关键词: 反射率, 活惰比, 显微组分, 流动度, 炼焦配煤

Abstract: Scientific and reasonable coal blending technology was very important for the high-quality development of coking enterprises. The core of coking coal blending technology lied in the in-depth understanding of the coal quality characteristics of raw coal. The main factors affected the properties of coking coal include metamorphic degree, maceral composition and third genetic factor-fluorescence characteristics. Therefore, coal petrology was very important for the research and application of coking coal blending technology. This review discussed the development status of three coking coal blending technologies, such as experience coal blending, maceral coal blending and artificial intelligence coal blending, and summarized the overall development trend of coking coal blending technology. Combined with the author's research practice, the application status of coal petrological indexes in coking coal blending was mainly combed. While paying attention to the characteristics of maceral, it also took into account the characterization of coking coal by relevant parameters such as process indicators. In practical application, the selection and utilization of various index parameters need to comprehensively consider the parameter adaptation range and respect the true correspondence of coking coal. Based on the above content, the overall idea of associating geological factors and process indexes such as coal-forming age, producing area, caking index and gum layer index was put forward to realize the scientific and in-depth correlation between coke performance and raw coal characteristics, and to construct a new coal blending technology system of origin-process-result. By summarizing the key role of maceal in coking coal blending and its application status, the manuscript pointed out the development trend of typical coking coal blending technology, and put forward a new system of optimized coal blending technology based on maceral+fluidity, so as to establish a reliable evaluation system for coal blending and coking industry and better meet the market demand.

Key words: vitrinite reflectivity, ratio of active-inert components, maceral, mobility, coking coal blending