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Method for 1/3 coking coal to participate in coking and blending coal

A coking coal and coal blending technology, which is applied in the field of coking coal blending where 1/3 coking coal participates, can solve the problems of unstable coke quality, difficult to distinguish 1/3 coking coal coal quality, and difficult to achieve reasonable use, etc., to achieve improved stability sexual effect

Active Publication Date: 2010-02-17
武汉钢铁有限公司
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Problems solved by technology

[0004] Therefore, it is difficult to distinguish the coal quality of 1 / 3 coking coal in each mine according to the coal quality judgment method of 1 / 3 coking coal in China, and it is difficult to make reasonable use
At present, coking enterprises simply mix 1 / 3 coking coal according to industrial analysis indicators. In coal blending, the weight percentage ratio of 1 / 3 coking coal is: 10% to 40%. The quality of coke produced by this method is not stable

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  • Method for 1/3 coking coal to participate in coking and blending coal

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Embodiment Construction

[0037] An embodiment of the coking coal blending method of the present invention, which analyzes the coal quality of 1 / 3 coking coal in Shandong area, and classifies and mixes it according to the characteristics of the coal quality.

[0038] Coking coal blending method embodiment of the present invention, it comprises:

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Abstract

The invention relates to a method for 1 / 3 coking coal to participate in coking and blending coal. The method comprises the following steps: (1) detecting the 1 / 3 coking coal; (2) classifying the 1 / 3 coking coal according to a detection result of the step (1); and (3) blending the coal. The invention carries out reasonable classifying and blending according to the 1 / 3 coking coal of each mineral site by characteristics, such as coal rock indexes, technological properties, a microstructure and the like, divides the 1 / 3 coking coal into four classes, controls the weight percent of each class of 1 / 3 coking coal in coking and blending coal and enhances the quality stability of coke.

Description

technical field [0001] The technology belongs to a coking coal blending method, especially a coking coal blending method involving 1 / 3 coking coal. Background technique [0002] The method of evaluating 1 / 3 coking coal in my country is still based on industrial analysis indicators: volatile matter (Vdaf) > 28.0% ~ 37.0%, cohesion index G value > 65, colloidal layer thickness Y value ≤ 25.0mm. [0003] Due to the great differences in the coal quality of various mines, for example, the volatile content of 1 / 3 coking coal in Shandong area is as high as 36%, and some mines have higher G value, higher coke granular mosaic structure, and the coal quality is partial to 1 / 3 coking coal. ; Some ore points have a low degree of metamorphism, or a low G value, and the coke-forming microstructure contains a considerable amount of isotropic and inert structures, and its coal quality is more natural than gas coal. [0004] Therefore, it is difficult to distinguish the coal quality o...

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Application Information

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IPC IPC(8): C10B57/04
Inventor 项茹薛改凤鲍俊芳陈鹏张雪红张前香宋子逵刘尚超
Owner 武汉钢铁有限公司
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