Method for producing nickel sulfate
AssigneeSK Innovation Co., Ltd.
InventorsHyeon Hui LEE, Ji Yun PARK, Su Hyang SHIM, Su Min YOO, Keum Jung YOON
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Abstract
A method for producing nickel sulfate according to exemplary embodiments may prepare a raw material containing nickel. A first leachate may be produced by selectively leaching nickel from the raw material containing nickel using an oxidant. A second leachate may be produced by separating a residual metal from the first leachate. Thereafter, nickel sulfate may be obtained from the second leachate. Accordingly, unnecessary byproducts may be reduced by omitting a separate nickel extraction step.
Claims15
A method for producing nickel sulfate, the method comprising:
- preparing a nickel-containing raw material;
- producing a first leachate in which nickel is selectively leached from the nickel-containing raw material using an oxidant;
- separating a residual metal from the first leachate to produce a second leachate;
- and
- obtaining nickel sulfate from the second leachate.
A method for producing nickel sulfate, the method comprising:
- preparing a nickel (Ni)-mixed hydroxide precipitate (MHP);
- selectively leaching nickel from the nickel (Ni)-mixed hydroxide precipitate to form a first leachate;
- separating a residual metal including magnesium, calcium, or zinc from the first leachate to produce a second leachate;
- and
- obtaining nickel sulfate from the second leachate.
Dependencies are inferred from the claim text.