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ENVIRONMENTAL TECHNOLOGIES

HALOMET TECHNOLOGY®

The depletion of easily exploitable resources together with the efforts made for the recovery of waste, has made the leaching in chloride medium acquire a renewed interest for the recovery of metals that must be recovered due to its economic interest or environmental restrictions associated with lead.

La tecnología HALOMET® parte de una lixiviación en medio cloruro y tras una tecnología de purificación mediante extracción con disolventes, permite la recuperación selectiva de los metales presentes en residuos industriales o urbanos.

The use of leaching in chloride medium allows the dissolution of metals that may be refractory to conventional leaching technologies such as the use of sulfuric acid or that in these conditions the production of waste makes the technology not environmentally viable.
La tecnología HALOMET® consta de las siguientes etapas:

LEACHING CIRCUIT IN CHLORIDE MEDIUM:

Leaching is carried out in chloride acid medium in those raw materials where the use of sulfuric acid is not effective.

SOLVENT EXTRACTION:

the solvent extraction stage concentrates and purifies the electrolyte and the re-extraction stage is performed using sulphuric acid, producing a zinc electrolyte suitable for conventional electroplating technology

ELECTROLYSIS CIRCUIT IN SULPHATE MEDIUM

High-purity metallic zinc plates are produced by using an electric current. The exhausted electrolyte is used again in the stripping stage.

The technology allows in a single SX cycle the production of a zinc electrolyte in sulphate medium from a leaching liquid in chloride medium. At the same time it allows the recovery of other metals of interest such as lead in different stages of the technology.

Halomet Explanation
Halomet Graphic

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TR DIVISIÓN DE INVESTIGACIÓN Y DESARROLLO
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