Authors: A.N. Zaostrovsky

Title of the article: Dependence of the mechanical strength of the coke on the amount of landing components

Year: 2021, Issue: 6, Pages: 40-47

Branch of knowledge: 05.17.07 Chemical technology of fuel and high-energy substances

Index UDK: 662.741.3.022.001.5

DOI: 10.26730/1999-4125-2021-6-40-47

Abstract: Concentrates of coal from the Kuznetsk Basin, which form the basis of the charge for coking, have been investigated in order to establish the relationship between the mechanical strength of coke and the sum of the lean components of the coal. It is shown that one of the main parameters used in Russia to classify coals and evaluate them as raw materials for coke production, the thickness of the plastic layer (Y, mm) decreases almost linearly with an increase in the amount of lean components (∑ОК,%).The free swelling index (SI), as an indicator of coal sintering, changes with the stage of metamorphism and significantly depends on the petrographic composition, decreasing with an increase in the amount of lean components. It was found that the Roga index (RI), which serves as an indicator of sintering capacity based on the characteristics of the mechanical strength of the non-volatile residue obtained by rapid heating (at 850 °C) of a mixture of coal and reference anthracite, significantly decreases with an increase in the amount of lean components. The results obtained for determining the sintering capacity of coals by various methods, depending on the amount of lean components, can serve for calculating the charge and predicting the quality of coke.

Key words: bituminous coal petrographic analysis of coal sum of lean components vitrinite reflectance reflectogram charge mechanical strength of coke

Receiving date: 08.11.2021

Approval date: 05.12.2021

Publication date: 24.12.2021

CITE DOWNLOAD