The effect of pressure-based pre-treat on the flotation efficiency of coal slurry
Abstract：By exhausting and inflating air,the sub-pressure and pressurized coal slurry samples were respectively prepared.The flotation experiments were respectively carried out using the two samples under normal atmosphere.Additionally,the zeta potential of coal particle was measured.The experimental results show that：for the sub-pressure coal slurry,all of the absolute value of zeta potential,clean coal yield,and flotation perfection index decrease;for the pressurized coal slurry,on the contrary,the three values all increase.The influence of coring gas bubbles on the flotation was analyzed.The Stern model of double electric layer characterizing coal particles with the coring bubbles was described.The correctness of the model is verified.
Keywords：pressurepre-treatflotationcoring bubblezeta potential
Publication Date：2011-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)