Metals & Mining

Processing and Product Recovery Systems

HPD® Evaporation and Crystallization

Mining & Metal Process Solutions

Multi-Stage flash evaporator system

HPD® Multi-Stage Flash evaporator system- Alumina Industry installation - South America

Thermal Solutions

Veolia Water provides the expertise required for several metals and mining production processes. 

HPD® Evaporation and crystallization systems are often a critical process component in evaporites mining, by-product recovery and internal process water management within the mining and metals processing industries.

Production Processes

HPD® MVR Salt Crystallizer, soultion-mined sodium chloride

HPD® MVR Salt Crystallizer, soultion-mined sodium chloride

Evaporites Mining

  • Potash: potassium chloride (KCl)
  • Salt: sodium chloride (NaCl)
  • Soda Ash: sodium carbonate (Na2CO3), sodium bicarbonate (NaHCO3)
  • Nitrates: NaNO3 
  • Sulfates: Na2SO4

Co-Products from Extraction & Refining

By-products, Tailings & Bitterns

  • Metals: ammonium sulfate ((NH2)2SO4), sodium sulfate (Na2SO4
  • Salt, Solar: magnesium sulfate (MgSO4)


Lithium Processing Experience

Advanced lithium batteries requires increasingly pure lithium compounds

Veolia has supplied several process systems to leading lithium suppliers worldwide as well as having performed extensive analytical, bench and pilot-scale testing.

• Lithium brine concentration • Lithium salts crystallization

• Lithium salts purification by re-crystallization

• By-products recovery from lithium processing

• Impurity removal (precipitation, ion exchange, . . .)

• Solid/liquid separation systems and solids handling

Lithium Processing Capabilities

Lithium Salts Crystallization

Lithium Chloride (LiCl)

Lithium Carbonate (Li2CO3)

Lithium Hydroxide anhydrous and monohydrate (LiOH)

Lithium Sulfate anhydrous and monohydrate (Li2SO4)

Lithium Bromide (LiBr)

Lithium Phosphate (Li3PO4),

By-product Recovery from Lithium Processing

Potassium Chloride (KCl)

Sodium Sulfate (Na2SO4)

Sodium Chloride (NaCl)

Potassium Sulfate (K2SO4)

Boric Acid (H3BO3)

Specialty Metals Systems

HPD® crystallizer recovers ammonium sulfate in mined ore application

HPD® crystallizer recovers ammonium sulfate in mined ore application

HPD specialty metal crystallization systems from Veolia have processed a wide variety of specialty metals such as vanadium, tungsten, titanium, silver, zinc, lithium and molybdenum. These systems have recovered metals from spent catalysts and even produced lithium chloride for production of lithium batteries.

Copper and nickel sulfate crystallization is part of ore refining and recovered from spent metal processing solutions in Veolia designed systems. In addition, HPD crystallizers recover fertilizer grade ammonium sulfate generated in the refining of nickel from mined ores.