A kind of coal seam similar material and preparation method thereof

A technology of similar materials and coal seams, which is applied in the field of coal seam similar materials and their preparation, can solve problems such as difficult to meet the requirements of scientific research and large differences in mechanical parameters adsorption, achieve good application prospects, and be conducive to accurate prediction and repeatability The effect of the property and the simple preparation method

Active Publication Date: 2019-06-04
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most commonly used similar materials are made by adding some cementing agents to coal powder. The mechanical parameters, porosity, and adsorpt

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0031] Example 1:

[0032] The mass percentage of each component is as follows: coal powder 18.0%, aluminate cement 38.0%, gypsum 15.5%, activated carbon 2.5%, polycarboxylate superplasticizer 1.1%, sodium lauryl sulfonate 0.4%, carboxymethyl Cellulose 0.5%, water 24.0%;

[0033] The above-mentioned substances were weighed as raw materials according to mass percentage, wherein the particle size range of the coal powder taken out was 60 mesh to 80 mesh, and the particle size range of activated carbon was 100 mesh to 150 mesh; the coal powder, aluminate cement, gypsum , activated carbon and carboxymethyl cellulose were mixed and stirred evenly to make powder A; polycarboxylate superplasticizer and sodium dodecylsulfonate were added to water and stirred evenly to make liquid B; Add A into the liquid material B, fully stir and mix evenly; put the mixed material into the mold, press it under 15MPa pressure for 30min, and then release the mold; put the molded material at a temperat...

Example Embodiment

[0035] Example 2:

[0036] The mass percentage of each component is as follows: coal powder 30.0%, aluminate cement 25.0%, gypsum 23.5%, activated carbon 1.2%, polycarboxylate superplasticizer 0.8%, sodium lauryl sulfonate 0.6%, carboxymethyl Cellulose 0.9%, water 18.0%;

[0037] The above-mentioned substances were weighed as raw materials according to mass percentage, wherein the particle size range of the coal powder taken out was 60 mesh to 80 mesh, and the particle size range of activated carbon was 100 mesh to 150 mesh; the coal powder, aluminate cement, gypsum , activated carbon and carboxymethyl cellulose were mixed and stirred evenly to make powder A; polycarboxylate superplasticizer and sodium dodecylsulfonate were added to water and stirred evenly to make liquid B; Add A into the liquid material B, fully stir and mix evenly; put the mixed material into the mold, press it under 15MPa pressure for 30min, and then release the mold; put the molded material at a temperat...

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PUM

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Abstract

The invention discloses a coal bed similar material and a preparation method thereof. The coal bed similar material is prepared from the following raw materials in percentages by weight: 15% to 36% of pulverized coal, 18% to 45% of aluminate cement, 10% to 35% of gypsum, 0.5% to 3.6% of active carbon, 0.4% to 1.8% of a polycarboxylate superplasticizer, 0.2% to 1.0% of sodium dodecyl sulfate, 0.3% to 1.5% of carboxymethylcellulose and 10% to 35% of water. The preparation method comprises the following steps: weighing the raw materials in proportion; uniformly mixing the pulverized coal, the aluminate cement, the gypsum, the active carbon and the carboxymethylcellulose to prepare a powder material A; adding water to the polycarboxylate superplasticizer and the sodium dodecyl sulfate, and uniformly stirring to prepare a liquid material B; adding the powder material A into the liquid material B, and uniformly mixing; then putting a mixture into a mold, and carrying out compression molding; conserving the material for 14 d after forming so as to obtain the similar material. The similar material is similar to a real coal bed, is simple in preparation method, easy in operation and high in stability, and has wide practicability.

Description

technical field [0001] The invention relates to a coal seam similar material and a preparation method thereof, in particular to a similar material suitable for simulating high outburst coal seams with different strengths and a preparation method thereof. Background technique [0002] China is a country whose primary energy is dominated by coal. As the most important energy, coal accounts for about 70% of the primary energy production and consumption structure. In 2015, the national raw coal output was 3.75 billion tons, accounting for 47.7% of the global total, while coal consumption accounted for 50.0% of the global total. According to the prediction of authoritative organizations, in the next 30 to 50 years, with the development and promotion of new energy, renewable energy, hydropower and nuclear power, the proportion of coal in the primary energy structure will continue to decline, but coal will still remain in my country's energy composition. will be dominant. It is of...

Claims

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Application Information

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IPC IPC(8): C04B28/14
CPCC04B28/14C04B2111/00991C04B14/022C04B7/32C04B2103/302C04B24/383C04B24/16
Inventor 高亚斌李子文梁卫国王飞刘剑
Owner TAIYUAN UNIV OF TECH
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