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High-strength coke and coking method

A high-strength, high-strength coke technology, applied in the field of coal chemical industry, can solve the problems of low coke crushing strength and low-strength CSR, and achieve the effects of easy implementation, high strength and quality maintenance

Active Publication Date: 2022-01-25
SHANGHAI MEISHAN IRON & STEEL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The purpose of the present invention is to provide a high-strength coke and a coking method, which mainly solve the problem of low strength CSR and coke crushing strength M of coke produced under the condition of existing long coking time. 40 low technical problem; the coke produced by the present invention is a high-quality metallurgical coke, which meets the requirement of 4000m 3 and above blast furnace smelting needs

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with the examples, as shown in Table 1-Table 2.

[0036]A kind of high-strength coke, which is produced by coking by blending coal with the following mass percentages: 1 / 3 coking coal 15-20%, gas coal 12-17%, coking coal 36-42%, lean coal 4-7%, fat coal 22- 28%, high fluidity fat coal accounts for 40-60% of the total mass of fat coal, and the sum of the mass percentages of each component of blended coal is 100%.

[0037] The volatile matter V of the high fluidity fat coal of the embodiment of the present invention d The colloid layer thickness Y is 27mm, the fluidity LGMF is 4.18, and the softening temperature range is 110°C; the performance parameters of the coking coal used in the examples are shown in Table 1.

[0038] In the embodiment of the present invention, coking is carried out in a 7m top-loaded coal coke oven, and the coking time of the 7m coke oven is designed to be 22 hours; three proport...

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Abstract

The invention discloses high-strength coke and a coking method, and mainly solves the technical problems of low strength CSR and low crushing strength M40 of coke produced under the condition of long coking time in the prior art after reaction. According to the technical scheme, the high-strength coke is formed by mixing and coking the following blended coal in percentage by mass: 15-20% of 1 / 3 coking coal, 12-17% of gas coal, 36-42% of coking coal, 4-7% of lean coal and 22-28% of fat coal; the proportion of the high-fluidity fat coal in the total mass of the fat coal is 40-60%, and the sum of the mass percentages of the components of the blended coal is 100%; the volatile component Vd of the high-fluidity fat coal is 28-32%, the thickness Y of a gelatinous layer is 25-40mm, the fluidity LGMF is 4.0-4.8, and the soft curing temperature interval is 100-130 DEG C; and the post-reaction strength CSR of the coke is 68-72%, and the drum strength of the coke is 88-90%.

Description

technical field [0001] The invention relates to a coke and a coking method, in particular to a high-strength coke and a coking method, in particular to a high-strength coke produced under the condition of long coking time and a coking method, and belongs to the technical field of coal chemical industry. Background technique [0002] In recent years, as environmental protection requirements have become increasingly stringent, various regions have begun to implement coal restriction policies, and the amount of coal used for coking has been limited, which has prevented coking production from reaching the designed capacity. Since coke ovens cannot be shut down at any time, it is necessary to extend the coking time of coking. to achieve a production balance. [0003] The operation and management of coke ovens under long coking time is a difficult problem in the industry. Since the coke production process is a dry distillation process in which coal blending is isolated from the ai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B57/04C10B53/04
CPCC10B57/04C10B53/04
Inventor 张文成任学延黎鹏飞
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD
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