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Blending method of Australian coking coal with G value of less than 75

A technology of G value and coking coal, applied in the field of coal blending and coking, can solve the problems of increasing production cost, unable to use coking coal, etc., and achieve the effect of reducing coal blending, low coal blending cost and excellent coke quality.

Inactive Publication Date: 2021-08-06
武汉钢铁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This will significantly increase the production cost and cannot fully rationalize the application of coking coal with a G value below 75

Method used

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  • Blending method of Australian coking coal with G value of less than 75
  • Blending method of Australian coking coal with G value of less than 75
  • Blending method of Australian coking coal with G value of less than 75

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0053] Coal 1, Coke 2, Coke 3, 1 / 3 Coke 1, 1 / 3 Coke 2, 1 / 3 Coke 3, fat coal, and Australian coking coal with low G value, the coal quality analysis data of lean coal in a coking plant are shown in Table 1 .

[0054] Table 1 Experimental data of single coal

[0055]

[0056]Step 2: Analyze the coking performance of coking coal and 1 / 3 coking coal single coal.

[0057] Table 2 Comparison of coking CSR of each single coal

[0058]

[0059] (The coking of the above single coal is smelted in a 2 kg experimental coke oven, and each laboratory can analyze it according to the specific small coke oven).

[0060] Rank coking coal and 1 / 3 coking coal single coal coking performance:

[0061] CSR 焦1 >CSR 焦2 ≈CSR 焦3 >CSR 低G值焦煤 ;

[0062] CSR 1 / 3焦1 >CSR 低G值焦煤 >CSR 1 / 3焦3 ≈CSR 1 / 3焦2 Wherein, coke 1 represents coking coal 1#, coke 2 represents coking coal 2#, coke 3 represents coking coal 3#, 1 / 3 coke 1 represents 1 / 3 coking coal 1#, 1 / 3 coke 2 represents 1 / 3 coking coal 2#, ...

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Abstract

The invention discloses a blending method of Australian coking coal with a G value of less than 75. The blending method comprises the coal types in percentage by weight: 15-20% of fat coal, 7-15% of 1 / 3 coking coal 1#, 5-7% of 1 / 3 coking coal 2#, 13-18% of coking coal 1# with G of greater than 85, 19-23%of coking coal 2# with G of 80-85, 0-3% of coking coal 3#, 10-20% of coking coal with a low G value and 12-14% of lean coal. The invention discloses the high-proportion low-G-value low-ash Australian coking coal; the blending proportion reaches 20%, the coal types of the blended coal are not changed, under no grading crushing, a briquette process or a tamping coking process technological condition, the blending of the high-quality coking coal can be reduced, the 0 blending of the coal type with low cost performance can be reduced, the coal blending cost is low, the coke quality is excellent, and the requirements of a blast furnace of 3000 m<3> or more can be met.

Description

technical field [0001] The invention relates to a blending method of coking coal, in particular to a blending method of Australian coking coal with a G value lower than 75, and belongs to the technical field of coal blending and coking. Background technique [0002] Coking coal is the main support for the quality of coke, and the quality of coking coal has a great influence on the quality of coke. Most coking enterprises evaluate and use coking coal according to G value and volatile matter (or vitrinite reflectance). Under normal circumstances, coking coal is used as a skeleton coal with a high ratio of blending, and the requirements for G value are also high. Coking coal with a high G value is used more, and coking coal with a lower G value is blended lower. In actual production, the production is 3000m 3 The coke required for the above blast furnaces is hardly suitable for coking coal with a G value lower than 75. This will significantly increase the production cost, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B57/04
CPCC10B57/04
Inventor 项茹宋子逵丁海刘睿鲍俊芳冯强任玉明朱慧周森林曹素梅
Owner 武汉钢铁有限公司
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