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Which of the following forces acts in attrition mill?

(a) Impact and crush

(b) Compression and impact

(c) Shear and crush

(d) Tear and impact

This question was posed to me during an online interview.

This key question is from Size Reduction in section Size Reduction of Food Processing Unit Operations

1 Answer

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Best answer
Right choice is (c) Shear and crush

Explanation: It is also known as burr mill. Grains are rubbed between the grooved flat faces of rotating circular disks where one plate is stationary and fixed with the body of the mill while the other one is rotating disk. Material is fed between the plates and is reduced by crushing and shear.

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