Title (en)

BAUXITE TREATMENT

Title (de)

BEHANDLUNG VON BAUXIT

Title (fr)

TRAITEMENT DE LA BAUXITE

Publication

EP 0880468 A1 19981202 (EN)

Application

EP 97902108 A 19970211

Priority

• AU 9700074 W 19970211
• AU PN808296 A 19960215

Abstract (en)

[origin: WO9729993A1] Prior to the digestion of bauxite (which contains silica) in a digestion solution such as caustic soda for the production of aluminium oxide, the bauxite is mechanically activated to induce a mechanochemical reaction in the presence of a reagent such as lime. At least a portion of the silica is rendered insoluble and unreactive to the formation of sodium-aluminium-silicate desilication product (DSP) during subsequent digestion of the bauxite in the digestion solution.

IPC 1-7

C01F 7/06

IPC 8 full level

C01F 7/0613 (2022.01)

CPC (source: EP)

C01F 7/0613 (2013.01)

Designated contracting state (EPC)

DE ES FR GB GR IE IT

DOCDB simple family (publication)

WO 9729993 A1 19970821; AU PN808296 A0 19960307; BR 9707543 A 20000104; EP 0880468 A1 19981202; EP 0880468 A4 19990512

DOCDB simple family (application)

AU 9700074 W 19970211; AU PN808296 A 19960215; BR 9707543 A 19970211; EP 97902108 A 19970211