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in Food Processing Unit Operations by (110k points)
What is the working principle of ball mill?

(a) Impact and attrition

(b) Compression and attrition

(c) Shear and compression

(d) Tear and impact

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I'd like to ask this question from Size Reduction in portion Size Reduction of Food Processing Unit Operations

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The correct answer is (a) Impact and attrition

To elaborate: Ball mill works on the principle of impact and attrition. Size reduction is done by impact as the balls drop from near the top of the shell. A ball mill consists of a hollow cylindrical shell rotating about its axis.

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