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High-performance powdery emulsion explosive for three-level coal mine and preparation method of high-performance powdery emulsion explosive

A technology of powdery emulsion explosives and emulsion explosives, which is applied in the direction of explosives, etc., can solve problems such as not very outstanding explosive performance, reduced explosive performance, and shortened shelf life of explosives, so as to reduce the free accumulation of bubbles, improve safety, and good explosive performance Effect on storage stability

Inactive Publication Date: 2017-11-24
宜兴市阳生化工有限公司
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0002] Emulsion explosives allowed in coal mines are widely used in coal mining blasting projects. In view of the characteristics of dangerous and explosive substances such as gas and coal dust in coal mines, it is required that in addition to considering the explosive performance of explosives in coal mines, special When considering blasting operations, the explosion suppression safety of explosive explosions on underground explosives, in order to meet the above conditions, the existing three-level coal mine permitted emulsion explosives have made corresponding adjustments in the combination of emulsifiers, flame suppressants and sensitizers. The compromise of the three-level coal mine allowed emulsion explosive explosion to meet the explosion suppression safety requirements of underground explosives, but its use guarantee period is only 120 days, and its explosive performance is not very outstanding
[0003] Disadvantages of the prior art: the existing emulsion explosives allowed in coal mines, no matter powdery explosives or colloidal explosives, are based on adding an inert inorganic alkali metal salt flame suppressant to the water phase to achieve resistance to gas and coal dust. Explosive performance, in order to meet the safety requirements of coal mine explosives, especially for emulsion explosives with a higher safety level, it is necessary to add a large amount of inert inorganic salt flame suppressant, which leads to a significant reduction in the explosive performance of explosives; therefore, to solve the problem of coal mine explosives The characteristics of "high safety performance and low explosive performance" of explosives have always been a difficult problem in the technical field of coal mine explosives at home and abroad, even a consensus, and it has not been resolved so far, which directly leads to the explosive performance of all current coal mine explosives. It is lower than the non-coal mine-type explosive products of the same variety, and the emulsion explosive is particularly prominent. Not only that, for the emulsion explosive, the inorganic flame suppressant added to the aqueous phase solution is currently practically used such as sodium chloride, potassium chloride , ammonium chloride, etc., all increase the crystallization point of the explosive aqueous solution and shorten the shelf life of the explosive

Method used

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  • High-performance powdery emulsion explosive for three-level coal mine and preparation method of high-performance powdery emulsion explosive
  • High-performance powdery emulsion explosive for three-level coal mine and preparation method of high-performance powdery emulsion explosive

Examples

Experimental program
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Effect test

Embodiment 1

[0065] This embodiment provides a high-performance tertiary coal mine powdery emulsion explosive, which comprises the following components in parts by mass:

[0066] Ammonium nitrate: 70.0 parts, sodium nitrate: 7.0 parts, water: 7.5 parts, sodium chloride: 6.0 parts, microcrystalline wax: 1.2 parts, hydrocarbons: 3.5 parts, sensitizer: 0.3 parts, emulsifier: 2.0 parts .

[0067] The sensitizer is a mixture of N,N-dinitrosopentamethylenetetramine and water, in terms of mass ratio N,N-dinitrosopentamethylenetetramine:water=1:2; The compound is often three line oil.

[0068] The preparation method of emulsifier is as follows:

[0069] The emulsifier includes the following components by mass percentage: high viscosity emulsifier T155: 60%, polyacrylamide: 5%, soybean lecithin: 35%;

[0070] Mix high-viscosity emulsifier T155 and polyacrylamide evenly and heat to 75°C, then add soybean lecithin, stir at 75°C for 3 hours to obtain emulsifier.

[0071] The preparation method of ...

Embodiment 2

[0081] This embodiment provides a high-performance tertiary coal mine powdery emulsion explosive, which comprises the following components in parts by mass:

[0082] Ammonium nitrate: 80.0 parts, sodium nitrate: 11.0 parts, water: 11.0 parts, sodium chloride: 10.0 parts, microcrystalline wax: 1.5 parts, hydrocarbons: 4.8 parts, sensitizer: 0.6 parts, emulsifier: 2.5 parts .

[0083] The sensitizer is a mixture of N,N-dinitrosopentamethylenetetramine and water, in terms of mass ratio N,N-dinitrosopentamethylenetetramine:water=1:2; The compound is a vacuum distillate.

[0084] The preparation method of emulsifier is as follows:

[0085] The emulsifier includes the following components by mass percentage: high viscosity emulsifier T155: 60%, polyacrylamide: 5%, soybean lecithin: 35%;

[0086] Mix high-viscosity emulsifier T155 and polyacrylamide evenly and heat to 75°C, then add soybean lecithin, stir at 75°C for 3 hours to obtain emulsifier.

[0087] The preparation method o...

Embodiment 3

[0094] This embodiment provides a high-performance tertiary coal mine powdery emulsion explosive, which comprises the following components in parts by mass:

[0095] Ammonium nitrate: 75 parts, sodium nitrate: 10 parts, water: 9 parts, sodium chloride: 8 parts, microcrystalline wax: 1.4 parts, hydrocarbons: 4.1 parts, sensitizer: 0.4 parts, emulsifier: 2.2 parts .

[0096] The sensitizer is a mixture of N,N-dinitrosopentamethylenetetramine and water, in terms of mass ratio N,N-dinitrosopentamethylenetetramine:water=1:2; The compound is a mixture of decompression wax paste and heavy deasphalted oil.

[0097] The preparation method of emulsifier is as follows:

[0098] The emulsifier includes the following components by mass percentage: high viscosity emulsifier T155: 60%, polyacrylamide: 5%, soybean lecithin: 35%;

[0099] Mix high-viscosity emulsifier T155 and polyacrylamide evenly and heat to 75°C, then add soybean lecithin, stir at 75°C for 3 hours to obtain emulsifier. ...

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Abstract

The invention discloses a high-performance powdery emulsion explosive for a three-level coal mine. The powdery emulsion explosive is prepared from components in parts by mass as follows: 70.0-80.0 parts of ammonium nitrate, 7.0-11.0 parts of sodium nitrate, 7.5-11.0 parts of water, 6.0-10.0 parts of sodium chloride, 1.2-1.5 parts of microcrystalline wax, 3.5-4.8 parts of hydrocarbon, 0.3-0.6 parts of a sensitizing agent and 2.0-2.5 parts of an emulsifier. The invention further relates to a preparation method of the high-performance powdery emulsion explosive for the three-level coal mine. The preparation method is simple and easy, the preparation cost is low, the prepared emulsion explosive is good in explosion performance and good in safety and produces little blasting fume, the explosive body is harder in form, non-sticky and high in water resistance, besides, index variation amplitude within the validity period is smaller, quality and stability of the emulsion explosive are improved, the quality guarantee period is prolonged, and the storage is stable.

Description

technical field [0001] The invention relates to an explosive and a preparation method thereof, in particular to a high-performance third-grade coal mine powdery emulsion explosive and a preparation method thereof. Background technique [0002] Emulsion explosives allowed in coal mines are widely used in coal mining blasting projects. In view of the characteristics of dangerous and explosive substances such as gas and coal dust in coal mines, it is required that in addition to considering the explosive performance of explosives in coal mines, special When considering blasting operations, the explosion suppression safety of explosive explosions on underground explosives, in order to meet the above conditions, the existing three-level coal mine permitted emulsion explosives have made corresponding adjustments in the combination of emulsifiers, flame suppressants and sensitizers. The compromise made by the third-class coal mine allowed emulsion explosive explosion to meet the ex...

Claims

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Application Information

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IPC IPC(8): C06B31/32
CPCC06B31/32
Inventor 许雷生殷军君贾建强
Owner 宜兴市阳生化工有限公司
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