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Pressure resistant emulsified explosive

An emulsified explosive and pressure-resistant technology, applied in explosives, explosives processing equipment, offensive equipment, etc., can solve the problems of limited guidance, impossibility, difficulty in estimating and judging severity and characteristics, etc.

Active Publication Date: 2007-03-21
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

However, there are still the following limitations in the research work, which limit its practical significance in guiding the safety production of coal mines in my country:
[0009] 〔1〕There is a lack of systematic investigation and analysis of the phenomenon of abnormal blasting in coal mines in my country, and it is difficult to estimate and judge its severity and characteristics, so it is impossible to achieve conscious prevention
[0010] 〔2〕There is no comprehensive and accurate explanation of the pressure passivation mechanism of the allowed explosives in coal mines and the delayed electric detonators in coal mines

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] The pressure-resistant secondary rock-type emulsion explosive is made of the following raw materials in parts by weight

[0080] Ammonium nitrate 67.4

[0081] Sodium nitrate 13

[0082] Urea 3

[0083] water 10

[0084] Complex emulsifier 3

[0085] Composite oil phase 3.6

[0086] H foaming agent 0.12

[0087] Acetic acid 0.1.

[0088] The composite emulsifier is composed of sorbitan monooleate and polyisobutylene succinimide, and its parts by weight are: sorbitan monooleate: 2, polyisobutylene succinimide: 1.

[0089] The composite oil phase is composed of paraffin, vaseline, and machine oil, and its parts by weight are: paraffin: 1.2, vaseline: 1.2, and machine oil: 1.2.

[0090] About the production method:

[0091] The preparation method of the emulsion explosive of the present invention is basically the same as the production process of the existing emulsion explosive, and will not be described in detail here, and the preparation process conditions are sh...

Embodiment 2

[0093] The pressure-resistant secondary rock emulsion explosive is made of the following raw materials in parts by weight

[0094] Ammonium nitrate 73.4

[0095] Sodium nitrate 10

[0096] Urea 1

[0097] water 9

[0098] Complex emulsifier 2.7

[0099] Composite oil phase 3.9

[0100] Sodium nitrite 0.12

[0101] Phosphoric acid 0.1.

[0102] The compound emulsifier is composed of sorbitan monooleate and polyisobutylene succinimide, and its parts by weight are: sorbitan monooleate: 1.35, polyisobutylene succinimide: 1.35.

[0103] The composite oil phase is composed of paraffin, vaseline, and machine oil, and its parts by weight are: paraffin: 1.3, vaseline: 1.3, and machine oil: 1.3.

Embodiment 3

[0105] The pressure-resistant secondary coal mine emulsion explosive is made of the following raw materials in parts by weight

[0106] Ammonium nitrate 65.4

[0107] Sodium nitrate 14

[0108] Urea 1

[0109] Potassium chloride 5

[0110] water 8

[0111] Complex emulsifier 3

[0112] Composite oil phase 3.6

[0113] H foaming agent 0.12

[0114] Sulfuric acid 0.1;

[0115] The composite emulsifier is composed of sorbitan monooleate and polyisobutylene succinimide, and its parts by weight are: sorbitan monooleate: 2, polyisobutylene succinimide: 1.

[0116] The composite oil phase is composed of paraffin, vaseline, and machine oil, and its parts by weight are: paraffin: 1.2, vaseline: 1.2, and machine oil: 1.2.

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Abstract

A compression-resistant emulsified explosive for coal mine features that the composite emulsifier prepared from anhydrosorbitol monooleate and polyisobutene butanediimide and the technique for sensitizing the chemical foaming agent are used.

Description

technical field [0001] The present invention relates to emulsion explosives for blasting operations. Background technique [0002] The main manifestations of abnormal blasting in coal mines are: the coal mine’s permissible explosives and detonators that have passed the ground quality inspection often have abnormal blasting phenomena such as reduced coal collapse capacity, residual explosives, deflagration and blast rejection in the actual underground blasting. The investigation results show that it is due to The charge passivation phenomenon is caused, that is, the stress wave generated by the first blasting hole pre-compresses the charge adjacent to the secondary blasting hole, so that the charge of the blasting hole will have induction detonation, detonation sensitivity reduction, or even blast rejection and other abnormal blasting phenomena At the same time, this stress wave may also reduce or lose the detonation ability of the detonator, or make its ignition time drift. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06B31/28C06B45/00C06B21/00
Inventor 高铭张少波滕威徐建设李勇
Owner CHINA COAL TECH & ENG GRP HUAIBEIBLASTING TECHN RES INST
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