Furnace Technology Protective gas used in the annealing furnace for steel coil comprises of 5% H₂ + 9% N₂ 100 %H₂ 95% N₂ + 5% H₂ 100% CO 5% H₂ + 9% N₂ 100 %H₂ 95% N₂ + 5% H₂ 100% CO ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Shaft furnaces are used for All of these Roasting Smelting Calcining All of these Roasting Smelting Calcining ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology To reduce the stack loss, heat recovery from flue gas can be done by Preheating of combustion air All of these Preheating of cold stock Steam generation in waste heat boilers Preheating of combustion air All of these Preheating of cold stock Steam generation in waste heat boilers ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Ceramic recuperators compared to metallic recuperators for the same duty Have higher pressure differential between flue gas & air side Are lighter Are less costly Occupy more space Have higher pressure differential between flue gas & air side Are lighter Are less costly Occupy more space ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Reheating furnace (pusher type) is used for heating Steel coils Slabs Steel sheets Ingots Steel coils Slabs Steel sheets Ingots ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology The thermal efficiency of an air/fuel gas preheating recuperator may be as high as __________ percent. 99 50 65 85 99 50 65 85 ANSWER DOWNLOAD EXAMIANS APP
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