Novel waterproof compound coal binder

A binder and composite technology, which is applied in the field of new waterproof composite coal binder, can solve the problems of increased cost of cooking hemp waste liquid, limited sources of raw materials, complicated manufacturing process, etc., and achieves convenient and cheap material sources, The effect of reducing secondary pollution and simple production process

Inactive Publication Date: 2014-04-09
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are also respective shortcomings in the patents of the existing composite binders: for example, humate, cooking hemp waste liquid and silica-alumina powder are used in CN1749372A, but the manufacturing process is complicated, and the concentrated waste liquid requires a reactor , high energy consumption, increased cost, and the waste cooking hemp liquid has certain geographical restrictions, and the source of raw materials is not extensive, so it is difficult to be widely used

Method used

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  • Novel waterproof compound coal binder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Dissolve 1.0 g of sodium carboxymethyl cellulose in 10 ml of water, and keep stirring (pay attention to avoid shear force stirring). Then 3.3 grams of bentonite, 0.3 grams of cornstarch, 0.16 grams of thermoplastic phenolic resin and 3.64 grams of sulfur-aluminum cement were evenly mixed and 200 grams of anthracite powder with a particle size of less than 3 mm were added and mixed evenly, and then the prepared sodium carboxymethyl cellulose Add and stir evenly, the total amount of binder added is 4% of the coal powder, and finally at 100-200Kg / cm 2 Molded into ellipsoidal briquettes at room temperature under pressure.

[0019] The formed briquettes are placed in the drying kiln for drying after two days. The temperature at the entrance of the kiln is 80°C, and then slowly rises to 150°C. This process is kept for 2 hours, and the briquettes are produced, and the cold strength is greater than 90 kg / Each ball, with a heat strength of 45 kg / ball, placed in water for conti...

Embodiment 2

[0021] Put 1.0 g of powdered sodium carboxymethylcellulose into 10 ml of water to dissolve, and keep stirring (note avoiding shear force stirring). Then 2.8 grams of bentonite, 0.3 grams of cornstarch, 0.16 grams of thermoplastic phenolic resin and 4.14 grams of aluminate cement were evenly mixed, and 200 grams of anthracite coal powder with a particle size of less than 3 mm were added and mixed evenly, and then the prepared carboxymethyl cellulose Sodium is added and stirred evenly, the total amount of binder added is 4% of the coal powder, and finally at 100-200Kg / cm 2 Molded into ellipsoidal briquettes at room temperature under pressure.

[0022] The formed briquettes are placed in the drying kiln for drying after two days. The temperature at the entrance of the kiln is 80°C, and then slowly rises to 150°C. This process is kept for 2 hours, and the briquettes are produced, and the cold strength is greater than 90 kg / Each ball, with a heat strength of 45 kg / ball, placed in...

Embodiment 3

[0024] Put 0.6 grams of powdered polyvinyl alcohol into 10 milliliters of water to dissolve, and keep stirring (note avoiding shear force stirring). Then 3.3 grams of bentonite, 0.3 grams of tapioca starch, 0.16 grams of thermoplastic phenolic resin, and 3.64 grams of sulfur-aluminum cement were evenly mixed, and 200 grams of anthracite coal powder with a particle size of less than 3 mm were added to mix evenly, and then the prepared polyvinyl alcohol was added and stirred Evenly, the total amount of binder added is 4% of the coal powder, and the final amount is 100-200Kg / cm 2 Molded into ellipsoidal briquettes at room temperature under pressure.

[0025] The formed briquettes are placed in the drying kiln for drying after two days. The temperature at the entrance of the kiln is 80°C, and then slowly rises to 150°C. This process is kept for 2 hours, and the briquettes are produced, and the cold strength is greater than 90 kg / Each ball, with a heat strength of 45 kg / ball, pla...

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Abstract

The invention discloses a novel waterproof compound coal binder mainly used for the molding production of industrial gasification briquette from pulverized anthracite. The binder comprises bentonite, starch, extraordinary resin, cement and an organic polymer material. The binder has the advantages of low consumption, simple preparation technology, low cost, no secondary pollution, and suitableness for various coals. Molded gasification briquette processed in the invention has high cold and hot strengths (a cold compression strength of 85-115kg / ball and a hot compression strength of 40-45kg / ball, has a strong binding power and a good waterproof property, so the binder has a good economic benefit and application prospect.

Description

technical field [0001] The invention relates to a novel waterproof composite molded coal binder. technical background [0002] For industrial briquettes, it is required not only to have good waterproof performance to facilitate transportation and storage, but also to have high calorific value, low ash content, good thermal stability, and no slagging. The performance of briquette not only depends on the quality of raw coal powder, but also is closely related to the binder used. So far, hundreds of types of briquette binders have been developed at home and abroad, which can be divided into three categories according to the chemical properties of the binders: organic, inorganic, and composite. [0003] Organic binders generally have better bonding performance, and the briquettes have higher mechanical strength after drying and curing. However, because the organic matter in the organic binder is easy to decompose and burn at high temperature, it has a certain amount of heat, bu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L5/10C10L5/12
Inventor 王留成马溢华赵建宏王建设宋成盈张磊
Owner ZHENGZHOU UNIV
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