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降温性
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Three-phase foam was proposed to prevent the spontaneous combustion of coal. It is composed of fly ash or mud, nitrogen and water and formed by physical mixture. It makes use of the all-around capability of solid, liquid and gas states to prevent mine fire. In other words, the fly ash or mud can cover the combustible, the nitrogen can asphyxiate it and the water can cool it. The optimal complex foaming agent and its match were found according to the experiments about the foam properties of the four selected...

Three-phase foam was proposed to prevent the spontaneous combustion of coal. It is composed of fly ash or mud, nitrogen and water and formed by physical mixture. It makes use of the all-around capability of solid, liquid and gas states to prevent mine fire. In other words, the fly ash or mud can cover the combustible, the nitrogen can asphyxiate it and the water can cool it. The optimal complex foaming agent and its match were found according to the experiments about the foam properties of the four selected foaming agents and their complex. Synchronously, interrelated experiments on the three-phase foam which was influenced by the mass fraction of foaming agent, soluble glass and slurry were done. The results show that the properties of the three-phase foam are the best when the mass fraction of foaming agent, soluble glass and slurry are 0.2%, 2% and 20% (fly ash and water is 1:4) respectively. And the high-quality three-phase foam was formed through the established lab system.

提出了用三相泡沫来防治煤炭的自燃.由粉煤灰或黄泥、氮气和水通过物理机械方式形成的防灭火三相泡沫,具有集固、液、气三相材料的防灭火性能于一体,充分利用粉煤灰或黄泥的覆盖性、氮气的窒息性和水的吸热降温性进行防灭火的特性.通过对优选的4种发泡剂及相互复配对泡沫性能的实验研究,得出了最优的复配发泡剂及配比.同时研究了发泡剂质量分数、水玻璃质量分数及浆液质量分数对制备高性能三相泡沫的影响.结果表明,当发泡剂质量分数为0.2%,水玻璃质量分数为2%,灰水质量比为1∶4时,制得的防灭火三相泡沫的性能最好.并在实验室构建的三相泡沫实验系统上制备出了高性能的防灭火三相泡沫.

 
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