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Hydrometallurgy is a branch of extractive metallurgy in which metals are treated using an aqueous solution.

Recupyl's patented process consists of recovering the metals in electric batteries by grinding the batteries and immersing the components in an aqueous solution. The main steps in our process are:

  • Leaching (where the metals are immersed in a solution)
  • Purification (mainly to remove heavy metals) by cementation or electrochemical reduction
  • Separation of the different metals

The leaching is done with either an acid or a base depending on the phase being treated, and an oxidizing agent is added if needed. The metals in solution are in ionic form. 

The purification and separation steps are done via cementation or precipitation, depending on the material to be separated, the amount of the material, and the chemical process.

The liquid effluent is recycled after being treated with methods currently available on the market. 

Hydrometallurgical processes not only give high metal purity, but they are also energy-efficient, have a small carbon footprint, and do not emit dioxins.

They can be used to recover zinc, manganese, cobalt, lithium, and nickel from batteries.

Recupyl's patented process is particularly effective for the chemicals used in today's batteries, and is well-suited to handle the more advanced technologies that are just over the horizon.