Surface Spectroscopic Studies of Factors Influencing Xanthate Adsorption on Coal Pyrite Surfaces†

✍ Scribed by Baltrus, John P.; Rodney Diehl, J.

• Publisher: John Wiley and Sons
• Year: 1997
• Tongue: English
• Weight: 227 KB
• Volume: 25
• Category: Article
• ISSN: 0142-2421
• DOI: 10.1002/(sici)1096-9918(199702)25:2<64::aid-sia203>3.0.co;2-9

✦ Synopsis

The relative adsorption of Ñuoroxanthates on several di †erent coal pyrites has been found to depend on the degree to which the pyrite surfaces are oxidized. Maximum xanthate adsorption occurs in the absence of pyrite surface oxidation and is a †ected by the presence of polysulÐdes and metal-deÐcient sulÐdes on the pyrite surface. The structure and electronic properties of the xanthate molecule may also a †ect its adsorption. 3-(TriÑuoromethyl)benzyl xanthate was found to selectively adsorb on pyrite vs. coal surfaces. Secondary ion mass spectrometry is a viable alternative to x-ray photoelectron spectroscopy for detecting xanthate adsorption. 1997