Fireclay refractories____________________?
Correct answer: E. All A., B. and C.
- A. Are not resistant to the action of basic slags
- B. Combine with salts (e.g. chlorides sulphates etc.) & bases (e.g. lime, magnesia etc.) forming
- C. fusible aluminates silicates etc
- D. Shrink during firing
- E. All A., B. and C.
Explanation
Fireclay is an alumino-silicate acidic refractory, so basic slags and alkaline salts can form low-melting compounds with it. It also undergoes shrinkage during firing, making all three statements valid.
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