Global Patent Index - EP 0693040 A1

EP 0693040 A1 19960124 - METHOD OF PURIFYING SOLUIONS CONTAINING ALKALI-METAL ALUMINATES

Title (en)

METHOD OF PURIFYING SOLUIONS CONTAINING ALKALI-METAL ALUMINATES

Title (de)

VERFAHREN ZUR REINIGUNG VON ALKALIALUMINATENTHALTENDEN LÖSUNGEN

Title (fr)

PROCEDE D'EPURATION DE SOLUTIONS CONTENANT DES ALUMINATES ALCALINS

Publication

EP 0693040 A1 19960124 (DE)

Application

EP 94916913 A 19940407

Priority

  • DE 4311716 A 19930408
  • EP 9401081 W 19940407

Abstract (en)

[origin: WO9424050A2] The invention concerns a multi-stage method for the purification of the alkali-metal aluminate solutions arising as wastes in the aluminium processing industry, as well as the processing of solid aluminium-containing residues to give purified alkali-metal aluminate solutions or solid alkali-metal aluminates.

IPC 1-7

C01F 7/47

IPC 8 full level

C01F 7/04 (2022.01); C01F 7/47 (2022.01); C23G 1/36 (2006.01)

CPC (source: EP)

C01F 7/04 (2013.01); C01F 7/47 (2013.01); C23G 1/36 (2013.01)

Citation (examination)

LAMPMAN S.R.; REIDENBACH F.: "ASM Handbook", vol. 5, 1994, ASM INTERNATIONAL (US), pages: 793 - 794

Designated contracting state (EPC)

AT BE CH DE DK ES FR GB IT LI LU NL

DOCDB simple family (publication)

WO 9424050 A2 19941027; WO 9424050 A3 19941208; CZ 261395 A3 19960515; CZ 290971 B6 20021113; DE 4311716 C1 19941124; EP 0693040 A1 19960124; PL 310826 A1 19960108; SK 125995 A3 19960207; SK 283913 B6 20040504

DOCDB simple family (application)

EP 9401081 W 19940407; CZ 261395 A 19940407; DE 4311716 A 19930408; EP 94916913 A 19940407; PL 31082694 A 19940407; SK 125995 A 19940407