| Company | OSMI |
| Date | 2022 |
| Region | Nevada, USA |
| Commodities | Lead, Copper, Zinc, Silver, Gold |
| Mine Type | Underground |
| Throughput | 91,390 st/y |
| Status | Commissioning |
Executive Summary
The Virginius Mine concentrator has undergone significant redesign and upgrades to recover lead, copper, zinc, silver, and gold from underground mine feed. The processing plant includes crushing, grinding, and selective flotation circuits. Commissioning of the redesigned process plant was initiated in September 2021. The plant is designed for an annual throughput of 91,390 short tons per year.
Processing Methods
The process involves primary and secondary jaw crushing, followed by rod and ball milling. Flotation circuits separate lead and zinc concentrates using tank-type, trough-type, and column flotation cells. Concentrates are thickened and filtered using vertical plate filter presses.
Reports
Website: https://miningdataonline.com/property/3465/Revenue%E2%80%93Virginius-(Ouray)-Mine.aspx
Report Date: 2022
Region: Nevada, USA
Project Status: Commissioning
Commodity: Lead, Copper, Zinc, Silver, Gold
Throughput: 91,390 st/y
Mine Life:
Mine Type: Underground
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.
Virginius Mine — 2018 Feasibility Study
Virginius Mine — 2018 Feasibility Study
| Company | OSMI |
| Date | 2018 |
| Region | Revenue, Nevada, USA |
| Commodities | Lead, Zinc, Silver, Gold, Copper |
Executive Summary
This 2018 Feasibility Study outlines the proposed upgrades to the existing processing plant at the Virginius Mine, operated by OSMI. The report details a comprehensive reconfiguration of the lead and zinc recovery concentrator to address issues with ore variability, blasting methods, and material handling plugging experienced during the 2013-2015 operation period. The design, finalized by Barr in 2017 based on prior work by Lycopodium and SRK, aims to produce desired products at specific rates and mill feed head grades.
The processing plant is designed for an annualized throughput of 91,390 short tons per year. The circuit includes run-of-mine storage, crushing with primary and secondary jaw crushers, and a grinding circuit consisting of a rod mill in open circuit feeding a closed ball mill circuit. The flotation section features bulk lead rougher flotation followed by zinc rougher flotation, with dedicated cleaner circuits for both metals utilizing tank-type and column flotation cells.
Key commodities targeted for recovery include lead and zinc concentrates, with significant recovery of silver, gold, and copper into the lead concentrate. The final products are dewatered and filtered using vertical plate filter presses, with tailings disposed of in a dry stack facility. The design incorporates specific equipment such as Metso C80 and McLanahan 1248 crushers, and aims for high availability and recovery rates for the sulphide ore body.
Website: https://miningdataonline.com/property/3465/Revenue%E2%80%93Virginius-(Ouray)-Mine.aspx
Report Date: 2018
Region: Revenue, Nevada, USA
Project Status:
Commodity: Lead, Zinc, Silver, Gold, Copper
Throughput:
Mine Life:
Mine Type:
Ore type:
