Authors: A.N. Zaostrovsky

Title of the article: Petrographic characteristics of genetic types of Kuzbass coals

Year: 2023, Issue: 6, Pages: 54-61

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

Index UDK: 662.741

DOI: 10.26730/1999-4125-2023-6-54-61

Abstract: The properties of coals are determined by the botanical nature of the original plant material, which causes a difference in the types of vitrinite in coals, which differ in the reflectivity of vitrinite, sinterability and yield of volatile substances. Petrographic studies of the coals of the Kuznetsk basin have shown a variety of associations of collinite with telinite, telinite with vitrodetrinite and vitrinite with mineral components in these coals. There is great diversity not only in the group petrographic composition, but also within the vitrinite group, by which reflectivity is determined. Such diversity dictates the need for identical conditions for measuring reflectivity and the need to determine differences in the reflectivity of the main components of vitrinite in order to more correctly assess the degree of metamorphism of the studied coals. The most prone to sintering are coals of medium degree of metamorphism, corresponding to the grades Zh, KZh, K. The main carriers of sintering are collinite and liptinite. Inertinite and thelinite are characterized by a complete absence of sintering properties. According to the results of detailed petrographic studies of the hard coals of the Kuznetsk basin of various deposits given in this article, a variation in the properties of various types of vitrinite of Kuznetsk coals was found. This fact must be taken into account when composing coking charges in order to obtain coke of high mechanical strength (CSR) and low reactivity (CRI).

Key words: Coal petrographic analysis of coal vitrinite reflection index reflectogram telinite collinite vitrodetrinite charge sinterability coking coal

Receiving date: 08.11.2023

Approval date: 10.12.2023

Publication date: 21.12.2023

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