Category: Furnace Technology

A. Type of fuels viz. solid, liquid or gaseous
B. Flue gas temperature
C. Emissivity of refractory walls
D. Initial temperature of the charged stock

A. Glass
B. Stainless steel
C. Potteries
D. Refractory bricks

A. Economiser
B. Steam superheater
C. Air preheater
D. All A., B. and C.

A. Before the I.D fan
B. After the I.D. fan
C. Near the top of the chimney
D. Anywhere after the I.D. fan

A. Ostwald chart
B. Cox chart
C. Sankey diagram
D. None of these

A. Reduces the flue gas temperature and makes the furnace atmosphere oxidising
B. Increases the load on the induced draft fan
C. Reduces the furnace draught
D. All A., B. and C.

A. Retards the heat transfer
B. Assists in temperature equalisation in the charge
C. Permits the use of controlled atmosphere for the protection of stock
D. All A., B. and C.

A. Waste heat recovery from flue gas
B. Minimising heat losses from furnace walls
C. Maintaining proper draught
D. All A., B. and C.

A. Muffle furnace
B. Annealing furnace
C. Reheating furnace
D. Rotary kiln

A. Speed of the fan
B. Damper
C. Variation in the pitch of fan blades
D. All A., B. and C.