文献类型：期刊文献

中文题名：光卤石反浮选-冷结晶法生产氯化钾过程的结晶热力学

英文题名：Crystallization Thermodynamics of Reverse-Flotation and Cold-Crystallization Process for Producing Potassium Chloride from KCl·MgCl_2·H_2O

作者：李小松[1,2];陈艳[1];罗妍[1];汪瑾[1];宋兴福[1];于建国[1]

机构：[1]华东理工大学国家盐湖资源综合利用工程技术研究中心,上海200237;[2]青海盐湖工业集团股份有限公司,青海格尔木816000

年份：2009

卷号：35

期号：4

起止页码：506

中文期刊名：华东理工大学学报（自然科学版）

外文期刊名：Journal of East China University of Science and Technology

收录：CSTPCD;;Scopus;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：青海省2006年重大科技攻关项目(2006-G-161);上海市重点学科建设项目(B506);新世纪优秀人才支持计划资助(NCET-08-0776)

语种：中文

中文关键词：氯化钾;溶解度;超溶解度;介稳区

外文关键词：KCl; solubility; supersolubility; metastable zone

摘要：采用激光法,在氯化镁-水体系中研究了氯化镁、氯化钠的质量分数、温度、搅拌速率和降温速率等参数对氯化钾溶解度和超溶解度的影响。采用简化的状态方程对溶解度数据进行模拟和预测,并将模拟结果与实验值进行比较。结果表明:升高温度、降低氯化镁质量分数可以提高氯化钾的溶解度和超溶解度,溶解度模型预测值与实验值吻合较好;介稳区宽度随氯化钠质量分数的增加而变窄;降温速率、搅拌速率对介稳区宽度影响很小。
The effects of MgCl2 and NaCl concentration, stirring speed, temperature and cooling rate on solubility and supersolubility of KCl were systematically investigated by using laser method in MgCl2- H2O system. Two models were presented to simulate and predict the solubility of KCl, and results between predicted and experimental ones were compared. The solubility and supuersolubility were increased with increasing temperature or decreasing MgCl2 concentration. The predicted results were well consistent with the experimental data. Crystallization metastable zone width （MSZW） was significantly narrowed with increasing NaCl concentration, while the stirring speed and cooling rate had less effect on MSZW.