Heavy ammonium nitrate-fuel oil explosive with detonator sensitivity produced by using chemical sensitization

A technology of detonator sensitivity and ammonium explosives, which is applied to explosives and other directions, can solve the problems of inconvenience, lack of detonator sensitivity, and poor detonation performance of heavy ammonium explosives, and achieves the effects of fine bubbles, fast foaming speed, and good detonator sensitivity.

Inactive Publication Date: 2012-07-04
谢斌
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] But the detonation performance of heavy ammonium oil explosive is poor, itself does not have detonator sensitivity (can not detonate effectively with a No. 8 industrial detonator usually), its use is limited to the blast hole of large diameter (more than 100mm) and must use priming charge and cannot It is used in small and medium diameter blastholes (such as 50mm), which brings great inconvenience to the use

Method used

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  • Heavy ammonium nitrate-fuel oil explosive with detonator sensitivity produced by using chemical sensitization
  • Heavy ammonium nitrate-fuel oil explosive with detonator sensitivity produced by using chemical sensitization
  • Heavy ammonium nitrate-fuel oil explosive with detonator sensitivity produced by using chemical sensitization

Examples

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Effect test

Embodiment 1

[0049] Latex matrix formula (mass percentage): ammonium nitrate: 82.1%, water: 11.5%, composite wax: 4.2%, sorbitan oleate: 2.2%;

[0050] Foaming agent formula (mass percentage): sodium nitrite: 15%, water: 85%;

[0051] Accelerator formula (mass percentage): H 2 C 8 h 4 o 4 -HC 8 h 4 o 4 - : 43%, magnesium nitrate: 5%, water: 51.5%, T-80: 1.5%;

[0052] Ammonium oil explosive formula (mass percentage): porous granular ammonium nitrate: 94.5%, diesel oil: 5.5%.

[0053] Implementation steps:

[0054] Preparation of porous granular ammonium oil explosives: use special equipment in advance, mix porous granular ammonium nitrate and diesel oil according to the formula requirements, put them into the ammonium oil explosives preparation tank, and set aside;

[0055] Preparation of latex matrix: According to the formula requirements, the ammonium nitrate is crushed and fully dissolved in water, and the temperature is kept at 95°C to make a water phase solution; after the c...

Embodiment 2

[0059] Latex matrix formula (mass percentage): ammonium nitrate: 73.4%, sodium nitrate: 8%, water: 10%, paraffin wax: 2%, microcrystalline wax: 2%, succinate: 2.6%;

[0060] Foaming agent formula (mass percentage): sodium nitrite: 20%, water: 80%;

[0061] Accelerator formula (mass percentage): H 3 PO 4 -H 2 PO 4 - : 40%, magnesium nitrate: 5%, water: 53.5%, LAE-9: 1.5%;

[0062] Ammonium oil explosive formula (mass percentage): porous granular ammonium nitrate: 94.5%, diesel oil: 5.5%.

[0063] Implementation steps:

[0064] Preparation of porous granular ammonium oil explosives: use special equipment in advance, mix porous granular ammonium nitrate and diesel oil according to the formula requirements, put them into the ammonium oil explosives preparation tank, and set aside;

[0065] Preparation of latex matrix: According to the requirements of the formula ratio, the ammonium nitrate and sodium nitrate are crushed and fully dissolved in water, and the temperature is k...

Embodiment 3

[0069] Latex matrix formula (mass percentage): ammonium nitrate: 81%, water: 12.2%, microcrystalline wax: 2.5%, vaseline: 2%, succinate: 2.3%;

[0070] Foaming agent formula (mass percentage): sodium nitrite: 25%, water: 75%;

[0071] Accelerator formula (mass percentage): H 3 PO 4 -HPO 4 2- : 45%, calcium nitrate: 5%, water: 49.5%, T-80: 1.5%;

[0072] Ammonium oil explosive formula (mass percentage): porous granular ammonium nitrate: 94.5%, diesel oil: 5.5%.

[0073] Implementation steps:

[0074] Preparation of porous granular ammonium oil explosives: use special equipment in advance, mix porous granular ammonium nitrate and diesel oil according to the formula requirements, put them into the ammonium oil explosives preparation tank, and set aside;

[0075] Preparation of latex matrix: According to the formula requirements, the ammonium nitrate is broken and fully dissolved in water, and the temperature is kept at 100°C to make a water phase solution; after the composi...

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Abstract

The invention relates to a heavy ammonium nitrate-fuel oil explosive with detonator sensitivity produced by using chemical sensitization and a preparation method thereof. The heavy ammonium nitrate-fuel oil explosive comprises the following components in percentage by mass: 5-55 percent of emulsion explosive and 45-95 percent of porous granular ammonium nitrate-fuel oil explosive. The preparationmethod comprises the following steps of: preparing the porous granular ammonium nitrate-fuel oil explosive; preparing a latex matrix; sensitizing the latex matrix; and mixing the emulsion explosive with the porous granular ammonium nitrate-fuel oil explosive. The heavy ammonium nitrate-fuel oil explosive with detonator sensitivity has small critical diameter, favorable detonator sensitivity and large capacity power without igniting an igniting primer, and can be used for various blasting engineering, such as medium-small blast hole, big hole diameter and upward fan-shaped medium-length hole, and the like. In the invention, the chemical sensitization is carried out by utilizing a brand new and quick chemical foaming agent at the same time. The novel quick chemical foaming agent has the characteristics of high foaming speed, thoroughly eliminated after-effect and fine and stable bubbles, and is a novel safe and effective chemical sensitization technique.

Description

technical field [0001] The present invention relates to the field of industrial explosives, more specifically to a heavy ammonium oil explosive with improved explosive performance and a production method thereof, and also to a sensitization method for this type of explosive and a new fast chemical foaming agent composition. Background technique [0002] As a special energy material, industrial explosives are widely used in engineering blasting. The use of porous granular ammonium oil explosives (ANFO) has a long history. It is mainly composed of porous granular ammonium nitrate (AN) and diesel oil (FO) mixed in a certain proportion. Now it is still one of the preferred explosives in areas with suitable environments. one. Porous granular ammonium oil explosives are cheap and widely used in various engineering blasting, but they have high water absorption and low energy per unit volume (the bulk density is low, about 0.8g / cm 3 ) is its biggest flaw. In order to improve its...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06B31/28
Inventor 谢斌
Owner 谢斌
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