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Method for preparing metallurgical coke

A technology for metallurgical coke and dry quenching, which is used in coke ovens, special forms of dry distillation, and petroleum industry. Product index performance and the effect of improving coke quality index

Active Publication Date: 2020-02-21
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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  • Method for preparing metallurgical coke

Examples

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. The method comprises the following steps: 1) taking blended coal, waste resin and dry quenching dedusting powder as raw materials; 2) intensively recovering the waste resin, and grinding the waste resin to make the particle size less than 3 mm; 3) fully mixing the waste resin with the dry quenching dedusting powder according to amass ratio of 1:1 to 1:5, and carrying out matching pelletizing to make the ball diameter be 1-3 cm; 4) respectively crushing and mixing various coal types in the blended coal, wherein the mass proportion of the average maximum reflectivity, in the interval range of 1.05-1.35%, of vitrinite in the blended coal is not lower than 45%; and 5) mixing the mixed balls of the waste resin and the dry quenching powder with the blended coal, and coking the obtained mixture in a coke oven, wherein the bending mass percentage of the mixed balls is 1-3%. The method achieves recycling of carbon-containing solid wastes of iron and steel enterprises, realizes complete recycling of the waste resin according to the characteristics of low dust, low sulfur and high iron of the waste resin, and achieves the effect of effectively improving the quality index of the coke through reasonable blending of the waste resin in a coal blending coking scheme.

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 Applications(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
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