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A method for preparing metallurgical coke

A technology of metallurgical coke and coke CDQ, which is applied in coke ovens, products, reagents, etc., can solve the problems of difficult cleaning and selection of coke, use restrictions, and difficult processing, so as to improve product index performance, increase controllability, and realize The effect of resource utilization without residue

Active Publication Date: 2021-10-22
ANGANG STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, although the coking coal types are complete, the distribution is very uneven.
In particular, coking coal and fat coal, the main coking coal species for coal blending and coking, account for a relatively small proportion of China's coking coal resources. High-quality coking coal and fat coal account for less than 6% and 3% of my country's proven coal resource reserves. The limited main coking coal also includes a large number of high-ash, high-sulfur, difficult-to-wash coals that are not easily used for coking, and the current environmental protection problems faced by coking production have also restricted the use of high-sulfur coal.
The follow-up treatment of these wastes has problems such as difficult treatment, low added value, strict requirements for emission standards, and high treatment costs.

Method used

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  • A method for preparing metallurgical coke

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A method of preparing metallurgical coke, comprising:

[0024] 1) Raw materials are mixed coal, waste resin, CDQ dust removal powder; waste resin is filter resin after use, waste resin index requirements: moisture less than 14.5%, ash content 2.5%-5%, volatile content 70%-77% , Sulfur content is 0.2%-0.5%, CDQ dust removal powder index requirements: moisture is less than 1%, ash content is 10%-13%, volatile content is 1%-3%, sulfur content is 0.5-0.9%;

[0025] 2) Centrally recover the waste resin, and carry out grinding treatment through crushing equipment such as a pulverizer or a ball mill, and the pulverization treatment makes the particle size less than 3mm;

[0026] 3) According to the mass ratio of 1:1, fully mix the waste resin and CDQ dust removal powder, formulate and make balls, the diameter of the balls is 1-3cm, the index of the mixed balls is: the water content is less than 8%-11%, A d 4%-7%, V d 20%-22%, S t，d 0.5-0.7%;

[0027] 4) Grinding and mixing...

Embodiment 2

[0030] A method of preparing metallurgical coke, comprising:

[0031] 1) Raw materials are mixed coal, waste resin, CDQ dust removal powder; waste resin refers to petrochemical plastic resin, waste resin index requirements: moisture less than 14.5%, ash content 2.5%-5%, volatile content 70%-77% , Sulfur content is 0.2%-0.5%, CDQ dust removal powder index requirements: moisture is less than 1%, ash content is 10%-13%, volatile content is 1%-3%, sulfur content is 0.5-0.9%;

[0032] 2) Centrally recover the waste resin, and carry out grinding treatment through crushing equipment such as a pulverizer or a ball mill, and the pulverization treatment makes the particle size less than 3mm;

[0033] 3) According to the mass ratio of 1:1, fully mix the waste resin and CDQ dedusting powder, formulate and make balls, the diameter of the balls is 1-3cm, and the indicators of the mixed balls are: the water content is less than 8%-11%, and the ash content is 4 %-7%, volatile content 20%-22%...

Embodiment 3

[0037] A method of preparing metallurgical coke, comprising:

[0038] 1) The raw materials are mixed coal, waste resin, CDQ dust removal powder; the waste resin is chelating resin, and the waste resin index requirements: moisture content is less than 14.5%, ash content is 2.5%-5%, volatile content is 70%-77%, The sulfur content is 0.2%-0.5%, and the index requirements for CDQ dust removal powder: moisture content is less than 1%, ash content is 10%-13%, volatile content is 1%-3%, and sulfur content is 0.5-0.9%;

[0039] 2) Centrally recover the waste resin, and carry out grinding treatment through crushing equipment such as a pulverizer or a ball mill, and the pulverization treatment makes the particle size less than 3mm;

[0040] 3) According to the mass ratio of 1:2, fully mix the waste resin and CDQ dust removal powder, formulate and make balls, the diameter of the ball is 1-3cm, the index of the mixed ball is: the water content is less than 8%-11%, and the ash content is 4...

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Abstract

The invention relates to a method for preparing metallurgical coke. 1) The raw materials are blended coal, waste resin, and CDQ dust removal powder; 2) The waste resin is recovered in a concentrated manner, and the particle size is made to be less than 3mm by grinding; 3) According to the ratio of 1:1-1 The mass ratio of 1:5 is to fully mix the waste resin and CDQ dust removal powder, and make balls with a ball diameter of 1-3cm; The average maximum reflectance of the plastid is not less than 45% in the range of 1.05%-1.35%. 5) The mixed balls of waste resin and CDQ coke powder are mixed with blended coal for coking in the coke oven. The mixed balls The mass percentage allocated is 1%-3%. The invention realizes the resource utilization of carbon-containing solid waste in iron and steel enterprises, realizes the complete resource utilization of the waste resin according to the characteristics of low ash, low sulfur, and high iron, and at the same time effectively improves the coke through its reasonable allocation in the coal blending and coking scheme. The effect of quality indicators.

Description

technical field [0001] The invention relates to the coke field, in particular to a method for preparing metallurgical coke. Background technique [0002] my country is rich in coal resources, but the proportion of coking coal resources is not high. At the same time, although the coking coal coal types are complete, the distribution is very uneven. In particular, coking coal and fat coal, the main coking coal species for coal blending and coking, account for a relatively small proportion of China's coking coal resources. High-quality coking coal and fat coal account for less than 6% and 3% of my country's proven coal resource reserves. The limited main coking coal also includes a large number of high-ash, high-sulfur, difficult-to-wash coals that are not easily used for coking, and the current environmental protection problems faced by coking production have also restricted the use of high-sulfur coal. At present, the shortage of high-quality coking coal and fat coal coking ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10B53/00C10B53/07C10B53/04
CPCC10B53/00C10B53/04C10B53/07Y02P20/143
Inventor 朱庆庙庞克亮董刚甘秀石王超杜庆海刘冬杰王旭栗红武吉
Owner ANGANG STEEL CO LTD