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Russian fat coal participant coking and coal blending method

A technology for coking coal and fat coal, which is applied in coke ovens, petroleum industry, etc., can solve problems such as a large amount of foamed coke and deteriorated coke quality, and achieve the effect of reducing the cost of coal blending

Inactive Publication Date: 2012-07-04
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

However, if Russian fat coal is simply replaced with domestic fat coal, the coke produced will produce a lot of coke, which will eventually deteriorate the quality of coke

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Russian fat coal participates in the method of coking coal blending, which includes the steps of mixing individual coking coals. The raw material components and weight percentages of the single coking coals used are:

[0027] Gas coal: 6%; Russian fat coal: 10%;

[0028] 1 / 3 coking coal of G=86: 15%; 1 / 3 coking coal of G=80: 15%;

[0029] G=88 coking coal: 15%; G=81 coking coal: 20%; lean coal: 19%.

[0030] Adjust the ratio of each single coking coal, and control the blended coal to meet the following process parameters: the cohesive index G value is 79-83, the Gibraltar fluidity is 400-2000ddpm, and the Aurya expansion degree b value is <10. Under the condition of no graded crushing, briquette coal technology or tamping coking process, the effective utilization of its resources, among them, the amount of gas coal and lean coal is up to 25%, the amount of coking coal is 35%, and the amount of high-quality coking coal is only 15%. Coal blending cost. The coal blendin...

Embodiment 2

[0032] Russian fat coal is involved in the coking coal blending method, which includes the step of mixing individual coking coals. The raw material components and weight percentages of the single coking coal used are: Russian fat coal: 12%; G=88 1 / 3 Coking coal: 15%;

[0033] 1 / 3 coking coal of G=77: 15%; coking coal of G=89: 18%;

[0034] Coking coal with G=79: 20%; Lean coal: 20%.

[0035] Adjust the ratio of each single coking coal, and control the blended coal to meet the following process parameters: the cohesive index G value is 79-83, the Gibraltar fluidity is 400-2000ddpm, and the Aurya expansion degree b value is <10. Under the condition of no graded crushing, briquette coal process or tamping coking process, the effective utilization of its resources, of which the amount of lean coal is 20%, the amount of coking coal is 38%, and the amount of high-quality coking coal is only 18%, which reduces the cost of coal blending. When the coal blending method of the present ...

Embodiment 3

[0037] Russian fat coal participates in the method of coking coal blending, which includes the steps of mixing individual coking coals. The raw material components and weight percentages of the single coking coals used are:

[0038] Gas coal: 5%; Russian fat coal: 8%;

[0039] 1 / 3 coking coal of G=87: 18%; 1 / 3 coking coal of G=72: 14%;

[0040] Coking coal with G=88: 19%; Coking coal with G=75: 20%; Lean coal: 16%.

[0041] Adjust the ratio of each single coking coal, and control the blended coal to meet the following process parameters: the cohesive index G value is 79-83, the Gibraltar fluidity is 400-2000ddpm, and the Aurya expansion degree b value is <10. Under the condition of no graded crushing, briquette coal process or tamping coking process, the effective utilization of its resources, of which the amount of lean coal is 21%, the amount of coking coal is 39%, and the amount of high-quality coking coal is 19%, reducing the cost of coal blending. The coal blending meth...

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Abstract

The invention discloses a Russian fat coal participant coking and coal blending method, which comprises a step of mixing and blending various single coking coals. The single coking coals in percentage by weight comprise 0-6 percent of gas coal, 8-12 percent of Russian fat coal, 15-18 percent of 1 / 3 coking coal of G being more than 85, 12-15 percent of 1 / 3 coking coal of G being less than 85, 15-20 percent of coal of G being more than 85, 20 percent of coal of G being less than 85 and 15-20 percent of lean coal. Under the process condition without stage crushing, coal briquette process or tamping coking, the method of the invention reasonably and efficiently utilizes the Russian fat coal, the coke quality is not deteriorated, and the coal blending cost can be reduced.

Description

technical field [0001] The invention belongs to coking coal blending technology, and specifically refers to a method for Russian fat coal participating in coking coal blending. Background technique [0002] In recent years, with the rapid development of iron and steel enterprises, the demand for coking coal has increased greatly, especially the demand for medium-deteriorated fat coal and coking coal. Fatty coal is moderately metamorphic coal, its volatile content is lower than that of gas coal, and a large amount of colloids can be formed during heating. In China's coal blending scheme, fat coal is used as the base coal, and more weakly cohesive gas coal and lean coal can be blended in. According to the Chinese coal classification standard (GB 5751-2009), the volatile content of fat coal is >10.0-37.0%, the G value is >85, and the Y value is >25.0; In addition to differences in cohesiveness and the number of colloids, there are also large differences in rheology, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B57/04
Inventor 项茹薛改凤宋子逵张雪红常红兵崔会明陈鹏鲍俊芳张前香詹立志
Owner 武汉钢铁有限公司
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