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A kind of mixed coal for tamping coke and its production process

A production process and coal blending technology, which is applied in coking ovens, petroleum industry, special forms of dry distillation, etc., can solve the problems of low lumpiness, high strength of tamped coke, etc., and achieve the effect of convenient operation and simple production process

Active Publication Date: 2021-03-02
湖南华菱涟源钢铁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a blended coal for tamping coke, aiming to solve the technical problems of high strength and low lumpiness of tamping coke in the prior art, and to produce coke with high strength and large lumpiness

Method used

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  • A kind of mixed coal for tamping coke and its production process
  • A kind of mixed coal for tamping coke and its production process
  • A kind of mixed coal for tamping coke and its production process

Examples

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Embodiment 1

[0058] This embodiment provides a blended coal for stamping coke, including the following components in weight percentage: low-sulfur coking coal-6%, low-sulfur coking coal-28%, high-sulfur coking coal 25%, low-sulfur fertilizer coal 7%, high-sulfur fertilizer 7% coal, 3% extra-high-sulfur fertile coal, 12% low-sulfur coking coal, 12% low-sulfur gas coal, 7% low-sulfur gas coal, 10% low-sulfur lean coal, and 3% extra-high-sulfur lean coal %.

[0059] The quality indicators of the above-mentioned coal types and blended coals are shown in Table 3.

[0060] table 3

[0061]

[0062] The present embodiment also provides a kind of above-mentioned stamping coke production process, comprises the following steps:

[0063] S1. Preparation of blended coal: Prepare the raw materials in the blended coal for tamping coke, pre-crushing low-sulfur gas coal 1, low-sulfur gas coal 2, ultra-high-sulfur fertile coal and ultra-high-sulfur lean coal until the particle size >5mm coal is pulve...

Embodiment 2

[0067] The present embodiment provides a blended coal for tamping coke, including the following components in weight percent: low-sulfur coking coal-8%, low-sulfur coking coal-28%, high-sulfur coking coal 28%, low-sulfur fertilizer coal 8%, high-sulfur fertilizer Coal 5%, low sulfur 1 / 3 coking coal 11%, low sulfur gas coal 13%, low sulfur gas coal 2 8%, low sulfur lean coal 6%, extra high sulfur lean coal 5%.

[0068] Refer to the quality indicators in Example 1 for the quality indicators of the above-mentioned coal types and their blended coals.

[0069] The present embodiment also provides a kind of above-mentioned stamping coke production process, comprises the following steps:

[0070] S1. Preparation of blended coal: Prepare the raw materials in the blended coal for tamping coke, and pre-grind low-sulfur gas coal 1, low-sulfur gas coal 2 and ultra-high-sulfur lean coal until the coal with a particle size > 5mm is crushed to ≤ 5mm, and then put into 11 coal blending tubes...

Embodiment 3

[0074] The present embodiment provides a blended coal for stamping coke, comprising the following components in weight percent: low-sulfur coking coal-6%, low-sulfur coking coal-28%, high-sulfur coking coal 25%, low-sulfur fertilizer coal 8%, high-sulfur fertilizer 8% coal, 3% extra-high-sulfur fertile coal, 12% low-sulfur coking coal, 10% low-sulfur gas coal, 7% low-sulfur gas coal, 11% low-sulfur lean coal, and 2% extra-high-sulfur lean coal %.

[0075] Refer to the quality indicators in Example 1 for the quality indicators of the above-mentioned coal types and their blended coals.

[0076] The present embodiment also provides a kind of above-mentioned stamping coke production process, comprises the following steps:

[0077] S1. Preparation of blended coal: Prepare the raw materials in the blended coal for tamping coke, pre-crushing low-sulfur gas coal 1, low-sulfur gas coal 2, ultra-high-sulfur fertile coal and ultra-high-sulfur lean coal until the particle size >5mm coal...

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Abstract

The invention provides a blended coal for stamping coke and its production process. The blended coal for stamping coke includes the following components in weight percentage: low-sulfur coking coal-5-15%, low-sulfur coking coal-23-10%, high-sulfur coking coal Coking coal 20-30%, low-sulfur fertile coal 5-12%, high-sulfur fertile coal 5-10%, ultra-high-sulfur fertile coal 0-5%, low-sulfur 1 / 3 coking coal 5-15%, low-sulfur gas coal 5-15%, low-sulfur gas coal 5-12%, low-sulfur lean coal 5-12%, ultra-high-sulfur lean coal 0-10%. The blended coal for tamping coke provided by the present invention includes a variety of coal types with different characteristics. The above-mentioned coal types are mixed in a specific proportion to form a blended coal. By adopting the above-mentioned coal blending structure, the coke produced can fully meet the requirements of high-strength and large-size coke. The required index, the average block degree can be increased by 1.5mm, which fully meets the requirements of 3200m 3 Various quality indicators required by a large-scale blast furnace.

Description

technical field [0001] The invention belongs to the technical field of coking coal blending, in particular to a blending coal for stamping coke and a production process thereof. Background technique [0002] In the iron and steel industry, coke not only plays the role of providing heat source, reducing agent and carburizing agent in the blast furnace smelting process, but also supports the blast furnace material column. As the blast furnace smelting continues to intensify and the coke ratio is greatly reduced, the role of coke as a supporting framework is becoming more and more important. Good thermal properties such as dissolution also require coke to have a suitable lumpiness and uniformity coefficient. [0003] During the coking process of coal in the coke oven carbonization chamber, due to the influence of temperature gradient and shrinkage stress, the whole coke cake is divided into coke pieces of different sizes by many longitudinal and transverse cracks. The process...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10B53/04
CPCC10B53/04
Inventor 彭陈辉徐珍石志强洪泽周尽晖欧阳曙光易妮史世庄周阳
Owner 湖南华菱涟源钢铁有限公司