The reduction ratio for grinders is defined as (where, Df and Dp are average diameters of feed and product respectively) ?
Correct answer: A. Df/Dp
- A. Df/Dp
- B. Dp/Df
- C. Df - Dp
- D. None of these
Explanation
Reduction ratio measures how many times the average particle size is reduced, so it is the feed diameter divided by the product diameter, Df/Dp. Since grinding makes Dp smaller than Df, this ratio is greater than one.
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