Low-detonation-velocity explosive welding granular emulsion explosive and preparation method thereof

A technology of emulsified explosives and explosive welding, which is applied to explosives processing equipment, explosives, non-explosive/non-thermal agent components, etc. It can solve the problems of explosive moisture absorption and unstable detonation velocity, high labor intensity of workers, and uneven mixing of explosives, etc., to achieve Reduce labor intensity, facilitate drug distribution, and not easy to absorb moisture

Pending Publication Date: 2022-07-12
ANHUI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of high production cost, on-site mixing of explosives to pollute the environment, poor safety, high labor intensity of workers, uneven mixing of explosives, hygroscopicity of explosives, and unstable detonation velocity in the existing explosive welding explosives. A preparation method of detonation velocity explosion welding granular emulsion explosive, which has the advantages of simple preparation process, and the prepared explosive has the advantages of uniform particles, good fluidity, safe use and stable detonation velocity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The present embodiment provides a preparation method of a granular emulsion explosive, and the operation steps of the preparation are as follows:

[0042](1) Weigh 43.18Kg of ammonium nitrate, 2.75Kg of sodium nitrate, 5.22Kg of water, heat and mix to 105°C to obtain the water phase;

[0043] Weigh 1Kg diesel oil, 1.48Kg engine oil, 1.37Kg SP-80 emulsifier, heat and mix to 100℃ to obtain oil phase;

[0044] (2) adding the water phase to the oil phase, the rotating speed is 1000 rev / min, stirring and mixing for 3 minutes to obtain a latex matrix;

[0045] (3) stirring, dispersing and mixing in 55kg of just prepared latex matrix, 20Kg of diatomite and 25Kg of marble powder to form a uniform and loose material;

[0046] The obtained material is cooled to below 45°C and passed through a 10-mesh sieve to obtain the granular emulsion explosive.

[0047] After testing, the properties of the product prepared above: when the thickness of the medicine is 32mm, the density of th...

Embodiment 2

[0049] The present embodiment provides a preparation method of granular emulsion explosive, and the operation steps of preparation are as follows:

[0050] (1) Weigh 60.55Kg of ammonium nitrate, 1.4Kg of sodium nitrate, 4.2Kg of water, heat and mix to 100°C to obtain water phase;

[0051] Weigh 1.4Kg diesel oil, 1.4Kg paraffin wax, 1.05Kg T-152 polymer emulsifier, heat and mix to 100℃ to obtain oil phase;

[0052] (2) adding the water phase to the oil phase, the rotating speed is 980 rev / min, stirring and mixing for 3 minutes to obtain a latex matrix;

[0053] (3) stirring, dispersing and mixing in 70kg of latex matrix just prepared, 15Kg of diatomite particles, and 15Kg of marble powder to form a uniform and loose material;

[0054] The obtained material is cooled to below 45°C and passed through a 10-mesh sieve to obtain the granular emulsion explosive.

[0055] After testing, the properties of the product prepared above: when the thickness of the medicine is 40mm, the den...

Embodiment 3

[0057] The present embodiment provides a preparation method of granular emulsion explosive, and the operation steps of preparation are as follows:

[0058] (1) Weigh 50.5Kg of ammonium nitrate, 2.5Kg of sodium nitrate, 5.62Kg of water, heat and mix to 105°C to obtain water phase;

[0059] Weigh 2Kg of engine oil, 0.63Kg of paraffin, 1.25Kg of SP-80 emulsifier, heat and mix to 100°C to obtain an oil phase;

[0060] (2) adding the water phase to the oil phase, the rotating speed is 1050 rev / min, stirring and mixing for 3 minutes to obtain a latex matrix;

[0061] (3) stirring, dispersing and mixing in 62.5kg of just prepared latex matrix, 17.5Kg of diatomite and 20Kg of marble powder to form a uniform and loose material;

[0062] The obtained material is cooled to below 45°C and passed through a 10-mesh sieve to obtain the granular emulsion explosive.

[0063] After testing, the properties of the product prepared above: when the thickness of the medicine is 32mm, the density o...

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Abstract

The invention belongs to the technical field of industrial explosives, and particularly relates to a low-detonation-velocity explosive welding granular emulsion explosive and a preparation method thereof.The method comprises the steps that 1, ammonium nitrate, sodium nitrate and water are mixed, heated and dissolved till the temperature of the solution is 95-115 DEG C, and a water phase is prepared for use; mixing an emulsifier and fuel oil, and heating until the temperature of the solution is 90-100 DEG C to prepare an oil phase for later use; (2) slowly adding the water phase prepared in the step (1) into the oil phase, and stirring and mixing to prepare an emulsion matrix; and (3) adding the emulsion matrix just prepared in the step (2) into a mixture of diatomite and marble powder, dispersing and mixing uniformly, cooling to below 45 DEG C, and sieving by a 10-mesh sieve to obtain the granular emulsion explosive. The method provided by the invention has the advantage of simple preparation process, and the prepared explosive has the advantages of uniform particles, good free-running property, safety in use and stable detonation velocity.

Description

technical field [0001] The invention belongs to the technical field of industrial explosives, in particular to a low-explosive-velocity-explosive-welded granular emulsion explosive and a preparation method thereof. Background technique [0002] Metal explosion welding is an application direction of low-explosive explosives. Specifically, the energy generated by the explosion of the explosives is used to make the metal plate interfaces closely combine due to severe plastic deformation under pressure to form a good welding interface. In the process of metal explosion welding, the detonation speed of the explosive used is too high, which will make it too late to exhaust the two welded plates, resulting in bulging between the welding interfaces; if the detonation speed of the explosive is too low, the impact force of the cladding plate will be weak, resulting in welding. Interface bonding is not strong. Therefore, the detonation velocity of the explosives used must be controlle...

Claims

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Application Information

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IPC IPC(8): C06B31/28C06B23/00C06B21/00C06D5/10
CPCC06B31/285C06B23/007C06B21/0008C06D5/10
Inventor 黄文尧孙宝亮牛草原潮捷檀鑫胡洁孙颜臣
Owner ANHUI UNIV OF SCI & TECH
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