Sulphur Dioxide Emissions during the Firing of Ceramic Bodies Based on Class C Fly Ash

Radomír Sokolař; Martin Nguyen

doi:10.4028/www.scientific.net/SSP.296.149

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Sulphur Dioxide Emissions during the Firing of Ceramic Bodies Based on Class C Fly Ash
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HomeSolid State PhenomenaSolid State Phenomena Vol. 296Sulphur Dioxide Emissions during the Firing of...

Sulphur Dioxide Emissions during the Firing of Ceramic Bodies Based on Class C Fly Ash

Abstract:

Fluid fuel combustion technology in coal-fired power plants is very popular in the Czech Republic, resulting in a relatively high production of a specific by-product - fluidized fly ash (class C according to ASTM definition), which differs from the classical high-temperature fly ash in mineralogical composition with a high sulphur content of anhydrite CaSO₄. Fluidized ash is not yet used in the production of fired building materials, where it could be used as a source of calcium oxide (for example, the production of porous ceramic tiles). However, high volume of sulphur dioxide emissions during the re-firing of fluidized fly ash in ceramic raw materials mixtures has been solved. The aim of the paper is definition of temperature ranges of anhydrite decomposition (formation of SO₂ emission) from pure class C (fluidized) fly ashes from different sources (power plants) depending on granulometry of fly ash especially.

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Periodical:

Solid State Phenomena (Volume 296)

Pages:

149-154

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.296.149

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Online since:

August 2019

Authors:

Radomír Sokolař*, Martin Nguyen

Keywords:

Ceramic Body, Firing, Fly Ash, SO₂ Emissions

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