Z-200作捕收剂时大分子有机抑制剂对铜铅锌硫化矿物浮选的影响  

Effect of Macromolecular Organic Depressants on Flotation of Copper, Lead & Zinc Sulfide Minerals with Z-200 as Collector

作　　者：谭欣 孙传尧 TAN Xin;SUN Chuanyao(BGRIMM Technology Group,Beijing 100160,China;State Key Laboratory of Mineral Processing,Beijing 102628,China)

机构地区：[1]矿冶科技集团有限公司,北京100160 [2]矿物加工科学与技术国家重点实验室,北京102628

出　　处：《有色金属（选矿部分）》2024年第10期124-132,共9页Nonferrous Metals（Mineral Processing Section）

基　　金：国家重点研发计划项目(2022YFC2904602)。

摘　　要：研究考察了黄铜矿、方铅矿和闪锌矿在以糊精、腐殖酸钠(HA-Na)、阳离子瓜尔胶(CGG)和DP115(改性聚丙烯酰胺)为抑制剂、Z-200为捕收剂的体系中的浮选特性。研究表明,与传统的先加大分子有机抑制剂后加Z-200捕收剂相比,3种硫化矿物在先加Z-200后加大分子有机抑制剂的体系中表现出不同的浮选行为:黄铜矿基本不受糊精影响,而糊精更强烈抑制方铅矿,闪锌矿被较低用量糊精轻微活化且与先加糊精后加Z-200时的相当,较高用量糊精则略微增强抑制闪锌矿;HA-Na均减弱对3种硫化矿物的抑制;CGG对闪锌矿特别是黄铜矿的抑制增强,而对方铅矿的抑制与CGG先加时的基本相当;黄铜矿基本不受DP115影响,较低用量DP115更强烈抑制方铅矿和闪锌矿,而较高用量DP115对方铅矿和闪锌矿的抑制与先加DP115后加Z-200时的基本相当。研究结果可为Z-200作捕收剂时铜铅锌硫化矿浮选分离时有机大分子抑制剂的选择、浮选分离效率的提高提供参考。The flotation characteristics of chalcopyrite, galena and sphalerite in the system with dextrin, sodium humate(HA-Na),cationic guar gum(CGG) and DP115(modified polyacrylamide) as inhibitors and Z-200 as collector were investigated.The results showed that compared with the traditional system of adding macromolecular organic inhibitor first and then adding Z-200 collector, the three sulfide minerals showed different flotation behaviors in the system of adding Z-200 first and then adding macromolecular organic inhibitor.Chalcopyrite was basically not affected by dextrin, while dextrin more strongly inhibits galena, sphalerite was slightly activated by lower dosage of dextrin and was equivalent to that of adding dextrin first and then adding Z-200,and higher dosage of dextrin slightly enhanced the inhibition of sphalerite.HA-Na weakened the inhibition of three sulfide minerals.The inhibition of CGG on sphalerite, especially chalcopyrite, was enhanced, while the inhibition of galena was basically equivalent to that of CGG when added first.Chalcopyrite was basically not affected by DP115,and the lower amount of DP115 more strongly inhibited galena and sphalerite, while the inhibition of higher amount of DP115 on galena and sphalerite was basically the same as that of adding DP115 first and then Z-200.The research results can provide reference for the selection of organic macromolecular inhibitors and the improvement of flotation separation efficiency when Z-200 was used as collector in the flotation separation of copper-lead-zinc sulfide ore.

关 键 词：黄铜矿 方铅矿 闪锌矿 Z-200 有机抑制剂 加药顺序 

分 类 号：TD952[矿业工程—选矿]