标题：Solidifying dust suppressant based on modified chitosan and experimental study on its dust suppression performance
作者：Liu, Yanghao; Nie, Wen; Jin, Hu; Ma, He; Hua, Yun; Cai, Peng; Wei, Wenle
作者机构：[Liu, Yanghao; Nie, Wen; Jin, Hu; Ma, He; Hua, Yun; Cai, Peng; Wei, Wenle] Shandong Univ Sci & Technol, Qingdao, Peoples R China.; [Liu, Yanghao; Ni 更多
通讯作者地址：[Nie, W]Shandong Univ Sci & Technol, Coll Min & Safety Engn, Qingdao 266590, Peoples R China.
来源：ADSORPTION SCIENCE & TECHNOLOGY
关键词：Solidifying dust suppressant; chitosan modification; Fourier transform; infrared spectroscopy; viscosity test; scanning electron microscope;; wind erosion resistance test
摘要：In view of the fugitive dusts caused by wind disturbance and material handling in coal bunkers, surface plants, and open-air coal stocking yards of coal businesses, the solidifying dust suppressant based on modified chitosan is synthesized and prepared through the chemical modification of -NH2 with chitosan as a raw material and -NH2 was replaced by -(CHCH)-C-2(OH)CH2N+(CH3)CI- through the technique of Fourier transform infrared spectroscopy. According to viscosity experiment results, the viscosity of the modified solidifying dust suppressant increased significantly. The coal particles suppressed by the dust suppressant as observed with a 50,000X scanning electron microscope were coagulated together, which indicated very good cohesion effect. In addition, wind erosion resistance experiment was conducted to analyze the wind erosion rate of coal powders before and after sprayed with the suppressant at different wind speeds, which indicated that the dust suppressant can effectively prevent fugitive dusts at a wind speed of 17 m/s.