Method for economically and efficiently blending coal for coking and improving coke quality through coking single coal grading screening performance detection

Abstract

The invention discloses a method for economically and efficiently blending coal for coking and improving coke quality by detecting the grading screening performance of coking single coal, which comprises the following steps: respectively screening coking coal through sieves with different size fractions, and calculating the proportion of oversize products with different size fractions to form thescreening composition of the single coal. Through comprehensive, fine and deep research and analysis of coal quality of different screening size fractions of coking single coal, a coal quality cokingevaluation method system composed of the screening size fractions of coking coal is constructed by taking coal quality indexes of different size fractions and technical indexes of smelted coke as cores and taking determination of weight ratios of different performance indexes as a reference; coal quality grading evaluation and comprehensive evaluation are formed, and powerful guidance is formed for coking single coal property identification, coking coal blending test and coke cost and quality control; accurate judgment and definition of coking coal properties are greatly improved, meanwhile, the coal blending accuracy can be improved, the metallurgical coke cost can be reduced, and the metallurgical coke quality can be improved.

Description

technical field [0001] The invention relates to the technical field of coking, in particular to an economical and efficient coal blending coking method for improving the quality of coke by detecting the classification and screening performance of a single coking coal. Background technique [0002] The iron and steel industry still plays an important and irreplaceable role in the world economic structure. As the president of the World Iron and Steel Association said, "In the past 100 years, steel has been the material basis for social progress and development. In the next 100 years, steel will continue to play the role of the material basis for social development. In steel production, the traditional shaft furnace production is still the main form of steel production capacity, and coke in blast furnace iron smelting is the core element of its cost, output and quality control. The quality and cost of coke have become the key elements of the cost of ironmaking and the stable op...

AI Technical Summary

Problems solved by technology

Second, in the long run, the pressure of resource depletion and depletion

[0007] At present, the detection indicators of single coking coal and blended coal are relatively single, routine and superficial, and cannot effectively evaluate the comprehensive quality performance of coking single coal and blended coal. Especially in recent years, the coking coal market has been chaotic. Inaccurate evaluation causes fluctuations in coke quality and cost, and even affects the stability of blast furnace ironmaking production