Rate of slag attack on refractories increases with rise in temperature due to the___________________?
Correct answer: A. Decreased viscosity of slag
- A. Decreased viscosity of slag
- B. Increased thermal conductivity of brick
- C. Oxidising condition in the furnace
- D. None of these
Explanation
Heating lowers the viscosity of molten slag, allowing it to flow, penetrate pores and react with the refractory more readily. The other listed effects are not the principal general reason for the increased attack rate.
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