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Outer Mongolia coking coal-participant coking coal blending method

A technology of Outer Mongolian coking coal and Mongolian coking coal is applied in the field of coking coal blending in which Outer Mongolian coking coal participates, so as to achieve the effect of not deteriorating the quality of the coke

Inactive Publication Date: 2012-06-27
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

Due to the different coal-forming conditions of coking coal in various regions, although the apparent indicators are high, such as G value and Y value, there are certain differences in rheology, expansion and coking microstructure.

Method used

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  • Outer Mongolia coking coal-participant coking coal blending method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] ① Control the quality of coking coal: Coking coal has a coarse-grained mosaic structure of more than 50%.

[0022] ② Adjust the ratio of each single coking coal, and control the blended coal to meet the following process parameters: G value: 79-82, Y value: 17-19mm.

[0023] The specific ratio of each single coking coal is gas fat coal: 5%; fat coal: 10%; 1 / 3 coking coal: 15%; Mongolian coal: 20%; coking coal: 38%; lean coal: 12%.

[0024] Using the coal blending method of the present invention, under the process conditions of no graded crushing, briquette process or tamping coking, coking in a mechanical coke oven with a length of more than 4 meters, the coke strength index: the crushing strength M40 is 81.6%, and the strength after reaction The CSR is 63.9%.

Embodiment 2

[0026] ① Control the quality of coking coal: Coking coal has a coarse-grained mosaic structure of more than 50%.

[0027] ② Adjust the ratio of each single coking coal, and control the blended coal to meet the following process parameters: G value: 79-82, Y value: 17-19mm.

[0028] The specific ratio of each single coking coal is gas fat coal: 3%; fat coal: 15%; 1 / 3 coking coal: 20%; Mongolian coal: 20%; coking coal: 32%; lean coal: 10%.

[0029] Using the coal blending method of the present invention, under the process conditions of no graded crushing, briquette process or tamping coking, coking in a mechanical coke oven with a length of more than 4 meters, the coke strength index: the crushing strength M40 is 81.0%, and the strength after reaction is 81.0%. The CSR is 63.1%.

Embodiment 3

[0031] ① Control the quality of coking coal: Coking coal has a coarse-grained mosaic structure of more than 50%.

[0032] ② Adjust the ratio of each single coking coal, and control the blended coal to meet the following process parameters: G value: 79-82, Y value: 17-19mm.

[0033] The specific ratio of each single coking coal is gas fat coal: 8%; fat coal: 12%; 1 / 3 coking coal: 18%; Mongolian coal: 17%; coking coal: 30%; lean coal: 15%.

[0034] Using the coal blending method of the present invention, under the process conditions of no graded crushing, briquette process or tamping coking, coking in a mechanical coke oven with a length of more than 4 meters, the coke strength index: the crushing strength M40 is 81.3%, and the strength after reaction is 81.3%. The CSR is 63.4%.

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Abstract

The invention discloses an Outer Mongolia coking coal-participant coking coal blending method. The method comprises a step of blending of all single coking coals, and the single coking coals comprise, by weight, 3-8% of gas-rich coal, 5-15% of rich coal, 15-20% of 1 / 3 coking coal, 15-20% of the Outer Mongolia coking coal, 30-38% of coking coal and 10-15% of lean coal. According to the invention, the Outer Mongolia coking coal participates in the coking coal blending according to a 1 / 3 coking coal application method, so the effective utilization of the Outer Mongolia coking coal resource can be realized under non-grading fragmentation and briquette technology or tamping coking technology conditions, and the coke quality is not deteriorated.

Description

technical field [0001] The invention belongs to a coking coal blending method, and specifically refers to a coking coal blending method involving coking coal from Outer Mongolia. Background technique [0002] In recent years, the output of the coking industry has increased rapidly and the quality of coke has been steadily improved, which basically meets the needs of blast furnace smelting. At the same time, it also causes a tight supply of coking coal, especially the contradiction of tight supply of high-quality coking coal. All coking enterprises have to seek new resources from the western border areas, Outer Mongolia, Australia, Canada, etc. at home and abroad. Due to the different coal-forming conditions of coking coal in various regions, although the apparent indicators are high, such as G value and Y value, there are certain differences in rheology, expansion and coking microstructure. [0003] Outer Mongolia coking coal has a volatile content of 24-26%, a cohesive ind...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B57/04
Inventor 项茹薛改凤张雪红鲍俊芳宋子逵詹立志盛军波陈翔陈鹏张前香任玉明
Owner 武汉钢铁有限公司
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