Gold occurrence in the Sar Cheshmeh porphyry copper ore and its behaviour during beneficiation

M. M. Salari Rad, M. Tsunekawa, T. Hirajima, T. Yoneda

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

An investigation of gold distribution in the mill products of Sar Cheshmeh beneficiation plant demonstrates that on average 44% of the gold is routinely recovered as a by-product in the copper concentrate, and the remaining is lost to the tailing. In order to evaluate the causes of gold losses, the distribution and mode of gold occurrence in the Sar Cheshmeh ore and mill products were studied. Searching for gold within samples and within individual grains of sulphide minerals was carried out by SEM in the backscattered electron mode and SIMS, respectively. The mineralogical distribution of gold revealed by microbeam techniques were combined with the results of relevant metallurgical experiments including, sizing, heavy liquid separation, and diagnostic leaching tests, and the nature and location of gold in the ore and mill products were determined. The combined results of the experimental approaches pursued suggest that while there are some gold in solid solution and/or colloidal size within sulphides of the Sar Cheshmeh ores, "visible" gold is the principal form of gold occurrence at Sar Cheshmeh.

Original languageEnglish
Title of host publication4th International Conference COPPER 99-COBRE 99
EditorsB.A. Hancock, M.R.L. Pon, B.A. Hancock, M.R.L. Pon
Pages129-143
Number of pages15
Volume2
Publication statusPublished - 2002
Externally publishedYes
EventFourth International Conference COPPER 99 - COBRE 99 - Phoenix, AZ, United States
Duration: Oct 10 1999Oct 13 1999

Other

OtherFourth International Conference COPPER 99 - COBRE 99
CountryUnited States
CityPhoenix, AZ
Period10/10/9910/13/99

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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