Prediction method matched with coal blend vitrinite reflectance distribution and application of predication method

Abstract

The invention relates to the field of coking, and particularly relates to a method for predicting the vitrinite reflectance distribution of coal blend according to coal blend ratio, vitrinite content and reflectance distribution, and a method for guiding coal blend by combining a mobility change function and a G value. The method comprises the following steps: by adopting a coal petrography analysis system, detecting the vitrinite reflectance distribution and vitrinite content of coal blend, and calculating the vitrinite reflectance distribution and content of the coal blend according to the vitrinite content, the reflectance distribution and coal blend ratio of the coal blend; and through calculation, controlling the vitrinite reflectance distribution range, the mobility and the G value of the coal blend, thus further controlling the mass of coke. According to the method disclosed by the invention, the errors of simply adding and calculating the vitrinite reflectance distribution of the coal blend according to the coal blend ratio without the consideration of different contents of different single vitrinite in a traditional method are corrected, the vitrinite reflectance distribution of the coal blend can be accurately predicted, high-strength coke under relatively low caking index conditions can be blended by combining the mobility function and G value.

Description

technical field [0001] The invention relates to a method for predicting the reflectance distribution of blended coal vitrinite in the field of coal coking, and a method for guiding coal blending and controlling coke quality by combining the fluidity of blended coal and the G value. Background technique [0002] Coal lithofacies is gradually applied to the field of coking coal blending because of its important role in coal rank characteristics, coke microstructure, and cold and hot strength. The existing calculation method of blending coal reflectance distribution adopts the method of simple summation, and calculates the blending coal vitrinite reflectance distribution according to the proportion of blending coal and the distribution of vitrinite reflectance, but this method does not consider the distribution of each blending coal The content of vitrinite is different. For example, Changguang Gas Feifei Coal has a vitrinite content of about 16%, while Ai Weiergou Coke and Fei...

AI Technical Summary

Problems solved by technology

The existing calculation method of blending coal reflectance distribution adopts the method of simple summation, and calculates the blending coal vitrinite reflectance distribution according to the proportion of blending coal and the distribution of vitrinite reflectance, but this method does not consider the distribution of each blending coal The content of vitrinite is different. For example, Changguang Gas Feifei Coal has a vitrinite content of about 16%, while Ai Weiergou Coke and Feimei Coal have a vitrinite content of about 90%. Therefore, the combined coal vitrinite content calculated by simply adding There is a huge difference between the group reflectance distribution and the actual test results, which is misleading for the guidance of coal blending

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