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High-looseness high-sensitivity ammonium nitrate fuel oil explosive for explosion welding and preparation method thereof

A technology of high-sensitivity ammonium oil and explosive welding, which is applied in the direction of explosives, can solve the problems of anti-caking and improvement of detonation sensitivity that have not been completely successful, and achieve the effects of excellent fluidity of explosives, safe and convenient use, and remarkable effects

Inactive Publication Date: 2012-05-02
殷海权
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the above-mentioned invention has made some improvements to the variety and performance of explosives, it has not been completely successful in solving anti-caking and improving detonation sensitivity.

Method used

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  • High-looseness high-sensitivity ammonium nitrate fuel oil explosive for explosion welding and preparation method thereof
  • High-looseness high-sensitivity ammonium nitrate fuel oil explosive for explosion welding and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] 1 implement according to the best formula (mass %) as follows:

[0039] 94 Porous granular ammonium nitrate

[0040] 5.7 Fuel oil

[0041] 0.3 Composite improver

[0042] Wherein the composite improver is implemented by the following optimum composition (mass %);

[0043] 70 Crystal modifier: octadecyl primary amine borate

[0044] 15 Dispersant: Sodium Methylene Dimethyl Naphthalene Sulfonate

[0045] 6 Lubricant: stearic acid

[0046] 8 Adsorbent: sepiolite

[0047] 1 Neutralizing agent: urea

[0048] Preparation of composite improver: First, bake 8kg of sepiolite in an oven at 80-90°C for 4 hours, then put 70kg of octadecyl primary amine borate and 6kg of stearic acid in a ball mill with a rotation speed of 40r / min Pulverize, the fineness needs to be more than 425 μm and 80% or more; then add the above three qualified raw materials together with 15 kg of dispersant sodium methylene bismethylnaphthalene sulfonate and 1 kg of urea into a double-layer spiral stru...

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Abstract

The invention provides a high-looseness high-sensitivity ammonium nitrate fuel oil explosive for explosion welding and a preparation method thereof. The high-looseness high-sensitivity ammonium nitrate fuel oil explosive is characterized by comprising a powdery compound modifying agent and aiming at solving the unsolved problems of easily serious agglomeration under severe environments of rainy reason, foggy days and the like, low detonation sensitivity during winter charge, poor explosion propagation property when a large board explodes and compounds during the practical use of the traditional porous ammonium nitrate fuel oil explosive. The added powdery compound modifying agent comprises a crystal pattern transition agent, a dispersing agent, a lubricating agent, an absorbing agent and a centralite. The preparation method comprises the steps of: adding the compound modifying agent and the porous granulated ammonium nitrate together into an edge runner mill, raising the temperature to ensure that the porous ammonium nitrate is sensitized through crystal transition, and then adding fuel oil after the temperature is reduced, and evenly stirring and mixing at low temperature to obtain the modified porous ammonium oil explosive with good looseness, high detonation sensitivity and explosion propagation distance of exceeding 5m. The invention is especially suitable for the large-board compound explosive welding engineering.

Description

technical field [0001] The invention relates to an ammonium oil explosive for explosive welding and a preparation method thereof, in particular to a high-loose and high-sensitivity ammonium oil explosive and a preparation method thereof. Background technique [0002] Ammonium oil explosives made of porous granular ammonium nitrate as the main oxidant and fuel oil as the reducing agent refer to a class of low detonation velocity explosives with a stable detonation velocity in the range of 2500-2800m / s. Because this type of explosive does not use strong explosives such as TNT or RDX as the explosion energy source, and the source of raw materials is abundant, the composition and preparation process are simple, and the production cost is relatively low. Small and other characteristics, so it is still widely used in metal explosion welding (composite), smooth blasting operations, urban control blasting and metal explosion forming and other fields. However, in actual use, there a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06B31/28
Inventor 殷海权李正华卫国光殷翔杨前生
Owner 殷海权
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