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DIFF Subgroup
C01F 7/0646

Separation of the insoluble residue, e.g. of red mud

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 > by treating aluminous minerals or waste-like raw materials with alkali hydroxide, e.g. leaching of bauxite according to the Bayer process > Separation of the insoluble residue, e.g. of red mud

CPC:

Compounds of aluminium > Aluminium oxide; Aluminium hydroxide; Aluminates > Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom (C01F7/028 takes precedence) > by treating aluminous minerals or waste-like raw materials with alkali hydroxide, e.g. leaching of bauxite according to the Bayer process (obtaining aluminium oxide or hydroxide from the resulting aluminate solution C01F7/14) > Separation of the insoluble residue, e.g. of red mud

IPC and CPC are identically structured here. All 1 subcodes exist in both systems.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 2022.

Child Classifications

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  • C01F 7/0653 characterised by the flocculant added to the slurry (final clarification of the aluminate solution C01F7/47) since 2022 IPC+CPC Available in IPC and CPC