A. Calcination of limestone & dolomite
B. Cement manufacture
C. Both A. and B.
D. Neither A. nor B.
Rotary kilns are used in the____________________? Read More »
Furnace Technology A. 2000
B. 3000
C. 4500
D. 6000
A. Same
B. Less
C. More
D. Either more or less; depends on the flue gas density
A. Waste heat recovery from flue gas
B. Minimising heat losses from furnace walls
C. Maintaining proper draught
D. All A., B. and C.
Thermal efficiency of furnaces can be improved by____________________? Read More »
Furnace Technology A. Fusion of coal ash & clinker formation
B. C. V. of producer gas
C. Temperature of producer gas
D. Tar content in producer gas
A. Ostwald chart
B. Cox chart
C. Sankey diagram
D. None of these
A. Accelerating the rate of scaling
B. Causing metal embrittlement
C. Attacking the grain boundaries; particularly severe on low carbon and nickel bearing steels at
high temperature
D. All A., B. and C.
Presence of SO2 in furnace gases attacks the ferrous metal by way of_________________? Read More »
Furnace Technology A. Coke ovens
B. Open hearth furnace
C. Both A. & B.
D. Neither A. nor B.
Regenerators are installed in_______________? Read More »
Furnace Technology A. Smelting
B. Calcining
C. Roasting
D. All A., B. and C.
Shaft furnaces are used for_______________________? Read More »
Furnace Technology A. Ingots
B. Slabs
C. Steel coils
D. Steel sheets
Reheating furnace (pusher type) is used for heating_____________________? Read More »
Furnace Technology