Paper Title:
Preparation of Anhydrous Magnesium Chloride from Bischofite (MgCl2·6H2O) I. Reaction Crystallization of Magnesium Chloride Hexammoniate
  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.

  Info
Periodical
Materials Science Forum (Volumes 488-489)
Edited by
W.Ke, E.H.Han, Y.F.Han, K.Kainer and A.A.Luo
Pages
57-60
DOI
10.4028/www.scientific.net/MSF.488-489.57
Citation
X. T. Wang, J. H. Zhao, X. F. Song, J. Wang, J. G. Yu, "Preparation of Anhydrous Magnesium Chloride from Bischofite (MgCl2·6H2O) I. Reaction Crystallization of Magnesium Chloride Hexammoniate", Materials Science Forum, Vols. 488-489, pp. 57-60, 2005
Online since
July 2005
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Yan Ding, Jun Ping Meng, Xu Hong Zhang, Li Juan Wang, Qing Guo Tang
Abstract:Multiple copper-zinc alloy was used to treat water in order to restrict the formation of hard scale during heating process. Trace amounts of...
35
Authors: Xin Huan Niu, Bai Mei Tan, Xiao Hong Zhao, Wei Lian Zhang
Abstract:Silicon-Germanium (SiGe) single crystal is a fully miscible solid solution with diamond-base, and has attracted keen interest as material for...
139
Authors: Xia Wang, Ming Qing Xing
Chapter 12: Materials and its Applications
Abstract:Large single crystal of Na2Ni (SO4)2.4H2O (NNSH) was grown for the first time using method of isothermal decrease of supersaturation. The...
1735
Authors: Koji Inaka, Hiroaki Tanaka, Sachiko Takahashi, Satoshi Sano, Masaru Sato, Masateru Shirakawa, Yoshinori Yoshimura
Chapter 10: High and Micro Gravity Materials Science
Abstract:t is believed that a microgravity environment may maintain ideal depletion zones of protein (PDZ) and impurity (IDZ) around growing crystals...
565
Authors: Fei Lu
Chapter 5: Materials Science and Technology, Material Manufacturing Processes
Abstract:In the present study, we demonstrate that silver colloid can serve as additive and induced the γ-form polymorph of glycine crystals in the...
1344