What is the approximate ratio of roasted ore, coke and lime stone respectively in the charge to be added…

What is the approximate ratio of roasted ore, coke and lime stone respectively in the charge to be added into blast furnace for extraction of iron?
  1. $5: 12: 3$
  2. $12: 3: 5$
  3. $12: 5: 3$
  4. $5: 3: 12$

Solution

"The ratio of roasted ore, coke and limestone fed into the blast furnace in the manufacture of iron is 12:5:3. This mixture is known as charge."

Asked in: MHT CET 2020 (14 Oct Shift 2)

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