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Method and equipment for preparing powder explosive

A manufacturing method and technology of explosives, applied in the direction of explosives processing equipment, explosives, offensive equipment, etc., can solve the problems of poor explosive performance, long drying time, high production cost, etc., to solve the problem of agglomeration, increase the sensitivity of explosives, The effect of reducing production energy consumption

Inactive Publication Date: 2008-10-15
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, ammonium nitrate begins to crystallize, due to the grain The growth process cannot be effectively controlled, and its dispersion uniformity is still poor, which directly affects the explosive performance of ammonium oil explosives; (2) using normal pressure drying to remove water, long drying time and high energy consumption
There are also poor production safety, huge equipment, high energy consumption, and high production costs; the surfactants used have no anti-caking function, and the product is still easy to agglomerate and has poor performance.
[0011] Chinese invention patent application CN 1513834A discloses a "milk swelling explosive and its manufacturing method". The product produced by this method is easy to agglomerate and has poor explosive performance; the line speed of emulsification and stirring is still high, and the production safety is still not enough Ideal; the operating temperature of each step is high, and the vacuum degree required for vacuum drying is also high, so the energy consumption is also high; the production cost is also high

Method used

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  • Method and equipment for preparing powder explosive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Weigh 795 kg of ammonium nitrate, 100 kg of water, 50 kg of white wax, 5 kg of cocoyl dimethyl ammonium oxide, 50 kg of mixture of phosphate starch sodium salt and iron oxide yellow.

[0026] Manufacturing steps: (1) make ammonium nitrate and water at 120°C to make a water phase mixture; (2) make cocoyl dimethyl ammonium oxide and white wax at a temperature of 95°C to make an oil phase mixture; (3) Add the water-phase material into the oil-phase material, and emulsify into a thin water-in-oil emulsion at a temperature of 95°C and an emulsification stirring line speed of 0.3m / s. (4) The thin emulsion is continuously pumped into the belt (5) After cooling, add the mixture of phosphate starch sodium salt and iron oxide yellow to obtain rock milk swelling explosive. The product performance is tested by explosion performance: density, 0.88g / cm 3 , the working capacity is 340ml, the force is 15mm, the detonation is 10cm, the detonation velocity is 3900m / s, and the shelf life...

Embodiment 2

[0028]Weigh 765kg of ammonium nitrate, 30kg of potassium chloride, 100kg of water, 50kg of white wax, 5kg of cocoyl dimethyl ammonium oxide, 50kg of phosphate starch sodium salt and iron oxide yellow mixture.

[0029] Manufacturing steps: (1) Make ammonium nitrate, potassium chloride, and water at a temperature of 105°C to make a water phase mixture; (2) Make 5kg of cocoyl dimethyl ammonium oxide and white wax into an oil phase at a temperature of 100°C Mixture; (3) Add the water phase material to the oil phase material, and emulsify into a thin water-in-oil emulsion at a temperature of 100°C and an emulsification stirring line speed of 0.4m / s; (4) Thin emulsification The liquid is continuously pumped into the disc dryer, and its vacuum drying absolute pressure is 0.02MPa; (5) After cooling, the mixture of phosphate starch sodium salt and iron oxide yellow is added to prepare the coal mine first-class milk expansion explosive. The product performance is tested by explosion per...

Embodiment 3

[0031] Take by weighing 795kg of ammonium nitrate, 100kg of water, 50kg of white wax, and 5kg of cocoyl dimethyl ammonium oxide.

[0032] Manufacturing steps: (1) Prepare ammonium nitrate and water at a temperature of 115°C to make a water phase mixture; (2) Make an emulsifying dispersant and white wax to make an oil phase mixture at a temperature of 105°C; (3) Add water phase materials to The oil phase material is emulsified into a thin water-in-oil emulsion at a temperature of 105°C and an emulsification stirring line speed of 0.4m / s. (4) The thin emulsion is continuously atomized through a pressure nozzle, vacuum Dried into powder, the aperture of the pressure nozzle is 2mm, the operating pressure is 0.30MPa, the temperature of the material before atomization is 110°C, and the absolute pressure of vacuum drying is 0.020MPa; (5) After cooling, the rock-modified ammonium oil explosive is obtained. The product performance is tested by explosion performance: density, 0.95g / cm ...

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Abstract

The invention discloses a making method and equipment of powder-shaped explosive, which comprises the following parts: 70-92% oxidant, 5-12% water, 2-6% fuel agent, 0.1-0.9% emulsifying dispersant, 0-10% modified additive and 0-10% flame damping agent. The making method comprises the following steps: (1) dissolving oxidant, flame damping agent and water into water-phase material at 100-300 deg.c; (2) fusing fuel agent and emulsifying dispersant into oil-phase material at 90-110 deg.c; (3) adding oil-phase material in the water-phase material; blending at low-speed emulsifying or blending statically to form emulsion or suspension; (4) pulverizing.

Description

technical field [0001] The invention relates to a manufacturing method and equipment for powdery explosives, in particular to a manufacturing method and equipment for stepless powdery explosives. Background technique [0002] Powdered ammonium nitrate explosives are currently the most widely used industrial explosives, mainly including ammonium ladder explosives and ammonium oil explosives. Generally speaking, ammonium-titer explosives contain a strong explosive sensitizer, TNT, and its explosive performance is better than that of ammonium oil explosives, but TNT is a toxic component, harmful to the human body, and the cost is high. Ammonium oil explosives are low in cost and simple in production process, but have poor explosive performance, are prone to oil leakage and deterioration, and have poor storage performance. Both of the above are easy to absorb moisture and agglomerate, have poor water resistance, and because of the low detonation velocity, they cannot meet the n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06B31/28C06B21/00
Inventor 唐秋明吴应飙白文忠
Owner SHIJIAZHUANG SUCCESS MACHINERY ELECTRICAL