Name of the Project
K.Hill battery-grade manganese project.

Location
Botswana.

Project Owner/s
Giyani Metals Corporation.

Project Description
K.Hill will be one of the biggest high-purity manganese sulphate monohydrate projects in the world. High-purity manganese sulphate monohydrate (HPMSM) is a refined precursor material used in the production of cathode powders for lithium-ion batteries deployed in electric vehicles.

A preliminary economic assessment (PEA) published in July 2023 evaluates a base case scenario that considers a single production line with a feed capacity of 200 000 t/y to process manganese oxide material to produce HPMSM over a 57-year life-of-project (LoP). The LoP includes a 49-year life-of-mine plus 8 years of stockpile rehandling.

The PEA also evaluates an upside case, which assumes the construction of an additional production line from Year 5 of operations to increase total feed capacity to 400 000 t/y, reducing the LoP to 31 years.

The project includes a crushing facility, including a run-of-mine pad and stockpiles, a three-stage crushing plant and a crushed material bin. It also includes a processing area, including grinding, extraction, purification, fluoride polishing, crystallisation, product storage and handling; water treatment, reagent storage and tails handling; a sulphur dioxide plant; plant infrastructure and utilities, including steam and air plants; and low-voltage switch rooms.

A 4.5 MW solar plant covering 7.6 ha will be built 1.2 km west-north-west of the processing plant entrance gate. The large-scale demonstration plant that emulates the continuous process of the proposed full-scale K.Hill commercial plant is under construction in South Africa. The plant will validate the process flowsheet, mitigate commercial processing plant risk and facilitate offtake qualification.

Potential Job Creation
Not stated.

Net Present Value/Internal Rate of Return
The project has a pretax net present value, at an 8% discount rate, of $1.21-billion and an internal of return of 33%, with a payback period of two years.

Capital Expenditure
$282.64-million.

Planned Start/End Date
First commercial production is expected in the third quarter of 2025, with ramp-up expected to be completed in the third quarter of 2027.

Latest Developments
Giyani has appointed Wood as the lead consultant on its definitive feasibility study (DFS), which is expected to take about 15 months to complete. The DFS will run concurrently with Giyani’s other activities of operating the demonstration plant, securing licences and permits, as well as completing offtake agreements and project financing.

Key Contracts, Suppliers and Consultants
SRK Consulting (feasibility study); Mintek (metallurgical testwork); Tetra Tech (metallurgical testwork programme); and Wood (lead DFS consultant).

Contact Details for Project Information
Giyani Metals Corporation, email info@giyanimetals.com.