Production method of metallurgy coke

A production method and technology of metallurgical coke, applied in coke ovens, special forms of dry distillation, petroleum industry, etc., can solve the problems of reliability impact, increased transportation costs, increased coking time, etc., to achieve easy industrial production, save equipment and processes, The effect of increasing the total output of coke oven

A production method and technology of metallurgical coke, applied in coke ovens, special forms of dry distillation, petroleum industry, etc., can solve the problems of reliability impact, increased transportation costs, increased coking time, etc., to achieve easy industrial production, save equipment and processes, The effect of increasing the total output of coke oven

CN104073274AActive Publication Date: 2014-10-01ANGANG STEEL CO LTD
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  • Production method of metallurgy coke

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Experimental program
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Effect test

Embodiment 1

[0026] Proportion of mixed coal: 10% gas coal, 1 / 3 coking coal 25%, fat coal 25%, coking coal 30%, lean coal 10%, the proportion of hot briquette in furnace coal is 40%, particle size 3 ;Stay under the pressure of the hot pressing operation for 5 seconds; The diameter of the hot briquette is 30mm, and the height is 10mm; The reactivity of coke is 21.36%. Compared with the coke obtained by using the same coking process without pretreatment, the reactivity of coke is reduced by 8.75 percentage points; Compared with coke obtained by hot briquetting and using the same coking process, the strength of coke after reaction increases by 11.69 percentage points.

Embodiment 2

[0028] Mixed coal ratio: gas coal 5%, 1 / 3 coking coal 25%, fat coal 30%, coking coal 30%, lean coal 10%, the proportion of hot briquetting coal in the furnace is 10%, particle size 3 ;Stay under the pressure of the hot pressing operation for 5 seconds; the diameter of the hot briquette is 40mm, and the height is 30mm; the hot briquette is mixed with the blended coal and loaded into a top-loading coke oven for coking. The reactivity of the coke is 23.91%. Compared with the coke obtained by using the same coking process without pretreatment, the reactivity of the coke is reduced by 5.65 percentage points; Compared with coke obtained by hot briquetting and using the same coking process, the strength of coke after reaction increases by 3.96 percentage points.

Embodiment 3

[0030] Mixed coal ratio: gas coal 10%, 1 / 3 coking coal 25%, fat coal 25%, coking coal 30%, lean coal 10%, the proportion of hot briquetting coal in the furnace is 20%, particle size 3 ;Stay under the pressure of the hot pressing operation for 5 seconds; The diameter of the hot briquette is 30mm, and the height is 10mm; The reactivity of coke is 23.94%. Compared with the coke obtained by using the same coking process without adding pretreatment, the reactivity of coke is reduced by 6.35 percentage points; Compared with coke obtained by hot briquetting and using the same coking process, the strength of coke after reaction increases by 8.29 percentage points.

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Abstract

The invention discloses a production method of metallurgy coke. The production method comprises a coal blending step and a coking step, and specifically comprises the following steps: mixing coals from a coal blending groove so as to obtain blended coal, transporting 10% to 40% of the mass of the blended coal into a hot-pressing device to carry out hot pressing so as to obtain hot-pressed blocks, crushing the hot-pressed blocks, blending the crushed blocks with the rest blend coal, and finally transporting the mixture into a coke oven to carry out coking; wherein the hot-pressing temperature is 300 to 650 DEG C, the hot-pressing pressure is 5-30 MPa, and the stay time under the hot-pressing operation is within 5 seconds. The technology operation method is simple and practical, effectively improves the coke quality on the basis that the ratio of the blended coal is not changed, reduces the reactivity of coke, increases the coke strength after the reactions, protects the high-quality coke, and reduces the coke production cost.

Description

technical field [0001] The invention belongs to the field of coal processing, and relates to the production technology of coal blending and coke, in particular to a production method of metallurgical coke. Background technique [0002] Although my country has a complete range of coking coal types, the distribution is very uneven. Coking coal and fat coal are the main types of coal for coke production. However, in China's coking coal resources, coking coal only accounts for less than 24%, and fat coal and gas-fired coal only account for 24%. About 13%, remove the part with high ash, high sulfur, difficult to wash, and cannot be used for coking. High-quality coking coal and fat coal account for less than 6% and 3% of the proven coal resource reserves. At present, the shortage of high-quality coking coal and fat coal has become an obstacle for some enterprises to ensure the quality of coke. [0003] In order to achieve the purpose of improving coke quality in the conventional b...

Claims

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Application Information

Patent Timeline
01 Oct 2014
Publication
CN104073274A
IPC
C10B53/08; C10B57/04
Inventors
唐复平; 庞克亮