High-power water gel explosive applicable to coal mine and manufacturing method thereof

A technology for water-gel explosives and coal mines, used in explosives, blasting and other directions, can solve the problems of low chemical resistance efficiency of marble powder and reduced explosive energy of explosives, and achieve the effects of good chemical inhibition effect, increased explosive energy and improved safety.

Active Publication Date: 2013-02-27
ANHUI UNIV OF SCI & TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the special structure of the water-based gel of water-based explosives, inert marble powder (CaCO3) is used as the flame suppressant of the allowed explosives in coal mines in the existing third-level coal mine water-based explosives, but the chemical resistance of marble powder is low. Explosives decompose and absorb heat during the detonation reaction. To reach the corresponding safety level, more mass fractions need to be added, thus causing the explosion energy of explosives to decrease too much

Method used

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  • High-power water gel explosive applicable to coal mine and manufacturing method thereof

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Effect test

Embodiment 1

[0037] A high-power water-gel explosive for coal mines, in which the components are in parts by weight: 82% monomethylamine nitrate aqueous solution 38, powdered ammonium nitrate 35, sodium nitrate 8, high-efficiency flame suppressant 8, aluminum powder 0.5, fennel powder 0.9, glass beads 2, potassium dichromate aqueous solution with a concentration of 60% 0.3, fluorinated protein 0.2, among which the content of each component in the high-efficiency flame suppressant is potassium chloride 90%, ammonium chloride 5 %, water-resistant coating agent 5%; the content of each component in the water-resistant coating agent is: composite wax 94%, sodium lauryl sulfate 6%.

[0038] According to the above-mentioned components and content, the high-power three-grade coal mine permitted water-gel explosive of the present invention is made with the following preparation steps:

[0039] a. Mix and melt paraffin wax or compound wax and sodium lauryl sulfate at 110-120°C to make a water-resist...

Embodiment 2

[0046]A high-power third-grade coal mine permitted water-gel explosive, wherein the components are: 85% monomethylamine nitrate aqueous solution 36, powdered ammonium nitrate 34, sodium nitrate 9, high-efficiency flame suppressant 9, 0.8 aluminum powder, 0.9 squash powder, 2 glass beads, 0.2 potassium permanganate aqueous solution with a concentration of 60, 0.1 fluorinated protein, among which the content of each component in the high-efficiency flame suppressant is potassium chloride 88%, ammonium chloride 7%, water-resistant coating agent 5%; the content of each component in the water-resistant coating agent is: composite wax 92%, sodium lauryl sulfate 8%.

[0047] According to above-mentioned composition and content, according to the preparation procedure of embodiment 1, promptly make high-power three-grade coal mine permitted water-gel explosive.

Embodiment 3

[0049] A high-power third-grade coal mine permitted water gel explosive, wherein the components are as follows in parts by weight: 81% monomethylamine nitrate aqueous solution 40, powdered ammonium nitrate 34, sodium nitrate 9, high-efficiency flame suppressant 8, 0.9 aluminum powder, 0.9 squash powder, 2 expanded perlite, 0.2 potassium dichromate aqueous solution with a concentration of 60%, 0.1 fluorinated protein, and the content of each component in the high-efficiency flame suppressant is potassium chloride 91%, chloride Ammonium 6%, water-resistant coating agent 3%; the content of each component in the water-resistant coating agent is: composite wax 94%, sodium lauryl sulfate 6%.

[0050] According to above-mentioned composition and content, according to the preparation procedure of embodiment 1, promptly make high-power three-grade coal mine permitted water-gel explosive.

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Abstract

The invention provides a high-power water gel explosive applicable to a coal mine. The high-power water gel explosive comprises the following substances in parts by weight: 30-45 parts of 75-86% nitric acid-methylamine water solution, 28-38 parts of powdery ammonium nitrate, 7-14 parts of sodium nitrate, 5-12 parts of efficient blast reducer, 0.1-1.5 parts of aluminium powder, 0.6-1.4 parts of sesbania powder, 1-3 parts of air bubble carriers, 0.2-0.4 part of cross-linking agent and 0.1-0.3 part of fluorizating protein. The power of the water gel explosive achieves the level of an existing second-stage water gel explosive applicable to the coal mine, and the safety meets the requirement of the existing second-stage water gel explosive applicable to the coal mine, so that the water gel explosive provided by the invention can be used for obviously improving the embrasure utilization ratio and lowering the blasting cost during high gas coal mine blasting operation.

Description

technical field [0001] The invention relates to a formula and a production method of a novel high-power coal mine permissible water gel explosive. Background technique [0002] In the existing high gas and coal dust explosion risk control blasting technology, conventional explosives include emulsion explosives allowed in Class III coal mines, and water gel explosives allowed in Class III coal mines, but these explosives have disadvantages such as low explosive power and low utilization rate of blastholes. At present, in the excavation of high-gas rock or coal mines, emulsion explosives or water-gel explosives permitted for secondary coal mines with low safety levels are widely used. During the roadway excavation and blasting, the danger of gas explosion is prone to occur. [0003] For rocks above medium hardness, the rock-breaking energy of the blasting of the existing third-level coal mine water-gel explosives is insufficient. Mass production practice has proved that for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B33/04F42D3/04
Inventor 颜事龙郭子如周富强刘伟朱福元刘锋章万龙汪泉代克州韩体飞
Owner ANHUI UNIV OF SCI & TECH
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