新疆某天然钠基膨润土矿干法提纯技术研究  

Study on Dry Purification Technology of a Natural Sodium Bentonite Ore in Xinjiang

作　　者：杨启帆 于阳辉[1,2] 潘卫 安卫东[1,2] 张韬 Yang Qifan;Yu Yanghui;Pan Wei;An Weidong;Zhang Tao(Suzhou Sinoma Design and Research Institute of Non-metallic Minerals Industry Co.,Ltd.,Suzhou,Jiangsu 215151;National Engineering Research Center for Further Processing of Non-metallic Minerals,Suzhou,Jiangsu 215151)

机构地区：[1]苏州中材非金属矿工业设计研究院有限公司,江苏苏州215151 [2]国家非金属矿深加工工程技术研究中心,江苏苏州215151

出　　处：《非金属矿》2020年第2期77-79,共3页Non-Metallic Mines

基　　金：国家重点研发计划(2017YFB0310902)。

摘　　要：以新疆某天然钠基膨润土矿为研究对象,在分析原料化学组成、矿物组成、微观形貌、物理性质的基础上,制定了天然钠基膨润土的干法提纯技术方案。原料经过破碎-粉碎-分级提纯工艺,得到提纯膨润土产品。与原料相比,蒙脱石含量从44%提高到76%;吸蓝量从21.95 g/100g提高到34.61 g/100g;膨胀指数从15.0 mL/2g提高到25.0 mL/2g;SiO2含量从65.61%降低到56.69%,Al2O3含量从15.77%提高到20.14%,Na2O含量从1.53%提高到2.37%。该干法提纯技术成本低、提纯效果明显。Taking a natural sodium bentonite ore in Xinjiang as the research object,basing on the chemical elements,analysis of ore mineral composition,microstructure and physical property,developed technical scheme of dry purification of natural sodium bentonite.The bentonite products were purified by the processing technology of crushing,comminution and fractional purification.Compared to raw materials,the montmorillonite content increased from 32%to 76%.The blue absorption power increased from 21.95 g/100g to 34.61 g/100g.The exponent of expansion increased from 15.0 mL/2g to 25.0 mL/2g.The SiO2 content decreased from 65.61%to 56.69%,the Al2O3 content increased from 15.77%to 20.14%,and the Na2O content increased from 1.53%to 2.37%.The dry purification technology has low cost and obvious purification effect.

关 键 词：天然钠基膨润土 蒙脱石 干法提纯 选择性粉碎 低成本 

分 类 号：TD922[矿业工程—选矿] TD97