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Phase Composition of Interstitial Clay and Gas Emissions on Heat Treatment

  • RECYCLING PRODUCTION WASTES
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Abstract

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 H2, CO, SO3, and CO2 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.

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This work was supported by ongoing institutional funding. No additional grants to carry out or direct this particular research were obtained.

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  1. Samara State University of Economics, Samara, Russia

    V. Z. Abdrakhimov & N. V. Nikitina

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  1. V. Z. Abdrakhimov
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  2. N. V. Nikitina
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Correspondence to V. Z. Abdrakhimov or N. V. Nikitina.

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Translated by B. Gilbert

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Abdrakhimov, V.Z., Nikitina, N.V. Phase Composition of Interstitial Clay and Gas Emissions on Heat Treatment. Coke Chem. 66, 431–437 (2023). https://doi.org/10.3103/S1068364X23701028

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  • DOI: https://doi.org/10.3103/S1068364X23701028

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