RESEARCH ON THE EXTRACTION OF ALUMINA FROM ASH AND SLAG WASTE FROM THERMAL POWER PLANTS

Authors

  • Oleksii O. Khlopytskyi Ukrainian State University of Science and Technologies, Scientific and Educational Institute “Ukrainian State Chemical and Technological University" , Ukraine https://orcid.org/0000-0002-5129-768X
  • Yuriy A. Gorbachоv Ukrainian State University of Science and Technologies, Scientific and Educational Institute “Ukrainian State Chemical and Technological University" , Ukraine https://orcid.org/0009-0002-7875-2408
  • Natalia P. Makarchenko Ukrainian State University of Science and Technologies, Scientific and Educational Institute “Ukrainian State Chemical and Technological University" , Ukraine https://orcid.org/0000-0002-8603-4222

DOI:

https://doi.org/10.15421/jchemtech.v34i2.353351

Keywords:

Keywords: ash waste, alumina, enrichment, fractions, magnetic, non-magnetic, processing.

Abstract

This paper discusses research on the processing of ash waste from thermal power plants and its fractions. The morphological and chemical composition of ash waste and its fractions has been established. A processing method is proposed that allows for the extraction of alumina from the non-magnetic fraction. It has been established that the non-magnetic fraction contains 27.4% alumina, as opposed to 17.4% in the original waste. It was found that the morphology and ratio of reagents have a significant effect on the sintering process at different temperature intervals and durations of the process itself. It was found that an increase in temperature does not significantly affect the process of aluminum oxide transition from aluminosilicates of different chemical compositions to sodium aluminosilicate.

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Published

2026-06-19

Issue

Vol. 34 No. 2 (2026): Journal of Chemistry and Technologies

Section

Chemical Technology

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