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Metal fire extinguishing agent and preparation method thereof

A kind of fire extinguishing agent and metal technology, applied in the direction of fire prevention equipment, etc., can solve the problems of easy explosion, flammability, burning, etc., and achieve the effects of relieving burning, excellent heat insulation, and slowing down decomposition

Inactive Publication Date: 2021-06-25
EASTEX XIAMEN FIRETEC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Class D fire refers to the fire caused by the combustion of combustible metals. Taking metal magnesium as an example, metal magnesium is a dangerous substance that is flammable and explosive. It is easy to explode when exposed to water. It is flammable and produces strong white light and high heat when burning. It reacts violently with water or moisture and releases hydrogen gas, which releases a large amount of heat, causing combustion or explosion. It reacts violently with chlorine, bromine, iodine, sulfur, arsenic and oxidants, causing the danger of combustion and explosion. The powder and air can form explosive mixtures. Therefore, water-based fire extinguishing agents in the prior art cannot be used to extinguish metal fires. How to extinguish the fires caused by metal magnesium more efficiently and safely is an urgent problem to be solved.

Method used

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preparation example Construction

[0020] The present invention also relates to a preparation method of metal fire extinguishing agent, comprising the following steps:

[0021] Step 1: uniformly mix 60-70 parts of wood flour, 20-30 parts of surfactant F127, 20-30 parts of silica particles and 20-30 parts of kaolin to obtain the first mixture;

[0022] Step 2: Add 15-20 parts of talcum powder and 20-30 parts of ammonium dihydrogen phosphate to the first mixture, and perform secondary mixing to obtain the second mixture;

[0023] Step 3: fully dry the second mixture, then add 3-5 parts of boric acid, and mix evenly to obtain a metal fire extinguishing agent.

[0024] Further, in the preparation method of the above-mentioned metal fire extinguishing agent, the step 1 is specifically: mixing 60-70 parts of wood flour, 20-30 parts of surfactant F127, 20-30 parts of silica particles and 20-30 parts of kaolin in Mix uniformly in the pressure airflow of 0.6-0.8MPa to obtain the first mixed material.

[0025] Further,...

Embodiment 1

[0028] A preparation method of metal fire extinguishing agent, comprising the following steps:

[0029] Step 1: Mix 65kg pine wood powder, 25kg surfactant F127, 25kg silicon dioxide granules and 25kg kaolin in a pressure airflow of 0.7MPa to obtain the first mixture;

[0030] Step 2: Add 17kg of talcum powder and 25kg of ammonium dihydrogen phosphate to the first mixture respectively, and carry out secondary mixing in the pressure airflow of 0.7MPa to obtain the second mixture;

[0031] Step 3: Heat the second mixture in a vacuum drying oven at 175° C. for 1 hour, then add 4 kg of boric acid, and mix evenly in a pressure airflow of 0.7 MPa to obtain a metal fire extinguishing agent.

[0032] The particle size of each raw material of the metal fire extinguishing agent is less than 900nm.

Embodiment 2

[0034] A preparation method of metal fire extinguishing agent, comprising the following steps:

[0035] Step 1: Mix 60kg of fir wood powder, 20kg of surfactant F127, 20kg of silica particles and 20kg of kaolin in a pressure airflow of 0.6MPa to obtain the first mixture;

[0036] Step 2: Add 15kg of talcum powder and 20kg of ammonium dihydrogen phosphate to the first mixture respectively, and carry out secondary mixing in the pressure airflow of 0.6MPa to obtain the second mixture;

[0037] Step 3: Heat the second mixture in a vacuum drying oven at 170° C. for 1 hour, then add 3 kg of boric acid, and mix evenly in a pressure airflow of 0.6 MPa to obtain a metal fire extinguishing agent.

[0038] The particle size of each raw material of the metal fire extinguishing agent is less than 900nm.

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Abstract

The invention relates to the technical field of fire extinguishing agent formulas, in particular to a metal fire extinguishing agent and a preparation method thereof. The specific amount of wood flour, ammonium dihydrogen phosphate and boric acid are added into the formula, during fire extinguishing, the wood flour covers the surface of burning metal and is rapidly ignited when meeting fire, and a carbon layer is formed to cover the surface of the metal, so that combustion of the metal is relieved, By adding ammonium dihydrogen phosphate and boric acid, carbonization of the wood flour can be promoted, the purpose of more efficient fire extinguishing is achieved, B2O3 decomposed from boric acid after combustion has excellent heat insulation and mass insulation effects, decomposition of a carbon layer can be slowed down, and therefore fire extinguishing of metal is more efficient and stable.

Description

technical field [0001] The invention relates to the technical field of fire extinguishing agent formulations, in particular to a metal fire extinguishing agent and a preparation method thereof. Background technique [0002] Class D fire refers to the fire caused by the combustion of combustible metals. Taking metal magnesium as an example, metal magnesium is a dangerous substance that is flammable and explosive. It is easy to explode when exposed to water. It is flammable and produces strong white light and high heat when burning. It reacts violently with water or moisture and releases hydrogen gas, which releases a large amount of heat, causing combustion or explosion. It reacts violently with chlorine, bromine, iodine, sulfur, arsenic and oxidants, causing the danger of combustion and explosion. The powder and air can form explosive mixtures. Therefore, water-based fire extinguishing agents in the prior art cannot be used to extinguish metal fires. How to extinguish the fi...

Claims

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Application Information

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IPC IPC(8): A62D1/00
CPCA62D1/0014
Inventor 李江东尤昌洪
Owner EASTEX XIAMEN FIRETEC