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| Preparation and performance analysis of composite environmental protection dust suppressant for mining |
| Zuo Anjia, Sun Jihong, Wei Chao, Chen Jianglong |
| College of Safety Engineering, North China Institute of Science and Technology, Langfang 065201, China |
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Abstract As one of the main energy sources in China, coal plays an important role in economic development. The problems of occupational health and environmental pollution caused by coal dust are of great concern. In response to the problems of high cost and pollution of existing dust suppressants, a low-cost, green and high performance coal dust suppressant was prepared by graft copolymerization using sodium carboxymethyl cellulose and starch as raw materials, ammonium persulfate as initiator and N,N'methylenebisacrylamide as crosslinker. The reaction principle of the product was illustrated by infrared spectroscopy experiment, its thermal stability was tested by thermogravimetric experiment, its surface structure was observed by scanning electron microscopy experiment, its water absorption property was tested by water absorption experiment, its wetting property was tested by contact angle experiment, and its ability to fix dust was tested by viscosity experiment. The results showed that the dust suppressant had excellent performance and good dust suppression effect.
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