Spray test determines the _____________ of refractories?
Correct answer: B. Resistance to slag penetration
- A. Resistance to CO attack
- B. Resistance to slag penetration
- C. RUL
- D. Permanent linear change
Explanation
The spray test evaluates how readily slag penetrates and attacks a refractory surface. RUL measures softening under load, while permanent linear change measures dimensional change after reheating.
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