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Technical Cement Forum / Regarding addition of dry Fly Ash in Cement grinding process

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rajuram sharma 29/05/2015 12:46:53

Regarding addition of dry Fly Ash in Cement grinding process

Dear All Experts,

I have queries related to addition of Dry Fly Ash in cement grinding process as under:-

Where should we add the Dry Fly Ash in end discharge two chamber Cement mill Inlet or out let?

What are the impacts of addition of Dry Fly Ash in mill inlet or outlet on quality and process parameters?

What are the main criteria to decide about the addition of dry Fly Ash in cement grinding process?

Waiting for your valuable guidance and suggestion regarding the subject matter.

Thanks & Regards,

Ted Krapkat 01/06/2015 06:18:49

Hello Rajuram,

In my experience, dry flyash is normally added to the cement as it enters the cooler (to ensure adequate mixing). This is the cheapest option, however co-grinding of the flyash in the cement mill is becoming increasingly popular due to the mechanical 'activation' of the flyash, which allows for a higher percentage of flyash to be used in the cement.

See;- http://ietd.iipnetwork.org/content/high-activation-grinding

and

http://www.cementdistribution.com/industryinfo/articles/grinding_clinker_replacement_materials.pdf

Regards,

Ted.

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