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在所有的浮选机里,空气被矿浆的紊流、撞击固体零件和飞溅的方式所分散。由出现的压力降引起气体从溶液中析出。本文为此阐述了在近壁层中固体表面的法线方向上利用小范围激烈波动的初步结果。根据紊流中液体分散作用的一般理论和试验结果指出:近壁层中液体的乳化作用是十分有效的。紊流对气泡的流体动力学作用,当外界的惯性力(紊流波动的结果)与表面张力达到平衡时引起气泡分裂。
In all flotation machines, the air is dispersed by the turbulence of the pulp, the impact of solid parts and splashing. Gas is caused to precipitate from the solution by the pressure drop that occurs. This paper illustrates the preliminary results of using small-scale intense fluctuations in the normal direction of the solid surface in the near-wall layer. According to the general theory and experimental results of liquid dispersion in turbulent flow, it is pointed out that the emulsification of liquid in the near wall is very effective. The hydrodynamic effect of turbulence on the bubble causes the bubble to split when the outside world’s inertial force (the result of turbulent flow fluctuations) equilibrates with the surface tension.