Question 279Steam Plants - 1st Asst/Chief
70% to passWhich of the listed refractory materials can be used in an area directly exposed to the highest heat in the furnace?
ABaffle mix
BInsulating block
CInsulating brick
DFirebrick
AI Explanation
The correct answer is D) Firebrick. Firebrick is a type of refractory material that can withstand the highest temperatures in a furnace, typically between 1,500°F and 3,000°F. This makes it the ideal choice for areas directly exposed to the highest heat in the furnace, such as the firebox or combustion chamber. Firebrick is a specialized type of brick designed to resist high temperatures, thermal shock, and chemical reactions that occur in a furnace environment. The other options, such as baffle mix, insulating block, and insulating brick, are not suitable for use in the highest heat areas of a furnace as they cannot withstand the extreme temperatures and may deteriorate or become damaged.
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