Re-engineered Calcium Aluminate Cement for Refractory Castables

M. Schmid, R. Kaden, G. Walenta

Calucem GmbH, 68219 Mannheim/Germany


Volume 10, Issue 3, Pages 69 - 76


The effect of Calcium Aluminate Cement (CAC) fneness and mineralogy on workability and high temperature performance of two commercial available CAC was investigated. A medium CAC with low C A content and a high specifc surface area leads to improved fow and higher strength after fring a regular cement castable with fire-clay. A higher specifc surface of the CAC enhances sintering of the calcium aluminates with the freclay aggregates. Improved refractory castable properties of the fine ground CAC can be attributed to a higher crystalline phase content and increased hibonite formation at high temperatures.


calcium aluminate cement, hibonite formation


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