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Coal blending method of 7.63m coke oven during starting work

A technology of coal blending and coke oven, which is applied in the field of coking and can solve the problems of lack of research on reasonable coal blending schemes

Inactive Publication Date: 2010-01-13
武汉钢铁有限公司
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Problems solved by technology

However, there is a lack of research at home and abroad on the method used to determine the reasonable coal blending scheme for the start-up of 7.63m coke ovens

Method used

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  • Coal blending method of 7.63m coke oven during starting work

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Embodiment Construction

[0028] Such as figure 1 Shown 7.63 meters coke oven start-up coal blending method, it comprises the following steps:

[0029] Step (1), measure X 6 , b 6 steps; the X 6 Shrinkage of coal blending for 6m coke oven, b 6 The expansion degree of coal blending for 6m coke oven;

[0030] Step (1.1), the step of measuring the degree of shrinkage and the degree of expansion of each 6-meter coke oven coal blending over two months;

[0031] Step (1.2), the step of calculating the average value, get X 6 and b 6 .

[0032] According to the coal blending designed by the previous 6-meter coke oven coal blending institute, a small sample was made, and X was determined. 6 , b 6 It can be determined in the laboratory by using the method specified in GBT 479-2000 "Measurement Method for Colloidal Layer Index of Bituminous Coal" or GBT 5450-1997 "Aoa Dilatometer Test for Bituminous Coal". Step (1) can also directly use the test data of the 6-meter coke oven coal blending in recent mont...

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Abstract

The invention relates to a coal blending method of a 7.63m coke oven during starting work, which comprises of the following steps: measuring X6 and b6; designing the coal blending of the 7.63m coke oven during starting work; measuring and judging; judging whether X7 and b6 are both in a range and carrying out following options; completing. The X6 is the shrinking measure of the coal blending of a 6m coke oven and the b6 is the swelling capacity of the coal blending of the 6m coke oven; if the X7 and the b7 are both in the range, the next step is carried, or the X7 and the b7 are not both in the range, the step (2) is carried out again. The method of the invention ensures that the coke oven has enough shrinkage and proper internal swelling power in a coking process to make for the movable contact of coal particles and coking, has small integral external swelling, ensures the smooth coke pushing of a new coke oven during starting work, prevents oven walls from damage, and obtains coke with relatively good quality.

Description

technical field [0001] The invention relates to the technical field of coking, in particular to a coking coal blending method. Background technique [0002] Large-scale coke ovens have been the general trend of coking technology development in the world since the 1970s. Domestic companies such as Yankuang, Maanshan Iron and Steel, Taiyuan Iron and Steel, and Wuhan Iron and Steel have introduced 7.63-meter super-large coke oven technology. 7. The increase of the height of the 7.63m coke oven, the increase of the bulk density of the coal charge, and the widening of the carbonization chamber will have a certain impact on the coking process. At the beginning of the 7.63-meter coke oven, the key point is to ensure smooth coke pushing and furnace body maintenance. Only under this premise can better coke quality be guaranteed. The coal blending structure in the initial stage of operation should be different from that of normal production. However, there is a lack of research at ho...

Claims

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Application Information

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IPC IPC(8): C10B57/00
Inventor 薛改凤陈鹏鲍俊芳魏松波常红兵张雪红项茹蒋冬林宋子逵张前香刘尚超
Owner 武汉钢铁有限公司
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