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Method for producing high-strength metallurgical coke by increasing blending proportion of gas-fat coal

A high-strength technology with proportioning proportions, applied in coke ovens, petroleum industry, etc., can solve the problems of metallurgical coke quality and metallurgical coke heat intensity greatly reduced, and achieve the goal of reducing resource consumption, benefiting costs, and reducing proportioning proportions. Effect

Inactive Publication Date: 2015-05-13
ANHUI UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

[0006] Aiming at the problem that the quality of metallurgical coke, especially the heat intensity of metallurgical coke, will be greatly reduced by increasing the proportion of gas-fertilizer-coal blending in coal blending coking, the present invention achieves Coking coal blending method for producing high-strength metallurgical coke

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  • Method for producing high-strength metallurgical coke by increasing blending proportion of gas-fat coal

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Embodiment Construction

[0022] The present invention is described in detail below in conjunction with specific examples, but the present invention is not limited to the following examples.

[0023] A 6m coke oven is used for coking, the coking time is 20h, and the coke is quenched by dry method. There are six types of coking coal used, namely gas coal, 1 / 3 coking coal, gas fat coal, fat coal, coking coal and lean coal. Gas coal comes from Shandong Zaozhuang Mining Bureau and Xinwen Mining Bureau, 1 / 3 coking coal comes from Henan Pingmei Group, gas-fertilized coal comes from Shandong Xinwen Mining Bureau, fat coal Shandong Zaozhuang Mining Bureau, coking coal comes from Shanxi Coking Coal Group, Lean coal comes from Anhui Huaibei Mining Bureau.

[0024] Firstly, carry out overall quality analysis on coking coal respectively; secondly, according to weight ratio, choose 1 / 3 coking coal or gas coal 24%, gas fat coal 12%~18%, fat coal 0%~12%, coking coal 42% and lean coal The coal is 10%, and four coal ...

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Abstract

The invention discloses a method for producing high-strength metallurgical coke by increasing the blending proportion of gas-fat coal and belongs to the technical field of coal blending for coking. According to the method, the high-strength metallurgical coke is produced through control on the volatile component index Vdaf, the caking index G, the maximum gelatin layer thickness Y and the distribution range of the vitrinite mean maximum reflectivity Rmax (0.8-1.5%). With the adoption of the method, the blending proportion of the gas-fat coal can be up to 18%, the coke thermal strength CSR is higher than 65%, and requirements of iron-making by blast furnaces larger than 2500 m<3> can be met.

Description

technical field [0001] The invention belongs to the technical field of coking coal blending, and in particular relates to a coking coal blending method for producing high-strength metallurgical coke by increasing the blending ratio of gas-fertilizer coal. Background technique [0002] Although my country's coal resources are extremely rich, high-quality coking coal resources such as coking coal and fat coal are becoming increasingly scarce, and high-strength metallurgical coke needs to be blended with a higher proportion of coking coal and fat coal. In recent years, due to the increase in my country's steel production, the output of metallurgical coke has also increased rapidly, consuming a large amount of coking coal resources. Because large-volume blast furnaces have higher requirements for the strength of metallurgical coke, a large amount of high-quality coking coal such as coking coal will be consumed. and fat coal. In the long run, how to combine the advantages of regi...

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Application Information

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IPC IPC(8): C10B57/04
CPCC10B57/04
Inventor 张代林黄大中张小勇郑明东
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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