察尔汗盐湖察尔汗二级系统S_3盐层晶间卤水及固相化学成分的相关性研究

通过对化学成分相关性的研究认为,晶间卤水中的NaCl是饱和的,MgCl2是不饱和的,KCl饱和与不饱和两种卤水共存。随着晶间卤水密度的降低,NaCl含量升高,MgCl2含量降低,KCl含量先升后降。且存在高钾晶卤带和高钾固相带。晶间卤水浓度变化的原因是阶段性淡化。固相钾主要以光卤石形式存在,晶卤钾与固相钾存在单向平衡。目前,S3盐层大部分部位的光卤石处于溶解状态,溶解的KCl进入晶间卤水,MgCl2仍留存于固相中;可溶性镁在盐层中可能存在另一种形式—被粘土吸附。在S3盐层沉积和盐湖干涸过程,曾出现盐滩和湖水并存的局面。

Study on Chemical Compositions Correlation of Intercrystalline Brine and Solid of Salt Bed S3 of Qarhan Second Grade System in Qarhan Salt Lake Area

Several verdicts were given by the research of chemical compositions correlation.NaCl in the intercrystalline brine is in saturation state,the MgCl2 is in un-saturation state,and there are saturation and un-saturation intercrystalline brine of KCl.When the density of intercrystalline brine reduces,NaCl concentration rises,MgCl2 concentration reduces,while KCl concentration rises in the bine of which the density is more than 1.251,KCl concentration reduces in the bine of which the density is less than 1.251....