研究蒙脱石原料及其散剂的粒度与晶体杂质
Research on particle size and crystal impurity of montmorillonite and montmorillonite powder
分类号：
出版年·卷·期（页码）：2012,32 (5):0-0
DOI:
10.16155/j.0254-1793.2017.01.01
-----摘要：-------------------------------------------------------------------------------------------
目的: 建立更为有效的激光粒度法与X-射线衍射法测定国产蒙脱石原料及其散剂的粒度与晶体杂质。 方法: 粒度测定:使用马尔文2000激光粒度仪,在800 mL水中以3000 r·min-1搅拌15 min,湿法测定。晶体杂质测定:采用X-射线衍射法;阴极:铜;滤过片:镍;电源:45 kV、40 mA;狭缝:0.1°;衍射角(2θ)从2°到80°扫描。 结果: 考察的5个企业15批蒙脱石原料中,60%均检出致癌物方英石;生产蒙脱石散的20个企业样品65%的产品检出方英石。 结论: 激光粒度法更为真实地反映了蒙脱石粒度的分布情况,可明显区分不同企业蒙脱石粒度的差别。X-射线衍射法可有效控制蒙脱石及其散剂中致癌物方英石的量。
-----英文摘要：---------------------------------------------------------------------------------------
Objective: To establish a method to determine particle size and crystal impurity of montmorillonite and montmorillonite powder by laser particle analyzer and X-ray diffraction analyzer. Methods: Particle size analyzer: 3000 r·min-1 stirring with 800 mL water for 15 min by mastersizer 2000 laser particle analyzer.X-ray diffraction method: negative electrode,copper;filter,nickel; power supply,45 kV and 40 mA; slit,0.1°; diffraction angle,from 2°to 80°. Results: 15 batch montmorillonite made by 5 manufacturer,christobalite was detected in out in 60% montmorillonite manufacturer,and was detected out in 65% montmorillonite powder manufacturer. Conclusion: Laser particle analyzer can react the distribution of particle size actually,it can also tell the difference between manufacturers.X-ray diffraction analyzer can control the amount of carcinogenic substance christobalite in montmorillonite and montmorillonite powder.
-----参考文献：---------------------------------------------------------------------------------------
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