High-safety emulsion explosive for coal mine

An emulsion explosive, high-safety technology, applied in explosives and other directions, can solve the problems of weak water resistance, ammonium ladder explosives are easy to absorb moisture and agglomerate, and affect safe use, etc. The effect of the ability to resist detonation

Active Publication Date: 2012-04-25
CHINA COAL TECH & ENG GRP HUAIBEIBLASTING TECHN RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The powdered ammonium antimony explosives allowed in coal mines have weak water resistance and low safety, and more than 10% TNT must be added to this ammonium nitrate explosive to ensure its explosive performance. TNT is a toxic elemental explosive. It pollutes the environment and endangers human health. In addition, ammonium nitrate has strong hygroscopicity and agglomeration, which leads to the disadvantages of ammonium ladder explosives allowed in coal mines that are easy to absorb moisture and agglomerate, which seriously affects safe use. The same type of coal mines are allowed to be replaced by emulsion explosives; although water gel explosives have the advantages of simple production process, high safety performance of combustible gas, high power, good water resistance, and good blasting effect in water holes, the main raw material of water gel explosives is The price is

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Emulsion explosives for high-safety coal mines are made from the following raw materials in parts by weight:

[0040] Ammonium nitrate 51.4kg

[0041] Sodium nitrate 7.0kg

[0042] Calcium nitrate 8.0kg

[0043] Potassium nitrate 4.0kg

[0044] Urea 1.0kg

[0045] Composite flame suppressant 13.0kg

[0046] water 9.0kg

[0047] Compound emulsifier 2.8kg

[0048] Composite oil phase 3.8kg

[0049] Dinitrosopentamethylenetetramine 0.2kg

[0050] Acetic acid with a concentration of 40% 0.1kg

[0051] Expanded perlite 4.0kg;

[0052] The composite flame suppressant is composed of potassium chloride and ammonium chloride, potassium chloride 11.0kg, ammonium chloride 2.0kg;

[0053] The composite emulsifier is composed of sorbitan monooleate (SP-80) and soybean lecithin, 2.3kg of sorbitan monooleate and 0.5kg of soybean lecithin;

[0054] The composite oil phase is composed of paraffin, petrolatum, machine oil and chlorinated paraffin, wherein 1kg of paraffin, 1kg ...

Embodiment 2

[0064] High-safety emulsion explosives for coal mines are made from the following raw materials in parts by weight:

[0065] Ammonium nitrate 49.5kg

[0066] Sodium nitrate 7.0kg

[0067] Calcium nitrate 8.0kg

[0068] Ethanolamine nitrate 3.0kg

[0069] Composite flame suppressant 16.0kg

[0070] Urea 1.0kg

[0071] water 9.0kg

[0072] Compound emulsifier 2.6kg

[0073] Composite oil phase 3.9kg

[0074] Sodium nitrite 0.15kg

[0075] Phosphoric acid with a concentration of 40% 0.1kg

[0076] Expanded Perlite 4.5kg

[0077] Composite flame suppressant is made up of potassium chloride and ammonium chloride, by weight potassium chloride 13.0kg, ammonium chloride 3.0kg;

[0078] The compound emulsifier is composed of sorbitan monooleate and soybean lecithin, 2.3kg of sorbitan monooleate and 0.3kg of soybean lecithin;

[0079] The composite oil phase is composed of paraffin, vaseline, mechanical oil, and chlorinated paraffin, including 1.0kg of paraffin, 1.0kg of vase...

Embodiment 3

[0087] Emulsion explosives for high-safety coal mines are made from the following raw materials in parts by weight:

[0088] Ammonium nitrate 46.4kg

[0089] Sodium nitrate 8.0kg

[0090] Calcium nitrate 8.0kg

[0091] Ethanolamine nitrate 4.0kg

[0092] Composite flame suppressant 17.0kg

[0093] Urea 1.0kg

[0094] water 9.0g

[0095] Compound emulsifier 3.0kg

[0096] Composite oil phase 3.6kg

[0097] Sodium nitrite 0.15kg

[0098] 40% citric acid 0.1kg

[0099] Expanded perlite 4.5kg,

[0100] Composite flame suppressant is composed of potassium chloride and ammonium chloride, potassium chloride 13.0kg, ammonium chloride 4.0kg;

[0101] The compound emulsifier is composed of sorbitan monooleate and soybean lecithin, 2.5 kg of sorbitan monooleate and 0.5 kg of soybean lecithin;

[0102] The composite oil phase is composed of paraffin, vaseline, mechanical oil, and chlorinated paraffin, of which 1.0 kg of paraffin, 1.0 kg of vaseline, 0.3 kg of mechanical oil, an...

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PUM

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Abstract

The invention relates to high-safety emulsion explosive for a coal mine. The explosive comprises the following raw materials: ammonium nitrate, sodium nitrate, calcium nitrate, sensitizing agent, urea, compound flame inhibitor, water, compound emulsifier, a compound oil phase, foaming agent, foaming accelerating agent and expanded perlite; and the preparation steps of the high-safety emulsion explosive are as follows: preparing a water phase, preparing the oil phase, emulsifying, cooling, sensitizing and charging and packaging.The explosive performance accords with the GB18095-2000 standard, a mine-gas-safety test shows that the test reading is 250g, 0/5 when any flammable item is suspended, the mine gas does not ignite gas, and the safety level of the explosive is one grade higher than that of the explosive for three-grade coal mines with the highest grade in China; and on the premise of ensuring the safety of combustible gas, a new formula with the compound flame inhibitor, the compound foaming agent and ethanolamine nitrate or potassium nitrate added as the sensitizing agent is adopted, thus, the initiation sensitivity of the explosive is improved, the anti-deflagrability capability of the explosive is enhanced, and the safe production of the coal mine is better ensured.

Description

technical field [0001] The invention belongs to the technical field of coal mine safety production, and in particular relates to an emulsion explosive for coal mines. Background technique [0002] Permissible explosives in coal mines are an important part of industrial explosives in my country. They are classified according to the conditions of use of industrial explosives and are specially designed for use in underground coal mines where there is a risk of combustible gas and coal dust explosions. At present, in my country's coal mines, especially small and medium-sized coal mines and township coal mines, most of them still use blasting coal mining, which provides a market and development prospects for coal mines. Permitted explosives are advancing rapidly. [0003] At present, the types of explosives allowed in coal mines in my country mainly include ammonium ladder explosives allowed in coal mines, water gel explosives allowed in coal mines and emulsion explosives allowed...

Claims

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Application Information

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IPC IPC(8): C06B31/28
Inventor 孙玉华宋家良王继峰高铭尹新周易坤戴明虎
Owner CHINA COAL TECH & ENG GRP HUAIBEIBLASTING TECHN RES INST
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