Metallurgical Engineering > GATE 2026 > Blast Furnace Mass Balance
A blast furnace produces hot metal with the following composition:
4 wt.% C, 1.5 wt.% Si, and rest Fe.
Only input of iron is through iron ore containing 85 wt.% Fe2O3 and 15 wt.% gangue consisting of SiO2 and Al2O3.
2% of all iron (by weight) is lost in slag.
The amount of ore used to produce 1000 kg of hot metal (rounded off to one decimal place) is _________________ kg.
Given: Atomic weights of Fe and O are 56 g/mol and 16 g/mol, respectively.
4 wt.% C, 1.5 wt.% Si, and rest Fe.
Only input of iron is through iron ore containing 85 wt.% Fe2O3 and 15 wt.% gangue consisting of SiO2 and Al2O3.
2% of all iron (by weight) is lost in slag.
The amount of ore used to produce 1000 kg of hot metal (rounded off to one decimal place) is _________________ kg.
Given: Atomic weights of Fe and O are 56 g/mol and 16 g/mol, respectively.
Correct : 1620.6
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