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A coking coal blending method in which waste plastics participate in the preparation of metallurgical coke

A technology of metallurgical coke and waste plastics, which is applied in the field of coking coal blending and coking coal blending in the production of metallurgical coke, and can solve the problems of poor coking performance and large proportion of use

Active Publication Date: 2021-07-06
ANGANG STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a coking coal blending method in which waste plastics participate in the preparation of metallurgical coke. In the coal blending scheme, part of waste plastics and high-sulfur, high-deterioration and weakly cohesive coking coal are added. By making full use of waste plastics, low ash, low Sulfur and caking properties Solve the problem that high sulfur, high metamorphism and weak caking coking coal cannot be used in large proportion due to poor coking performance, optimize coal blending structure, reduce coal blending cost, and produce qualified metallurgical coke

Method used

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  • A coking coal blending method in which waste plastics participate in the preparation of metallurgical coke
  • A coking coal blending method in which waste plastics participate in the preparation of metallurgical coke
  • A coking coal blending method in which waste plastics participate in the preparation of metallurgical coke

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Effect test

Embodiment 1

[0016] 1. According to the quality requirements of coke production, the customized coal blending plan is as follows: 1 / 3 coking coal: 15%, fat coal: 15%, coking coal: 30%, lean coking coal: 5%, high sulfur and high metamorphic degree weak caking coking coal 20 %; waste plastic: 15%. Mixed coal is formulated in proportion. The crushed fineness R of the mixed coal is 72%, the ash content is 9.74%, the sulfur content is 0.78%, the Gibsonian fluidity is 486ddpm, the average value of the maximum reflectance of vitrinite is 1.37%, and the active-inert ratio of coal rock reaches 3.55.

[0017] 2. Among them, the total mass proportion of weakly caking coal with high sulfur metamorphism degree and waste plastics is 35%, and the mass ratio of the amount of weakly caking coal with high sulfur metamorphism degree and waste plastics is 4 / 3.

[0018] 3. Among them, the ash content A of coking coal with high sulfur and high metamorphism degree and weak caking d 9.4%, Volatile V daf 18%,...

Embodiment 2

[0023] 1. According to the quality requirements of coke production, the customized coal blending plan is as follows: 1 / 3 coking coal: 12%, fat coal: 20%, coking coal: 35%, lean coking coal: 3%, high sulfur and high metamorphic degree weak caking coking coal 18 %; waste plastic: 12%. Mixed coal is formulated in proportion. The crushed fineness R of the mixed coal is 70.2%, the ash content is 9.65%, the sulfur content is 0.76%, the Kiwi fluidity is 512ddpm, the average value of the maximum reflectance of vitrinite is 1.35%, and the active-inert ratio of coal rock reaches 3.73.

[0024] 2. Among them, the total mass ratio of weakly caking coal with high sulfur metamorphism degree and waste plastics is 30%, and the mass ratio of the amount of weakly caking coal with high sulfur metamorphism degree and waste plastics is 3 / 2.

[0025] 3. Among them, the ash content A of coking coal with high sulfur and high metamorphism degree and weak caking d 9.4%, Volatile V daf 18%, Sulfur ...

Embodiment 3

[0030] 1. According to the quality requirements of coke production, the customized coal blending plan is as follows: 1 / 3 coking coal: 10%, fat coal: 10%, coking coal: 30%, lean coking coal: 5%, high sulfur and high metamorphic degree weak caking coking coal 25 %; waste plastic: 20%. Mixed coal is formulated in proportion. The crushed fineness R of the mixed coal is 70.2%, the ash content is 9.65%, the sulfur content is 0.76%, the Kiwi fluidity is 512ddpm, the average value of the maximum reflectance of vitrinite is 1.35%, and the active-inert ratio of coal rock reaches 3.73.

[0031] 2. Among them, the total mass of weakly caking coal with high sulfur metamorphism degree and waste plastics accounts for 30%, and the mass ratio of the amount of weakly caking coal with high sulfur metamorphism degree and waste plastics is 5 / 4.

[0032] 3. The crushing fineness of waste plastics is all below 5mm, and the mass percentage of fineness<2mm is 74%.

[0033] 4. Among them, the ash con...

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Abstract

The invention discloses a coking coal blending method in which waste plastics participate in the preparation of metallurgical coke. By blending part of waste plastics, the proportion of high-sulfur, high-deterioration and weakly cohesive coking coal is increased, and qualified metallurgical coke is produced. The blended coal group Sub-mass percentages: 1 / 3 coking coal: 6%-18%, fat coal: 11%-27%, coking coal: 24%-40%, lean coking coal: 3‑18%, high-sulfur high-metamorphism weakly caking coal : 15% to 25%, waste plastics: 3% to 25%. The invention solves the problem that high sulfur, high metamorphism and weak cohesive coking coal cannot be used in a large proportion due to poor coking performance by making full use of the characteristics of low ash, low sulfur and cohesiveness of waste plastics, optimizes the coal blending structure, reduces the cost of coal blending, and produces qualified Metallurgical coke.

Description

technical field [0001] The invention belongs to the technical field of metallurgical raw materials and pretreatment, and relates to coking coal blending technology, in particular to a method of rationally controlling the coal blending scheme, adding waste plastics and low-cost high-sulfur, high-deterioration weakly cohesive coking coal to reduce the amount of main coking coal A coking coal blending method for the production of metallurgical coke. Background technique [0002] Coke, as a raw material for ironmaking in my country, will not change in recent decades. my country is rich in coal resources, but the regional distribution is very uneven, and the regional differences of coal types are also very large. There are many deficiencies in the coking of a single type of coal. In addition, with the development of the iron and steel industry, the amount of coal used is increasing year by year. In order to effectively and rationally utilize coal resources, solve the problems exi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10B57/04
CPCC10B57/04
Inventor 王超庞克亮谭啸甘秀石朱庆庙张军刘冬杰蔡秋野
Owner ANGANG STEEL CO LTD
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