Question 19Steam Plants - 1st Asst/Chief70% to pass
Which of the listed refractory materials is composed of wool fibers and clay binders?
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.
Related Questions
#17 Which of the listed refractory materials can be used in an area directly exposed to the highest heat in the furnace? #18 When heated, brickwork in a boiler is kept from buckling by the installation of _______________.#20 According to the illustration of a typical boiler furnace rear wall, which item number would best represent "insulating block"? Illustration SG-0003 #21 Boiler refractory firebrick is secured to the casing by _______________.#22 Boiler refractory previously baked out and fired is most sensitive to _______________.