Influence of CaCl2 on the hydrothermal modification of Mg(OH)2

✍ Scribed by Q.L. Wu; L. Xiang; Y. Jin

• Book ID: 104088474
• Publisher: Elsevier Science
• Year: 2006
• Tongue: English
• Weight: 328 KB
• Volume: 165
• Category: Article
• ISSN: 0032-5910
• DOI: 10.1016/j.powtec.2006.03.023

✦ Synopsis

The influence of CaCl 2 on the hydrothermal modification of Mg(OH) 2 was investigated in this paper. The experimental results indicated that dispersive Mg(OH) 2 hexagonal plates with the regular shape, the enlarged size and the perfect crystallinity were formed by treating the irregular Mg(OH) 2 agglomerates at elevated temperatures in dilute CaCl 2 solutions. Thermodynamic analysis showed that the presence of CaCl 2 at the elevated temperature promoted the formation of MgOH + , which was favorable for the formation of Mg(OH) 6 4-and the growth of Mg(OH) 2 crystals.