CPC Subgroup
C01F 7/10 by treating aluminous minerals with alkali sulfates and reducing agents
Full Title
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 with alkali sulfates and reducing agents