Treatment method of secondary zinc oxide powder
The invention discloses a treatment method of secondary zinc oxide powder, which comprises the following steps: dispersing the secondary zinc oxide powder into an acidic liquid for reaction, and carrying out solid-liquid separation to obtain neutral leaching residues; adding the neutral leaching res...
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| Hauptverfasser: | , , , , , , , , , , |
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The invention discloses a treatment method of secondary zinc oxide powder, which comprises the following steps: dispersing the secondary zinc oxide powder into an acidic liquid for reaction, and carrying out solid-liquid separation to obtain neutral leaching residues; adding the neutral leaching residues and a ferrate acid leaching solution produced by zinc hydrometallurgy into a primary acid leaching reaction tank, carrying out primary acid leaching treatment, and then carrying out solid-liquid separation to obtain primary residues; carrying out secondary acid leaching treatment on the primary slag to obtain secondary acid leaching ore pulp, and carrying out solid-liquid separation on the secondary acid leaching ore pulp to obtain secondary acid leaching underflow; the secondary acid leaching underflow and an oxidizing agent are added into a third-time acid leaching reaction tank, third-time acid leaching treatment is carried out, third-time acid leaching ore pulp is obtained, solid-liquid separation is carr |
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