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Modified ammonium nitrate-fuel oil explosive for explosive welding and preparation method of modified ammonium nitrate-fuel oil explosive

A technology of ammonium oil explosives and explosive welding, which is applied in the direction of explosives, etc., can solve the problems of strong destructive power, high explosive density, high explosive performance such as violence and detonation velocity, and achieve the effect of ensuring safety

Active Publication Date: 2013-04-24
LIAONING HONGSHAN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ordinary modified ammonium oil explosives have high density, high explosive performance such as violent force and detonation velocity, and strong destructive ability to the medium in contact with them during explosion, so they are not suitable for direct use in explosive welding of metal materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A modified ammonium oil explosive for explosive welding. The ratio of raw materials is: 69.7% of ammonium nitrate, 0.3% of composite modifier, 2.5% of composite oil phase, 9.5% of wood powder, 15.0% of refined salt, and 3.0% of expanded perlite.

[0014] Preparation process steps:

[0015] (1) According to the proportion of raw materials, mix and pulverize the weighed ammonium nitrate with a weight percentage of 69.7% and 0.3% composite modifier, and dry at 80°C to 95°C until the water content of the material is not more than 0.2%;

[0016] (2) Add 2.5% by weight composite oil phase to the dry material and mix evenly at 80°C to 95°C;

[0017] (3) Put 9.5% wood flour by weight into the cold mixer, add refined salt with 15.0% by weight after mixing for 5 minutes, mix for another 5 minutes, then add expanded perlite with 3.0% by weight, and finally After mixing for 5 minutes, the material is discharged, and the water content of the mixed powder is not more than 0.3%;

[...

Embodiment 2

[0020] A modified ammonium oil explosive for explosive welding. The ratio of raw materials is: 70.0% ammonium nitrate, 0.3% composite modifier, 2.3% composite oil phase, 9.7% wood powder, 14.5% refined salt, and 3.2% expanded perlite.

[0021] Preparation process steps:

[0022] (1) According to the proportion of raw materials, the weighed ammonium nitrate with a weight percentage of 70.0% and 0.3% composite modifier were mixed and pulverized, and dried at 80°C to 95°C until the water content of the material was not more than 0.2%;

[0023] (2) Add 2.3% by weight composite oil phase to the dry material and mix evenly at 80°C to 95°C;

[0024] (3) Send 9.7% wood flour by weight into the cold mixer, add 14.5% refined salt after mixing for 5 minutes, mix for another 5 minutes, then add 3.2% expanded perlite by weight, and finally After mixing for 5 minutes, the material is discharged, and the water content of the mixed powder is not more than 0.3%.

[0025] (4) Packaging for sp...

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Abstract

The invention discloses a modified ammonium nitrate-fuel oil explosive for explosive welding and a preparation method of the modified ammonium nitrate-fuel oil explosive. According to the modified ammonium nitrate-fuel oil explosive, the density of the explosive is decreased by using expanded perlite, and the explosive performance of the explosive is reduced by using refined salt. The preparation method comprises the following steps of: weighing ammonium nitrate and a composite modifier according to proportions of raw materials, mixing, crushing, and drying at 80-95 DEG C; adding a composite oil phase into the dried materials, and mixing uniformly at 80-95 DEG C; and conveying wood powder, the refined salt and the expanded perlite into a cold mixer in turn, and mixing uniformly. The explosive performances, such as the density, the brisance and the explosion speed, are improved by adjusting the proportions of the raw materials of the modified ammonium nitrate-fuel oil explosive and adjusting the production process, so that the explosive can be ensured to meet explosive welding requirements of different metal materials.

Description

technical field [0001] The invention relates to the field of industrial technology, in particular to a modified ammonium oil explosive used for explosive welding and a preparation method thereof. Background technique [0002] Explosion welding is a solid-phase welding method that uses the impact force generated by explosive explosion to cause rapid collision of workpieces to achieve welding. It is mainly used for welding between different metal materials. Explosive welding has very strict requirements on performance indicators such as detonation speed, intensity and bulk density of powdery explosives. It can not only ensure good welding effect, but also can not damage the metal plate. Ammonium oil explosives. Ordinary modified ammonium oil explosives have high density, high explosive performance such as violent force and detonation velocity, and strong destructive ability to the medium in contact with them during explosion, so they are not suitable for direct use in explosi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B31/30
Inventor 李新富徐桂苹李剑飞栾迪
Owner LIAONING HONGSHAN CHEM
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