Industrial coal briquette and preparation method thereof

A technology for briquette and industry, applied in the field of industrial briquette and its preparation, can solve the problems of complex binder adding process, poor thermal strength of briquette, poor waterproof performance, etc., and achieves simple process, high waterproof performance and cost saving Effect

Active Publication Date: 2009-11-18
SHANXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Starch is used as a briquette binder, with less addition, low cost, and high strength of briquette products, but the briquette has poor thermal strength, poor waterproof performance, and the binder adding process is complicated at the same time. The binder used in Briquette as a binder is corn starch, and its production process is corn starch plus alkali and water, heated and stirred at 65-75°C for 35-45 minutes, and the starch paste made is then mixed with coal mix

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Raw material ratio: Gujiao pulverized coal 90g, Gujiao coal slime 30g, denatured corn starch 0.36g, borax 0.0036g, bentonite 2.4g, water 12g, methyl silicon alkoxide 0.6g

[0022] Production steps:

[0023] (1) 0.36g of binder modified cornstarch, 0.0036g of crosslinking agent borax and 2.4g of thermosetting agent bentonite are mixed uniformly in proportion;

[0024] (2) Take 90g of Gujiao pulverized coal and 30g of Gujiao coal slime and mix them evenly, then add the powder mixed in step (1) into the coal, stir and mix;

[0025] (3) Add 12g of water into the material mixed in step (2), stir and mix;

[0026] (4) Add 0.6 g of methyl silicon alkoxide to the material obtained in step (3), stir and mix evenly, cold-press the material at 20 MPa, and dry to obtain the product.

[0027] The resulting product testing results:

[0028] serial number

Embodiment 2

[0030] Raw material ratio: Yangcheng pulverized coal 120g, denatured corn starch 0.48g, borax 0.0048g, bentonite 4.8g, water 12.5g, acrylic acid 0.6g

[0031] Production steps:

[0032] (1) 0.48g of binder modified cornstarch, 0.0048g of crosslinking agent borax and 4.8g of thermosetting agent bentonite are mixed uniformly in proportion;

[0033] (2) Add the powder mixed in step (1) into 120g of Yangcheng pulverized coal, and stir and mix;

[0034] (3) Add 12.5g of water into the material mixed in step (3), stir and mix;

[0035] (4) Add 0.6 g of acrylic acid to the material obtained in step (3), stir and mix evenly, cold press the material at 20 MPa, and dry to obtain the product.

[0036] The resulting product testing results:

[0037] serial number

Embodiment 3

[0039] Raw material ratio: Jincheng pulverized coal 120g, denatured tapioca starch 0.72g, borax 0.0072g, bentonite 7.2g, water 14g, acrylic acid 0.6g

[0040] Production steps:

[0041] (1) binder modified tapioca starch 0.72g, crosslinking agent borax 0.0072g and thermosetting agent bentonite 7.2g are mixed in proportion;

[0042] (2) Add the powder mixed in step (1) into 120g Jincheng pulverized coal, stir and mix;

[0043] (3) Add 14g of water into the material mixed in step (2), stir and mix;

[0044] (4) Add 0.6 g of acrylic acid to the material obtained in step (3), stir and mix evenly, cold press the material at 20 MPa, and dry to obtain the product.

[0045] The resulting product testing results:

[0046] serial number

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Abstract

The invention provides an industrial coal briquette which comprises the following components according to weight by parts: 90 to 98 parts of coal, 0.25 to 1.0 part of caking agent, 0.0025 to 0.01 part of cross linker, 1.5 to 8 parts of hot-setter and 0.25 to 0.65 part of waterproof agent. The preparation method of the coal briquette is simple, a small amount of caking agent is used, and applicability is strong; the prepared product has the advantages of high dry and wet strength, favorable water resistance, favorable thermal stability and the like, burn-off rate of coal briquette is high, and the content of fume pollutants is low.

Description

technical field [0001] The invention relates to molded coal, in particular to an industrial molded coal and a preparation method thereof. Background technique [0002] Starch is used as a briquette binder, with less addition, low cost, and high strength of briquette products, but the briquette has poor thermal strength, poor waterproof performance, and the binder adding process is complicated at the same time. The binder used in Briquette as a binder is corn starch, and its production process is corn starch plus alkali and water, heated and stirred at 65-75°C for 35-45 minutes, and the starch paste made is then mixed with coal mix. Contents of the invention [0003] The object of the present invention is to provide an industrial briquette with high cold and hot strength, good waterproof performance, low cost and simple production process and its preparation method. [0004] An industrial briquette provided by the invention, the components are calculated in parts by weigh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L5/04C10L5/14C10L10/02C10L10/00
CPCC10L10/02
Inventor 杨凤玲李莹英薛宝其程芳琴
Owner SHANXI UNIV
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