High-Pressure Gold Recovery

FELUWA MULTISAFE® Pumps at the Hemi Gold Project, Australia, for Gold Extraction Under High Pressure

The Hemi Gold Project in Western Australia is one of the country’s largest and most forward-thinking gold mining initiatives. At its core lies a highly complex metallurgical process designed to meet the highest standards of efficiency, sustainability, and operational reliability. A particularly critical stage is the Pressure Oxidation (POx) process – a high-pressure method for processing gold- and sulfur-bearing sulfide concentrates.

Key Technology in the POx Process: FELUWA MULTISAFE® Pumps

To handle the autoclave feed of highly abrasive and chemically aggressive media, FELUWA was selected as a technology partner. The project deploys four double hose-diaphragm pumps of the type TGK 200 – 3 DS 100, precisely engineered to meet the demands of the POx process:

• Flow rate: up to 90 m³/h
• Discharge pressure: up to 35 bar
• Design: three-head, single-acting, leak-proof

Thanks to their hermetically sealed construction and highly resistant wetted components, MULTISAFE® pumps ensure safe and uninterrupted operation even under extreme process conditions.

Why Pressure Oxidation (POx)? – Efficiency Meets Sustainability

The POx process delivers an exceptionally high gold recovery rate of up to 95%, outperforming alternative methods in efficiency. By combining flotation, POx, and carbon-in-leach (CIL), only the concentrate enriched with valuable metals undergoes the high-pressure oxidation process. This targeted approach significantly reduces operating costs and lowers CO₂ emissions by approximately 25%.

Proven, robust, and scalable: POx is the ideal technology for sustainable large-scale projects – an ambition FELUWA shares with its pump technology.

Advantages of FELUWA MULTISAFE® Pumps in the POx Process

• Safe and leak-free conveyance of gold-bearing sulfide concentrates
• Minimal downtime due to low-wear construction
• High adaptability to abrasive and chemically aggressive media
• Maximum plant availability through robust design and durable components

Further Process Stages in the Hemi Project (not supplied by FELUWA)

• Carbon-in-Leach (CIL): Processing of activated carbon-containing slurries for gold recovery
• Tailings Management: Transport of residual materials to specially designed containment facilities

Success Through Experience – FELUWA in Global Operation

The choice of FELUWA is no coincidence: MULTISAFE® technology has proven itself worldwide in the mining and process industries – from India and South Africa to China and Brazil. At the Hemi Gold Project, FELUWA pumps play a vital role in ensuring process stability, environmental compatibility, and economic efficiency.

German Pump Technology Setting New Standards

With its MULTISAFE® double hose-diaphragm pumps, FELUWA delivers far more than a product – it provides a customized solution for maximum safety and efficiency in critical processes. The Hemi Gold Project stands as another example of how FELUWA pump technology is setting new benchmarks on a global scale.

Source & Picture: FELUWA