Influence of the Conditions of Mechanical Processing of Oxidized Coal on the Properties of Humic Acids

N. V. Yudina; Юдина Н. В.; A. V. Savel’eva; Савельева А. В.

doi:10.31857/S0023117723020184

Influence of the Conditions of Mechanical Processing of Oxidized Coal on the Properties of Humic Acids

Authors: Yudina N.V.¹, Savel’eva A.V.¹
Affiliations:
1. Institute of Petroleum Chemistry, Siberian Branch, Russian Academy of Sciences
Issue: No 2-3 (2023)
Pages: 11-15
Section: Articles
URL: https://journals.rcsi.science/0023-1177/article/view/140038
DOI: https://doi.org/10.31857/S0023117723020184
EDN: https://elibrary.ru/CBZQDB
ID: 140038

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Abstract
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Abstract

The results of a study of the effect of mechanical energy on the properties of humic acids in the course of mechanical processing of oxidized coal in a planetary mill are presented. It is shown that, upon the mechanical action on coal in the presence of alkaline and oxidizing alkaline reagents in a planetary-type mill with steel balls used as grinding bodies, the yield of humic acids increased by 25–33%; the molecular weight decreased and the concentration of functional groups increased in comparison with those of humic acids obtained by mechanical processing with ceramic balls. A change in the density of balls affects the mechanics of their motion and the amount of energy during the fall.

Keywords

oxidized coal, mechanochemical action, steel and ceramic balls, humic acids, properties

About the authors

N. V. Yudina

Institute of Petroleum Chemistry, Siberian Branch, Russian Academy of Sciences

Email: natal@ipc.tsc.ru
Tomsk, 634055 Russia

A. V. Savel’eva

Institute of Petroleum Chemistry, Siberian Branch, Russian Academy of Sciences

Author for correspondence.
Email: anna@ipc.tsc.ru
Tomsk, 634055 Russia

References

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