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Method for producing high-strength coke

A manufacturing method and high-strength technology, applied in coking ovens, petroleum industry, etc., can solve problems such as depletion of strong caking coal

Active Publication Date: 2014-01-01
NIPPON STEEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, high-quality strong caking coal has been depleted as a resource over a long period of time

Method used

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  • Method for producing high-strength coke
  • Method for producing high-strength coke
  • Method for producing high-strength coke

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0101] Using the blended coal Y1 shown in Table 3, the classification point is specified as 0.3mm, and the classification is divided into fine coal and coarse coal. Under the condition that the pulverized coal ratio F is 20% by mass, and the addition ratio (ratio to coal) C of caking auxiliary filler to the whole blended coal is 3% by mass, the fine coal and coarse coal are adjusted respectively. Ratio of bonding auxiliary filler. These pulverized coal and coarse coal are mixed and dry-distilled in a coke oven to produce coke. These conditions and coke strength DI 150 15 The measurement results are shown in Table 5.

[0102] The expansion characteristics (specific volume) of the pulverized coal and coarse-grained coal of the blended coal Y1 were measured, and the results are as follows Figure 6 As shown, the expansion characteristics of pulverized coal are roughly the same as those of coarse coal. Therefore, in Example 1 of Table 5, caking auxiliary fillers are added in ...

Embodiment 2

[0107] Using the mixed coal X3 shown in Table 1, the classification point is specified as 0.3mm, and the classification is divided into fine coal and coarse coal. Under the condition that the ratio F of finely divided coal is 20% by mass, and the addition rate C of caking auxiliary filler to the total blended coal is 3% by mass, the ratios of caking auxiliary filler loaded on finely pulverized coal and coarse coal are adjusted. . These pulverized coal and coarse coal are mixed and dry-distilled in a coke oven to produce coke. These conditions and coke strength DI 150 15 The measurement results are shown in Table 6.

[0108] The expansion characteristics (specific volume) of the pulverized coal and coarse-grained coal of the blended coal X3 were measured, and the results are as follows Figure 7 As shown, the expansion characteristics of pulverized coal are different from those of coarse coal. if from Figure 7 The specific volume of the pulverized coal when the caking au...

Embodiment 3

[0115] The blending coal X3 is used, the classification point is specified as 0.3mm, and the classification is divided into fine coal and coarse coal. Adjust the ratio of the caking auxiliary filler loaded on the fine coal and the coarse coal under the condition that the pulverized coal ratio F is 30% by mass, and the caking auxiliary filler addition ratio C to the whole coal blend is 2.4% by mass . These pulverized coal and coarse coal are mixed and dry-distilled in a coke oven to produce coke. These conditions and coke strength DI 150 15 The measurement results are shown in Table 7.

[0116] The expansion characteristics (specific volume) of the pulverized coal and coarse-grained coal of the blended coal X3 were measured, and the results are as follows Figure 7 As shown, the expansion characteristics of pulverized coal are different from those of coarse coal. if from Figure 7 The specific volume of the pulverized coal when the caking auxiliary filler is added is dete...

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Abstract

A method for producing high-strength coke using a starting material obtained by adding a binder supplement to coal blends classified into fine-powdered coal and coarse-grained coal and kneading the resulting mixture, wherein a change in the rate of expansion of the fine-powdered coal and a change in the rate of expansion of the coarse-grained coal when the binder supplement is added are obtained, respectively, for every kind of the coal blends; and the binder supplement is added by adjusting the blending ratio of the binder supplement to the fine-powdered coal and the coarse-grained coal such that a difference in the rate of expansion between the fine-powdered coal and the coarse-grained coal when the binder supplement is added is smaller than a predetermined value.

Description

technical field [0001] The present invention relates to a method for producing high-strength coke by adding caking auxiliary fillers to coal classified as pulverized coal and coarse coal. [0002] This application claims priority based on Japanese Patent Application No. 2008-326387 for which it applied in Japan on December 22, 2008, and uses the content here. Background technique [0003] In the production of coke, if pulverized coal is contained in the coking coal, there will be a problem that the pulverized coal will generate dust when the coking coal is transported to the coke oven, or the pulverized coal will be entrained with the gas or tar generated in the coke oven. various problems, etc. [0004] Therefore, the method of classifying coking coal into fine-grained coal with a particle size that is easy to generate dust and coarse-grained coal with a particle diameter larger than fine-grained coal has been conventionally carried out, and adding caking auxiliary fillers...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10B57/06
CPCC10B57/06C10B57/04
Inventor 野村诚治有马孝铃木丰石原口裕二
Owner NIPPON STEEL CORP