An Experimental Study on Wetting of Coal Dust by Surfactant Solution

• DOI: 10.1155/2020/1567461
• Publication Date: 2020-03-31T23:37:30Z
• Authors: Yidan Jiang; Pengfei Wang; Ronghua Liu; Ye Pei; Gaogao Wu
• Keywords: Coal dust

Surfactants can improve the wetting performance of dust‐reduction spraying water, thus improving effect by spray. In this study, surfactant solution in coal dust was investigated through experiments. addition, effects type, mass fraction, metamorphic degree coal, particle size, and additives were investigated. According to results surface tension experiments, decreased with increase concentration surfactant. However, after reaching CMC, did not have significantly decrease. SDBS OP‐10 had higher efficiency decreasing than other two types surfactants. The addition sodium sulfate further reduce a limited range. experiment showed that surfactant, contact angle droplets on tablet continuously reduced, wettability improved. optimal. At same concentration, minimum be obtained solution. As increased, growth rate reverse osmosis moisture absorption relative pure water increased. After sulfate, increased varying degrees. as