US 11,931,614 B2
Fire-extinguishing agent capable of extinguishing combustion of aluminum slag, and preparation method therefor and use thereof
Haijun Yu, Guangdong (CN); Yingsheng Zhong, Guangdong (CN); Yinghao Xie, Guangdong (CN); Changdong Li, Guangdong (CN); and Xuemei Zhang, Guangdong (CN)
Assigned to GUANGDONG BRUNP RECYCLING TECHNOLOGY CO., LTD., Guangdong (CN); HUNAN BRUNP RECYCLING TECHNOLOGY CO., LTD., Hunan (CN); and HUNAN BRUNP VEHICLES RECYCLING CO., LTD., Hunan (CN)
Appl. No. 18/265,374
Filed by GUANGDONG BRUNP RECYCLING TECHNOLOGY CO., LTD., Guangdong (CN); HUNAN BRUNP RECYCLING TECHNOLOGY CO., LTD., Hunan (CN); and HUNAN BRUNP VEHICLES RECYCLING CO., LTD., Hunan (CN)
PCT Filed Dec. 30, 2021, PCT No. PCT/CN2021/142930
§ 371(c)(1), (2) Date Jun. 5, 2023,
PCT Pub. No. WO2022/252601, PCT Pub. Date Dec. 8, 2022.
Claims priority of application No. 202110601149.5 (CN), filed on May 31, 2021.
Prior Publication US 2024/0033554 A1, Feb. 1, 2024
Int. Cl. A62D 1/00 (2006.01)
CPC A62D 1/0014 (2013.01) [A62D 1/0007 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A fire extinguishing agent capable of extinguishing aluminum slag combustion, comprising the following raw materials: sulfate, chloride salt, a mineral, silica gel, a surfactant and stearate, wherein the fire extinguishing agent capable of extinguishing aluminum slag combustion is prepared by a preparation method comprising the following steps:
(1) calcinating solid waste containing sulfate and chloride salt, dissolving by adding water, performing filtration to obtain a filtrate, and performing evaporation and crystallization to obtain crystals:
(2) adding the crystals to liquid nitrogen for soaking and mixing the soaked crystals with the mineral and silica gel to prepare a powder, and
(3) mixing the powder, surfactant and stearate and drying an obtained mixture to obtain the fire extinguishing agent capable of extinguishing aluminum slag combustion;
wherein, the sulfate is sodium sulfate and calcium sulfate; the chloride salt is sodium chloride and calcium chloride; the surfactant is polydimethylsiloxane; the stearate is one of sodium stearate, magnesium stearate, calcium stearate and zinc stearate; the mineral is at least one of quartz sand, quartzite, silica and opal; the mass ratio of the powder, surfactant and stearate is 100:(1-5):(0.05-0.25); the mass ratio of the sodium sulfate, sodium chloride, calcium sulfate and calcium chloride is (50-80):(20-40):(2-10):(1-10); and wherein in step (2), the mass ratio of the crystals to the liquid nitrogen is 10:(1-3); and in step (2), the mass ratio of the crystals, the mineral and the silica gel is 100:(1-5):(1-2).