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A method for blending high volatile coking coal

A high-volatility, coking coal technology, applied in the coking oven, petroleum industry, etc., can solve the problems of coke cold strength and thermal performance, coke coking rate reduction, increase the amount of gas generation, etc., to improve coke quality and chemical products The effect of increasing yield and avoiding severe decline

Active Publication Date: 2017-10-17
HBIS COMPANY LIMITED HANDAN BRANCH COMPANY
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Problems solved by technology

However, the volatile content of blended coal is high, and there are more cracks and pores inside the coke during the coking process, and the microstructure of the coke changes, which has a significant impact on the cold strength and thermal properties of the coke; the increase in volatile content will also cause coke The coking rate is reduced and the output is reduced
However, the increase of volatile matter will increase the amount of gas generated, increase the yield of chemical products, and reduce the coke pushing current

Method used

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  • A method for blending high volatile coking coal
  • A method for blending high volatile coking coal
  • A method for blending high volatile coking coal

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Embodiment Construction

[0012] The present invention is a method for blending coking coal with high volatile content. The blending ratio of each single coking coal is as follows: 0-5% gas coal, 15%-23% gas-fat coal, 0-8% fat coal, 1 / 3 coking coal 19-28%, coking coal 30%-48%, lean coal 8-25%, lean coal 0-7%. Coking coal includes coking coal 1#, coking coal 2# and coking coal 3# with a volatile content of 22% to 27%, and their weight percentages are 0 to 6% for coking coal 1# and 10% to 19% for coking coal 2#, respectively. Coking coal 3# is 16% to 25%, and the sum of their weight percentages is 30% to 48%; the coking index of coking coal 1# is G≥85, and the average maximum reflectance Rmax of vitrinite is 1.256 to 1.415, 40Kg small coke oven test thermal reactivity CRI≤20%, post-reaction strength CSR≥70%; coking coal 2# cohesion index G value: 80≤G<85, vitrinite average maximum reflectance Rmax is 1.159~1.268 , 40Kg small coke oven experiment thermal reactivity CRI≤25%, post-reaction strength CSR≥65%...

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Abstract

The invention relates to a method for coking coal blending with high volatile content, and belongs to the technical field of coking coal blending. Including mixing each single type of coking coal, single type of coking coal includes: gas coal, gas fat coal, 1 / 3 coking coal, fat coal, coking coal, lean coal and lean coal, and the improvement is: each single type The ratio of coking coal is as follows: gas coal 0-5%, gas-fertilized coal 15%-23%, fat coal 0-8%, 1 / 3 coking coal 19-28%, coking coal 30%-48%, Lean coal 8-25%, lean coal 0-7%. The invention can control the volatile content of blended coal at 30% to 31%, and the post-reaction strength CSR is ≥ 66%, meeting the smelting requirements of blast furnaces with a size of 2000m3 and above; avoiding the serious decline in the quality of coke produced due to the increase in the proportion of gas coal and lean coal, At the same time, the amount of coke oven gas generation and the yield of chemical products have increased significantly, achieving a win-win effect of reducing coke output and increasing the profit of subsequent products on the premise of ensuring coke quality.

Description

technical field [0001] The invention relates to a method for coking coal blending with high volatile content, and belongs to the technical field of coking coal blending. Background technique [0002] With the development of large-scale blast furnaces, higher requirements are put forward for the quality of coke, and the thermal reactivity and post-reaction strength indicators of coke are more concerned than ever. Batch coal is the raw material for coke production. It is made of single coking coals of different properties in a certain proportion. The properties of these single coals are quite different, and they play different roles in the coking process, and their prices also vary greatly. [0003] my country's coking coal is mainly divided into gas coal, gas-fat coal, 1 / 3 coking coal, fat coal, coking coal, lean coal and lean coal. Except for gas coal and lean coal, other coal types are commonly used for coking coal blending. kind. The blending ratio of each single type of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10B57/04
Inventor 韩健郭强冯天伟王敬坡孟兆利张长力王宏宇王清伟
Owner HBIS COMPANY LIMITED HANDAN BRANCH COMPANY
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