四氯化碳重液法分离蒙脱石

Separation of Montmorillonite from Clay Minerals by Using CCl4 as a Heavy Liquid

摘要: 提出了一种新的蒙脱石重液分离方法，蒙脱石在正辛胺水溶液中浸过后，密度降至１．６０×１０３ｋｇ／ｍ３以下，可用ＣＣｌ４作重液实现与其它粘土矿物及杂质的分离。用７．５ｍｏｌ／ＬＮａＯＨ溶液处理此含有正辛胺的蒙脱石，可得纯度很高的钠蒙脱石。用此法进行蒙脱石定量分析，所得结果与国际铸造协会推荐的溴仿酒精重液法相符合，且成本低、操作方便、污染小。

Abstract: A new method for the separation of montmorillonite from clay minerals is presented in this paper. After immersed in n C 8H 17 NH 2 solution, the density of montmorillonite is reduced to less than 1.60 t/m 3 and can be separated from clay miner