239 posts
FINE CLINKER & REDUCTION IN PRODUCTION
WE HAVE 5 STAGE SLC FLS KILN WITH GRATE COOLER . WE ARE USING PETROCOKE & INDIAN COAL (65 & 35 % RATIO) IN KILN & PC FIRING. ALTHOUGH WE HAVE SATISFACTORILY OPERATED THE PLANT MANY DAYS WITH 80% PETCOKE % 20 % INDIAN WITHOUT PRODUCTION REDUCTION. BUT NOW EVEN WITH LOW PETCOKE % WE HAVE VERY FINE CLINKER & WHICH RESULTS IN REDUCTION IN PRODUCTION. PREHEATER CHOKING PROBLEM IS NOT MUCH . PLEASE DO TELL ME A SOLUTION FOR THE SAME. SULFUR IN COAL MIX IS 3.5% & IN CLINKER 1.0 % . RAW MIX LSF IS 93-94 % , SM IS 2.32 LIQUID VALUE IS 27-28 % KILN BECOMES DUSTY , WE CAN NOT SEE THE KILN INSIDE DURING OPERATION DUE TO DUST RECIRCULATION FROM COOLER DUE TO FINES. PLEASE SUGGEST A SOLUTION IN THE EXISTING SYSTEM . WE HAVE UNIFLOW BURNER RAJ
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16 posts
Re: FINE CLINKER & REDUCTION IN PRODUCTION
Could be a sulphur problem. Sulphur affects the melt viscosity and tends to make the clinker more dusty. What is the SO3 in the hotmeal going to the kiln?
A heavy dustload from the cooler will also inhibit nodule formation. When and if you locate the root of the problem, the quickest way to break the evil cycle is usually to decrease production for some hours to reduce gas velocity in the kiln hood and (if possible) to reduce the airflow to the grate.