Study on recrystallization of calcium sulphate dihydrate to hemihydrate

被引：0
|
作者：
Kic, Bogumil [1 ]
Grzmil, Barbara [1 ]
Zurek, Olga
机构：
[1] Zachodniopomorski Uniwersytet Technol Szczecinie, Inst Technol Chem Nieorganicznej & Inzynierii Sro, PL-70322 Szczecin, Poland
来源：
PRZEMYSL CHEMICZNY | 2011年 / 90卷 / 05期
关键词：
FLY-ASH; CRYSTALLIZATION; PHOSPHOGYPSUM; LIME;
D O I：
暂无
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Suspended CaSO4 center dot 2H(2)O was recrystd. to CaSO4 center dot 0.5H(2)O (I) in aq. soln. of H3PO4(24-28% by mass of P2O5, 4-8% by mass of SO42-) at 88-92 degrees C for 1-4 h to det. the optimum conditions. The I content in the solid phase increased up to above 90% (conversion degree near to 100%) with the increasing temp., and P2O5 and SO42- contents in the soln.
引用
收藏
页码：813 / 816
页数：4
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