(19)

(11)

EP 0 573 626 A1

(12)

(43) Date of publication: 15.12.1993 Bulletin 1993/50 (21) Application number: 92924495.0 (22) Date of filing: 02.12.1992

(51) International Patent Classification (IPC):  B01F 3/ 04( . ) B01F 5/ 04( . ) C02F 3/ 14( . ) B01F 7/ 00( . ) B01F 3/ 08( . ) B01F 5/ 10( . ) C02F 3/ 22( . ) (86) International application number: PCT/AU1992/000645 (87) International publication number: WO 1993/010890 (10.06.1993 Gazette 1993/14)

(84) Designated Contracting States: AT BE DE DK ES FR GB SE (30) Priority: 02.12.1991 AU 19910000097 (71) Applicant: TECHNOLOGICAL RESOURCES PTY. LTD. Melbourne, VIC 3001 (AU)	(72) Inventors: BATTERHAM, Robin, John Sandringham, VIC 3198 (AU) HOFFMANN, Warwick Arthur Ivanhoe, VIC 3079 (AU) KATSIKAROUS, Nicholas Heidelberg, VIC 3084 (AU) (74) Representative: Kador & Partner  Corneliusstrasse 15 D-80469 München D-80469 München (DE)