64.フィルム浮選法を用いたカラム浮選結果の評価

抄録

Datong and Illinois coal as examples of coal having high and low flotabilities, respectively, were used to study flotability. A film flotation which can be used for evaluating the critical wetting surface tension (γ_c) of each coal particle was performed. When the flotability of coal particles having the same value of γ_c was compared between Datong and Illinois coal, the flotability of Datong coal was greater than that of Illinois coal. It was, hence, suggested that heterogeneous distribution of hydrophobic strength on a surface of each coal particle should be taken into account to understand the attachment of a coal particle and a bubble.