中国非金属矿工业导刊Issue(4)：6-8,3.
风积沙制备水化硅酸钙的工艺研究
Research Process of Preparation Hydrated Calcium Silicate by Desert Sand
张延大1
作者信息
- 1. 内蒙古仁创沙漠资源利用研究院有限公司,内蒙古正蓝旗027200
- 折叠
摘要
Abstract
Desert sand and industrial waste are utilized to synthesize hydrothermal calcium silicate crystal material.Scouring desert sand to remove impurities,wet grinding of adding agents to obtain silica superfine powder,FGD gypsum is disposed by carbon thermal reduction reaction to produce lime powder and preparation lime milk by slaking and straining.The process adopt two-step activating treatment to react,raw material is mixed times to CaO/SiO2 reach 0.98～1.0 by fly ash as activator.Technological parameter is ratio of liquid to solid 20～40mL/g,pressure 2.0-3.0MPa,temperature 200～220℃,reaction time 8h,and stirring speed 300～350rpm in temperature rise period and 60～80rpm in heat preservation.After hydrothermal reaction,the slurry is mould and dry to be hydrated calcium silicate product.关键词
风积沙/粉煤灰/脱硫石膏/水化硅酸钙Key words
desert sand/fly ash/flue gas desulphurization gypsum/hydrated calcium silicate分类
化学化工引用本文复制引用
张延大..风积沙制备水化硅酸钙的工艺研究[J].中国非金属矿工业导刊,2017,(4):6-8,3.
