For efficient performance of a blast furnace, the extent of reduction of Wustite (FeO) should be___________________?
Correct answer: C. 50-60% indirect reduction
- A. 100% indirect reduction
- B. 100% direct reduction
- C. 50-60% indirect reduction
- D. 30-40% indirect reduction
Explanation
About 50 to 60% of wustite reduction should occur indirectly by CO, because indirect reduction saves coke and improves blast-furnace efficiency. Excessive direct reduction requires more carbon and heat inside the furnace.
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