Influence of different admixtures on the crystallization of calcium sulfate crystals

被引：2
|
作者：
Al-Sabbagh, A [1 ]
Widua, J [1 ]
Offermann, H [1 ]
机构：
[1] Rhein Westfal TH Aachen, Inst Verfahrenstech, D-52056 Aachen, Germany
来源：
CHEMICAL ENGINEERING COMMUNICATIONS | 1996年 / 154卷
关键词：
additives; foaming; crystallization; calcium sulfate; admixtures; crystal modification;
D O I：
10.1080/00986449608936649
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
In the present study several defoaming agents were investigated in a batch-crystallizer with respect to their effectiveness on habit modification and filterability of gypsum crystals. The application of some agents in an horizontal tube falling film evaporator is discussed. Furthermore, the recrystallization kinetics of gypsum to anhydrite in the presence of sodium chloride at 95 degrees C are presented.
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页码：133 / 145
页数：13
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