Method for establishing model displaying influence of ash content of coking coal on coke thermal performance

Abstract

The invention discloses a method for establishing a model displaying influence of ash content of coking coal on coke thermal performance. The method includes the steps that 1) a relation between dry basis volatiles Vdmi of an i-type coking coal in coordinating coal and dry ash-free basis volatiles Vdafi of the i-type coking coal and dry basis volatiles Vdmi thereof is set; 2) the dry basis ash content of coke is set, and wi is the weight ratio of i-type coking coal and the coordinating coal; 3) the P is set to be the impact index of singe type coking coal dry basis ash contents in the coordinating coal to the coke thermal performance, the P satisfies the equation of P=(Adj-Adjz)*K, the K is an impact constant, the Adjz is the regulated coke based dry basis ash content, the P value is positive and stands for the fact that the influence of the coking coal on the coke thermal performance relative to the dry basis ash content of a coke base is negative, and on the contrary, the influence is positive. The method is beneficial to knowing the weight of the ash content in coking coal quality evaluation.

Description

technical field [0001] The invention belongs to the technical field of coal blending and coking, and in particular relates to a method for establishing a model of the influence of coking coal ash on the thermal performance of coke. Background technique [0002] The dry basis ash in coke is one of the important indicators of coke quality control. It not only affects the ironmaking output in the blast furnace production process, increases the cost of slagging raw materials and coke ratio, but also deteriorates the quality of coke in the blast furnace. The dry basis ash content in coke affects the quality of coke in many ways. For example, if the ash content is high, the reactivity of coke will increase, and the strength will decrease after the reaction. Therefore, controlling the dry basis ash in coke is of great significance for improving the quality of coke, especially for improving the thermal performance of coke. However, since the dry basis ash in coke mainly comes from ...

AI Technical Summary

Problems solved by technology

However, this document neither reported the influence of the ash content of each specific single coal on the thermal performance of coke, nor did it report the quantitative influence of its influence on the thermal performance of coke.

Images