Electrooxidation of gold-bearing sulfide concentrate

From: Minerals & Metallurgical Processing | Date: February 1, 2003| Author: | Copyright information

Nonmeeting paper number 02-308. Original manuscript submitted to SME March 2002. Revised manuscript received and accepted for publication August 2002. Discussion of this peer-reviewed and approved paper is invited and must be submitted to SME Publications Dept. prior to August 31, 200. Copyright 2003, Society for Mining, Metallurgy, and Exploration, Inc.

Abstract

Gold losses in the cyanidation of refractory ores are mainly due to the presence of sulfide and carbonaceous materials. Sulfide minerals in the ore can be oxidized by hypochlorite generated electrochemically in the leaching reactor. ...

Read all of this article with a FREE trial to HighBeam Research

Related newspaper, magazine, and trade journal articles from HighBeam Research

(Including press releases, facts, information, and biographies)

Cyanide recycling using strong-base ion-exchange resins
; ...lixiviant for gold. Despite its...precious metal, cyanide solutions may dissolve...usually found in gold ores. The formation...minerals in cyanide solutions, and the relatively...appear to cause gold, iron or copper-cyanide complexes to...
The Process Mineralogy of Gold: The Classification of Ore Types
; ...minerals that affect the processing of gold ores are native gold, electrum, Au-Ag tellurides...important. The main causes of refractory gold, ores are submicroscopic gold, the Au-Ag tellurides...locked in Sulfides. Other types of problem gold ores include copper-gold ...
Characterizing gold in refractory sulfide gold ores and residues
; Gold is present in refractory sulfide gold ores mainly in arsenian pyrite and arsenopyrite...are detected. Chloride-- containing gold ores can generate soluble gold chlorocomplexes...gold recoveries. INTRODUCTION Refractory gold ores are those that do not yield high gold...
Reactions of gold and sulfide minerals in cyanide media
; ...investigated. The cyanidation of synthetic gold ores in the presence of various concentrations...cyanidation. The refractory nature of some gold ores has been attributed in many instances...more common arsenicsulfide minerals in gold ores. At pH 11, arsenopyrite is reported not...
Canadian conference of metallurgists issues call for papers
; CALL FOR PAPERS An International Symposium on the Treatment of Gold Ores will be held in conjunction with the Conference of Metallurgists...carbon, ion exchange, cementation and electrowinning, refractory gold ores (roasting, pressure oxidation, bioleaching and ultra-fine milling...
Cyanide substitutes.
; ...that hydromet-allurgical treatment of gold ores predated the discovery of cyanidation...were effective leaching agents for some gold ores, and the commercial use of these reagents was common by 1880. The cyanidation of gold ores was patented in the UK by J. S. MacArthur...
Anodes for electrodeposition. (Technology Update).
; ...or excess complexant (eg. cyanide solutions or additional complexants...as Rochelle salt in gold cyanide solutions). If the metal dissolves...304-type can be used for gold-cyanide solutions; for chloride solutions...
Characterizing the textural features of gold ores for optimizing gold extraction
; The beneficiation of gold ores begins with an examination and classification...siliceous gangue phases. In the case of gold ores, the gravity concentration of coarse...roasting, etc. 12 The beneficiation of gold ores begins by examining and classifying...
Guimaras mining project opposed; Island folk reject 'glittering proposal' of mining company.(Provincial News)
; ...proposal of a mining firm to explore possible deposits of gold ores on the island. Fil-Asian Strategic Resources and Properties...Corp. had applied for a permit to conduct exploration of gold ores in nine barangays of Nueva Valencia town - Napandong...
Gold Process Mineralogy: Objectives, Techniques, and Applications
; ...mineral processing techniques required, gold ores are commonly classified into two major...pre-treatmentprocesses.1 Generally, placers, quartz vein gold ores, oxidized ores, and silver-rich ores...Antimony, bismuth sulfide, and telluride gold ores are often somewhat refractory due ...