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 wat

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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