The constants (Kb, Kr and Kk) used in the laws of crushing (i.e., Bond's law, Rittinger's law and Kick's law) depend upon the (A) Feed material (B) Type of crushing machine (C) Both (A) & (B) (D) Neither (A) nor (B)

The constants (Kb, Kr and Kk) used in the laws of crushing (i.e.,
Bond's law, Rittinger's law and Kick's law) depend upon the
(A) Feed material
(B) Type of crushing machine
(C) Both (A) & (B)
(D) Neither (A) nor (B)
by

1 Answer

Answer :

(C) Both (A) & (B)
by

Related questions

Which of the following crushing laws is most accurately applicable to the fine grinding of materials? (A) Bond's crushing law (B) Kick's law (C) Rittinger's law (D) None of these

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Last Answer : (C) Rittinger's law

Rittinger's crushing law states that (A) Work required to form a particle of any size is proportional to the square of the surface to volume ratio of the product (B) Work required to form a particle of a particular size is proportional to the square root of the surface to volume ratio of the product (C) Work required in crushing is proportional to the new surface created (D) For a given machine and feed, crushing efficiency is dependent on the size of the feed & product

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Last Answer : (C) Work required in crushing is proportional to the new surface created

. Which of the following equations is Rittinger's crushing law? (Where P = power required by the machine, m = feed rate, k = a constant, Ds̅a & D̅sb = volume surface mean diameter of feed & product respectively.) (A) P/m = K/ √Dp (B) P/m = K . ln D̅sa /D̅sb (C) P/m = K . (1/ D̅sb - 1/Ds̅a ) (D) None of these

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Which of the following gives the work required for size reduction of coal to -200 mesh in a ball mill most accurately? (A) Rittinger's law (B) Kick's law (C) Bond's law (D) None of these

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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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For crushing of solids, the Rittinger's law states that the work required for crushing is proportional to(A) The new surface created(B) The size reduction ratio(C) The change in volume due to crushing(D) None of these

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Which of the following gives the crushing energy required to create new surface ? (A) Taggarts rule (B) Fick's law (C) Rittinger's Law (D) None of these

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The heat capacities for the ideal gas state depend upon the (A) Pressure (B) Temperature (C) Both (A) & (B) (D) Neither (A) nor (B)

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General crushing equation is given by d(P/m) = -K (dD̅S /D̅ n S ). Bond's crushing law is obtained by solving this equation for n = __________ and feed of infinite size. (A) 1 (B) 1.5 (C) 2 (D) 2.5

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Width and speed of a conveyor belt depends upon the __________ of the material. (A) Lump size (B) Bulk density (C) Both (A) & (B) (D) Neither (A) nor (B

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The work index in Bond's law for crushing of solids has the following dimensions (A) No units (dimensionless) (B) kWh/ton (C) kW/ton (D) kWh.m1/2 /ton

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Which of the following laws validates the statement that matter can neither be created nor destroyed? (1) Law of conservation of energy (2) Le Chatelier's Principle (3) Law of conservation of mass (4) Law of osmosis

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According to Bond crushing law, the work required to form particle of size 'D' from very large feed is (where (S/V)p and (S/V) f are surface to volume ratio of the product and feed respectively). (A) (S/V)p (B) √(S/V)p (C) (S/V) 2 p (D) (S/V) f

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When an R&D effort started in 2001 completes on September 15, 2002, the product revision kicks in a. October 1, 2002. b. immediately upon completion. c. January 1, 2003. d. R&D has no effect on product revisions. e. September 15, 2003.

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