process for the treatment of refractory gold concentrates

process for the treatment of refractory gold concentrates

Pilot plant pressure oxidation of refractory gold A pilot plant campaign has been conducted by Sherritt Technologies in support of Eldorado Gold Corporation's evaluation of pressure oxidation (POX) technology for the treatment of refractory gold concentrates from the Certej deposit in Romania. Preliminary batch tests indicated that gold extraction from the oxidised concentrates in subsequent cyanide leaching was adversely affected by the

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AU766123B2 - The recovery of gold from

AU766123B2 AU71583/00A AUA AU766123B2 AU 766123 B2 AU766123 B2 AU 766123B2 AU 71583/00 A AU71583/00 A AU 71583/00A AU A AU A AU A AU 766123 B2 AU766123 B2 AU 766123B2 Authority AU Australia Prior art keywords ores treatment gold characterised carrying out Prior art date Legal status (The legal status is an assumption

bioleaching of gold concentrates - immo-t

Autoclave technology of refractory gold-bearing pyrrhotite concentrates and residues of bioleaching Proceedings of ALTA 2013 Gold-Precious metals Session 2013. MORE + Mission 2015: Bioleaching To study the feasibility of a potential bioleaching project, we used the BIOX project, a process for the treatment of refractory gold concentrates, as

Novel Processes for the Treatment of Sulphidic This paper presents initial findings of a project examining novel processes for the treatment of refractory sulphidic gold concentrates. Non-oxidative roasting of such concentrates for 12 hours at 750°C resulted in the finely disseminated gold agglomerating to form discrete grains. The pyrite and arsenopyrite decomposed to form pyrrhotite, whilst the labile sulphur and arsenic drivenRefractory Gold | Mining | SGSFirst, the gold recovery to the concentrate should be sufficiently high that the tailings can be discarded without further treatment, and the mass ratio of concentrate to tailings should be low. SGS has extensive experience with environmentally sustainable refractory gold extraction. Our experienced team of metallurgical professionals has

Mintek-BacTech's bacterial-oxidation technology for sulphide ores. The processes are aimed at both refractory gold-bearing and base-metal concentrates. Previously, BacTech had commercially implemented the refractory gold process at the Youanmi Gold Mine in Western Australia. More recently, the process has been incorporated in the Sulphide Treatment Plant at the Beaconsfield Gold Mine in Tasmania

Bioleaching of Vaal Reefs Pyrite ConcentratesBioleaching of Vaal Reefs Pyrite Concentrates Mintek developed the Bacox™ process for the treatment of refractory gold concentrates in the late 1980s and early 1990s, in partnership with Anglo American Corporation. This culminated in the design, construction, commissioning and operation of two large-scale pilot plants, which treated pyritic flotation concentrates obtained from the Vaal Reefs

ROBUST, LOW-COST BIOX PROCESS AT FOSTERVILLE GOLD ROBUST, LOW-COST BIOX PROCESS AT FOSTERVILLE GOLD MINE, AUSTRALIA A robust, efficient and environmentally friendly process to economically treat the refractory Fosterville gold ore. Kirkland Lake Gold is a mid-tier gold producer targeting ~530,000 – 570,000 ounces in Tier 1 mining jurisdictions of Canada and Australia. The production profile of the Company is anchored by three

Bacterial oxidation of refractory gold

Bacterial oxidation is now considered to be a proven commercial technique for the treatment of refractory sulfide gold concentrates. Since 1986 the technique has been applied successfully on a commercial scale for the removal of arsenopyrite and pyrite to give high gold extractions on cyanidation (Van Aswegen et al., 1989).A chronology of gold projects, recognized as using agitated aerated REFRACTORY GOLD - PanTerra Gold LimitedRefractory gold ores require either or both physical and chemical pre-treatment, prior to cyanidation. The proportion of known refractory gold resources relative to overall gold resources, is increasing year on year throughout the world. Albion Oxidation Process. The Albion Oxidation Process which was developed in Australia and is patented by a subsidiary of global mining group, Glencore PLC Factors Affecting the Selection of BIOX® as the The BIOX® process was developed in the late 1980's for the treatment of refractory gold concentrates. The process has since developed into a commercially proven process with 12 successful installations of which 6 are currently still in operation. During this time development of the technology continued to improve the efficiency of the process, improve the reliability of the equipment used Application of the Albion Process for the treatment of GPM Gold Project –Albion Process™ Plant Commodity –Gold Location –Armenia Client –GeoProMining Refractory pyrite concentrate 116,000 ozpa gold Commissioned June 2014 Application: Recovery of precious metals from a refractory arsenic bearing deposit within the setting of a soviet era mining complex Oxidative Leach Circuit

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