新型绿色浮选体系中菱锰矿与碳酸盐脉石矿物的浮选行为研究  

Flotation Behavior of Rhodochrosite and Gangue Carbonate Minerals in a New Green Flotation System

作　　者：朱子正 唐云[1] 邓政斌 吴波 ZHU Zizheng;TANG Yun;DENG Zhengbin;WU Bo(Mining College,Guizhou University,Guiyang 550025,China)

机构地区：[1]贵州大学矿业学院,贵州贵阳550025

出　　处：《金属矿山》2024年第4期160-169,共10页Metal Mine

基　　金：贵州省省级科技计划项目(编号:黔科合支撑[2022]一般047);铜仁市科技计划项目(编号:铜市科研[2021]14号)。

摘　　要：以菱锰矿与碳酸盐脉石矿物白云石、方解石和菱铁矿为研究对象,通过浮选试验和Zeta电位、FTIR和XPS分析,系统研究了在新型绿色浮选药剂体系中矿浆p H值与药剂用量对4种碳酸盐矿物浮选行为的影响和界面作用机理。结果表明,捕收剂ZJS与抑制剂JBS可以发挥协同作用,是菱锰矿与碳酸盐脉石矿物反浮选分离的最佳组合药剂;在ZJS用量为60 mg/L、JBS用量为20 mg/L时,菱锰矿的浮选回收率仅为10%,白云石的浮选回收率大于40%,方解石和菱铁矿的浮选回收率均超过55%。Zeta电位、FTIR和XPS分析结果表明,在ZJS捕收剂浮选体系中,抑制剂JBS均以物理吸附方式作用于4种碳酸盐矿物界面,且JBS在菱锰矿界面的吸附能力强于其他碳酸盐脉石矿物,使菱锰矿亲水性增强,有利用反浮选分离;该新型浮选体系有望实现中高品位碳酸锰矿石中部分钙、镁、铁碳酸盐的脱出,为碳酸锰矿石进一步提质、降杂提供依据。Taking rhodochrosite and gangue carbonate minerals dolomite,calcite and siderite as the research objects,the effects of the pH value of the slurry and the amount of chemicals in the new green flotation system on the four flotation behavior and interfacial interaction mechanism of carbonate minerals.The results show that the collector ZJS and the inhibitor JBS have a strong synergistic effect and are the best combination of agents for the reverse flotation separation of rhodochrosite and gangue carbonate minerals.The dosage of collector ZJS is 60 mg/L,and the inhibitor JBS is 60 mg/L.When the dosage of JBS agent is 20 mg/L,the recovery of rhodochrosite is only 10%,the recovery of dolomite is more than 40%,and the recovery of calcite and siderite is more than 55%.Zeta potential,FTIR and XPS analysis results show that in the ZJS collection system,the inhibitor JBS acts on the interfaces of four carbonate minerals in a physical adsorption manner,and the adsorption capacity of JBS at the rhodochrosite interface is stronger than that of other gangue carbonates.The mineral makes rhodochrosite more hydrophilic and can be separated by reverse flotation.This new flotation system is expected to remove part of the calcium,magnesium and iron ions from high-grade manganese carbonate ore or magnetically separated manganese carbonate concentrate,providing a basis for further upgrading and reducing impurities in manganese carbonate ore.

关 键 词：菱锰矿 反浮选 碳酸盐脉石矿物 新型捕收剂 新型抑制剂 

分 类 号：TD923[矿业工程—选矿] TD951