Dry powder extinguishing agent and method for preparing dry powder extinguishing agent from ammonium dihydrogen phosphate

Abstract

The invention discloses a dry powder extinguishing agent and a method for preparing the dry powder extinguishing agent from ammonium dihydrogen phosphate. The dry powder extinguishing agent is prepared from the following components in percentage by mass: 37.3%-75.4% of ammonium dihydrogen phosphate, 15.0%-40.0% of ammonium sulfate, 1.5%-2.5% of raw white carbon black, 1.5%-2.5% of mica, 1.5%-3.0% of active hargil, 3.7%-41.8% of silicon dioxide and 1.4%-2.0% of emulsified silicone oil. Compared with the prior art, the dry powder extinguishing agent disclosed by the invention has the advantages that the raw white carbon black is used for replacing lyophobic white carbon black so that the cost of the dry powder extinguishing agent can be reduced; the raw white carbon black does not need to be independently silicified and a technological process is simplified; the manual cost and the energy source consumption are reduced; silicon dioxide is used as an auxiliary medium and calcium carbonate does not exist, so that a caking phenomenon of a dry powder agent is avoided; and the dry powder extinguishing agent disclosed by the invention has good mobility and good extinguishing effect.

Description

technical field [0001] The invention relates to the field of fire extinguishing agents, in particular to a dry powder fire extinguishing agent and a preparation method thereof. Background technique [0002] Ammonium phosphate dry powder fire extinguishing agent is mainly used to put out A, B, C, E class fires, and the ammonium phosphate dry powder fire extinguishing agent in the prior art has the following problems and shortcomings: [0003] 1. Hydrophobic silica is incorporated into the formula for production, and the market price of hydrophobic silica is 6500.00 RMB / ton, which is relatively high cost; [0004] 2. Raw white carbon black is silicified separately and then merged into formula production. The raw white carbon black is 3300.00 yuan / ton, and the purchase cost is low, but the usage is increased, the energy consumption of siliconized alone is high, and the labor intensity is high; [0005] 3. The traditional emulsified silicone oil is mixed with silicone oil and g...

AI Technical Summary

Problems solved by technology

[0003] 1. Hydrophobic silica is incorporated into the formula for production, and the market price of hydrophobic silica is 6500.00 RMB / ton, which is relatively high cost;

[0004] 2. Raw white carbon black is silicified separately and then merged into formula production. The raw white carbon black is 3300.00 yuan / ton, and the purchase cost is low, but the usage is increased, the energy consumption of siliconized alone is high, and the labor intensity is high;

[0005] 3. The traditional emulsified silicone oil is mixed with silicone oil and gasoline, which has high cost, strong gasoline smell and low safety factor;

[0006] 4. Traditional excipients use calcium carbonate or talcum powder containing calcium carbonate, which is prone to chemical reactions with ammonium dihydrogen phosphate, resulting in agglomeration of dry powder medicines

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