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Briquette binder using potato starch as raw material, and preparation and application thereof

A potato starch and adhesive technology, applied in the directions of starch-derived adhesives, adhesive types, polymer adhesive additives, etc., can solve the problems of large environmental pollution, high cost, difficult tar mixing, etc. Simple preparation process, strong cohesiveness, and cost-reducing effects

Inactive Publication Date: 2012-11-07
GANSU JIU STEEL GRP HONGXING IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually, coal is prepared by adding tar to coal, but it is difficult to mix the tar, and special equipment needs to be added, and the cost is high, and the pollution to the environment is relatively large. It is necessary to develop a new type of coal binder with low price and environmental friendliness. seems meaningful

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Preparation of briquette binder

[0032] Formula: Calculated by weight percentage

[0033] Potato starch 20%; sodium polyacrylate (stabilizer) 0.2%; 10% concentration sodium hydroxide 12% (modifier); 30% hydrogen peroxide (oxidant) 0.4%; sodium benzoate (preservative) 0.2%; stearin Sodium (defoamer) 0.5%; Sodium tetraborate (complexing agent) 2.0%, the rest is pure water.

[0034] Preparation process: Add potato starch and water into the reactor, and uniformly heat to 50~65℃ under stirring; slowly add oxidant, stir for 25~30 minutes to fully oxidize the starch; add sodium hydroxide solution and stir for 20~25 minutes, A fluid translucent starch paste is formed; add defoamer, keep stirring for 1.5~2 hours, wait until most of the bubbles in the fluid disappear; cool to room temperature, add complexing agent under stirring, continue stirring for 25~35 Minutes to make the starch complex reaction; finally add stabilizers and preservatives, stir evenly, dry, crush, the existin...

Embodiment 2

[0039] (1) Preparation of briquette binder

[0040] Formula: Calculated by weight percentage

[0041] Potato starch 22%; hydroxymethyl cellulose (stabilizer) 0.2%; 10% concentration of sodium hydroxide (modifier) ​​11%; 30% hydrogen peroxide (oxidant) 0.4%; sodium benzoate (preservative) 0.2%; hard Sodium fat (defoamer) 0.5%; sodium silicate (complexing agent) 2.0%, the rest should be made up with pure water.

[0042] Preparation process: the same as in Example 1.

[0043] (2) Preparation of coke

[0044] The coal briquette prepared above is formulated into a paste liquid with a mass concentration of 10%, and then the paste liquid and inferior coal are mixed uniformly in a weight ratio of 10% to 90%, and the density is 1.05 g / cm. 3 The pellets (50-60mm in diameter); after placing the pellets in the air for 48 hours, the pellets and the raw coking coal are mixed uniformly at a weight ratio of 10% to 90%, and then they are mixed into the furnace to make coke.

[0045] Various indicators ...

Embodiment 3

[0047] (1) Preparation of briquette binder

[0048] Formula: Calculated by weight percentage

[0049] Potato starch 22%; hydroxymethyl cellulose (stabilizer) 0.2%; 10% concentration of sodium hydroxide (modifier) ​​11%; 30% hydrogen peroxide (oxidant) 0.4%; sodium benzoate (preservative) 0.2%; hard Sodium fatty acid (defoamer) 0.5%; sodium silicate (complexing agent) 2.0%, the rest is pure water.

[0050] Preparation process: the same as in Example 1.

[0051] (2) Preparation of coke

[0052] The coal briquette binder prepared above is formulated into a paste liquid with a mass concentration of 8%, and then the paste liquid and inferior coal are mixed uniformly in a weight ratio of 10% to 90%, and the density is 1.03 g / cm. 3 The pellets (50~60mm in diameter); After placing the pellets in the air for 48 hours, the pellets and the raw material coking coal are mixed uniformly at a weight ratio of 15% to 85%, and then they are mixed into the furnace to make coke.

[0053] Various indicator...

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Abstract

The invention provides a briquette binder using potato starch as a raw material. The briquette binder is prepared from raw materials comprising potato starch, a stabilizer, an oxidizing agent, a preservative and a complexing agent in a certain proportion. The briquette binder with strong cohesiveness prepared by the invention can be used for preparation of coke and has small additive amount; and the prepared coke has high strength. Besides, the preparation technology is simple, uses cheap and easily available raw materials, and has low cost and good application prospect in preparation of briquette.

Description

Technical field [0001] The present invention relates to a coal briquette binder, in particular to a briquette binder using potato starch as a raw material; the invention also relates to a preparation method of the briquette binder and the preparation method of the briquette binder Application in coke. Background technique [0002] The use of briquette technology to improve the quality of coke and expand the use of poor quality coking coal is one of the key technologies developed in the coking industry. The method of adding tar to coal is usually used to prepare briquette, but tar mixing is difficult, special equipment is needed, and the cost is higher, and the pollution to the environment is greater. It is necessary to develop a new type of low-cost and environmentally friendly briquette binder. It seems very meaningful. Summary of the invention [0003] The purpose of the present invention is to provide a coal briquette binder using potato starch as a raw material in view of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J103/10C09J11/04C09J11/06C09J11/08C10L5/10
Inventor 戴建萍杨凯
Owner GANSU JIU STEEL GRP HONGXING IRON & STEEL CO LTD
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