Effects of Temperature on the Preparation of Magnesium Carbonate Hydrates by Reaction of MgCl2 with Na2CO3

CIESC Journal ›› 2009, Vol. 17 ›› Issue (4): 661-666.

Effects of Temperature on the Preparation of Magnesium Carbonate Hydrates by Reaction of MgCl₂ with Na₂CO₃

程文婷¹, 李志宝¹, George P. Demopoulos²

1. Key Laboratory of Green Process and Engineering, Institute of Process Engineering, National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Chinese Academy of Sciences, Beijing 100190, China;
2. Department of Mining, Materials Engineering, McGill University, 3610 University Street, Montreal, Quebec, Canada

收稿日期:2008-11-28 修回日期:2009-02-28 出版日期:2009-08-28 发布日期:2010-12-30
通讯作者: LI Zhibao, E-mail: zhibaoli@home.ipe.ac.cn
作者简介:
基金资助:
Supported by the National Natural Science Foundation of China(20876161);the National Basic Research Program of China(2007CB613501,2009CB219904)

Effects of Temperature on the Preparation of Magnesium Carbonate Hydrates by Reaction of MgCl₂ with Na₂CO₃

CHENG Wenting¹, LI Zhibao1¹, George P. Demopoulos²

1. Key Laboratory of Green Process and Engineering, Institute of Process Engineering, National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Chinese Academy of Sciences, Beijing 100190, China;
2. Department of Mining, Materials Engineering, McGill University, 3610 University Street, Montreal, Quebec, Canada

Received:2008-11-28 Revised:2009-02-28 Online:2009-08-28 Published:2010-12-30
Supported by:
Supported by the National Natural Science Foundation of China(20876161);the National Basic Research Program of China(2007CB613501,2009CB219904)

摘要/Abstract

摘要： Homogeneous(unseeded)precipitation of magnesium carbonate hydrates by the reaction of MgCl² with Na²CO³ in supersaturated solutions between 273 and 363K was investigated.The compositions,morphologies and filtration characteristics of the precipitates were studied in detail.The magnesium carbonate hydrates obtained at 313K and in the range of 343-363K showed good morphologies and filtration characteristics.Magnesium oxides(MgO)with high purity(97.6%-99.4%)were obtained by calcining magnesium carbonate hydrates at 1073K.

关键词: homogeneous precipitation, magnesium carbonate hydrates, magnesium oxide, filtration characteristic

Abstract: Homogeneous(unseeded)precipitation of magnesium carbonate hydrates by the reaction of MgCl² with Na²CO³ in supersaturated solutions between 273 and 363K was investigated.The compositions,morphologies and filtration characteristics of the precipitates were studied in detail.The magnesium carbonate hydrates obtained at 313K and in the range of 343-363K showed good morphologies and filtration characteristics.Magnesium oxides(MgO)with high purity(97.6%-99.4%)were obtained by calcining magnesium carbonate hydrates at 1073K.

Key words: homogeneous precipitation, magnesium carbonate hydrates, magnesium oxide, filtration characteristic

程文婷, 李志宝, George P. Demopoulos. Effects of Temperature on the Preparation of Magnesium Carbonate Hydrates by Reaction of MgCl₂ with Na₂CO₃[J]. CIESC Journal, 2009, 17(4): 661-666.

CHENG Wenting, LI Zhibao1, George P. Demopoulos. Effects of Temperature on the Preparation of Magnesium Carbonate Hydrates by Reaction of MgCl₂ with Na₂CO₃[J]. , 2009, 17(4): 661-666.

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Effects of Temperature on the Preparation of Magnesium Carbonate Hydrates by Reaction of MgCl₂ with Na₂CO₃

Effects of Temperature on the Preparation of Magnesium Carbonate Hydrates by Reaction of MgCl₂ with Na₂CO₃

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