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Molded coal and fabricating method

A manufacturing method and briquette technology, which are applied in the field of briquette, can solve the problems of decomposition failure, small addition amount and high price, and achieve the effects of low cost, small addition amount and small investment.

Inactive Publication Date: 2005-01-12
王茂春 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The amount of organic agent added is small, almost no increase in coal ash content, high cold strength, but most of them are expensive, and decompose and fail under hot conditions, such as starch, resin, tar, etc.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The proportion of sodium humate is 1%, the proportion of viscous coal powder is 3%, the characteristic of coke residue is 5, and the particle size is 160 mesh. The wet briquette is dried in a drying oven at 120°C until the water content is lower than 3%, and the non-water-resistant briquette obtained has a cold strength of 40kg / ball. The wet briquette is heated to 400°C in the muffle furnace and kept for 20 minutes. After taking it out and cooling, the cold strength of the briquette reaches 45kg / ball. It will not rot or disperse after being immersed in water for a long time, and the strength will be restored after drying. The thermal stability of non-water-resistant briquette and water-resistant briquette both reaches 100%, and the thermal strength (950°C×30’, the same below) reaches 50kg / ball.

Embodiment 2

[0019] The proportion of sodium humate is 2%, the proportion of viscous coal powder is 15%, the characteristic of coke residue is 4, and the particle size is 40 mesh. The wet briquettes are naturally dried (air-dried) until the water content is lower than 3%, to obtain non-water-resistant briquettes with a cold strength of 60kg / ball. The wet briquette is heated to 500°C in the muffle furnace, and after taking it out to cool, the cold strength reaches 70kg / ball. After soaking in water for 24 hours, the cold strength of the wet briquette reaches 30kg / ball; the wet briquette is heated to 650°C in the muffle furnace, and taken out After cooling, the cold strength reaches 80kg / ball, and after soaking in water for 24 hours, the strength of the briquette in the wet state reaches 45kg / ball, which can still meet the requirements of loading and unloading operations. The thermal stability of various briquettes reaches 100%, and the thermal strength reaches 110kg / ball.

Embodiment 3

[0021] The proportion of sodium humate is 2%, the proportion of viscous coal powder is 10%, the characteristic of coke residue is 5, and the particle size is 100 mesh. The wet briquettes are dried in a briquette quick-fixing furnace with a drying cycle of 15 to 25 minutes to obtain non-water-resistant briquettes with a cold strength of 60kg / ball. The wet briquette is thermally consolidated in the briquette quick-solidification furnace, the consolidation period is 30-40min, the temperature in the high-temperature zone of the consolidation furnace is 650-750°C, and the briquette is dark red (about 550°C) when it comes out of the furnace. After natural cooling, the briquette The cold strength reaches 70kg / ball, and after soaking in water for 24 hours, the strength of wet briquettes is 40kg / ball. The thermal stability of the above-mentioned non-water-resistant briquette and water-resistant briquette both reaches 100%, and the thermal strength reaches 100kg / ball.

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Abstract

A preparing method for coal forming includes mixing raw materials of coal, sodium humate and pulverized coal, pressing the mixed material for forming and obtaining product by solidifying. The formed coal has both of excellent cold and heat strength, good waterproof ability and uniform porosity.

Description

technical field [0001] The invention relates to a molded coal, in particular to a molded coal containing a multifunctional composite binder with controllable water resistance and a manufacturing method thereof. Background technique [0002] Most briquettes are binder briquettes, that is, briquette raw coal with a certain particle size (generally less than 6mm) (hereinafter referred to as raw coal) and binder are mixed and then pressurized (industrial briquettes are mostly spherical), and after solidification Knot processed. Briquettes are divided into non-water-resistant briquettes and water-resistant briquettes according to their cold-state water resistance properties. Water-resistant briquettes can be stored in the open. For a certain raw coal the properties and processing costs mainly depend on the binder. Binders include organic agents, inorganic agents and their complexes. The amount of organic agent added is small, almost no increase in coal ash content, high cold s...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L5/04
Inventor 王茂春
Owner 王茂春
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