EVALUATION OF THE POSSIBILITY OF USING COKE DUST IN COKING TECHNOLOGY

In this paper, the possibility of using coke dust from coke chemical industries as part of coal charge for high-temperature coking processes is discussed. The results of scientific research of coke dust of coke chemical industries are presented. The analysis of the granulometric composition of coke dust, the content of mineral components in coke dust particles of different sizes was carried out. Analysis of the quality of coke dust showed that this material has an increased ash content. Therefore it cannot be used as a raw material for coking technology without pretreatment aimed at reducing ash content. In order to reduce ash content, the initial coke dust was enriched by oil agglomeration. As a flotation reagent, waste oil of gas-blowing machines of coke-chemical industries was used in the research. Oil was added in an amount of 10% by weight to the weight of the initial coke dust suspension. The resulting coke-oil concentrate in terms of ash content met the requirements for raw materials for coking. Further, studies were carried out on coking experimental coal charges with the addition of various amounts of coke oil concentrate, the qualitative characteristics of the resulting coke were determined. As a raw material base, the following brands of Kuznetsk coals were used to compile coal charges: coal of the W W brand. "Karagailinskaya, coal of the brand K sh. "Coke plot", coal of the brand KO + CS COF "Berezovskaya", coal of the brand GZH OF "Abashevskaya", coal of the brand K sh. "Prokopevskaya". Coking of coal charges was carried out in the laboratory furnace of Nikolaev. Based on the results obtained, an assessment was made about the possibility of using coke dust in coking technology.