Phase Composition of Interstitial Clay and Gas Emissions on Heat Treatment

When interstitial clay, which is the waste from shale combustion, is fired at 250°C, the decomposition of organic matter results in the emission of H 2 , CO, SO 3 , and CO 2 from the ceramic samples. At 350–550°C, the content of oxidant (oxygen) and neutral gas (nitrogen) is markedly less. At 550–75...

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Bibliographic Details
Published in:Coke and chemistry (New York, N.Y.) N.Y.), 2023-08, Vol.66 (8), p.431-437
Main Authors: Abdrakhimov, V. Z., Nikitina, N. V.
Format: Article
Language:English
Subjects:
Anorthite
Calcium aluminum silicates
Calcium magnesium silicates
Chemistry
Chemistry and Materials Science
Clay
Complex compounds
Diopside
Emissions
Heat treatment
Industrial Chemistry/Chemical Engineering
Neutral gases
Organic compounds
Organic matter
Oxidizing agents
Phase composition
Recycling Production Wastes
Sulfur trioxide
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Summary:When interstitial clay, which is the waste from shale combustion, is fired at 250°C, the decomposition of organic matter results in the emission of H 2 , CO, SO 3 , and CO 2 from the ceramic samples. At 350–550°C, the content of oxidant (oxygen) and neutral gas (nitrogen) is markedly less. At 550–750°C, no sharp decrease in their content is observed. At 750–1000°C, the decrease is slight. At 1000°C, mainly CO is formed. At 1050°C, the fired sample contains practically no organic compounds. More complex compounds (anorthite, diopside) are formed, with increase in the mechanical strength.
ISSN:1068-364X
1934-8398
DOI:10.3103/S1068364X23701028