机械筛分法去除电石渣中非钙成分的研究  

Study on Removal of Non-calcium Ingredients from Carbide Slag by Mechanical Screening

作　　者：侯新凯[1] 武志江 郑伟豪 马香 强兴东 Hou Xinkai;Wu Zhijiang;Zheng Weihao;Ma Xiang;Qiang Xingdong(College of Material Science and Engineering,Xi’an University of Architecture and Technology,Xi’an,Shaanxi,China)

机构地区：[1]西安建筑科技大学材料科学与工程学院,陕西西安710055

出　　处：《矿产综合利用》2020年第2期161-166,155,共7页Multipurpose Utilization of Mineral Resources

基　　金：陕西省自然科学基础研究计划项目(2016JM5010);山西省科技创新项目(2013101038)。

摘　　要：为寻求一种低成本、有效的电石渣除杂工艺,采用干法筛分以及粉磨后湿法筛分两种方式研究分析电石渣中化学成分的粒级分布特征,杂质富集粒级范围以及粉磨对成分分布的影响。结果表明,电石渣中杂质成分主要集中在-38μm和+315μm;粉磨可将松散的Ca(OH)2团聚体解聚分散,粉磨样除去杂质富集粒级后,SiO2含量由5.60%降至4.89%,且CaO含量大于85%,满足工业化生产需求。In order to find a low-cost and effective impurity removal process for calcium carbide slag,the particle size distribution characteristics of chemical components in calcium carbide slag,the impurity enrichment size range and the effect of grinding on the distribution of ingredients were studied and analyzed using dry sieving and wet sieving after grinding.The results showed that the main impurities in carbide slag were in the size ranges of-38μm and+315μm.The loose Ca(OH)2 aggregates can be depolymerized and dispersed by grinding.After removing the impurities and enriching particle size,the content of SiO2 in the ground sample decreased from 5.60% to 4.89%.The content of CaO was greater than 85%,which meets the needs of industrial production.

关 键 词：电石渣 氢氧化钙 筛分分选 粒级分布 除杂 

分 类 号：TD985[矿业工程—选矿]