GATE MT · 2026 · MT
Question 63: Iron and steel making
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Question 63
MTNAT2 marksNeeds review
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.
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2026MT
GATE MT 2026 · Paper 1
Metallurgical Engineering · Original paper archive
- Section
- Metallurgical Engineering
- Question type
- Numerical answer (NAT)
- Marks
- 2 marks
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