Logan Oplinger on thu 22 mar 01
Analyses of one company's castables can be found at:
http://www.thermalceramics.com/home.html
These includes both dense and insulating varieties.
These all have varying amounts of iron in them. Note also the CaO and SiO2 are lower, and Al2O3 is higher in percentage than for white cement.
Logan Oplinger
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