Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Development and performance study of a novel physicochemical composite inhibitor for the prevention of coal gangue spontaneous combustion
To overcome the short inhibition life of currently available inhibitors, a high polymer nanocomposite inhibitor was developed. The spontaneous combustion characteristics of coal gangue from the Yangquan mining area were studied through proximate analysis, scanning electron microscope/energy dispersive spectrometer (SEM/EDS), and thermogravimetric analysis. As a result, the coal gangue was found to be prone to spontaneous combustion. Temperature‐programmed oxidation experiments showed that the average inhibition rates of Ca (OH)2 or polyacrylamide (PAM) were 30.99% and 30.95%, respectively. During testing, when the temperature of the coal gangue exceeded 160°C, the CO production and oxygen consumption rate of the sample with PAM increased dramatically, proving that the PAM inhibition effect was short‐lived with elevating temperature, whereas the inhibition rate of polyacrylamide/montmorillonite (PAM/MMT) was significantly increased to 47.70%. In addition, the CO production and oxygen consumption rates were significantly reduced in the late oxidation period, proving that the addition of MMT was able to effectively improve the high‐temperature resistance of the PAM. Different concentrations of PAM/MMT were compounded with Ca (OH)2, further improving the inhibition effect of the treatment. The inhibition effect of the PAM/MMT 3%‐Ca (OH)2 20% composite inhibitor was the best in the study, with an inhibition rate of 83.15%.
Development and performance study of a novel physicochemical composite inhibitor for the prevention of coal gangue spontaneous combustion
To overcome the short inhibition life of currently available inhibitors, a high polymer nanocomposite inhibitor was developed. The spontaneous combustion characteristics of coal gangue from the Yangquan mining area were studied through proximate analysis, scanning electron microscope/energy dispersive spectrometer (SEM/EDS), and thermogravimetric analysis. As a result, the coal gangue was found to be prone to spontaneous combustion. Temperature‐programmed oxidation experiments showed that the average inhibition rates of Ca (OH)2 or polyacrylamide (PAM) were 30.99% and 30.95%, respectively. During testing, when the temperature of the coal gangue exceeded 160°C, the CO production and oxygen consumption rate of the sample with PAM increased dramatically, proving that the PAM inhibition effect was short‐lived with elevating temperature, whereas the inhibition rate of polyacrylamide/montmorillonite (PAM/MMT) was significantly increased to 47.70%. In addition, the CO production and oxygen consumption rates were significantly reduced in the late oxidation period, proving that the addition of MMT was able to effectively improve the high‐temperature resistance of the PAM. Different concentrations of PAM/MMT were compounded with Ca (OH)2, further improving the inhibition effect of the treatment. The inhibition effect of the PAM/MMT 3%‐Ca (OH)2 20% composite inhibitor was the best in the study, with an inhibition rate of 83.15%.
Development and performance study of a novel physicochemical composite inhibitor for the prevention of coal gangue spontaneous combustion
Huang, Zhian (Autor:in) / Le, Tian (Autor:in) / Zhang, Yinghua (Autor:in) / Gao, Yukun (Autor:in) / Li, Jinyang (Autor:in) / Li, Ziyou (Autor:in) / Ma, Zhenzhen (Autor:in)
Fire and Materials ; 44 ; 76-89
01.01.2020
14 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Deutsch
Greening method for spontaneous combustion coal gangue mountain
| Europäisches Patentamt | 2023
Preparation method of coal slime-spontaneous combustion coal gangue ceramsite
| Europäisches Patentamt | 2022
Ecological restoration method for spontaneous combustion coal gangue mountain
| Europäisches Patentamt | 2023
Spontaneous-combustion coal gangue brick and production process thereof
| Europäisches Patentamt | 2015