Mining filling-closing material and preparation device thereof

A mining and fat technology, applied in the field of mining filling and sealing materials and preparation devices, can solve the problems of flammability, high reaction temperature and high price, and achieve the effects of light weight, excellent foam compression performance and low cost

Active Publication Date: 2017-07-07
FUJIAN MAKENG MINING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the polyurethane filling and sealing materials currently used have the disadvantages of high price, flammability, high reaction temperature, and a large amount of toxic gas generated during the reaction.

Method used

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  • Mining filling-closing material and preparation device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Prepare materials according to the following weight composition: 100 parts of water, 45 parts of fly ash with a particle size range of 0.5 to 300 μm, 3 parts of gypsum, 10 parts of 42.5R cement, 12 parts of slaked lime, 1.2 parts of fatty alcohol polyoxyethylene ether, hydroxy 6.5 parts of ethyl methyl cellulose, 2 parts of sodium lauryl sulfate, 1 part of sodium fatty alcohol polyoxyethylene ether sulfate, 1.5 parts of polyphosphoric acid, 2 parts of hydroxypropyl starch ether with a viscosity of 300-600 mPas, acetic acid 1.2 parts of ethylene-ethylene copolymer redispersible latex powder, 12 parts of glass fiber with a length less than 2 mm, and enough silane coupling agent to impregnate the glass fiber.

[0020] The preparation steps are:

[0021] 1): Add 80 parts of water and all the fly ash, fatty alcohol polyoxyethylene ether, hydroxyethyl methylcellulose, gypsum, cement, slaked lime into the main mixing tank, and the agitator evenly forms the fly ash slurry, stir...

Embodiment 2

[0026] Prepare materials according to the following weight composition: 100 parts of water, 55 parts of fly ash with a particle size range of 0.5 to 300 μm, 1 part of gypsum, 15 parts of 42.5R cement, 10 parts of slaked lime, 1.8 parts of fatty alcohol polyoxyethylene ether, hydroxyl 8 parts of ethyl methyl cellulose, 2.5 parts of sodium lauryl sulfate, 1.2 parts of sodium fatty alcohol polyoxyethylene ether sulfate, 2 parts of polyphosphoric acid, 2.2 parts of hydroxypropyl starch ether with a viscosity of 300-600 mPas, acetic acid 1.2 parts of ethylene-ethylene copolymer redispersible latex powder, 10 parts of glass fiber with a length less than 2 mm and enough silane coupling agent to impregnate the glass fiber.

[0027] The preparation steps are:

[0028] 1): Add 80 parts of water and all the fly ash, fatty alcohol polyoxyethylene ether, hydroxyethyl methylcellulose, gypsum, cement, slaked lime into the main mixing tank, and the agitator evenly forms the fly ash slurry, st...

Embodiment 3

[0033] Prepare materials according to the following weight composition: 100 parts of water, 50 parts of fly ash with a particle size range of 0.5 to 300 μm, 2 parts of gypsum, 12 parts of 42.5R cement, 8 parts of slaked lime, 1.6 parts of fatty alcohol polyoxyethylene ether, hydroxy 7 parts of ethyl methyl cellulose, 2.4 parts of sodium lauryl sulfate, 1.4 parts of sodium fatty alcohol polyoxyethylene ether sulfate, 1.8 parts of polyphosphoric acid, 2.2 parts of hydroxypropyl starch ether with a viscosity of 300-600 mPas, acetic acid 1.5 parts of ethylene-ethylene copolymer type redispersible latex powder, 8 parts of glass fiber with a length less than 2mm and enough silane coupling agent to impregnate the glass fiber.

[0034] The preparation steps are:

[0035] 1): Add 82 parts of water and all the fly ash, fatty alcohol polyoxyethylene ether, hydroxyethyl methylcellulose, gypsum, cement, slaked lime into the main mixing tank, and the agitator evenly forms the fly ash slurry...

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Abstract

The invention relates to mining materials and aims at providing a mining filling-closing material. According to the technical scheme, the material contains the following components in parts by weight: 100 parts of water, 50 parts of coal ash, 2 parts of gypsum, 12 parts of 42.5R cement, 8 parts of slaked lime, 1.6 parts of fatty alcohol-polyoxyethylene ether, 7 parts of hydroxyethyl methylcellulose, 2.4 parts of lauryl sodium sulfate, 1.4 parts of fatty alcohol-polyoxyethylene ether sodium sulfate, 1.8 parts of polyphosphoric acid, 2.2 parts of hydroxypropyl starch ether with a viscosity of 300mPas-600mPas, 1.5 parts of vinyl acetate-vinyl copolymer type redispersible powder, 8 parts of glass fibers shorter than 2mm and a sufficient amount of a silane coupling agent capable of infiltrating the glass fibers. The material has excellent flame retardance and is simple in process and low in cost; the material is mainly prepared from inorganic materials, so that the material is not decomposed and is toxic-free and harmless, and safety hazards are not caused due to heavy use of the material.

Description

technical field [0001] The invention relates to a mine filling and sealing material and a preparation device. Background technique [0002] During coal mine excavation and mining operations, it is inevitable that caving, slabs, and holes will occur. These holes often cause gas accumulation, which not only increases the risk of gas explosion, but also causes spontaneous combustion in coal seams with spontaneous combustion tendency. Therefore, only by filling these holes in time can safe production be ensured. Coal mines in my country usually use methods such as erecting wooden stacks and filling mortar at the site of the fall, but these methods are time-consuming, laborious, and difficult to construct, and cannot guarantee that the hidden dangers of accidents will be truly eliminated. In addition, the goaf is not isolated, which affects underground ventilation. The traditional domestic explosion-proof airtight walls are mostly brick wall structures, and bricks, sand, ceme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B38/02C04B111/28C04B111/40
CPCC04B28/14C04B38/02C04B2111/00663C04B2111/00724C04B2111/28C04B2111/40C04B2201/20C04B2201/50C04B18/08C04B7/02C04B22/064C04B2103/40C04B22/165C04B24/38C04B14/42C04B24/42C04B2103/0057C04B20/008
Inventor 郭玉森仲涛刘淑金刘谦袁广民杨馥源刘铮杨志平曾斌徐树生
Owner FUJIAN MAKENG MINING CO LTD
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