文献类型：期刊文献

中文题名：废弃水氯镁石微量杂质脱除制电解原料研究

英文题名：Study on Removal Technologies of Microscale Impurities from MgCl_2 for Making Electrolysis Raw Materials

作者：孙泽[1];孙淑英[1];晋心文[1];路贵民[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

年份：2010

卷号：33

期号：S2

起止页码：301

中文期刊名：环境科学与技术

外文期刊名：Environmental Science & Technology

收录：CSTPCD;;北大核心:【北大核心2008】；CSCD:【CSCD_E2011_2012】；

基金：上海市自然科学基金项目(09ZR147900);教育部新世纪人才计划(NCET-08-0776);华东理工大学优秀青年教师科研基金(YB0157115)

语种：中文

中文关键词：废弃水氯镁石;资源利用;杂质脱除

外文关键词：waste bischofite;resources utilization;removal impurities

摘要：青海地区以光卤石为原料生产氯化钾,大量排放废弃水氯镁石,多年的排放积累严重影响到察尔汗盐湖的卤水成分平衡,同时已影响到钾肥的生产,当地称其为"镁害"。变废为宝的最优途径是将水氯镁石脱水进行电解得到金属镁,对电解过程有害的杂质主要是SO42-、Fe2+、B3+。文章通过离心、筛分、反应等物理、化学手段对水氯镁石进行净化处理,使得水氯镁石中SO42-≤30×10-6;Fe2++Fe3+≤5×10-6;B3+≤3×10-6,达到了电解原料的要求,文中各离子浓度的测量选用分光光度法,文章为资源有效利用和当地环境问题的解决提供了途径。
Nowadays,there is 'harmful magnesium' in Qinghai province.For so much bischofite were discarded after production of potassium chloride.More and more discarded bischofite were put on the ground for many years,they had harmful effects on balance of brine species and production of potassium chloride.The best way to make discarded bischofite become useful resources is to electrolysis bischofite to get magnesium.But there are some minim harmful impurities in bischofite for electrolysis process,such as SO42-、Fe2+、B3+.In this paper,a suitable way to utilize resources and solve environmental problem in the local was supplied.Through centrifugation,sieving and some chemical reaction,the concentration of SO42-,iron and boron in bischofite kept less than30,5,3mg/kg,respectively.Those bischofite can be used to electrolysis for magnesium production.And spectrophotometric determinations of SO42-,iron and boron in solutions were used in the paper.