Rotary cement kiln is built by refractory materials such as magnesia chrome bricks, magnesia spinel bricks, dolomite bricks, silica mullite bricks, abrasion resistant castable, kilneye castable and so on. To make good kiln coating is just the first step for long term and safe operation of cement kiln. More important measure that should be taken is to well protect kiln coating, because it is the basis of high quality and high yield production, safe operation and prolonged service life. Here are some suggestions which may help prolong cement kiln coating life.
Test and make reasonable operation parameters, control a stable kiln thermal regulation to promise the kiln has a operation rate over 85%.
Strengthen calcining control, avoiding drastic firing, top firing, over-firing molten flow or under-sintering raw material is definitely prohibited, make sure clinker has a fine and even granularity.
Accompanied with continuous increase of yield, burning tip structure should be improved to keep good flame shape and to avoid rinsing kiln coating. Moreover, burning tip position should also be adjusted accordingly to make evener high temperature zone, which is advantageous for the adhesion of kiln coating.
When any kiln coating damage is found, you should take measures in time to patch it. During sintering, you should timely inspect the flame and timely adjust the temperature to make sure the flame is in medium level. If the fire is big, the kiln coating will not be firm, if the fire even bigger, the situation will continuously deteriorate, both cases should be avoided.
Timely process the formed accretion in the rotary kiln, keep it in a needed height to promise huge bocks to successfully rolls out the kiln, thus avoid abrading or damage the kiln coating. Try the best to avoid agglomeration or agglomerate as little as possible.
The raw material should be properly prepared in a suitable ratio to ensure easy sintering, no blocking, convenient for the adhesion or kiln coating and operation control.
Increase equipment maintenance frequency, do your best to decrease kiln slow-down times, which will prevent the kiln lining spall caused by cooling and heating to the largest content.
Strictly prohibit curtailing the flame when there is accretion, which will do damage to the kiln coating.
