FLUXING REACTIONS OF SULFATE AND CARBONATES IN CEMENT CLINKERING .1. SYSTEMS CASO4-K2SO4 AND K2SO4-CACO3

被引：8

作者：

ARCEO, HB ^{[1
]}

GLASSER, FP ^{[1
]}

机构：

[1] UNIV ABERDEEN,DEPT CHEM,MESTON BLDG,MESTON WALK,ABERDEEN AB9 2UE,SCOTLAND

来源：

CEMENT AND CONCRETE RESEARCH | 1990年 / 20卷 / 06期

关键词：

D O I：

10.1016/0008-8846(90)90047-2

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Phase equilibria and thermodynamics have been used to determine compatabilities in the systems CaSO4-K2SO4 and K2SO4-CaCO3. In the CaSO4-K2SO4 system, a polymorphic inversion at 200°C is encountered in K2Ca2(SO4)3. Thermodynamic calculation of the reciprocal salt system K2SO4-CaCO3-CaSO4-K2CO3 discloses that the join K2SO4-CaCO3 constitutes a stable binary: experiments in flowing CO2 at 1 bar pressure confirm this. A noteworthy feature of the system is the solid solution of CaCO3 in K2SO4, reaching ∼20% mol % CaCO3. The eutectic, located at 880°C and 43 mol % CaCO3, is attainable without significant decomposition. The possible consequences to clinkering reactions are discussed. © 1990.

引用

页码：862 / 868

页数：7

共 9 条

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