基本信息:
- 专利标题： 一种二氧化硅改性硫酸钡粉体的制备方法
- 专利标题（英）：Method for preparing silica modified barium sulfate powder
- 申请号：CN201710965242.8 申请日：2017-10-17
- 公开(公告)号：CN107746068A 公开(公告)日：2018-03-02
- 发明人： 李玉霞 , 任真 , 郭建平 , 冯瑜
- 申请人： 中国日用化学工业研究院
- 申请人地址： 山西省太原市迎泽区文源巷34号
- 专利权人： 中国日用化学工业研究院
- 当前专利权人： 中国日用化学工业研究院
- 当前专利权人地址： 山西省太原市迎泽区文源巷34号
- 代理机构： 太原市科瑞达专利代理有限公司
- 代理人： 刘宝贤
- 主分类号： C01F11/46
- IPC分类号： C01F11/46 ; B82Y40/00 ; B82Y30/00
A method for preparing silica modified barium sulfate powder comprises the following steps: adding a barium sulfide solution into a sodium carbonate solution, performing stirring reacting at 20-95 DEGC for 0.5-4 h, filtering the obtained solution, adding the obtained filter cake into a sodium sulfate solution, performing high-shearing stirring reacting at 20-95 DEG C for 0.5-8 h, adding sodium silicate accounting for 0.1-10% of the mole of the barium sulfide, adding a sulfuric acid solution according to a molar ratio of sulfuric acid to the sodium silicate being (1.1-1.2):1, continuously performing stirring reacting for 1-2 h, and sequentially carrying out filtration, water washing and 100-200 DEG C drying to obtain the silica modified barium sulfate. The method has the advantages of simple process, less device investment, and realization of large-scale industrialization.
公开/授权文献:
- CN107746068B 一种二氧化硅改性硫酸钡粉体的制备方法 公开/授权日：2019-06-28