EP 0717783 A4 19970423 - UPGRADING TITANIFEROUS MATERIALS

Title (en)

UPGRADING TITANIFEROUS MATERIALS

Title (de)

VEREDELN VON TITANHALTIGEM MATERIAL

Title (fr)

ENNOBLISSEMENT DE MATERIAUX TITANIFERES

Publication

EP 0717783 A4 19970423 (EN)

Application

EP 94926722 A 19940907

Priority

AU 9400528 W 19940907
AU PM105193 A 19930907

Abstract (en)

[origin: WO9507366A1] A process for upgrading a titaniferous material by removal of impurities from the titaniferous material is disclosed. The process comprises alternate leaching of the titaniferous material in a caustic leach and a pressure sulphuric acid leach.

IPC 1-7

C22B 3/04; C22B 34/12; C01G 23/04; C01G 23/047

IPC 8 full level

C22B 3/04 (2006.01); C22B 3/00 (2006.01); C22B 34/12 (2006.01)

CPC (source: EP)

C22B 3/00 (2013.01); C22B 34/125 (2013.01); C22B 34/1254 (2013.01); Y02P 10/20 (2015.11)

Citation (search report)

[Y] GB 711833 A 19540714 - NAT TITANIUM PIGMENTS LTD, et al
[Y] EP 0460319 A1 19911211 - QIT FER TITANE INC [CA]
[A] DE 276025 C
[A] WO 9113180 A1 19910905 - WIMMERA IND MINERALS PTY LTD [AU]
[A] E. GOCK, K.-H. JACOB: "Direkter Aufschluss von Rutil mit Schwefelsäure", ERZMETALL, STUTGART, DE, vol. 33, no. 6, June 1980 (1980-06-01), pages 308 - 314, XP002025565
See also references of WO 9507366A1

Designated contracting state (EPC)

AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family (publication)

WO 9507366 A1 19950316; CA 2171185 A1 19950316; CN 1042349 C 19990303; CN 1134730 A 19961030; EP 0717783 A1 19960626; EP 0717783 A4 19970423; JP H09504828 A 19970513; NO 317932 B1 20050110; NO 960917 D0 19960306; NO 960917 L 19960425; ZA 946864 B 19950904

DOCDB simple family (application)

AU 9400528 W 19940907; CA 2171185 A 19940907; CN 94194061 A 19940907; EP 94926722 A 19940907; JP 50835895 A 19940907; NO 960917 A 19960306; ZA 946864 A 19940907