Аннотация
This paper presents the results of scientific research aimed at developing a technology for the production of high–carbon ferrochrome using a new reducing agent - high-ash coal from the Saryadyr deposit. To evaluate the carbothermic reduction of chromium, iron, and silicon, the method of complete thermodynamic modeling (PTM) of metallurgical processes was used, implemented using the HSC Chemistry 10.0 software package in the temperature range of 600-2800 K. Thermodynamic analysis has shown that the use of high-ash coal in the smelting of carbonaceous ferrochrome does not cause significant technological deviations. The process of chromium and iron reduction proceeds stably, ensuring their almost complete restoration to the metallic phase. Additionally, a study was conducted on the composition of coal ash, which showed that a high concentration of silicon and aluminum oxides allows partially or completely replacing quartzite in the charge mixture, which helps reduce production costs. Based on the thermodynamic data obtained, experimental studies were conducted in a laboratory high-temperature Tamman furnace designed to simulate metallurgical processes. During laboratory tests, prototypes of carbonaceous ferrochrome corresponding to the FH800 brand were obtained, which confirms the possibility of practical use of high-ash Saryadyr coal in industrial production.