The formation mechanism of foamed gel with fly ash
A new type of technology of foamed gel with fly ash is developed to prevent and extinguish fire so as to overcome the existing shortages of fire prevention technologies.As a complex multi-component foam system, foamed gel with fly ash is mainly formed by putting foaming agent, thickener and crosslinker into fly ash slurry, introducing nitrogen and stirring physically and mechanically.By use of ZOOM645S stereo microscope, the experiments were done to investigate the microstructure of foamed gel with fly ash and theoretically analyze its gelation process and mechanism.Moreover, NDJ-5s digital viscometer is also adopted to research the apparent viscosity.It can be known from the results that the gelation time can be controlled (10~20 min) under static conditions.The application of foamed gel with fly ash in Xinjin No.2 Coal Mine is further studied.The results show that the effect of foamed gel with fly ash, a new technology with wide application prospect in mine fire control, on preventing spontaneous combustion of coal in goaf is remarkable.
spontaneous combustion of coal foamed gel with fly ash gelation field application
ZHANG Lei-lin QIN Bo-tao
School of Mining and Safety Engineering, Anhui University of Science & Technology, Huainan 232001, C School of Safety Engineering, China University of Mining & Technology, Xuzhou 221116, China
国际会议
International Mining Conference 2014(2014国际采矿论坛)
安徽淮南
英文
569-575
2014-09-19(万方平台首次上网日期,不代表论文的发表时间)