Study on wetting effect of multi-component surfactant compounding on bituminous coal

Abstract

Surfactant is a substance that is soluble in water and can significantly reduce the surface tension of the solution, which can effectively solve the problem of dust hazards in the underground mining work of coal mines. In order to study the influence of multi-component surfactant compounding on the wetting effect of bituminous coal, the bituminous coal of Huainan Pansan Coal Mine is used as the research object, firstly, surface tension and settling time are taken as the investigation indicators. The anionic surfactant Rapid Panetrant T, the zwitterionic surfactant BS-12, and the nonionic surfactant APG are selected from the eight surfactants. Secondly, by comparing the surface tension and settling time, anionic surfactant Rapid Panetrant T effect is the best. At the same time, molecular simulation technology is used to investigate the electrostatic potential distribution of the three monomer reagents, and the effect of the anionic surfactant Rapid Panetrant T is the best. Finally, orthogonal experiment method was used to obtain the optimal formulations of the three reagent monomers with the concentration of 0.20%, 0.15%, 0.25%, respectively, and the surface tension is 16.95 mN/m, which is 17.81% higher than that of Rapid Panetrant T, and the settling time is 20.95 s, which is 20.34% higher than that of Rapid Panetrant T.

Keywords

• surfactant
• dust suppression agent
• settling time
• surface tension
• electrostatic potential
• orthogonal experiment