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A kind of D type dry powder fire extinguishing agent and preparation method thereof

A technology of dry powder fire extinguishing agent and weight percentage, which is applied in the direction of fire prevention equipment, etc., can solve the problems of inability to extinguish metal fires, the high price of imported dry powder, and the inability to achieve the purpose of fire extinguishing, and achieve low price, good compactness, and fast fire extinguishing speed Effect

Active Publication Date: 2016-07-06
JIANGXI JIN XIAN FIRE CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Class D fires refer to metal fires, usually potassium, sodium, magnesium, lithium and aluminum-magnesium alloy fires. With the development of modern industry and the wide application of various metals in various industries, metal fires occur from time to time, because these metals are very active. Strong, at room temperature, it is easy to react violently with oxygen and nitrogen in the air, and release a lot of heat. It is easy to spontaneously ignite and explode. Water and CO2 cannot achieve the purpose of fire extinguishing, but will increase the degree of reaction and make the fire bigger. Dry powder fire extinguishing agents can not achieve the purpose of extinguishing metal fires. At present, imported D-type dry powder is usually used to extinguish fires in China. The price of imported dry powder is very expensive. Therefore, research on D-type dry powder fire extinguishing agents has become an imperative task for my country's fire protection industry.

Method used

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  • A kind of D type dry powder fire extinguishing agent and preparation method thereof
  • A kind of D type dry powder fire extinguishing agent and preparation method thereof
  • A kind of D type dry powder fire extinguishing agent and preparation method thereof

Examples

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Effect test

Embodiment 1

[0022] A kind of preparation method of class D dry powder fire extinguishing agent comprises the following steps:

[0023] 1) Add 48% by weight of sodium chloride and 32% by weight of potassium chloride into the mixing pot, stir for 10 minutes, then add 1% by weight of high-boiling silicone oil by spraying, stir evenly, and heat at 100°C Heating at constant temperature until the water content of the mixture is lower than 0.2%, stopping heating and cooling to normal temperature to obtain product A;

[0024] 2) The product A is pulverized by a ring roller mill until more than 80% of the particles have a particle size of 15-40 microns to obtain the product B;

[0025] 3) Add 3% clay by weight, 4% mica by weight, 6% boron nitride by weight and the product B into the reaction vessel, heat up and stir, when the temperature of the mixture rises to 55°C , add 2% by weight of high-boiling silicone oil, stir evenly, then add 4% by weight of white carbon black, heat at a constant temper...

Embodiment 2

[0027] A kind of preparation method of class D dry powder fire extinguishing agent comprises the following steps:

[0028] 1) Add 50% by weight of sodium chloride and 30% by weight of potassium chloride into the mixing pot, stir for 8 minutes, then add 1% by weight of high-boiling silicone oil by spraying, stir evenly, and heat at 110°C Heating at constant temperature until the water content of the mixture is lower than 0.2%, stopping heating and cooling to normal temperature to obtain product A;

[0029] 2) The product A is pulverized by a ring roller mill until more than 80% of the particles have a particle size of 15-40 microns to obtain the product B;

[0030] 3) Add 4% white clay by weight, 6% mica by weight, 5% boron nitride by weight and the product B into the reaction vessel, heat up and stir, when the mixture is heated up to 55°C , add 1% by weight of high-boiling silicone oil, stir evenly, then add 3% by weight of white carbon black, heat at a constant temperature a...

Embodiment 3

[0032] A kind of preparation method of class D dry powder fire extinguishing agent comprises the following steps:

[0033] 1) Add 45% by weight of sodium chloride and 35% by weight of potassium chloride into the mixing pot, stir for 15 minutes, then add 2% by weight of high-boiling silicone oil by spraying, stir evenly, and heat at 85°C Heating at constant temperature until the water content of the mixture is lower than 0.2%, stopping heating and cooling to normal temperature to obtain product A;

[0034] 2) The product A is pulverized by a ring roller mill until more than 80% of the particles have a particle size of 15-40 microns to obtain the product B;

[0035] 3) Add 2% clay by weight, 3% mica by weight, 6% boron nitride by weight and the product B into the reaction vessel, heat up and stir, when the mixture is heated up to 55°C , add 2% by weight of high-boiling silicone oil, stir evenly, then add 5% by weight of white carbon black, heat at a constant temperature of 85°C...

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PUM

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Abstract

The invention discloses a class D dry powder fire extinguishing agent and a preparation method thereof, which comprises the following components in terms of weight percentage: 45-50% of sodium chloride, 30-35% of potassium chloride, 2-4% of white clay, and 4-4% of mica 6%, boron nitride 5-8%, white carbon black 4-5%, high-boiling silicone oil 2-5%. The fire extinguishing speed of the product of the present invention is fast, the general fire extinguishing time is more than 3 minutes, and the present invention only needs 1.5-2.5 minutes; the compactness performance is good, the chemical properties of the metal derivatives generated after fire extinguishing are stable, and it is not easy to recombust; the heat dissipation is good, the temperature is cooled quickly, and the price is low .

Description

technical field [0001] The invention relates to the field of powder fire extinguishing agents, in particular to a Class D dry powder fire extinguishing agent and a preparation method thereof. Background technique [0002] Class D fires refer to metal fires, usually potassium, sodium, magnesium, lithium and aluminum-magnesium alloy fires. With the development of modern industry and the wide application of various metals in various industries, metal fires occur from time to time, because these metals are very active. Strong, at room temperature, it is easy to react violently with oxygen and nitrogen in the air, and release a lot of heat. It is easy to spontaneously ignite and explode. Water and CO2 cannot achieve the purpose of fire extinguishing, but will increase the degree of reaction and make the fire bigger. Dry powder fire extinguishing agents can’t achieve the purpose of extinguishing metal fires. At present, imported Class D dry powder is usually used to extinguish fires...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A62D1/00
Inventor 易小明
Owner JIANGXI JIN XIAN FIRE CHEM IND