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Coking coal blending method for producing high-heat strength coke

A strength and coke technology, applied in coking ovens, petroleum industry, etc., can solve problems such as improper selection of parameters and difficulties in popularization, and achieve the effects of overcoming blindness, strong practicability, and easy application

Inactive Publication Date: 2009-02-04
SHANGHAI MEISHAN IRON & STEEL CO LTD
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AI Technical Summary

Problems solved by technology

It mainly solves the technical problems such as the improper selection of parameters in the existing coal blending method and the difficulty in popularizing the application of active components and inert components to ensure the caking properties of coal blending.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] Several domestic single types of coal are used for each blending ratio, and the quality indicators of each type of coal used are shown in Table 1.

[0014] Table 1 Single coal analysis data table

[0015]

[0016] Using the above coal types, 7 coal types are selected each time for coal blending and coking, and the blending scheme is shown in Table 2.

[0017] Table 2 Coal Blending Ratio Scheme Table

[0018]

[0019] Through the above coal blending ratio scheme, the blended coal data obtained are shown in Table 3.

[0020] Table 3 Blending coal quality data table

[0021]

[0022] Using the above coal blending, through the traditional 4.3m coke oven for coal blending coking, the coke quality data obtained are shown in Table 4.

[0023] Table 4 Coke quality analysis data indicators

[0024]

[0025] It can be seen from Ta...

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Abstract

The present invention relates to a method of coal blending for coking, in particular to a method of coal blending for coking, by which high-heat-intensity coke is produced. The present invention mainly resolves the technical problems of the prior coal blending method, such as inappropriate parameter selection and difficulty in promotion caused by the application of active components and inert components in ensuring the caking property of coal blending. The technical scheme of the method is as follows: the method of coal blending for coking, by which high-heat-intensity coke is produced, adopts rich coal, coking coal, gas coal and 1 / 3 coking coal, which are blended together; after blending, the microcosmic strong caking ratio is kept larger than 55 percent; the maximum thickness of the gelatinous layer is between 14mm and 18mm; and the caking index is between 80 and 85. The method is mainly used for the production of high-heat-intensity coke.

Description

Technical field: [0001] The invention relates to a coking coal blending method, in particular to a coking coal blending method for producing high thermal strength coke. Background technique: [0002] my country's coking technology usually uses bituminous coal with different properties such as gas, fertilizer, coke, and lean to make coke, which can improve the bonding process in the coking process and ensure a uniform structure of coke. The coal blending technology adopted by each enterprise is usually an empirical coal blending method based on the properties of the coking coal used by each enterprise. The empirical coal blending method is suitable for situations where the coal source is stable and the coal quality does not fluctuate greatly. When coal quality changes or the coal quality fluctuates greatly, the blindness of empirical coal blending will affect the quality of coal blending, resulting in fluctuations in coke quality, which is very unfavorable to production. [...

Claims

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Application Information

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IPC IPC(8): C10B57/04
Inventor 任学延张文成王春花时建
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD
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