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High temperature sensitization method for preparing coal mine emulsion explosive

A technology of emulsion explosives and coal mines, applied in explosives, non-explosive/non-thermic components, offensive equipment, etc., can solve problems such as catalytic gas explosions, achieve the effects of enhancing foaming ability, prolonging storage stability, and avoiding free radicals

Inactive Publication Date: 2015-09-09
李亮军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical defect that the existing coal mine emulsion explosive adopts the nitrite chemical sensitization method to generate bubbles into nitrogen oxides, and nitrogen oxides have catalytic gas explosions, the present invention provides a new type of coal mine emulsion explosive that does not produce nitrogen oxides. Foaming agent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Take the industrial production of 100kg coal mine emulsion explosive as an example, the raw materials are as follows:

[0031] Ammonium nitrate 77.5kg

[0032] Sodium nitrate 7.0kg

[0033] Sodium chloride 0.5kg

[0034] Water 9.0kg

[0035] Composite oil phase 3.5kg

[0036] Sorbitan monooleate 1.0kg

[0037] Foaming agent 1.5kg

[0038] The composite oil phase is composed of paraffin, vaseline, mechanical oil and chlorinated paraffin, wherein 1 kg of paraffin, 1 kg of vaseline, 0.5 kg of mechanical oil, and 1.0 kg of chlorinated paraffin.

[0039] The foaming agent is prepared by mixing and stirring the following raw materials in parts by mass at a water temperature of 0°C:

[0040] Sodium α-alkenyl sulfonate 30.0 parts

[0041] Sodium Lauryl Sulfate 2.0 parts

[0042] Sodium hydroxymethyl cellulose 1.0 parts

[0043] Polyvinyl alcohol 1.0 parts

[0044] Lignin 0.1 parts

[0045] Potassium acrylate 0.01 parts

[0046] Add water to 100 parts

[0047] Concr...

Embodiment 2

[0057] Take the industrial production of 100kg coal mine emulsion explosive as an example, the raw materials are as follows:

[0058] Ammonium nitrate 73.25kg

[0059] Sodium nitrate 8.0kg

[0060] Potassium chloride 0.8kg

[0061] Water 10.0kg

[0062] Composite oil phase 3.8kg

[0063] Sorbitan monooleate 2.4kg

[0064] Foaming agent 1.75kg

[0065] The composite oil phase is composed of paraffin, vaseline, mechanical oil and chlorinated paraffin, wherein 1 kg of paraffin, 1.1 kg of vaseline, 0.7 kg of mechanical oil, and 1.0 kg of chlorinated paraffin.

[0066] The foaming agent is prepared by mixing and stirring the following raw materials in parts by mass at a water temperature of 50°C:

[0067] Sodium α-alkenyl sulfonate 40.0 parts

[0068] Sodium Lauryl Sulfate 15.0 parts

[0069] Sodium hydroxymethylcellulose 5.0 parts

[0070] Polyvinyl alcohol 2.0 parts

[0071] 0.8 parts of lignin

[0072] Potassium acrylate 0.5 parts

[0073] Add water to 100 parts

[...

Embodiment 3

[0083] Take the industrial production of 100kg coal mine emulsion explosive as an example, the raw materials are as follows:

[0084] Ammonium nitrate 68.0kg

[0085] Sodium nitrate 8.0kg

[0086] Potassium fluoride 6.0kg

[0087] Water 9.6kg

[0088] Composite oil phase 4.5kg

[0089] Sorbitan Monooleate 1.5kg

[0090] Foaming agent 2.4kg

[0091] The composite oil phase is composed of paraffin, vaseline, mechanical oil and chlorinated paraffin, wherein 1.0 kg of paraffin, 1.0 kg of vaseline, 1.0 kg of mechanical oil, and 1.5 kg of chlorinated paraffin.

[0092] The foaming agent is prepared by mixing and stirring the following raw materials in parts by mass at a water temperature of 20°C:

[0093] Sodium α-alkenyl sulfonate 35.0 parts

[0094] Sodium Lauryl Sulfate 10.0 parts

[0095] Sodium hydroxymethylcellulose 3.0 parts

[0096] 1.5 parts of polyvinyl alcohol

[0097] Lignin 0.5 parts

[0098] Potassium acrylate 0.1 parts

[0099] Add water to 100 parts

[0...

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Abstract

The invention relates to a high temperature sensitization method for preparing a coal mine emulsion explosive. The method comprises the following steps: preparing an aqueous phase, an oil phase, emulsifying, sensitizing, loading and cooling. The following raw materials are used: ammonium nitrate, sodium nitrate, a suppressor agent, water, a composite oil phase, an emulsifier and a foaming agent. The foaming agent is prepared by mixing and stirring uniformly alpha-olefin sulfonate, sodium lauryl sulfate, sodium carboxymethylcellulose, polyvinyl alcohol, lignin, potassium acrylate, and water. The sensitization is as below: adding an accelerator and the foaming agent to a emulsion matrix with temperature of 85-110 DEG C, uniformly mixing and sensitizing for 2 to 18 minutes. The coal mine emulsion explosive uses air as sensitization bubbles, does not contain nitrogen oxides, reduces the risk of gas explosion, reduces the generation of toxic gases in the event of an explosion reaction, and increases the security of coal mine emulsion explosive by one level, under the same amount of flame inhibitor.

Description

technical field [0001] The invention belongs to the technical field of emulsion explosives, in particular to a preparation method of industrial coal mine emulsion explosives. Background technique [0002] Emulsion explosives are usually prepared by emulsifying an aqueous solution of an oxidizing agent and a reducing agent to obtain a latex matrix, and the latex matrix can be produced through a foaming process under the action of a sensitizer. The sensitization process is an essential and extremely important process in the manufacture of emulsion explosives, which has an important impact on the performance of emulsion explosives. [0003] The existing sensitization methods of emulsion explosives, regardless of rock type or coal mine type, all adopt the nitrite chemical foaming method. Because this method has the advantages of small and uniform bubbles, high explosive detonation velocity, high power, and low production cost, it is currently the leading method. The sensitizati...

Claims

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Application Information

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IPC IPC(8): C06B31/28C06B23/00
Inventor 李亮军
Owner 李亮军
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