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Fatigue Analysis of Particle Attrition in a Rotating Drum
Author(s) -
Grant Evgeny,
Kalman Haim
Publication year - 2001
Publication title -
particle and particle systems characterization
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.877
H-Index - 56
eISSN - 1521-4117
pISSN - 0934-0866
DOI - 10.1002/1521-4117(200107)18:2<64::aid-ppsc64>3.0.co;2-3
Subject(s) - drum , attrition , rod , materials science , comminution , friability , particle (ecology) , particle size , composite material , metallurgy , forensic engineering , mechanical engineering , engineering , dentistry , geology , medicine , oceanography , alternative medicine , pathology , chemical engineering , ethyl cellulose , polymer
Rotating drums are commonly used as grinders by inserting balls or rods into the drum. They are also employed as a standard measurement device for attrition and friability, mainly in the pharmaceutical industry. This paper presents a phenomenological study of the behavior of rotating drums and the fatigue phenomenon. A sensitivity test showed that for potash the drum should rotate at 30 rpm and the sample weight should be 100 g, so as to maximize the attrition rate. Further experimentation showed that the crush strength of the surviving particles changes significantly during the test owing to fatigue.