Application of Coal Rock Analysis in Coking Productions

Wu Xi ,Wu Son,Qing Chen ,Bin Liu

doi:10.11648/j.ajac.20200801.11

Abstract

In the coking industry, the variety and quality of single coal is the basis for influencing the quality of coal blending and ultimately the quality of coke products. Nowadays, some coking plants generally use industrial analysis methods to determine the quality of coal varieties and coal blending. However, using industrial analysis method alone cannot ensure that the variety quality identification of single coal and mixed coal is correct and reliable, therefore, there is no guarantee of coking coal blending and the final coking quality. Identifying coal by means of coal-rock analysis and distinguishing mixed coal can make up for the deficiency of industrial analysis in testing coal quality and types of coal. At the same time, according to the reflectivity of the vitrinite of coal can be additive, using synthetic coal reflectance distribution map to guide coal coking, can predict, improve and raise the quality of coke products. In this paper, some examples are given to identify coal type and distinguish mixed coal by reflectivity of coal vitrinite combined with industrial analysis method. At the same time, the method and example of applying synthetic coal reflectivity distribution map to guide coking coal to improve coke quality are also given. Finally noted, when using coal-rock method to guide coking and predict coke quality, it must be tested no arbitrary application.

Highlights

Because of the different coal sources, different resource conditions and different quality control methods of coal sources, the quality of single coal entering coking plant fluctuates greatly, and there are mixed coal phenomena in different degrees
In order to pursue high profits, some coal washing plants deliberately mix some inferior coal into high quality coal, resulting in the fluctuation of the quality of a single kind of coal
If the washing quality of coking coal is poor and there is mixed coal phenomenon, it will directly affect the quality of coke produced [1, 2]

Summary

Introduction

Because of the different coal sources, different resource conditions and different quality control methods of coal sources, the quality of single coal entering coking plant fluctuates greatly, and there are mixed coal phenomena in different degrees. In order to pursue high profits, some coal washing plants deliberately mix some inferior coal into high quality coal, resulting in the fluctuation of the quality of a single kind of coal. The maximum reflectivity of vitrinite group of coal is used to detect and control the quality of coking coal to prevent the phenomenon of coal mixing. The reflectivity distribution map is used to guide the coking production of coal blending, so that the coke quality can be improved [3, 4]

Methods

Results

Conclusion