- Commercial basic
nickel carbonate is made by precipitation from a nickel solution,
usually the sulphate, with sodium carbonate
- Nickel carbonate can
be prepared by the oxidation of nickel powder in ammonia and dioxide.
Boiling away the ammonia causes precipitation of pure nickel
carbonate
- There are
differences in the manufacturing conditions and precipitation agents
used for the production of pure nickel carbonate and nickel
hydroxycarbonates
- Nickel carbonate is
produced at lower temperatures (< 50 °C) and at lower pH (< 5)
than production of basic nickel carbonates. Alkaline bicarbonates are
also used instead of carbonates
- Nickel
hydroxycarbonate is mainly produced from either nickel sulphate or
nickel nitrate
- The major uses of
nickel carbonate described above result in the production of catalysts,
plated products and other nickel-containing chemicals. In these
processes nickel carbonate is converted into other nickel-containing
compounds. Nickel catalysts and many plated products are
recycled
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