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PCE
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DIFF Subgroup
C01F 7/144

from aqueous aluminate solutions by precipitation due to cooling, e.g. as part of the Bayer process

Introduced: January 2022

Full Title

Full titles differ between systems:

IPC:

Compounds of aluminium > Aluminium oxide; Aluminium hydroxide; Aluminates > Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom > Aluminium oxide or hydroxide from alkali metal aluminates > from aqueous aluminate solutions by precipitation due to cooling, e.g. as part of the Bayer process

CPC:

Compounds of aluminium > Aluminium oxide; Aluminium hydroxide; Aluminates > Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom (C01F7/028 takes precedence) > Aluminium oxide or hydroxide from alkali metal aluminates > from aqueous aluminate solutions by precipitation due to cooling, e.g. as part of the Bayer process

IPC and CPC are identically structured here. All 3 subcodes exist in both systems.

IPC defines codes here since 2022.

Child Classifications

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  • C01F 7/145 characterised by the use of a crystal growth modifying agent other than aluminium hydroxide seed since 2022 IPC+CPC Available in IPC and CPC
  • C01F 7/147 Apparatus for precipitation since 2022 IPC+CPC Available in IPC and CPC
  • C01F 7/148 Separation of the obtained hydroxide, e.g. by filtration or dewatering since 2022 IPC+CPC Available in IPC and CPC