Contact Angle Studies of Ethyl Xanthate Coated Galena Particles

✍ Scribed by Clive A. Prestidge; John Ralston

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 144 KB
• Volume: 184
• Category: Article
• ISSN: 0021-9797
• DOI: 10.1006/jcis.1996.0646

✦ Synopsis

20 monolayers were required for the same contact angle The wettability of ethyl xanthate coated galena particles has changes. Gaudin and Preller (1) reported that hydrophobic been determined from measurements of the equilibrium capillary surfaces, with a water advancing contact angle greater than pressure across a packed bed. Both the advancing liquid powder 90Њ, are generated at less than a monolayer of xanthate covercontact angle, u p , and the specific wettable surface area, A wet , of age, an observation which agreed with the voltammetric galena particles have been obtained. The influence of particle size studies of Gardner and Woods (7), who suggested that less and ethyl xanthate surface coverage on the powder contact angle than a monolayer of xanthate is required to float galena. have been investigated and compared with floatability. Ethyl xan-Granville et al. (5) reviewed the earlier studies on the hydrothate at a surface coverage of less than ten percent of an equivalent phobicity of galena surfaces and concluded that ''although monolayer significantly increases both u p and particle floatability.