Separation of zinc and copper from copper flue ash
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Regarding the separation of zinc and copper from copper flue ash, the basic technical parameters are as follows: Cu: 4–6%, Zn: 50%, Fe: 2%. An economical method for separating copper from zinc is sought. I would appreciate guidance from experts. Thank you.
Extraction and separation after acid leaching can be considered
The boiling point of zinc is 906, the melting point of copper is 1083, and its boiling point is 2595. Could we consider a solution from this perspective?
First, leaching is carried out using sulfuric acid, followed by the separation of copper and zinc through extraction methods, after which zinc sulfate and copper sulfate are produced (or copper is electrowon).
Generally, most processes involve steps such as acid leaching, iron powder displacement, oxidative precipitation of iron, separation, cadmium removal using zinc powder, concentration, and crystallization. Extraction separation is also used.
Simple and easy to use – definitely support it! ! ! ! :victory: :victory: :victory:
Why must it be separated? Can’t zinc-copper alloys be produced through electrowinning after dissolution?
Generally, most processes involve steps such as acid leaching, iron powder displacement, oxidative precipitation of iron, separation, cadmium removal using zinc powder, concentration, and crystallization. Extraction separation is also used. The iron removal solutions and the costs associated with iron removal are a problem
If zinc powder is used, high cost is one aspect of it. Furthermore, zinc’s chemical reactivity is much higher than that of iron. If the leachate contains high levels of arsenic, it is easy to displace the arsenic. If iron is used as a displacing agent, arsenic can be removed after oxidation, further reducing the amount of arsenic in zinc sulfate. What do you think?