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Carbon ADR plants

Maximise gold and silver recovery with a complete carbon ADR plant from FLS

Covering the full carbon processing flowsheet, FLS carbon ADR plants are engineered to deliver highly effective, efficient, and reliable precious metals recovery. Our robust systems require little maintenance, offering long and trouble-free service in the most demanding applications.

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Key benefits of our carbon ADR plants

  • Complete, integrated systems

    We supply complete modular/packaged carbon processing plants from elution and electrowinning to carbon regeneration and refining. Every component is selected and sized according to your needs from our proprietary equipment lines or trusted third-party suppliers to maximise extraction, recovery, and efficiency.

  • Single-source warrantee

    From inlet to outlet tie-in points, every component of our carbon ADR plants is protected by our single-source warrantee. You don’t have to contact multiple suppliers to resolve an issue or replace a part that has failed. We’ll take care of it for you.

  • Designed for long-life and maintenance

    Longevity and maintenance are essential factors in carbon ADR plant design. Most of our components are made of carbon steel with stainless steel available as an option – but it’s usually not necessary. Pipe flow velocities are kept reasonable to reduce maintenance and extend equipment life. Equipment is laid out for easy access throughout the plant.

  • Reduce need for skilled labour

    We all know the mining industry needs more skilled labour. This lack can make it hard to attract the people you need to run your mineral processing lab, especially when the mine is in a remote location. With their reduced for human involvement, automated laboratories negate that challenge, ensuring a reliable and accurate flow of sample data, regardless of staffing concerns.

Our carbon ADR plants

Our full-flowsheet carbon ADR plants are designed to recover gold or silver from a pregnant leach solution and turn it into a final, saleable product. Ranging in size from 6x14 to 8x20 mesh, they can handle solutions loaded with gold and/or silver from 2400 to 10,000 grams per tonne. Our complete systems also include structural steel, piping and valves within the battery limits.

Adsorption

FLS offers a range of leach and adsorption circuits, including carbon in column (CIC), leach-carbon in pulp (CIP) and carbon in leach (CIL), each designed to deliver optimum gold and silver recovery, as simply and inexpensively as possible.

  • Proper circuit design.
  • Robust and easy to maintain.
  • Cost-effective metals extraction.  

Elution

Our integrated elution/strip systems can process 1 to 72 tonnes of loaded carbon per day, with the highest energy efficiency and significant cost savings. Offering patented Zadra or AARL systems, we select the best solution for your plant. 

  • Integrated, complete systems. 
  • Effectively remove metals between 50-100 ppm. 
  • Optimised energy consumption.  

Our carbon ADR plants

Electrowinning

Our innovative stainless steel electrowinning cells can treat 15-80 gallons per minute (3.5-18m3/hr) of pregnant solution from very low to very high metals concentrations. They work with all metal recovery systems, including Zadra and AARL elution systems.  

  • Safe and robust.
  • Easy sludge removal.
  • Customisable configuration.  

Maintenance & service of our carbon ADR plants

Our aftermarket department offers reliable and timely supply of spares and wear parts, ensuring minimal downtime and optimal equipment performance. Our specialists are also readily available to provide ongoing operational support. Whether it’s technical advice, troubleshooting or circuit optimization, we work closely with mine site teams to ensure the longevity and efficiency of the equipment throughout its lifecycle. Additionally, we offer comprehensive support services, including circuit audits, preventive maintenance programs, training for mine operators and maintenance personnel, and detailed reporting on equipment performance. Our goal is to help maximise recovery, minimise downtime, and ensure the safe and efficient operation of your FLS systems and equipment.

Learn more about FLS service centres

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Frequently asked questions

FAQs for carbon ADR plants

A carbon ADR – or adsorption, desorption, and recovery – plant is used to recover precious metals like gold and silver. The process involves adsorbing metals onto activated carbon from a pregnant leach solution, then stripping the metal from the carbon using a desorption solution and recovering it via electrowinning. The recovered electrowinning sludge is refined to produce a final saleable product. 

Carbon ADR plants feature a range of equipment, including carbon adsorption circuits, elution systems (Zadra or AARL), electrowinning cells, carbon regeneration kilns, mercury retorts and abatement systems (when treating mercury-containing material), and smelting furnaces.

Carbon ADR plants follow ore crushing/grinding and cyanide-based leaching of the precious metal ore, recovering the metal from the pregnant leachate solutions and turning it into a final saleable product in the form of doré bars.