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Dergiler / Afyon Kocatepe Üniversitesi Fen ve Mühendislik Bilimleri Dergisi / 2009 / Cilt: 9 - Sayı: 3

PRODUCTION OF FIRED CERAMIC MATERIALS FROM FLY ASH WITH WITHERITE ADDITIVE

Bahri ERSOY
Taner KAVAS
Atila EVCİN
Serhat BAŞPINAR
Ali SARIIŞIK
Sedef DİKMEN
Sayfa
45–52
Yayın Tarihi
2009-12-01
DOI
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Özet

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Abstract

In this study, the effect of witherite (BaCO3) addition on the sintering of lignite coal fly ash taken from the Seyitömer power plant of Kütahya/Turkey was examined at temperatures of 1100, 1150 and 1200 0 C in air atmosphere. Bloating of the fly ash samples sintered at 1150 0 C was prevented by shifting the decomposition temperature of CaSO4 in the fly ash to a higher temperature, and their physicomechanical properties (porosity, water absorption, bulk density and bending strength) were improved with BaCO3 addition owing to the phase transformation from CaSO4 (anhydrite) to BaSO4 (Barite) as supported by XRD analysis. Positive effects of BaCO3, however, were not seen on the fly ash samples sintered at 1100 0 C. All the fly ash samples sintered at 1200 0 C were bloated due to the gas evolving during the thermal decomposition metal sulphates, and also they melted.

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Bu Makaleye Atıf Yap

ERSOY, B., KAVAS, T., EVCİN, A., BAŞPINAR, S., SARIIŞIK, A., DİKMEN, S. (2009). PRODUCTION OF FIRED CERAMIC MATERIALS FROM FLY ASH WITH WITHERITE ADDITIVE. Afyon Kocatepe Üniversitesi Fen ve Mühendislik Bilimleri Dergisi, Cilt: 9 - Sayı: 3, 45–52. https://ajindex.com/articles/452223

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Kaynakça (15)

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