Ollachea Prefeasibility Study — 2012 Technical Report
| Company | Not Specified in Text |
| Mine | Ollachea |
| Date | 2012 |
| Region | Peru |
| Commodities | Gold, Silver |
Executive Summary
The Ollachea Prefeasibility Study outlines the processing plant design for the Ollachea project located in Peru. The facility is designed to process 1.1 million tonnes per year of ore with a head grade of 3.37 g/t Au. The plant utilizes a combination of gravity concentration and Carbon-in-Leach (CIL) circuits to achieve an overall recovery of 91.1%.
Crushing involves a mobile plant with a primary jaw crusher and secondary Vibrocone crusher, feeding a single-stage ball mill. Gravity recovery is achieved using Knelson concentrators and Gemeni tables for both coarse and fine gold. The CIL circuit includes a High Mass Pull (HMPG) section for gravity concentrates and a mainstream section for cyclone overflow.
Tailings management includes cyanide detoxification using the Air/SO2 process, followed by thickening and filtration. Filtered tailings are stored in a dry-stack facility or used for paste backfill underground. The plant also incorporates water treatment and reagent preparation facilities to support the gold recovery and refining process.
Website: https://en.wikipedia.org/wiki/Ollachea_District
Report Date: 2012
Region: Peru
Project Status:
Commodity: Gold, Silver
Throughput:
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