Question 19Steam Plants - 1st Asst/Chief
70% to passWhich of the listed refractory materials is composed of wool fibers and clay binders?
AInsulating cement
BCastable fireclay
CChrome castable ore
DAll of the above
AI Explanation
The correct answer is A) Insulating cement. Insulating cement is composed of wool fibers and clay binders, which make it a refractory material suitable for high-temperature applications. The wool fibers provide insulation and the clay binders help hold the material together. The other options are not correct because: B) Castable fireclay is composed of refractory clay and aggregates, without the wool fiber component. C) Chrome castable ore is a refractory material made from chromite ore, not wool fibers and clay. D) "All of the above" is incorrect, as only option A) accurately describes the composition of insulating cement.
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