碳酸根和硫酸根对蛇纹石和黄铜矿矿浆流变性和浮选的影响  

Effects of Carbonate and Sulfate on Rheology and Flotation of Serpentine and Chalcopyrite Slurry

作　　者：胡家城 石晴[1,2] 荀骆冰 罗青云 HU Jiacheng;SHI Qing;XUN Luobing;LUO Qingyun(School of Minerals Processing&Bioengineering,Central South University,Changsha 410083,China;Key Laboratory of Hunan Province for Clean and Efficient Utilization of Strategic Calcium-containing Mineral Resources,Central South University,Changsha 410083,China)

机构地区：[1]中南大学资源加工与生物工程学院,长沙410083 [2]战略含钙矿物资源清洁高效利用湖南省重点实验室,长沙410083

出　　处：《有色金属工程》2020年第10期88-94,共7页Nonferrous Metals Engineering

基　　金：中南大学中央高校基本科研业务费专项资金资助项目(2019zzts994);战略含钙矿物资源清洁高效利用湖南省重点实验室项目(2018TP1002)。

摘　　要：从矿浆流变学的角度出发,通过对矿浆流变性测量及矿物浮选试验,考察在不同碳酸根和硫酸根浓度下矿浆流变性与矿物浮选速率的变化规律。结果表明:碳酸根和硫酸根随浓度的增加都能显著降低矿浆表观黏度和屈服应力值,对矿物颗粒起分散作用。碳酸根和硫酸根的加入对黄铜矿和蛇纹石的浮选回收均有一定的促进作用,但主要是通过加快黄铜矿的浮选速率,降低精矿中MgO的含量,从而达到相对抑制蛇纹石的效果。蛇纹石浮选速率与矿浆黏度间呈一定的负相关关系。From the perspective of pulp rheology,the trends of pulp rheology and mineral flotation rate in different carbonate and sulfate concentrations are investigated by measuring the rheology and related flotation tests.The results show that carbonate and sulfate can significantly reduce the apparent viscosity and yield stress of the pulp with the increase of concentration,and have a dispersing effect on the mineral particles.At the same time,the addition of carbonate and sulfate can promote the flotation recovery of chalcopyrite and serpentine.However,it mainly achieves the effect of relatively suppressing serpentine by accelerating the flotation rate of chalcopyrite and reducing the MgO content in the concentrate.There is a negative correlation between serpentine flotation rate and pulp viscosity.

关 键 词：蛇纹石 碳酸根 硫酸根 流变性 浮选 

分 类 号：TD923[矿业工程—选矿] TD97