Related Questions

Which is the main reducing agent during production of iron from iron ore in a blast furnace?
An iron blast furnace produces hot metal containing 95% Fe. The iron ore charged into the furnace contains 95% Fe2O3 and the rest is gangue. Assume that all the iron in the ore goes to hot metal. The amount of iron ore (in kg) required for producing 1000 kg of hot metal is (Atomic weight of Fe = 56 g mol-1 and that of Fe2O3 = 160 g mol-1)
In the blast furnace, as the oxygen percentage in air blast increases, the
P. flame temperature increases
Q. blast volume increases
R. blast volume decreases
S. flame temperature decreases
In an ideal blast furnace, the input and output are as follows:
Input:
Ore, Pure Fe2O3, no gaunge : 1357kg/THM∗
Coke, Pure C, no ash : 400 kg/THM
Blast air, dry : O2 : 293 kg/HTM, N2 : 964 KG/THM
Flux : nil
Output :
Hot metal : 5wt% C, rest iron
Slag : nil
Top gas : CO, CO2, N2
∗ THM refers ton of hot metal (liquid pig iron) ; Atomic weights: C-12, O-16, Fe-56 The amount of oxygen in CO & CO2 leaving with the top gas is . . . . . . . . kg.
Grey pig is produced when the blast furnace is not provided with sufficient fuel while the white pig is produced when the blast furnace is provided sufficiently with fuel.
Temperature of blast furnace gas emanating from blast furnace is about . . . . . . . . degree C
Explosion limit of blast furnace gas is 37 to 71% gas in gas-air mixture. It means that the blast furnace gas will explode when burnt in a confined space, if its concentration in the gas-air mixture is __________ percent.
Humidification of the blast in the iron blast furnace leads to
Hot blast main (carrying air at 1000°C) in blast furnace are lined with __________ bricks.
The fuel mostly used in blast furnace for extracting pig iron from iron ores is