Method for refining coke used for measuring coke optical texture

Abstract

The invention relates to a method for refining coke used for measuring the coke optical texture of single coking coal in a laboratory. The method comprises the following steps of: collecting a sample of the coking coal to be measured; according to a coal sample preparation method, cutting down and crushing the coal sample, and uniformly stirring, wherein the grain size of the coal sample is controlled to be less than or equal to 2.0 millimeters; placing the coal sample in a crucible, putting a pressing block on the surface of the coal sample, and closely covering the crucible by a crucible cover, wherein after the coal sample of the pressing block is pressed, the density of the coal sample is required to be 0.7 to 0.9g / cm<3>; putting the crucible in a muffle furnace, heating the crucible to 950 to 1,000 DEG C, and keeping the temperature constant for 1 to 2 hours; taking the crucible out, naturally cooling the crucible to ambient temperature, and taking the pressing block out; cutting the coke blocks into pieces; and under a polarizing reflection microscope, observing the optical texture of the prepared coke blocks by using an oil immersion objective. The method has the advantages of simple coke-refining method, low coal sample consumption, simple test equipment and little environmental pollution; in addition, the coke sample can meet the requirement on the measurement of the optical texture, and method can better evaluate coal quality of the coking coal, guide coal blending in production and adjust a coal blending rate in a coking process.

Description

technical field [0001] The invention relates to a coke refining method, in particular to a coke refining method for testing the coke optical structure of a single coking coal in a laboratory. Background technique [0002] Industrial analysis indicators and process indicators play a very important role in the process of understanding the properties of a single coking coal. The type of coking coal can be judged through the analysis results, but it is relatively rough when reflecting the coal quality of coking coal and evaluating the quality of coking coal. The following problems exist: when the coking coals of different mines are classified according to the industrial indicators and process indicators, and the coal quality research is carried out, it is found that they belong to the same coal type and the coal quality is close. But there are big differences in the process of coking. At present, the optical structure of coke plays an important role in the study of coke qualit...

AI Technical Summary

Problems solved by technology

The following problems exist: when the coking coals of different mines are classified according to the industrial indicators and process indicators, and the coal quality research is carried out, it is found that they belong to the same coal type, and the coal quality is close to

Using the above method to refine test coke has its disadvantages: large coal consumption, serious waste of coal resources, low work efficiency (one laboratory generally refines one furnace of coke with a small coke oven), relatively large pollution, and due to the Due to factors such as floor area, staffing, coal source usage, and complicated procedures, the laboratory is usually equipped with only one small coke oven, and no more than two at most. With the increase of coal loading, the coking time gradually increases and the work efficiency is low.

Images