期刊论文

Study on Removal of Cristobalite by Exfoliating 2D Montmorillonite for Preparation of High Purity Montmorillonite

中文

非金属矿

1000-8098

2023

46

02

17-21

10.3969/j.issn.1000-8098.2023.02.005

2022YFC2906300:国家重点研发计划 51874220:国家自然科学基金 51904215:国家自然科学基金 202210497108:国家级大学生创新创业训练计划项目

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高纯蒙脱石的制备是膨润土高值化应用的关键，伴生方石英的去除一直是高纯蒙脱石制备的难题。本试验从膨润土工艺矿物学出发，针对难去除微细粒方石英提出了钠化-二维剥片-离心提纯工艺，并与钠化-离心提纯工艺进行对比。结果表明，方石英主要赋存在微细粒级中，去除难度大。钠化-二维剥片-离心提纯工艺利用了二维蒙脱石优异的分散稳定性，可完全去除蒙脱石中方石英。与常规钠化-离心提纯工艺相比，新工艺对方石英去除效果好，产率提升2倍，提纯产率可达55.2%。二维剥片提纯新工艺不仅对高纯蒙脱石的制备具有重要指导意义，而且有助于推动蒙脱石高值化应用，具有很好的工业应用潜力。

The preparation of high purity montmorillonite is the key to the high-value application of bentonite,but the removal of associated cristobalite is a problem in the preparation of high purity montmorillonite.In this work,based on the process mineralogy of bentonite,the p...MORE The preparation of high purity montmorillonite is the key to the high-value application of bentonite,but the removal of associated cristobalite is a problem in the preparation of high purity montmorillonite.In this work,based on the process mineralogy of bentonite,the purification process of sodium modification-exfoliati...