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Powdery ammonium nitrate explosives and preparation method thereof

A kind of ammonium nitrate explosive and powdery technology, which is applied in the direction of explosives, etc., to achieve the effect of reducing the height of the house, reducing energy consumption, and having a large volume and power

Inactive Publication Date: 2012-07-04
SHIJIAZHUANG SUCCESS MACHINERY ELECTRICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of this explosive is that it does not contain TNT, which improves the explosive performance of the ammonium oil explosive, but there are still the following problems: (1) during the mixing and drying process of the oil-in-water emulsion in the wheel mill, the ammonium nitrate begins to crystallize and mixes with the oil phase materials and additives such as wood flour, this process still belongs to mechanical mixing, which can only improve the coating condition of the oil film on the surface of ammonium nitrate in the prior art to a certain extent, and cannot completely solve the moisture-proof and anti-caking problems of explosives and the obvious Improve water resistance; because the grain growth process cannot be effectively controlled, its dispersion uniformity is still poor, which directly affects the explosive performance of ammonium oil explosives; (2) Drying at normal pressure to remove water, long drying time, and energy consumption high
This method has high production temperature, high energy consumption and low product density

Method used

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  • Powdery ammonium nitrate explosives and preparation method thereof
  • Powdery ammonium nitrate explosives and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Weigh 860kg of ammonium nitrate, 30kg of water, 40kg of composite oil phase (20kg of white wax, 15kg of ceresin wax, 5kg of dodecylamine acetate), 30kg of steam, loosening agent (5kg of sodium sulfate starch, 10kg of iron oxide yellow, wood Powder 15kg, talcum powder 10kg) 40kg.

[0027] Manufacturing steps: First step: crush ammonium nitrate into 1~3mm powder pellets, then add ammonium nitrate pellets, water, compound oil phase, and steam into the mixing dryer and heat to 80°C to make a paste;

[0028] The second step: the paste is vacuum-dried into a powder in the mixing dryer, and the vacuum drying absolute pressure is 0.01Mpa; the third step: the powder is powdered into a fine powder;

[0029] Step 4: After cooling, add loosening agent. The discharge temperature is 35±5℃.

[0030] Product performance tested: charge density 0.98g / cm 3 , The explosive velocity is 3552m / s, the intensity is 14.2mm, the blasting distance is 70mm, and the explosive force is 355ml.

Embodiment 2

[0032] Weigh 950kg of ammonium nitrate, 70kg of water, 60kg of compound oil phase (55kg of white wax, 5kg of dodecylamine acetate), and 30kg of loosening agent (15kg of sodium sulfate starch, 15kg of calcium powder).

[0033] Manufacturing steps: First step: After crushing ammonium nitrate into 1~3mm powder pellets, mix with water under heating to form a water phase paste at 90℃, and then mix with oil phase materials to form a semi-finished paste

[0034] The second step: the paste is vacuum-dried into powder in a general-purpose tray dryer, and the absolute pressure of the vacuum drying is 0.025Mpa:

[0035] The third step: pulverize the powder into fine powder;

[0036] Step 4: After cooling, add loosening agent. The discharge temperature is 35±5℃.

[0037] Product performance tested: charge density 0.96g / cm 3 , The explosive velocity is 3672m / s, the intensity is 15.1mm, the blasting distance is 80mm, and the explosive force is 365ml.

Embodiment 3

[0039] Weigh 800kg of ammonium nitrate, 20kg of water, 30kg of composite oil phase (20kg of ozokerite, 10kg of cetylamine acetate)

[0040] Manufacturing steps: the first step: mix ammonium nitrate with water to 110°C under heating, and then mix it with 1-3mm powder particles and oil phase materials to form a semi-finished paste

[0041] The second step: the paste is vacuum dried into powder in a universal vacuum machine, and the absolute pressure of the vacuum drying is 0.005Mpa;

[0042] The third step: pulverize the powder into fine powder;

[0043] Step 4: Cool down to a temperature of 35±5°C.

[0044] Product performance tested: charge density 0.95g / cm 3 , The explosive velocity is 3772m / s, the intensity is 16.1mm, the blasting distance is 90mm, and the explosive force is 380ml.

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Abstract

The invention discloses a preparation method of power ammonium nitrate explosive and the equipment. The ammonium nitrate explosive is made of ammonium nitrate, water and complex oil phase, wherein, the complex oil phase is one of or the combination of the following elements: white wax, ozokerite, lauryl amine and the acetate, hexadecylamine and the acetate, octadecylamine and the acetate, and stearinic acid. The weight proportion among the ammonium nitrate, water and complex oil phase are from 80-95 to 1-10 to 3-6. The preparation method is as follows: 1) mixing: mixing ammonium nitrate, flame inhibitor, water (or water vapor) and complex oil phase into partly dissolved pastymass at 70 to 110 DEG C; and 2) power preparation: drying the pastymass to power under the pressure of 0.005 to 0.025MPa. The invention also comprises a vacuum mixer. The invention has the advantages of simple technique, safe and reliable production, large density and good explosive property; the production energyconsumption can be reduced by 90 percent.

Description

technical field [0001] The invention belongs to the field of explosives, and more specifically, the invention discloses an explosive, its preparation method and preparation equipment. Background technique [0002] Due to the disadvantages of the earliest rock ammonium-antimony explosives containing toxic components TNT, high product cost, and easy moisture absorption and caking, my country has researched and developed powdered ammonium-antimony oil explosives since the 1980s, reducing TNT to 3- 7%, the explosive performance is close to the level of No. 2 rock powdered ammonium ladder explosive, which improves the anti-caking ability of powdered ammonium nitrate explosive to a certain extent and reduces the pollution of TNT dust in the production process, but it does not fundamentally overcome the existing There are technical downsides. In order to overcome the shortcomings of the above-mentioned technologies, the Changsha Research Institute of Mining and Metallurgy proposed ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06B31/28
Inventor 唐秋明
Owner SHIJIAZHUANG SUCCESS MACHINERY ELECTRICAL