CLASSIFICATION OF MINERALS ACCORDING TO THEIR CRITICAL SURFACE-TENSION OF WETTING VALUES


OZCAN O.

INTERNATIONAL JOURNAL OF MINERAL PROCESSING, vol.34, no.3, pp.191-204, 1992 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 34 Issue: 3
  • Publication Date: 1992
  • Doi Number: 10.1016/0301-7516(92)90073-6
  • Title of Journal : INTERNATIONAL JOURNAL OF MINERAL PROCESSING
  • Page Numbers: pp.191-204

Abstract

Minerals are classified into three groups according to their critical surface tension of wetting (gamma-c) values measured in methanol/water system: 1. Naturally hydrophobic minerals with gamma-c values between 26 and 35 dyn/cm (talc, sulfur, graphite, molybdenite, orpiment, realgar) which can be easily floated without using any collector 2. Partially hydrophobic minerals with gamma-c values between 35 and 49 dyn/cm (galena, sphalerite, chalcocite, chalcopyrite, stibnite). 3. Hydrophilic minerals with gamma-c values about 72 dyn/cm, these cannot be floated without first decreasing their gamma-c values to 26-35 dyn/cm by surface treatment.