low sr slurry

Can someone tell me what are the implications of running a very low raw meal SR (1.8%) from a KILN OPERATION and a CEMENT QUALITY point of view please?

We current run a SR of 2.00% and have no problems.

Thank you.

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re low sr slurry

Hello Stephen,

What is the SR of your clinker?

Since clinker SR is inversely related to quantity of liquid phase, a drop in SR would be accompanied by an increase in the amount of liquid phase in the burning zone. But I doubt that change of SR from 2.0 to 1.8 in the raw meal would have a significant effect.

From a quality perspective, the clinker SR determines the potential to form calcium silicates (ie C3S + C2S). So a drop in SR normally equates to a drop in clinker C3S + C2S content. But again the change you are proposing is so small that you may not see any effect on silicate mineral content.

Regards,

Ted.

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re low sr slurry

If adding the extra silica to the raw mix also brings some impurities, then you may perhaps see some different repercussions from changed volatile cycles in the kiln, or minor changes to cement quality resulting from the impurities.

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