钙离子和六偏磷酸钠对矿浆流变性影响研究  

Effects of Calcium Ion and Sodium Hexametaphosphate on Slurry Rheology

作　　者：余晓光 胡家城 石晴[2] Yu Xiaoguang;Hu Jiacheng;Shi Qing(Mineral Chinalco Peru,Chinalco Mining Corporation International,Lima,Peru 999084;School of Mineral Processing and Bioengineering,Central South University,Changsha,Hunan 410083)

机构地区：[1]中铝矿业国际中铝秘鲁矿业公司,秘鲁利马999084 [2]中南大学资源加工与生物工程学院,湖南长沙410083

出　　处：《非金属矿》2020年第4期24-27,共4页Non-Metallic Mines

基　　金：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);中南大学研究生创新项目(2019zzts994)。

摘　　要：从矿浆流变学的角度出发,利用Anton Paar MCR102型旋转流变仪对蛇纹石矿浆屈服应力和黏度进行测量。结果表明,钙离子和六偏磷酸钠均能降低蛇纹石矿浆的黏度和屈服应力,使蛇纹石颗粒相互分散,当蛇纹石矿浆中存在一定量的钙离子时,加入六偏磷酸钠对矿浆屈服应力和黏度影响较小。紫外分光光度测试结果显示,当矿浆中存在一定量的钙离子时,六偏磷酸钠会与钙离子发生反应,降低矿浆中的钙离子含量,造成六偏磷酸钠对蛇纹石的分散效果较差。From the perspective of rheology, this paper uses Anton Paar MCR102 rotary rheometer to measure the yield stress and viscosity of serpentine pulp. It is found that both calcium ion and sodium hexametaphosphate can reduce the viscosity of serpentine pulp. And yield stress make serpentine particles disperse each other;however, when a certain amount of calcium ions are present in serpentine pulp, the addition of sodium hexametaphosphate has little effect on the yield stress and viscosity of the pulp. According to the UV spectrophotometric test results, when there is a certain amount of calcium ions in the pulp, the addition of sodium hexametaphosphate will reduce the calcium ion content in the pulp. Therefore, when a certain concentration of calcium ions is present in the pulp, the dispersing effect of sodium hexametaphosphate on serpentine is poor.

关 键 词：蛇纹石 钙离子 六偏磷酸钠 流变性 分光光度法 

分 类 号：TD97[矿业工程—选矿]