Beneficiation economics start with the specific mineral

“Beneficiation” describes moving beyond raw extraction. It does not name a plant. The International Energy Agency identifies opportunities for spherical graphite in East Africa, high-purity manganese sulphate in South Africa and Gabon, and processed cobalt and copper materials in the Democratic Republic of the Congo and Zambia. Each route has its own input and market.

A policy that applies one export rule, margin assumption or factory model to every mineral hides the engineering. Compare three pathways and the differences become the analysis.

Graphite: begin with product qualification

Battery anode material needs graphite with controlled shape, size, purity and electrochemical performance. Natural graphite concentrate passes through milling, shaping, purification and coating before cell customers can use it.

The ore's flake distribution and impurities affect recovery and process choice. Chemical purification needs reagents, waste treatment and control. Thermal routes need high-temperature energy. A country with graphite resources still needs to test the specific feed.

Customers qualify material over time because inconsistency can affect battery performance. A plant can be mechanically complete and lack approved sales. Pilot samples, independent testing and customer feedback belong before full-scale assumptions.

Economics should include yield loss from concentrate to saleable coated product. Comparing a tonne of ore with a tonne of final material ignores how much feed and processing the product requires.

Manganese: start from chemical specification

High-purity manganese sulphate is a chemical input, not a renamed ore. Feed purity, reagent consumption, waste and energy influence cost. Battery customers require tight impurity limits.

South Africa and Gabon have manganese resources and existing mining activity, which can support feed and skills. The IEA identifies potential for expanded high-purity sulphate production. The opportunity remains conditional on plant economics, infrastructure and offtake.

A processor may compete with established chemical suppliers, not only other mines. Delivered cost includes acid or other reagents, power, packaging and shipping. The buyer may require certification and long-term consistency before committing volume.

Co-products and waste need realistic value and cost. Do not make a project viable by assigning revenue to a by-product without a customer and specification.

Copper and cobalt: map joint production and risk

Copper and cobalt can occur together in Central African deposits, but production routes and revenue exposure differ by ore and operation. One metal can drive mine economics while the other contributes a by-product credit.

Processing decisions involve concentration, leaching, smelting or refining under specific mineralogy. Power and transport are material constraints. Border logistics can affect reagents entering and products leaving.

Cobalt markets carry price and sourcing scrutiny. Customer diligence can include traceability, labour, environment and chain of custody. Compliance cost is part of market access, not a public-relations addition.

Copper has deep global demand and its own treatment charges, grades and contract conventions. A high copper price does not guarantee a profitable local smelter if feed, power and scale do not work.

Three finance models follow

Graphite qualification risk can require patient equity and pilot finance before debt. A manganese chemical plant may rely on technical partners and contracted sales. A copper-cobalt processor can depend on long mine supply, infrastructure and commodity cycles.

Lenders ask which completion test releases funds, which customers are creditworthy and how price risk is allocated. Government guarantees can support a project and expose public finances. The contingent amount belongs in disclosure.

Working capital differs. Long qualification creates inventory and receivables before stable volume. Imported reagents may need buffer stock. Commodity sales can settle under provisional pricing and later adjustments.

Use project cash flow in the currencies actually paid and received. A local-value policy does not eliminate imported capital goods or foreign debt service.

Industrial policy should split the category

Set standards, infrastructure and skills for the selected product. A general ban on unprocessed exports can strand production if domestic capacity is absent, encourage under-declaration or weaken mine cash needed for investment.

Time-bound measures with published milestones can link restrictions to real commissioning. Competitive access matters so one processor does not become the only buyer with power over miners.

Regional supply can improve scale. Customs, rules of origin and settlement need to support feed crossing a border. A plant near power and a port may serve mines in another country more efficiently than a national plant at each deposit.

That regional design needs contracts before construction: compatible feed specifications, border documentation, transport capacity and a method for allocating price and quality disputes. A policy memorandum between states does not ensure that trucks, rail slots or working capital will be available when the plant starts.

Public metrics should show feed purchased, recovery, output meeting specification, export value, local payroll, tax and support. Gross product value alone overstates value added because it includes feed and imported inputs.

Ask the mineral question

Before accepting a beneficiation claim, ask for feed specification, process, energy, yield, customer qualification, saleable product and delivered cost. Then ask what public support closes which gap.

The IEA's work offers specific pathways and a high-potential scenario, not a command to build every stage everywhere. Graphite asks about qualification. Manganese sulphate asks about chemical purity. Copper-cobalt asks about joint metallurgy, infrastructure and responsible supply.

The category becomes investable after it stops being a category.

Sources

• International Energy Agency, 6 October 2025: Stepping Up the Value Chain in Africa