re Impact of ALKALY, SULPHURE and CHLORINE in Kiln operation and clinker quality ?

Hello Viswam,

Both high degree of calcination and reducing atmosphere in the kiln inlet can result in buildups in the calciner/kiln inet.

A high degree of calcination means that the temperature in the kiln inlet is probably too high. This may lead to some liquid phase forming in the lower cyclones, smoke chamber and kiln inlet, resulting in blockages and buildups. If the DoC is very high clinker could actually form in the cyclones/smoke chamber.  Such buildups will generally be dark in colour, very hard and contain the same (or just slightly higher) SO3 and alkali content as clinker.

On the other hand, a reducing atmosphere in the kiln inlet will result in rapid formation of lighter coloured, softer, SO3-rich buildups in the calciner/smoke chamber, which often form slabs which regulalry fall into the kiln inlet and temporarily increase clinker free lime, K2O and SO3 as they pass out of the kiln with the clinker.

Regards,

Ted.

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re Impact of ALKALY, SULPHURE and CHLORINE in Kiln operation and clinker quality ?

Thank you sir

I need one more suggestion from you.

we are using 100 % pet coke as fuel

we have a PID control loop,  calciner coal firing and PC temp ( centre of the M Duct )

during kiln disturbences  coal variation is higher side due to PC temp variations.                                                             

Any other temp which is looped with calciner firing is better.

Need suggestion.

regards

msv

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re Impact of ALKALY, SULPHURE and CHLORINE in Kiln operation and clinker quality ?

Hello Viswam,

Unfortunately, control systems are not my area of expertise, I'm sorry. Maybe there are other experts in this forum who could answer your question.

Regards,

Ted.

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re Impact of ALKALY, SULPHURE and CHLORINE in Kiln operation and clinker quality ?

Thanks.

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