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TimePosted
15/09/2022 08:45:30
Junama
says
re Calcination degree
DoC = B/AX1 where B = preheater exit gas from KF, A= Kilnfeed in tons, X1= kilnfeed LOI in decimal.
Preheater matl balance: A= B + C or B= A-C WHERE C= kiln inlet hotmeal.
LOI - FREE MATL BALANCE: A(1-X1) = C(1-X2) OR C/A= (1-X1)/(1-X2) WHERE X2 = kiln inlet hotmeal LOI in decimal.
SUBSTITUTING AND SIMPLIFYING;
DoC = B/AX1=( A-C)/AX1 = (A/AX1) - (C/AX1) =( 1/X1) - ((1-X1)/(1-X2))(1/X1)
Degree of Calcination = (X1-X2)/((X1-(X1)(X2)) (100)
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