Rittinger's law states that work required in crushing is proportional to the new surface created. In other words, crushing efficiency is constant and for a given machine and feed material is independent of the sizes of feed and product. Rittinger’s law is written as-
P/ ṁ = Kr(1/Dsb – 1/Dsa)
Kick proposed another law based on stress analysis of plastic deformation within the elastic limit, which states that the work required for crushing a given mass of material is constant for the same reduction ratio, that ia, the ration of the initial particle size to the final particle size. This leads to the relation
P/ ṁ = Kk ln(Dsa/Dsb)
No comments:
Post a Comment