No abstract

Purpose. Selection of the most effective antipyrogenic coating for stacks of coal and special coke during open storage to pre serve consumer properties. methodology. The methods of technological modeling and experimental studies are used. findings. Observations of physical changes in stacks covered with various flame retardant materials are conducted through field and laboratory tests over time. Corresponding degrees of preservation of the initial state of the product when using certain coatings are established. The most effective coatings were identified by changes in the technical and particle size parameters of coals and special coke. Monitoring of temperature data in the depth of stacks confirmed a direct relationship between stack volumes and the degree of oxidation processes. originality. For the first time, the dependences of the safety of fractions and technical parameters of Shubarkol coal and special coke in stacks on the use of different flame retardants over time have been established. The obtained results on using polymeric materials make it possible to create similar coatings from recycled materials and production wastes. Practical value. The obtained laboratory results allow us to recommend certain antipyrogenic materials for use in production operations on the basis of the Shubarkol and other coal industry enterprises. The development of polymer coatings from recycled coke production will improve the environmental situation in the region.

Purpose. To determine and compare the qualitative and quantitative characteristics of products obtained under different coking conditions to streamline the process and consider the deeper use of recycled materials at Shubarkol Komir JSC. Methodology. Based on the existing coking technology on the basis of the enterprise, two variants of temperature exposure to coal were tested. The first option is heating coal to 900 C, which is carried out by slow thermolysis of coal in a stream of ascending gases. The second option is high-speed heating of coal to 900 C with further loading of the released products into the chamber for additional pyrolysis at 800 C, which is carried out with the development of reactions involving oxygen-containing gases from the furnace and from the outside. Findings. At the production site as well as under laboratory conditions, the composition and quality characteristics of the products of heat treatment of long-flame coal under various temperature effects were determined. Differences in the composition of decomposition products were noted and their quantitative yield was determined. Originality. Analytical data on coking products have been obtained and the dependences of their quantitative and physical parameters on different applications of thermolysis on the coals of the Shubarkol deposit have been established. Practical value. The results of the work allow improving the technology of coke production by introducing an additional stage of pyrolysis, which will lead to an improvement in the consumer properties of coke, and also create conditions for the development of methods for using secondary production products.