In a size reduction crushing operation, feed size is 100 to 300 mm. while the product size is 10 to 50 mm. This is a case of the _____________ crushing?
Correct answer: B. Secondary
- A. Primary
- B. Secondary
- C. Fine
- D. Ultrafine
Explanation
Primary crushing handles the large run-of-mine feed, while secondary crushing reduces the material further to roughly the 10 to 50 mm range stated here. Therefore this is secondary crushing.
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