Limestone is added in the blast furnace (during pig iron manufacture) to______________________?
Correct answer: B. Form slag by combining with impurities
- A. Supply heat by undergoing exothermic reaction with impurities
- B. Form slag by combining with impurities
- C. Reduce the coke consumption
- D. Reduce slag viscosity
Explanation
Limestone decomposes to lime in the furnace, and the lime combines with silica and other gangue impurities to form slag. It acts as a flux rather than as the main heat source or reducing agent.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
Practise Chemical Process Principles
2,710 free Chemical Process Principles MCQs from Chemical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemical Engineering questions like this
Chemical Engineering is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Chemical Process Principles questions
The boiling & freezing points on a newly defined temperature scale in degree 'D' are 400°D & 100°D respectively. The temperature reading corresponding to 60°C on this new temperature scale will be equal to _____________ °D ?
Cementite is in the lamellar form in the _____________________ phase of steel ?
Brazing is the joining of metals_____________________?
Which of the following metals cannot be hot worked at room temperature ?
Corrosion is____________________?
Silicon in steel__________________?