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Breakage rates of lignite particles during hydraulic transport
Author(s) -
Shook C.A.,
Haas D.B.,
Husband W.H.W.,
Small M.
Publication year - 1978
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450560403
Subject(s) - breakage , grinding , mechanics , particle (ecology) , ball mill , materials science , range (aeronautics) , mill , comminution , particle size , geotechnical engineering , composite material , metallurgy , geology , physics , engineering , mechanical engineering , chemical engineering , oceanography
Experiments conducted with recirculating test loops show that the rate equations for rod and ball mill grinding can be applied to the changes induced by pumping. Selection rate constants in the range considered were found to be rather insensitive to particle size but strongly time dependent. This time dependence can be attributed to changes in particle shape dominating over fracture as a degradation mechanism. Pump construction and speed appeared to be of considerable importance in determining breakage rates.