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依据分子结构理论，从煤表面的有机分子组成和疏水性间的关系分析了煤的理论可浮性。通过利用不同煤阶煤的基本分子结构单元的量子化学计算结果及煤的电泳实测数据说明了煤表面的负电性。并根据不同极性基团的表面活性剂与煤表面作用的Ｚｅｔａ电位和红外光谱数据讨论了它们的吸附性质。最后讨论了依据上述理论研制的煤浮选促进剂在煤浮选时的作用机理。
According to the molecular structure theory, the theoretical floatability of coal was analyzed from the relationship between the organic molecular composition and the hydrophobicity of coal surface. The negative charge of the coal surface is demonstrated by using the quantum chemical calculation results of the basic molecular structural units of different rank coal and the electrophoretic data of the coal. Their adsorption properties were discussed based on the Zeta potential and infrared spectra of surfactants with different polar groups and coal surface. Finally, the mechanism of coal flotation promoter developed based on the above theory is discussed.