The dissertation is aimed at the development of scientifically sound parameters of blast furnace coke production from coal charge, characterized by high gas coal content.
The object of research is the process of forming the yield and quality of blast furnace coke and chemical coking products from coal charge, which contain high content of gas coal.
The subject of research – coal concentrates, coal charge with high content of gas coal, blast furnace coke and chemical coking products.
In the dissertation work on the basis of the received results of the performed laboratory, research-industrial and industrial researches the important scientific and technical problem which is characterized by scientific novelty and has practical value is solved, namely – scientifically substantiated parameters of blast furnace coke production from the coal charges gas coal content.
The research was carried out using theoretical and empirical research methods. Among the theoretical methods used system analysis and synthesis, generalization, formalization, classification, analogy. In the experimental part of the work used modern standardized methods for determining the properties of coal – sieve, proximate (Wrt, Wa, Ad, Sdt, Vdaf), plastometric (x, y), petrographic (R0, Vt, Sv, I, L, reflectogramm vitrinite) and ultimate (Cdaf, Hdaf, Ndaf, Sdt, Odaf) analyzes. In addition, the expansion pressure and bulk density of coal and charge were determined.
The quality of the obtained coke was evaluated by sieve, proximate (Wrt, Wa, Ad, Sdt, Vdaf) and ultimate (Сdaf, Hdaf, Ndaf, Sdt, Odaf) analyzes, its real and imaginary density, porosity, abrasive hardness according to Ginsburg and structural strength were determined according to Gryaznov, microstructure (ratio of anisotropic and isotropic texture), reactivity, as well as mechanical and post-reaction strength. The quality indicators of coal tar were determined according to TU U 19.1–00190443–100:2016, the mass fraction of substances not dissolved in toluene – according to DSTU 8390–2015. The quality of coal oil was determined according to TU U 20.1–00190443–117:2017, DSTU 2265–93 and DSTU 2266–93. Statistical analysis of the obtained results and development of mathematical equations were performed using a licensed computer program Microsoft Excel.
Key words: gas coal, coal charge, blast furnace coke, preparation and coking of coal charge, yield of chemical coking products.
