Rotary driers are generally made of_______________?
Correct answer: C. Mild steel
- A. Cast iron
- B. High silicon iron (14% Si)
- C. Mild steel
- D. Tin lined with refractory bricks
Explanation
Rotary dryers are commonly fabricated from mild steel because it is strong, readily available, weldable, and economical. Special linings or alloys are selected only when severe corrosion or high-temperature conditions demand them.
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