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Prediction of axial velocity profiles and solids hold‐up in a rotary kiln
Author(s) -
Sai P. S. T.,
Surender G. D.,
Damodaran A. D.
Publication year - 1992
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.5450700305
Subject(s) - rotary kiln , rotational speed , kiln , mechanics , residence time (fluid dynamics) , steady state (chemistry) , transient (computer programming) , materials science , environmental science , chemistry , geology , geotechnical engineering , physics , engineering , mechanical engineering , metallurgy , computer science , operating system
Axial bed depth profiles were experimentally measured in a rotary kiln containing ilmenite particles under steady state and transient conditions. The variables include feed rate of solids, inclination and rotational speed of the kiln. and dam height. The variation of the axial velocity with kiln axis was estimated. The semi‐experimental model proposed by Perron and Bui (1990) was modified to include the effect of the variables of the present study. The mean residence time of solids was estimated from the fractional hold‐up and expressed in terms of the process variables. The transients induced by a step change in any of the operating conditions were measured as variation of discharge rate of solids with time.