The three-phase contact parameters of thin water films on mineral surfaces

被引：4

作者：

Alexandrova, L

Grigorov, L ^{[1
]}

机构：

[1] Univ Sofia, Fac Chem, BU-1126 Sofia, Bulgaria

[2] Bulgarian Acad Sci, Inst Biophys, BU-1113 Sofia, Bulgaria

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 1998年 / 131卷 / 1-3期

关键词：

surfactant; wettability; three-phase contact; contact angle; flotation;

D O I：

10.1016/S0927-7757(97)00162-3

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A new method for the characterization of the wettability of opaque solid surfaces by measuring (a) the lifetime of thin liquid films, (b) the kinetics of expansion of the three-phase contact (TPC), (c) the equilibrium contact angle is developed. The method is tested with galena-xanthate and copper mineral-pyrite-Aerodri 104 systems. The experimental results from TPC parameter measurements of galena and flotation tests indicate the important role of the TPC expansion rate in flotation. The effect of Aerodri 104 on three-phase froth stability is investigated. It is found that the breakdown of the three-phase froth can be correlated directly with the equilibrium contact angle. (C) 1998 Elsevier Science B.V.

引用

页码：265 / 269

页数：5