Model for the decomposition of carnallite in aqueous solution

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	Model for the decomposition of carnallite in aqueous solution
	Cheng, Huaide 1; Ma, Haizhou 1; Hai, Qingyu 1,2; Zhang, Zhihong 1; Xu, Liming 1; Ran, Guangfen 1
刊名	INTERNATIONAL JOURNAL OF MINERAL PROCESSING
	2015-06-10
卷号	139 页码:36-42
关键词	Carnallite Decomposition Ratio Temperature Water Amount
文献子类	Article
英文摘要	Carnallite is a double salt (KCl center dot MgCl2 center dot 6H(2)O or KMgCl3 center dot 6H(2)O), which is a common source of potassium chloride (KCl). It is treated with a mother liquor containing magnesium chloride (MgCl2), KCl and sodium chloride (NaCl), and then KCl and NaCl precipitate in the mother liquor solution. The amount of water and the temperature are the two crucial factors for the decomposition of carnallite in aqueous solution. Because of the lack of research on the decomposition process of carnallite, the yield and quality of the KCl produced are limited. In this study, we develop a model for the decomposition of carnallite based on the multi-temperature quaternary diagram of the NaCl-KCl-MgCl2-H2O system and the principle of mass conservation for MgCl2. The model is verified using experimental and literature data for different types of carnallite: normal, Mg-rich, Na-rich, and (Mg and Na)-rich. The proposed model predicts the amount of water required for decomposition of carnallite and the yield of KCl very well for normal and Mg-rich carnallite (within 2%), for Na-rich and (Mg and Na)-rich camallite (within 8%), and for ancient evaporite carnallite in Laos (within 2%). (c) 2015 Elsevier B.V. All rights reserved.
WOS关键词	MEAN SPHERICAL APPROXIMATION ; DIFFERENT TEMPERATURES ; HALITE ; CRYSTALLIZATION ; SALT ; PREDICTION ; SEAWATER ; BR
WOS研究方向	Engineering ; Mineralogy ; Mining & Mineral Processing
语种	英语
WOS记录号	WOS:000356195800006
内容类型	期刊论文
源URL	[http://ir.isl.ac.cn/handle/363002/6143]
专题	青海盐湖研究所_青海盐湖研究所知识仓储青海盐湖研究所_盐湖资源与化学实验室青海盐湖研究所_盐湖地质与环境实验室中国科学院青海盐湖研究所
作者单位	1.Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Salt Lake Resources & Chem, Xining 810008, Qinghai, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Cheng, Huaide,Ma, Haizhou,Hai, Qingyu,et al. Model for the decomposition of carnallite in aqueous solution[J]. INTERNATIONAL JOURNAL OF MINERAL PROCESSING,2015,139:36-42.
APA	Cheng, Huaide,Ma, Haizhou,Hai, Qingyu,Zhang, Zhihong,Xu, Liming,&Ran, Guangfen.(2015).Model for the decomposition of carnallite in aqueous solution.INTERNATIONAL JOURNAL OF MINERAL PROCESSING,139,36-42.
MLA	Cheng, Huaide,et al."Model for the decomposition of carnallite in aqueous solution".INTERNATIONAL JOURNAL OF MINERAL PROCESSING 139(2015):36-42.