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Technical Cement Forum / Alkali and Jamming

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Dastgir 27/01/2010 14:27:21

Alkali and Jamming

Dear All,

A coating sample, from the severely jammed smoke chamber , was analysed

and following prominent results obtained -

%Na2O = 0.52

%K2O = 3.52

%Cl = 0.05

%SO3 = 1.65

These results suggests high K2SO4 in sample? Am I write?

If it is true, then i want to ask another question, how it possible, because K2SO4

is always carried with clinker.

I also like to solicit your comments on the nature of his coating.The coating was

really very hard.

Kind Regards,

Gulam Dastgir

M.Azhar 29/01/2010 16:26:02

Hello Mr Gulam Dastgir

Choking in the smok chamber is due to the Na and K chlorides and high temperature but K2SO4 remains with the blocked material thats why K2SO4 analysed in the coating

Dastgir 29/01/2010 16:36:42

Dear Azhar,

I am sorry, but i don't get what you to clarify?

What i know is that K2SO4 generally does not circulate up to smoke chamber as the

case is with alkali chlorides and Na2SO4.

Contrary to this, the K2SO4 in smoke chamber is abnormally on higher side.

This is what I am confused about.

Kind Regards,

Gulam Dastgir

M.Azhar 29/01/2010 17:03:52

Im trying say that blocking in the smoke chamber is due to the saturation of Chlorides and the Na-Sulfate, ones the chamber start to blocked , meal accumulating in that area and that meal contain the Ka-sulfate so your are getting Ka-sulfate in the analysis , and more hardens of the blocked material is due to the high amount of heat

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