RING OR COATING INSIDE KILN

DEAR ALL

WE HAVE A KILN OF 2.6 * 37 M WHICH IS VERY SMALL. WE HAVE FREQUENT PROBLEMS OF KILN RING FORMATION INSIDE AROUND 15 TO 20 METERS INSIDE FROM DISCHARGE END. WE MAINTAIN VERY LOQ LIQUID 25% , WITH 100% PETCOKE FIRING , PETCOKE 4-5% RETENTION ON 90 MIC. , RAW MEAL FINENESS 18-20% ON 90 MIC.

WHAT IS THE POSSIBLE SOLUTION DURING RUNNING & WHAT IS THE BASIC CAUSE OF THE SAME ? HOW TO ELEMINATE THIS RING /COATING FORMATION?

AS RING BUILDS UP EVEN AFTER CLEANING AT KILN INLET THE DRAFT OF INLET DOES NOT REDUCES . WE ALSO HAVE BYPASS WHICH IS RUN FULL.

OUR FEED REDUCES TO 30 FRON 55 TPH . OUR IS ILC KILN .

PEOPLE SAY TAHT IT IS DUE TO HIGH ALKALI, SULFUR & CHLORIDES BUT AS FAR AS I KNOW THE ALKALIES HELP IN SULFUR DILUTION THAT HOW IT CAN BE SULFUR PROBLEM OR ALKALI PROBLEM?

IF I AM GONNA TO ANALYSE BY CHEMICAL TESTING PLEASE TELL ME WHAT ARE THE CHEMICAL COMPOSITIONS TO  BE CONSIDERED IN THE MATERIAL OF RING , HOT MEAL , BYPASS , COAL ETC. WHAT ARE THE LIMITS FOR THE PARAMETERS ?

ALTHOUGH WE OPERATE THE KILN WITH BYPASS BUT HOW CAN I MONITOR THE PERFORMANCE OF BYPASS BY CHEMICAL ANALYSIS OF VOLATILES PRESENT IN HOT MEAL & IN BYPASS?

PLEASE DO SUGGEST.

THANKS

ENGR

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