哈密硅灰石制备白炭黑工艺的研究  

Study on Preparation Process of Silica with Wollastonite from Hami

作　　者：任肖冬[1] 刘月娥[1] 庞桂林[1] 甄卫军[1] 陈进江 常朝锋 

机构地区：[1]新疆大学化学化工学院,新疆乌鲁木齐830046 [2]新疆兵团农十三师兴达矿业公司,新疆哈密839000

出　　处：《非金属矿》2010年第2期11-14,共4页Non-Metallic Mines

基　　金：自治区高校科研计划重点项目(XJEDU2006I14);兵团科技攻关及自然科学横向课题项目

摘　　要：以哈密硅灰石为原料,分别通过直接制备、硅灰石矿预提纯及分级制备3种工艺方法,制备了3种白炭黑产品。对所得产品按HG/T 3061-1999进行分析,其中3种产品的SiO2含量均大于90%,比表面积分别为63.83m2/g、90.79m2/g、301.84m2/g。通过SEM、TEM、XRD等手段检测了产品的性能。TEM图像显示白炭黑的形貌近似球状粒子。XRD分析显示分级制备白炭黑为无定型结构,而直接制备和预提纯制备白炭黑含有一定的晶型结构。Three different preparation processes including direct production, depuration of wollastonite and classified production have been taken into preparing three kinds of silica with wollastonite from Hami, and the products have been analysed according to standard of HG/T3061-1999, the contents of SiO2 are more than 90%, the specific areas of three products are 63.83m^2/g, 90.79m^2/g and 301.84m^2/g respectively. The performances of the products have been studied by SEM, TEM, XRD. The TEM micrograph showed that the shape of silica particles was nearly spherical. The structure of silica by classified production was amorphous by XRD analysis. However, the structures of silica by direct production or depuration production had some crystal.

关 键 词：硅灰石 白炭黑 溶胶-凝胶法 聚乙二醇分散剂 

分 类 号：TD985[矿业工程—选矿]