Enhancing copper processing performance

Copper production depends on stable flotation chemistry, controlled impurity management and reliable downstream performance. Lhoist supports you with lime-based solutions that enhance both sulphide and oxide ore processing. Lime (quicklime), typically after slaking, enables effective flotation performance, manages impurities during leaching, and supports environmental compliance across downstream operations.

Copper sulphide flotation

Our lime solutions help you: 

  • Optimize pH for stronger sulphide recovery 
  • Condition mineral surfaces for more selective flotation 
  • Depress pyrite to reduce penalties and improve concentrate quality 
  • Reduce steel ball corrosion for more stable milling 

The result: A more efficient, more predictable flotation circuit that boosts your operational performance day after day. 

Acid leaching of copper ore

For oxide ores and ore bodies unsuited to flotation, reliable leaching chemistry is critical. Our lime solutions help you: 

  • Precipitate impurity loads that can weaken SX/EW performance 
  • Protect downstream processes from contamination 
  • Strengthen environmental control, even in challenging high rainfall regions 
  • Increase metal recovery with cleaner, clearer leach solutions 

With Lhoist, you gain cleaner operations, higher yields, and the peace of mind that comes with stronger regulatory compliance. 

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Let’s improve your copper recovery

Our experts are ready to support your sulphide flotation or oxide leaching challenges with tailored lime‑based solutions. Whether you need help with pH control, impurity management, or downstream compliance, we work with you to optimize performance.