Mining & Processing

How Cobalt Is Mined and Processed

Cobalt (Co) is a battery metal with global annual production of approximately 230,000 tonnes, primarily from DR Congo and Indonesia. Typical ore grades range from 0.1-0.4% Co (copper-cobalt ores).

Mining Methods

Cobalt is extracted through the following methods, selected based on deposit type and geology:

• Industrial open-pit mining
• Artisanal and small-scale mining (ASM)
• Byproduct of copper/nickel mining

Ore Types and Mineralogy

The principal ore types and mineral sources for Cobalt include:

• Heterogenite
• Cobaltite
• Carrollite
• Pentlandite - Ni-Co

Processing and Beneficiation

Following extraction, Cobalt ore undergoes the following processing stages:

1. Solvent extraction and electrowinning (SX-EW)
2. Hydrometallurgical processing
3. High-pressure acid leaching (HPAL)

Major Mines and Production Centers

The following are key Cobalt mining and processing operations worldwide:

Environmental and Regulatory Considerations

Mining and processing of Cobalt must comply with environmental regulations governing water use, tailings management, emissions, and land rehabilitation. Increasingly stringent environmental standards are raising production costs but also driving innovation in cleaner extraction technologies. The social license to operate and community engagement have become critical factors in project development, particularly in DR Congo where 73% of global production is concentrated.