化锌 脱泥-浮选 分散剂 GY-101 GH-7 

分 类 号：TD952[矿业工程—选矿] TD923