Thermodynamics of Reactions Taking Place When Roasting Fuel-Containing Charge Consisting of a Carbonate Component and Coal Enrichment Waste

The analysis of the possibility of reducing energy costs for firing a two-component The analysis of the possibility of reducing energy costs for roasting a two-component raw material charge including a carbonate component and waste of gravitational enrichment of coals by assessing theoretical energy costs for the process was made. Thermodynamic analysis of 33 reactions was performed to determine the possibility of solid-phase chemical reactions between clay minerals and the carbon-containing component of coal enrichment waste, as well as to determine the influence of the products of these reactions on the process of decarbonization of calcium carbonate and the formation of primary clinker minerals. Changes in Gibbs energy of chemical reactions of formation of primary clinker minerals are considered. It is established that the greatest thermodynamic probability is characterized by reactions, the products of which are bicalcium silicate and tricalcium aluminate. The presence of organic matter in the feed mixture helps to reduce the Gibbs energy changes of chemical reactions.

A.A. RIAZANOV¹, Engineer (This email address is being protected from spambots. You need JavaScript enabled to view it.)
V.I. VINNICHENKO², Doctor of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.)
A.N. RIAZANOV¹, Candidate of Sciences (Engineering)

¹ Ufa State Petroleum Technological University (1, Kosmonavtov Street, Ufa, 450062, Russian Federation)
² Kharkiv National University of Civil Engineering and Architecture (40, Sumska Street, Kharkiv, 61002, Ukraine)

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