Affiliation:
1. East China University of Science and Technology
2. Tsinghua University
Abstract
Magnesium chloride hexammoniate (MgCl2·6NH3) is an intermediate product for preparation anhydrous magnesium chloride by reaction crystallization method. An experiment study of a semi-batch reaction crystallization is presented. In a single feed operation, magnesium chloride solution is fed to a stirred methanol solution mixed with ammonia to crystallize magnesium chloride hexammoniate. The median crystal size of product increases with increasing stirring rate, reaches a maximum, and then decreases again. Decreasing feed rate or decreasing stirring time increases the crystal size significantly. The reaction temperature and concentration of magnesium ion can also influence the crystal size distribution (CSD). A double feed operation can create larger crystal size than that of single feed operation. The relationship between crystal size and the content of water of the product is discussed.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
Reference12 articles.
1. Georges J. Kipouros, Donald R. Sadoway, Journal of Light Metals, 2001(1), p.111.
2. Peacey John G ; Kennedy Mark W ; Walker Thomas P, US5565080, (1995).
3. Amundsen Ketil, Eklund Hans Ragnar, SchmidtRalf, U.S. Patent 6, 042, 794, (2000).
4. Sivilotti Olivo Giuseppe; Sang Jean Victor; Lemay Rejean, WO9422763, (1994).
5. Baldyga, J.; Podgorska, W.; Pohorecki, R. Chem. Eng. Sci., 50(8)(1995), p.1281.
Cited by
4 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献