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Method for preparing firework composition by boiling granulation process

A technology of pyrotechnic agent and boiling granulation, which is applied in the direction of explosives, etc., can solve the problems of easy explosion hazard and low efficiency, and achieve the effects of stable discharge performance, uniform agent particles, and good fluidity

Inactive Publication Date: 2011-10-19
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a pyrotechnic agent preparation method using boiling granulation to solve the problems that the granulation process in the preparation of traditional pyrotechnic agents is mainly manual operation, low efficiency, and prone to explosion hazards.

Method used

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  • Method for preparing firework composition by boiling granulation process
  • Method for preparing firework composition by boiling granulation process
  • Method for preparing firework composition by boiling granulation process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The formula of the pyrotechnic agent used is:

[0014]

[0015] (1) Weigh 3.32kg, 0.676kg, 1.576kg, 0.732kg and 1.688kg of fine powdered sulfur powder, aluminum powder, magnesium aluminum alloy powder, potassium nitrate and barium nitrate respectively, and use them in the boiling granulator Air flow at a velocity of 1 m / s was mixed for 5 min.

[0016] (2) 0.2kg fine powdery cooked glutinous rice flour is made into an aqueous solution with a mass fraction of 5%.

[0017] (3) Atomize the solution prepared in (2) at a rate of 100ml / min under a pressure of 0.3MPa and spray it into the boiling granulator in (1), while using a rate of 1m / s and a temperature of 50°C The airflow prepares the atomized solution and the fine powder medicine into granular medicine, and obtains the medicine product after drying.

[0018] The pyrotechnic agent prepared by the method has uniform particles, good fluidity and no dust. The discharge effect of the fireworks and firecrackers produced...

Embodiment 2

[0020] The formula of the pyrotechnic agent used is:

[0021]

[0022] (1) Weigh 3.32kg, 0.676kg, 1.576kg, 0.732kg and 1.688kg of fine powdered sulfur powder, aluminum powder, magnesium aluminum alloy powder, potassium nitrate and barium nitrate respectively, and use them in the boiling granulator Air flow at a velocity of 1.5 m / s was mixed for 5 min.

[0023] (2) 0.24kg fine powdery cooked glutinous rice flour is made into an aqueous solution with a mass fraction of 6%.

[0024] (3) Atomize the solution prepared in (2) at a rate of 150ml / min under a pressure of 0.4MPa and spray it into the boiling granulator in (1), while using a rate of 1.5m / s and a temperature of 60°C The airflow prepares the atomized solution and the fine powder medicine into granular medicine, and obtains the medicine product after drying.

[0025] The pyrotechnic agent prepared by the method has uniform particles, good fluidity and no dust. The discharge effect of the fireworks and firecrackers pro...

Embodiment 3

[0027] The formula of the pyrotechnic agent used is:

[0028]

[0029] (1) Weigh 1kg, 1kg, 1kg, 2.5kg and 2.5kg of fine powdered sulfur powder, aluminum powder, magnesium-aluminum alloy powder, potassium perchlorate and barium nitrate respectively, and use a speed of 1.5 in the boiling granulator The m / s airflow was mixed for 5 minutes.

[0030] (2) 0.15kg of fine powdery cooked glutinous rice flour is made into an aqueous solution with a mass fraction of 4%.

[0031] (3) Atomize the solution prepared in (2) at a rate of 150ml / min under a pressure of 0.3MPa and spray it into the boiling granulator in (1), while using a speed of 2m / s and a temperature of 60°C The airflow prepares the atomized solution and the fine powder medicine into granular medicine, and obtains the medicine product after drying.

[0032] The pyrotechnic agent prepared by the process has uniform particles, good fluidity and no dust. When the fireworks and firecrackers produced by the prepared granule a...

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Abstract

The invention relates to a method for preparing a firework composition by a boiling granulation process, and belongs to the technical field of fireworks and firecrackers. The method comprises: putting raw materials weighed according to a firework composition proportion into a closed container, mixing well the raw materials through a gas flow with a speed of 1 to 2 m / s, atomizing a binder solution, injecting the atomized binder solution into the closed container, processing the atomized binder solution and the raw materials into a granular composition through a gas flow with a speed rate of 1 to 2 m / s and a temperature of room temperature to 60 DEG C, and drying the granular composition to obtain firework composition products. Through adopting a boiling granulation process, the method realizes a man-machine separation and can produce firework composition products with the advantages of uniform particles, good flowability and no dust. Firework and firecracker products produced from the firework composition prepared by the method have a stable burning performance.

Description

technical field [0001] The invention relates to a method for preparing a pyrotechnic agent using boiling granulation, which belongs to the field of fireworks and firecrackers. Background technique [0002] In the production process of pyrotechnics and pyrotechnic agents, in order to improve the fluidity of the agent and reduce the dust in the process of screening and charging the agent, it is necessary to granulate the agent. The traditional granulation method is to mix the fine powder of raw materials by manual sieving and mixing, then add a binder, then use forced sieving to complete the granulation, and finally dry it in an oven. This process is organized by combining manual operation with partial mechanization. The process is outdated and the equipment is simple. In some drug-related processes, the operator is directly exposed to flammable and explosive pyrotechnic agents, and there is no effective communication between the working surface and the operator. Isolation, e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B33/14
Inventor 黄平刘海营钱新明刘振翼
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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