摘要
在成功开发以工业石灰为原料 ,经破碎、超细粉碎、加热脱水与表面改性生产具有流动性与防潮性的微米级氧化钙新工艺的基础上 ,利用现代分析方法考察改性剂的作用机理。优化工艺条件为 :脱水与改性温度为 1 50℃ ,30～ 60min ;改性剂选择有机硅 ,用量 1 5 %。粉碎过程中改性剂的作用机理为 :超粉碎过程中添加有机硅有利于阻止粉碎颗粒之间的团聚和颗粒与辊道之间的粘附 ,同时降低了氧化钙吸收水消解作用。
The micro-calcuim oxide of fluidity and moisture resistance was successfully developed by the process of the crushing, micro-crushing, water deprivation by heating and surface modification, with industrial calcium oxide as the raw material. The advantageous conditions were like this: water deprivation and surface modification under 150°C, mixing for 30-60 min, with 1.5% of mass ratio of silicoorganic compound (as additive). The surface modification mechanism was following: the agglutination between particles and the adherence between particle and roller road decreased by adding silicoorganic compound during crushing. Meanwhile, water absorption of calcium oxide would be reduced. The fluidity and moisture resistance was achieved by the function of silico-oxygen of activation center and hydrophobic group on the particle surface.
出处
《现代化工》
EI
CAS
CSCD
北大核心
2003年第4期32-34,共3页
Modern Chemical Industry
基金
马鞍山市科技基金资助项目 (2 1 - 31 - 1 4 )
