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Special water-gel explosive for extremely-cold environment and preparation method thereof

A water-gel explosive, high-cold technology, applied in the direction of explosives, etc., can solve the problems of unfavorable industrialization promotion of water-gel explosives, unfavorable safe production of explosives, and increasing the cost of explosives, etc.

Inactive Publication Date: 2017-08-29
淮北矿业控股股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, some progress has been made in the research on the antifreeze of water-gel explosives at home and abroad, mainly because high-energy substances and even strong explosives such as RDX are added to water-gel explosives. This is not only not conducive to the safe production of explosives, but also significantly Increased the cost of explosives, which is not conducive to the industrialization of water-gel explosives

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] According to the preparation method of special water-gel explosives for alpine environment:

[0026] Step 1: crushing the crystallization point-lowering compound into particles with a diameter not greater than 5 mm;

[0027] Step 2: After pulverizing one or several kinds of oxidants, mix them evenly with the gelling agent;

[0028] Step 3: Dissolve one or more of the remaining oxidants into an oxidant aqueous solution with a concentration of 70-78%, and keep the temperature at 75°C±5°C;

[0029] Step 4: Heat the sensitizer aqueous solution with a concentration of 78-87%, and keep the temperature at 70°C±5°C;

[0030] Step 5: Add the sensitizer aqueous solution prepared in step 4, the mixed oxidizing agent aqueous solution prepared in step 3, the crystallization point-reducing compound prepared in step 1, and the mixture prepared in step 2 to the stirrer successively, And crystal form control agent, after mixing and stirring, adjust the pH value of the system to 4.0-5....

Embodiment 2

[0034] The water-gel explosive prepared according to the preparation method of the special water-gel explosive for the alpine environment has a composition (by mass percentage) of:

[0035] Concentration 78-87% methylamine nitrate aqueous solution 30.0%, concentration 70-78% ammonium nitrate aqueous solution 25.0%, sodium nitrate 30.0%, potassium perchlorate 5.5%, guar gum 1.20%, coating grade aluminum powder 2.5%, N, N- Dimethylformamide 3.0%, dextrin 0.5%, hydrophobic expanded perlite 2.0%, hatching protein: 0.1%, cross-linking agent: 0.20.

[0036] The antifreeze temperature of the water gel explosive: -22°C; the density is 1.11g / cm 3 ; Detonation: 3cm; Detonation velocity: 3650m / s.

Embodiment 3

[0038] The water-gel explosive prepared according to the preparation method of the special water-gel explosive for the alpine environment has a composition (by mass percentage) of:

[0039] Concentration 78-87% methylamine nitrate aqueous solution 40.0%, concentration 70-78% ammonium nitrate aqueous solution 20.5%, sodium nitrate 25.0%, ammonium perchlorate 2.0%, guar gum 0.80%, coating grade aluminum powder 1.5%, N, N-Dimethylacetamide 4.5%, Sodium Lauryl Sulfonate 0.1%, Hydrophobic Expanded Perlite 5.0%, Hatching Protein: 0.30%, Crosslinking Agent: 0.30%.

[0040] The antifreeze temperature of the water gel explosive: -20°C; the density is 1.15g / cm 3 ; Detonation: 3cm; Detonation velocity: 3800m / s.

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Abstract

The invention discloses a special water-gel explosive for an extremely-cold environment. In allusion to the reason for loss of detonator sensitivity during the use of the water-gel explosive in the extremely-cold environment, through a reasonable formula and a reasonable technology, the frost resistance and the detonator sensitivity of the water-gel explosive in the extremely-cold environment are improved, still good detonator sensitivity and explosive performance of the water-gel explosive in the extremely-cold environment of -25 DEG C are achieved, and using requirements are met. The special water-gel explosive for the extremely-cold environment overcomes the technical difficulties that a detonator of an ordinary water-gel explosive cannot be detonated smoothly in an extremely-cold environment of 25 DEG C below zero and the like, and meets the requirements when a user uses the water-gel explosive for blasting in the extremely-cold environment.

Description

technical field [0001] The invention relates to a special water-gel explosive for high-cold environment and a preparation method thereof, belonging to the technical field of explosives. Background technique [0002] Water-gel explosive is a kind of safe and environment-friendly industrial explosive. It has excellent explosive performance, good water resistance, simple production process, and no pollution. It is a variety encouraged to be developed and applied by the civil explosive industry. Water-gel explosives have been widely used in my country, but the detonation sensitivity of water-gel explosives decreases with the decrease of temperature. A large number of tests show that water-gel explosives lose the detonation sensitivity of detonators at -5°C. [0003] There is a large area of ​​high-cold environment in winter in my country, and ordinary water-gel explosives cannot be used normally in the high-cold environment. Therefore, it is of great practical significance to de...

Claims

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Application Information

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IPC IPC(8): C06B33/14
CPCC06B33/14
Inventor 张书华陈天云黄如胜张伟周春玲
Owner 淮北矿业控股股份有限公司
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