250+ TOP MCQs on Pulverised Mills – 1 and Answers
5. What is the pulverization capacity of the ball mill? A. 10 tons of coal per hour B. 20 tons of coal per hour C. 50 tons of coal per hour D. 80 tons of coal per hour. Answer: A clarification: A ball has the capacity of pulverizing 10 tons of coal per hour containing 4% of moisture requires 28 tons of steel balls and consumes 20 to 25 KW hr ...