蛇纹石酸浸渣制备白炭黑的工艺及其性能研究  

Process and Performance of Silica Prepared from Acid Leached Serpentine Slag

作　　者：高凌宇 薛静怡 吴玉楼 陈莹丽 杨喜云 GAO Lingyu;XUE Jingyi;WU Yulou;CHEN Yingli;YANG Xiyun(Central South University,Changsha 410083,China;Hunan University,Changsha 410083,China)

机构地区：[1]中南大学冶金与环境学院,湖南长沙410083 [2]湖南大学研究生院,湖南长沙410083

出　　处：《橡胶工业》2023年第8期615-620,共6页China Rubber Industry

基　　金：国家自然科学基金资助项目(51574286)。

摘　　要：以蛇纹石酸浸渣常压碱溶法制备的硅酸钠溶液为基础原材料,采用并流滴加法制备白炭黑,对白炭黑制备的工艺条件进行研究,并对制得的白炭黑进行表征。结果表明:白炭黑制备的优化工艺条件为二氧化硅质量分数11%,反应终点pH值8,反应温度80℃,电解质添加剂X(无机化合物)质量分数5%,搅拌速度300 r·min^(-1);在此条件下制得的白炭黑的平均粒径为6.96μm,DBP吸收值为2.40 mL·g^(-1),各项性能符合国家或行业标准要求。In this study,the silica was produced by using the sodium silicate solution which was obtained from the acid leached serpentine slag by using atmospheric pressure alkali solution method and parallel flow drop addition method.The process conditions for preparing the silica were studied,and the obtained silica was characterized.The results showed that the optimal process conditions for preparing the silica were:mass fraction of silicon dioxide 11%,pH value at the reaction end point 8,reaction temperature 80℃,mass fraction of electrolyte additive X(inorganic compound)5%,and stirring speed 300 r·min^(-1).The average particle size of the obtained silica under these conditions was 6.96μm and the DBP absorption value was 2.40 mL·g^(-1).The properties of the obtained silica met the requirements of the national or industrial standards.

关 键 词：蛇纹石酸浸渣 白炭黑 工艺条件 粒径 DBP吸收值 

分 类 号：TQ330.383[化学工程—橡胶工业]