Gold leaching by use of an N,N '-disubstituted thiourea


Aydin A. A. , KAKI E., Aydin A.

SEPARATION SCIENCE AND TECHNOLOGY, vol.36, no.14, pp.3239-3251, 2001 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 36 Issue: 14
  • Publication Date: 2001
  • Doi Number: 10.1081/ss-100107770
  • Title of Journal : SEPARATION SCIENCE AND TECHNOLOGY
  • Page Numbers: pp.3239-3251

Abstract

A novel reagent for gold leaching was synthesized and the leaching conditions investigated. The reagent, 1-phenyl-2-thio-3-(2-hydroxyethyl) urea, dissolved gold at relatively high yields (>95%) in the presence of an oxidant (Fe(III)) in a sulfuric acid solution at pH 0.9-1.2 at room temperature. The effects of certain leaching parameters, such as working pH, reagent-Au mol ratio, oxidant-Au mol ratio, contact time, and temperature are discussed.