Authors: A.V. Papin, A.V. Nevedrov, A.Yu. Ignatova, E.A. Makarevich, I.V. Bobrova

Title of the article: Briquetting of coke dust with sand as a binder obtained by thermal dissolution of coal in the anthracene fraction

Year: 2023, Issue: 6, Pages: 47-53

Branch of knowledge: 2.6.12. Chemical technology of fuel and high-energy substances

Index UDK: 662.749.33

DOI: 10.26730/1999-4125-2023-6-47-53

Abstract: The article presents data on the study of the possibility of briquetting the waste of coke chemical production – coke dust with the use of a baking-like product obtained by thermal dissolution of coal in the anthracene fraction of coal tar distillation as a binder. The method consists in briquetting coke dust, including mixing crushed solid fuel with a binder, briquetting the mixture under pressure, characterized in that the crushed solid fuel is pre-enriched by oil agglomeration to an ash content of 4.8.0-6.5 wt.% and sulfur content 0.05 wt.% coke dust with an initial ash content of 10-16.8 wt.%, sulfur content of 0.2-0.3 wt.%, with particle sizes less than 1 mm, pitch obtained by thermal dissolution of coal in the anthracene fraction is used as a binder, in an amount of 4.0-6.0% by weight of the initial concentrate, and the pitch is heated to 100-130 ° C before being introduced into the initial concentrate, and the briquetting of the mixture under pressure is carried out stepwise, for which a load of 5-6 atm is first set, with an exposure of 3-5 minutes and then up to 15 atm with an exposure at a maximum load of 3-5 minutes. As a raw material for thermal dissolution, hard coals of the Kuznetsk basin are used. The resulting baking-like product is characterized by the lowest ash content and can be used as a sintering additive to the coking charge (obtaining high-quality coke, the use of ramming of the charge or other methods of caulking the charge). The developed method relates to the technology of briquetting combustible substances, for example coal sludge, small classes of coal, coke dust, etc. The resulting briquettes can be used as fuel for combustion in domestic and industrial furnaces, as well as in the coke and metallurgical industries

Key words: coal anthracene fraction coke dust pitch thermal dissolution

Receiving date: 01.11.2023

Approval date: 10.12.2023

Publication date: 21.12.2023

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