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

Title of the article: Briquetting of carbon residue from pyrolysis of coal-fired tires

Year: 2025, Issue: 6, Pages: 59-64

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

Index UDK: 662.749.33

DOI: 10.26730/1999-4125-2025-6-59-64

Abstract: The article presents data on the study of the possibility of briquetting the carbon residue of tire pyrolysis using coal pitch obtained by distillation of coal tar in the production technology of mesophase pitch as a binder. The favorable combination of physico-chemical properties – coke-forming ability and low viscosity in the molten state distinguishes coal pitch from other types of binders, thanks to it a wide range of commercial fuel products is obtained. The method consists in briquetting the carbon residue, including mixing it with a binder, briquetting the mixture under pressure. The crushed carbon residue of tire pyrolysis is pre-enriched by oil agglomeration to an ash content of 5,8.0-6.5 wt.% and sulfur content up to 1.8 wt.% carbon residue with an initial ash content of 8.9-20.8 wt.%, as well as the yield of volatile substances (7.50–16.55%), sulfur content (3-5%). also, the yield of volatile substances (7.50–16.55%), the sulfur content (3-5%), with particle sizes less than 1 mm, coal pitch in an amount of 4.0-6.0% by weight of the initial concentrate is used as a binder, and the pitch is heated to 60-80 ° C before being introduced into the initial concentrate, and the mixture is briquetted under pressure They are produced stepwise, for which a load of 5-6 atm is first set, with an exposure time of 3-5 minutes and then up to 15 atm. with a maximum load exposure of 3-5 minutes. The qualitative characteristics of the obtained briquettes were determined, the data was analyzed, and the characteristics of the obtained briquettes corresponded to the required values of quality indicators in accordance with the requirements of State standard. The obtained briquettes have the technical characteristics required for briquette fuel according to State standard 21289-2018 "Coal briquettes. Methods for determining mechanical strength" and can be used as fuel for combustion in domestic and industrial furnaces, as well as in everyday life.

Key words: carbon residue of tire pyrolysis coal tar coal pitch briquetting binder briquette

Receiving date: 17.06.2025

Approval date: 15.11.2025

Publication date: 22.12.2025

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