What is the usual value of angle of nip for crushing of ordinary rock in smooth steel crushing rolls? (A) 16° (B) 32° (C) 40° (D) 46°

What is the usual value of angle of nip for crushing of ordinary rock in
smooth steel crushing rolls?
(A) 16°
(B) 32°
(C) 40°
(D) 46°
by

1 Answer

Answer :

(B) 32°
by

Related questions

The value of 'angle of nip' is generally about (A) 16° (B) 32° (C) 52° (D) 64

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Last Answer : (B) 32

Half the angle of nip, (α), for a roll crusher is given by (where, dr, dp and df are diameters of crushing rolls, feed particles and rolls gap respectively). (A) cos α = (dr + dp)/(dr + df) (B) cos α = (dr + df)/(dr + dp) (C) tan α = (dr + dp)/(dr + df) (D) sin α = (dr + dp)/(dr + df)

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Last Answer : (A) cos α = (dr + dp)/(dr + df)

Angle of nip of the crushing rolls does not depend upon the (A) Diameter of the rolls (B) Speed of the rolls (C) Product size (D) Feed size

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