| Company | Ore Reserves Engineering |
| Date | 2011 |
| Region | Galicia, Spain |
| Commodities | Gold |
Executive Summary
This technical report details the processing plant design for the Corcoesto Gold Deposit located in Galicia, Spain. The facility is designed for a throughput of 6,000 tonnes per day, based on a Preliminary Economic Assessment (PEA) conducted by Ore Reserves Engineering in November 2011. The current design is at the feasibility study level, utilizing the flowsheet described in the PEA for capital and operating cost assumptions.
The recovery method integrates gravity concentration, flotation, and cyanidation. Ore is crushed to a nominal 6-inch product and stored in a stockpile before being fed to a SAG and ball mill circuit. Gravity concentrates are produced via centrifugal separators, while flotation is utilized for rougher, scavenger, and cleaner stages.
Final gold recovery is achieved through a six-stage leaching and carbon absorption circuit, followed by electrowinning and smelting into a doré product. The process includes detoxification of leach tails to reduce free cyanide concentrations below 0.06 ppm.
Website: https://www.mining-technology.com/projects/corcoesto-project/
Report Date: 2011
Region: Galicia, Spain
Project Status:
Commodity: Gold
Throughput:
Mine Life:
Mine Type:
Ore type:
Technical report and processing history
The following archived source profiles have been consolidated here to preserve the project’s processing history and study context.
Preliminary Economic Assessment for the Corcoesto Gold Deposit
Preliminary Economic Assessment for the Corcoesto Gold Deposit
| Company | Ore Reserves Engineering |
| Date | Nov 2011 |
| Commodities | Gold |
| Throughput | 250 tonnes per hour |
| Status | Preliminary Economic Assessment |
Executive Summary
The 2011 Preliminary Economic Assessment for the Corcoesto Gold Deposit outlines a recovery method combining gravity, flotation, and cyanidation. The process begins with conventional crushing and screening to a 6-inch product, which is fed to a stockpile and then reclaimed at 250 tonnes per hour. The ore is ground in a SAG and ball mill circuit, with primary cyclone underflow sent to centrifugal gravity separators.
The gravity concentrate and flotation concentrate are combined and cyanide leached in a six-stage circuit achieving 99.5% gold extraction. The process includes rougher and scavenger flotation cells, followed by regrinding in a vertimill and cleaning in flotation columns. Final recovery involves electrowinning and smelting into doré, with tailings detoxified to reduce free cyanide levels below 0.06 ppm.
Processing Methods
Website: https://www.mining-technology.com/projects/corcoesto-project/
Report Date: Nov 2011
Region:
Project Status: Preliminary Economic Assessment
Commodity: Gold
Throughput: 250 tonnes per hour
Mine Life:
Mine Type:
Ore type:
