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)

Introduced: September 1968

Title

Titles differ between systems:

IPC: by treating aluminous minerals or waste-like raw materials with alkali hydroxide, e.g. leaching of bauxite according to the Bayer process

CPC: 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)

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

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)

IPC and CPC are identically structured here. All 10 subcodes exist in both systems.

IPC defines codes here since 2022.

Child Classifications

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C01F 7/0606 Making-up the alkali hydroxide solution from recycled spent liquor since 2022 IPC+CPC Available in IPC and CPC
C01F 7/0613 Pretreatment of the minerals, e.g. grinding since 2022 IPC+CPC Available in IPC and CPC
C01F 7/062 Digestion since 2022 IPC+CPC Available in IPC and CPC
C01F 7/0646 Separation of the insoluble residue, e.g. of red mud since 2022 IPC+CPC Available in IPC and CPC
C01F 7/066 Treatment of the separated residue since 2022 IPC+CPC Available in IPC and CPC
C01F 7/0666 Process control or regulation since 2022 IPC+CPC Available in IPC and CPC
C01F 7/0673 from phosphate-containing minerals since 2022 IPC+CPC Available in IPC and CPC
C01F 7/068 from carbonate-containing minerals, e.g. dawsonite since 2022 IPC+CPC Available in IPC and CPC
C01F 7/0686 from sulfate-containing minerals, e.g. alunite since 2022 IPC+CPC Available in IPC and CPC
C01F 7/0693 from waste-like raw materials, e.g. fly ash or Bayer calcination dust since 2022 IPC+CPC Available in IPC and CPC