Utilization of Municipal Sludge in the Calcination of Cement Clinker

Qi Gang Zhao; Zuo-Ren Nie; Hong Liu; Su Ping Cui; Ya Li Wang

doi:10.4028/www.scientific.net/MSF.814.546

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HomeMaterials Science ForumMaterials Science Forum Vol. 814Utilization of Municipal Sludge in the Calcination...

Utilization of Municipal Sludge in the Calcination of Cement Clinker

Abstract:

Using the sludge of sewage treatment plant to calcine cement clinker is a new method and is confirmed on the international to utilize city sludge recycling and harmlessly. In this work the test of the raw material burnability, cement clinker mineral composition and petrographic analysis were used to study microscopic characteristics of clinker, to analysis of the effect of sludge performance of cement clinker calcination. It was found that when sludge were as a raw material for calcining cement clinker, best city sludge content was around 15% ~ 20%. With an improvement of lime saturation coefficient, the burnability of raw material declined. The mineral composition of sludge clinker was the same as that of the conventional Portland clinker, while mineral structure and morphology of the sludge clinker were better.

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Periodical:

Materials Science Forum (Volume 814)

Pages:

546-551

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.814.546

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Online since:

March 2015

Authors:

Qi Gang Zhao, Zuo-Ren Nie, Hong Liu, Su Ping Cui, Ya Li Wang

Keywords:

Burnability, Clinker, Mineral Structure, Urban Sewage Sludge

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References

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