Which of the following size reduction equipments employs mainly attrition for ultrafine grinding?

Which of the following size reduction equipments employs mainly attri

1.	Which of the following size reduction equipments employs mainly attrition for ultrafine grinding?
A.	Jet mills
B.	Fluid energy mill
C.	Micronizer
D.	All of the above
Answer» E.

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Which of the following size reduction equipments employs mainly attrition for ultrafine grinding?

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