With fast-tracked development being the primary objective of Tungsten at the time of engagement, the battery limits of Primero’s scope included maturing a scoping level engineering report to class 4 capital cost estimate and definitive feasibility study level detailed design.
Tungsten Mining has 100% of the tungsten and molybdenum rights on a contiguous group of tenements that have been the subject of significant previous exploration for tungsten and molybdenum.
The Mt Mulgine process plant comprises the following five areas:
- Crushing and ore sorting;
- Concentrator, including primary grinding, gravity separation, regrinding, flotation and tails;
- Concentrate handling;
- Reagents; and
Additionally, Tungsten purchased a secondhand mill and gravity plant and wished to relocate the Tabba Tabba plant and repurpose the equipment as far as reasonably practicable throughout the Mt Mulgine flowsheet.
Primero were responsible for defining the process flowsheet, equipment selection, condition reporting upon secondhand equipment and capital cost preparation for the engineering, procurement and construction of the tungsten and molybdenum concentrator. This work has included value engineering and optioneering to define alternative start-up options, in terms of scale (production throughput), plant configuration and cost trade off (capital versus operating).
As critical long lead items, Primero worked alongside Tomra Sorting Solutions to identify and procure two x-ray sorting solutions.