Blue carbon environment-friendly moulded coals and preparation method thereof

A production method and an environment-friendly technology, applied in the coal field, can solve the problems of low ash melting point and loose structure, and achieve the effects of complete combustion, long combustion time and good environmental protection characteristics.

Inactive Publication Date: 2010-12-08
刘子建
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since blue carbon is the product of tar and gas extracted from raw coal through dry distillation, its cohes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The object of the present invention is to provide a kind of blue carbon anthracite briquette made of blue carbon powder and a preparation method thereof.

[0015] The purpose of the present invention is achieved in the following ways:

[0016] A blue-carbon environment-friendly briquette, which contains 95%-96% of blue-carbon powder and 4%-5% of sodium-based bentonite according to weight percentage.

[0017] The production method of the above-mentioned blue carbon environmental-friendly briquettes: crush 95% to 96% of blue carbon powder and 4% to 5% of sodium bentonite until the particle size is below 2 mm, mix and add binder 7 per ton of the mixture Kg, 2-3 kg of starch, 60-80 kg of water, 200-500 g of sodium hydroxide, stir well at 10-20 kg / cm 2 Shaped under high pressure, and finally dried to get the finished product.

[0018] Preferably, the molding pressure is 13kg / cm 2 .

[0019] Preferably, the binder is one of refractory clay or bauxite.

Embodiment 2

[0021] Below, the present invention is specifically described by taking 1 ton of raw materials to make civil environment-friendly briquettes as an example: 950 kg of blue carbon powder and 50 kg of sodium bentonite are respectively crushed to a particle size below 2 mm. After mixing, 7 kg of refractory clay are added to the mixture. , 2 kg of starch, 60 kg of water, 200 g of sodium hydroxide, stir well at 13 kg / cm 2 Shaped under high pressure, and finally dried to get the finished product. The physical and chemical indicators of the formed product are shown in Table 1 below:

[0022] Table 1:

[0023] Compressive strength

Embodiment 3

[0025] The present invention is described in detail below by using 1 ton of raw material to make civil environment-friendly briquettes as an example: 960 kg of blue carbon powder and 40 kg of sodium bentonite are respectively crushed to a particle size below 2 millimeters. After mixing, add bauxite 7 to the mixture. kg, 3 kg of starch, 80 kg of water, 500 g of sodium hydroxide, stir well at 13 kg / cm 2 Shaped under high pressure, and finally dried to get the finished product. The physical and chemical indicators of the formed product are shown in Table 2 below:

[0026] Table 2:

[0027] Compressive strength

[0028] thermal stability

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Abstract

The invention discloses blue carbon environment-friendly moulded coals, which contain the following components in percentage by weight: 95 to 96 percent of blue carbon powder and 4 to 5 percent of sodium bentonite. The invention also discloses a preparation method of the blue carbon environment-friendly moulded coals. Coal carbon resources are fully utilized to effectively promote the additional value of the coals; the heat productivity of the moulded coals is high and reaches 7,000 to 8, 000 kilocalories/kilogram, the moulded coals are completely burned for a long time, and the burning time is about two times of raw coals. By using the blue carbon powder as the main raw material, the blue carbon environment-friendly moulded coals solve the problem that the pollution on the environment is caused by using the blue carbon powder as a waste, and simultaneously the prepared moulded coals have no smoke during burning and good environment protection property. The preparation method overcomes the technical difficulties that the main raw material has no caking property and has a loosened structure.

Description

technical field [0001] The invention relates to the technical field of coal, in particular to a blue-carbon environment-friendly briquette and a production method thereof. Background technique [0002] The coal resources in the Shenmu area of ​​Yulin, northern Shaanxi, belong to unbonded long-flame coal, which has the characteristics of high calorific value, low sulfur, and low ash. The characteristic of specific resistance is an indispensable high-quality raw material for alloy smelting and calcium carbide smelting industries. In recent years, its application has been extended to the chemical fertilizer and steel industries, and the demand is huge. However, because blue carbon with a particle size below 5 mm cannot be used in the above industries, a large amount of powder is produced in the production of blue carbon. Before 1999, the blue carbon factory dumped these leftovers into river ditches, let the rain wash them away, and until now they are mixed with pulverized coa...

Claims

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Application Information

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IPC IPC(8): C10L5/04C10L5/10C10L5/12
Inventor 刘子建白成兵刘子斌
Owner 刘子建
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