【摘要】 研究了察尔汗盐湖粗光卤石中各种无机盐晶体的存在形式及形态.通过筛分法将粗光卤石矿分级,运用化学法分析各粒级颗粒的组成.结果表明:90%以上的KCl·MgCl2·6H2O以大于0.177mm粒径的大颗粒存在,75%以上的NaCl以小于0.125mm粒径的细粒矿存在于体系中,约90%以上的CaSO4以粒径小于0.074mm的微细颗粒存在.运用X射线衍射法分析了不同粒径的光卤石矿表面的化学组成,运用光电子能谱法分析了其表面Na/Ca的摩尔比,用扫描电镜及能谱分析直接分析了各种晶体存在的形态.研究结果表明,大部分NaCl和CaSO4分别以小颗粒游离于粗光卤石矿中,未被大颗粒晶体所包裹.更多还原

【Abstract】 Particle size, surface composition and crystal configurations of Kvarkhan’s carnallite were investigated. Particle sizes and composition were determined by sieving and chemical analysis. The results showed that more than 90% of KCl·MgCl₂· 6H₂O crystal particles were larger than 0.177 mm, more than 75% of NaCl particles were smaller than 0.125 mm, and more than 90% of CaSO 4 particles were smaller than 0.074 mm. Surface compositions were studied by X-ray diffraction analysis. Ca/Na of carnallite components were determined by X-ray photoelectron spectroscopy. The results of scanning electron photomicrograph and energy-dispersive X-ray analysis demonstrated that all those crystal particles were present independently in carnallite.更多还原