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Coking coal blending method for producing high-heat strength coke

A strength and coke technology, applied in coke oven, petroleum industry, etc.

Inactive Publication Date: 2012-01-11
SHANGHAI MEISHAN IRON & STEEL CO LTD
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  • Abstract
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  • Claims
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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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  • Coking coal blending method for producing high-heat strength coke

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Experimental program
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Embodiment Construction

[0014] 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.

[0015] Table 1 Single coal analysis data table

[0016] coal type Fat coal 1 Fat coal 2 coking coal 1 coking coal 2 coking coal 3 gas coal 1 / 3 coking coal 1 1 / 3 coking coal 2 Ash, Ad, % 8.68 9.79 9.91 10.71 9.35 7.70 9.56 10.46 Sulfur content, St, d, % 1.58 0.94 0.40 0.42 0.82 0.69 0.33 0.43 Volatile matter, Vd, % 29.81 24.32 23.22 19.12 18.70 36.49 29.67 28.34 Adhesion index G 91 92 86 80 84 83 71 87 Maximum glue thickness Y, mm 26.9 24.5 17.8 13.4 13.9 11.8 11.4 17.6 Vitrinite random reflectance R0, % 0.927 1.146 1.193 1.408 1.439 0.679 0.735 0.999 Mixed coal single coal single coal Mixed coal Mixed coal Mixed coal single coal single coal Mixed coal

[0017] Using the above coal types, 7 coal typ...

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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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Patent Type & Authority Patents(China)
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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