Zinc oxide is dissolved in mild acidic conditions at low temperature using the acid solution produced in the SFL stage.
The resulting solid from the previous stage is subjected to a strong acid treatment at high temperature to achieve the dissolution of the zinc ferrite.
The LIP4CAT® technology allows for the recovery of zinc from calcine in just two process stages because, when associated with ZINCEX® technology, it enables leaching reactions under more diluted conditions.
These leaching conditions, with low pulp densities, allow very high leaching efficiencies to be achieved using only two leaching stages and milder reaction conditions.
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