Coke coal blending ratio and coking method thereof

A technology of coal blending ratio and coke, which is applied in coking ovens, petroleum industry, etc., and can solve problems such as not being able to meet the requirements of large-scale steelmaking blast furnaces

Inactive Publication Date: 2008-03-05
SHANXI TAIGANG STAINLESS STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The strength index is relatively high, and the process technology of the 7.63m coke oven is also different from the conventional coke oven below 6m. The existing known coal blending ratio scheme produces coke M40 of 77-78.5, M...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] The coke coal blending ratio (weight) of the present embodiment is:

[0078] 21.5 parts of fat coal, 52.5 parts of coking coal, 17.5 parts of 1 / 3 coking coal, and 10 parts of lean coal.

[0079] The particle size is not more than 3mm;

[0080] The quality parameters of the above four components are:

[0081] Fat coal

[0082] Ash content 8.6%-9.6%, volatile content 26%-28%, sulfur content 1.0%-1.1%,

[0083] G 86 Y / mm 27;

[0084] coking coal

[0085] Ash content 8.2%-9.4%, volatile matter 22%-23%, sulfur content 0.9%,

[0086] G 82 Y / mm 16;

[0087] 1 / 3 coking coal

[0088] Ash content 8.4%-9.4%, volatile content 34%-35%, sulfur content 0.64%,

[0089] G 84 Y / mm 21;

[0090] lean coal

[0091] Ash 8.5%-9.0%, volatile 18-20%, sulfur 0.6%,

[0092] G 41 Y / mm 6.

[0093] The single vitrinite reflectance of the above four components is:

[0094] Fat coal

[0095] R min 1.10 R max 1.65R o max 1.501

[0096] Measured points 156 standard deviation, S 0.0...

Embodiment 2

[0123] The coke coal blending ratio (weight) of the present embodiment is:

[0124] Fat coal 22.5, coking coal 53.2, 1 / 3 coking coal 16, lean coal 8.3.

[0125] The quality parameters of the above four components are:

[0126] Fat coal

[0127] Ash content 8.8%-9.6%, volatile matter 26%-27%, sulfur content 1.1%-1.2%,

[0128] G 87 Y / mm 26;

[0129] coking coal

[0130] Ash content 8.6%-9.4%, volatile matter 22%-23%, sulfur content 0.9%,

[0131] G 83 Y / mm 17;

[0132] 1 / 3 coking coal

[0133] Ash content 8.4%-9.4%, volatile content 34%-35%, sulfur content 0.64%,

[0134] G 83 Y / mm 21;

[0135] lean coal

[0136]Ash 8.6%-9.2%, volatile 19-20%, sulfur 0.5%,

[0137] G 42 Y / mm 5.

[0138] The single coal vitrinite reflectance of the four components in this embodiment and the coal rock microscopic composition of the single coal are the same as those in the first embodiment.

[0139] Matching coal quality:

[0140] Ash 9.3%-9.4%, Sulfur 0.68%-0.90%, Volatile 23%-24%

...

Embodiment 3

[0143] The coke coal blending ratio (weight) of the present embodiment is:

[0144] 23 parts of fat coal, 55 parts of coking coal, 20 parts of 1 / 3 coking coal, and 12 parts of lean coal.

[0145] The particle size is not more than 3mm;

[0146] The quality parameters of the above four components are:

[0147] Fat coal

[0148] Ash content 8.6%-9.6%, volatile content 26%-27%, sulfur content 1.1%-1.2%,

[0149] G 85 Y / mm 26;

[0150] coking coal

[0151] Ash content 8.4%-9.4%, volatile matter 22%-23%, sulfur content 0.86%,

[0152] G 80 Y / mm 15;

[0153] 1 / 3 coking coal

[0154] Ash content 8.5%-9.4%, volatile content 34%-35%, sulfur content 0.65%,

[0155] G 82 Y / mm 20;

[0156] lean coal

[0157] Ash content 8.6%-9.2%, volatile content 19-20%, sulfur content 0.56%,

[0158] G 42 Y / mm 5.

[0159] The single coal vitrinite reflectance of the four components in this embodiment and the coal rock microscopic composition of the single coal are the same as those in the fi...

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Abstract

The present invention is one kind of coke coal blending ratio and coking process. The coke coal consists of fat coal 20-23 weight portions, coking coal 50-55 weight portions, 1/3 coking coal 15-20 weight portions, and lean coal 8-12 weight portions. The compounded coal has the quality including ash content 9-10 %, sulfur content 0.65-0.73 %, volatile component 24-26 %, G value 83-88, Ymm of 16-20, and Xmm of 20-30. The quality parameters, vitrinite reflectances and microscopic ingredients of the said four kinds of coal are specifically defined. During the coking process, the mixed coal material is sintered at 1200 deg.c for not less than 16 hr. The present invention can obtain coke with high strength.

Description

technical field [0001] The invention relates to a coke coal blending ratio and a method for making coke. Background technique [0002] Coke is an essential raw material for steelmaking. The quality of coke not only affects the quality of steel, but also directly affects the process and equipment of the steel. In coking production, in order to produce coke that meets user requirements, each single coking coal needs to be blended in a certain proportion according to its nature and quality. Commonly used coking coal is generally divided into gas coal, fat coal, coking coal, Lean coal, 1 / 3 coking coal and lean coal and other types. 1000m 3 -2000m 3 The general requirements for blast furnace coke strength indicators are: cold mechanical strength M4076-81%, M107.0-9.0%, hot performance indicators: reactivity (CRI) ≤ 30%, post-reaction strength (CSR) ≥ 50%. Domestic conventional coke ovens are all below 6.0m, and the coke strength indicators are generally within the above range...

Claims

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Application Information

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IPC IPC(8): C10B57/04
Inventor 齐洪涛冯焕林蔡湄夏王洪兴徐君白金锋
Owner SHANXI TAIGANG STAINLESS STEEL CO LTD
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