基于硫化铋低温碱性熔炼的熔体物化性质分析  

Analysis of Physicochemical Properties of Melt Basedon Low Temperature Alkaline Melting of Bismuth Sulfide

作　　者：牟文宁 辛海霞 雷雪飞 翟玉春 Mu Wenning;Xin Haixia;Lei Xuefei;Zhai Yuchun(School of Resources&Materials,Northeastern University at Qinghuangdao,Key Laboratory of Resources Cleaner Conversion and Efficient Utilization Qinhuangdao City,Qinhuangdao,Heibei,China;School of Metallurgy,Northeastern University,Shenyang,Liaoning,China)

机构地区：[1]东北大学秦皇岛分校资源与材料学院,秦皇岛市资源清洁转化与高效利用重点实验室,河北秦皇岛066004 [2]东北大学冶金学院,辽宁沈阳110819

出　　处：《矿产综合利用》2020年第2期203-208,202,共7页Multipurpose Utilization of Mineral Resources

基　　金：国家自然科学基金资助项目(51234009);河北省高等学校青年拔尖人才项目(BJ201604);中央高校基本科研业务专项资金资助(N182304016)。

摘　　要：基于硫化铋精矿低温碱性熔炼技术,采用半球点法、旋转柱体法、阿基米德法和拉筒法,测定Bi2S3-NaOH体系的熔化温度、高温密度以及熔体的粘度和表面张力,研究不同NaOH含量和温度对Bi2S3-NaOH体系物化性质的影响,结果表明,随着温度的升高,Bi2S3-NaOH体系熔化过程分为缓慢收缩,快速收缩和流动阶段,熔化温度随着NaOH含量的增加先减小,达到最低共熔温度后逐渐增大;Bi2S3-NaOH熔体的高温密度、表面张力、粘度在NaOH含量一定条件下都随着温度的升高增加而减小,温度一定条件下随着氢氧化钠含量的增加而减小。研究结果可为硫化铋精矿低温清洁冶金技术的优化提供基础数据参考。Based on the low temperature alkaline smelting technology of bismuth sulfide concentrate,the melting temperature,high temperature density,viscosity and surface tension of Bi2S3-NaOH system were measured by hemispheric point method,rotating column method,Archimedes method and pulling cylinder method,and the effects of different NaOH content and temperature on the physicochemical properties of Bi2S3-NaOH system were investigated.The results show that with the increase of temperature,the melting process of Bi2S3-NaOH system is divided into slow shrinkage,rapid shrinkage and flow phase.The melting temperature decreases first with the increase of NaOH content to reach the lowest eutectic point,and then increases gradually.The high temperature density,surface tension and viscosity of Bi2S3-NaOH melt decrease with the increase of temperature at a certainNaOH content,and decrease with the increase of NaOH content at a certain temperature.The study can providebasic data for the optimization of low temperature clean metallurgical technology of bismuth sulfide concentrate.

关 键 词：低温碱性熔炼 熔化温度 粘度 表面张力 高温密度 

分 类 号：TD989[矿业工程—选矿] TF815[冶金工程—有色金属冶金]