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A dry powder briquette binder, a briquette containing the binder and a method for preparing the briquette

A technology of binder and briquette, applied in the preparation of briquette and briquette, and the field of dry powder briquette binder, can solve the problems of low cold and heat strength, large amount of addition, poor thermal stability, etc., and achieves cold and hot strength. High, high ball formation rate, good waterproof effect

Active Publication Date: 2017-09-29
河北东慈环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the deficiencies such as large addition amount, low hot and cold strength, and poor thermal stability of the briquette binder in the prior art, the present invention provides a dry powder briquette binder, briquette and briquette containing the binder. preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] (1) Take 100kg of coal powder and 2.5kg of binder, wherein the binder is composed of the following components: 1.5kg of bentonite, 0.75 kg of oxidized starch, 0.0125kg of sodium carboxymethyl cellulose, 0.0125kg of polyvinyl alcohol, Sodium carbonate 0.025kg, calcium oxide 0.125kg, sodium chloride 0.075kg; mix the above raw materials evenly;

[0044] (2) Spray and add water to the mixture obtained in step (1), the amount of water added is 8kg, and stir while spraying;

[0045] (3) Send the mixed material processed in step (2) into a molding machine and extrude it under a pressure of 25MPa to obtain wet briquettes;

[0046] (4) Dry the wet briquette obtained in step (3) in a drying kiln at 100° C. to obtain a briquette product, and the water in the dried briquette product is 2% of the mass of coal powder.

[0047] The briquette product detection analysis result of embodiment 1 is as follows:

[0048] The average wet bulb strength is 83N / piece; the average cold strength...

Embodiment 2

[0050] (1) Take 100kg of coal powder and 2kg of binder, wherein the binder is composed of the following components: 1.2kg of bentonite, 0.56kg of oxidized starch, 0.01kg of sodium carboxymethyl cellulose, 0.01kg of polyvinyl alcohol, carbonic acid Sodium 0.02kg, calcium oxide 0.1kg, sodium chloride 0.1kg; mix the above raw materials evenly;

[0051] (2) Spray and add water to the mixture obtained in step (1), the amount of water added is 11kg, and stir while spraying;

[0052] (3) Send the mixture processed in step (2) into a molding machine and extrude it under a pressure of 20MPa to obtain wet briquettes;

[0053] (4) Dry the wet briquette obtained in step (3) in a drying kiln at 60° C. to obtain a briquette product, and the water in the dried briquette product is 3% of the mass of coal powder.

[0054] The briquette product detection analysis result of embodiment 2 is as follows:

[0055] The average wet bulb strength is 80N / piece; the average cold strength is 800N / piece;...

Embodiment 3

[0057] (1) Take 100kg of coal powder and 3kg of binder, wherein the binder is composed of the following components: 2.4kg of bentonite, 0.3kg of oxidized starch, 0.15kg of sodium carboxymethyl cellulose, 0.03kg of polyvinyl alcohol, carbonic acid Sodium 0.03kg, calcium oxide 0.06kg, sodium chloride 0.03kg; mix the above raw materials evenly;

[0058] (2) Spray and add water to the mixture obtained in step (1), the amount of water added is 7kg, and stir while spraying;

[0059] (3) Send the mixed material processed in step (2) into a molding machine and extrude it under a pressure of 28MPa to obtain wet briquettes;

[0060] (4) Dry the wet briquette obtained in step (3) in a drying kiln at 160° C. to obtain a briquette product, and the water in the dried briquette product is 1% of the mass of coal powder.

[0061] The briquette product detection analysis result of embodiment 3 is as follows:

[0062] The average wet bulb strength is 75N / piece; the average cold strength is 820N / ...

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Abstract

The invention relates to a dry powder briquette binder, which is prepared by mixing the following raw materials in parts by weight: 40-85 parts by weight of bentonite, 10-50 parts by weight of oxidized starch, 0.1-5 parts by weight of sodium chloride, polyvinyl alcohol 0.1-1 parts by weight, 0.1-5 parts by weight of sodium carbonate, 1-10 parts by weight of calcium oxide and 0.5-10 parts by weight of sodium carboxymethylcellulose. The present invention also relates to a briquette comprising the above-mentioned binder and a preparation method thereof. The invention solves the disadvantages of the prior art, such as large addition amount of briquette binder, low hot and cold strength of briquette, poor thermal stability and the like.

Description

technical field [0001] The invention belongs to the field of molded coal processing, and in particular relates to a dry powder molded coal binder, molded coal containing the binder and a preparation method of molded coal. Background technique [0002] Binders must be added to the production of briquettes, and the performance of the binders directly determines the quality of the briquettes. Binders are the core technology of the briquette technology; the current types of briquette binders can be divided into Organic, inorganic and compound three categories. Among them, the composite binder is composed of two or more organic and / or inorganic binders to make up for the deficiency of a single binder, so that the briquette can achieve better quality. [0003] However, the composition of the present composite binders varies greatly, and the difference in the composition has a great influence on the final quality of the briquette and the addition amount is also relatively large, u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L5/14
Inventor 李晓东李慈
Owner 河北东慈环保科技有限公司
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