(19)

(11)

EP 0 225 875 A1

(12)

(43) Date of publication: 24.06.1987 Bulletin 1987/26 (21) Application number: 85904025.0 (22) Date of filing: 09.08.1985

(51) International Patent Classification (IPC):  B01D 15/ 00( . ) C01G 5/ 00( . ) B01J 47/ 10( . ) (86) International application number: PCT/SE1985/000307 (87) International publication number: WO 1986/001127 (27.02.1986 Gazette 1986/05)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 10.08.1984 SE 19840004068 (71) Applicant: AB METALL- & BERGPRODUKTER S-175 77 Järfälla (SE)	(72) Inventor: LINDGREN, Östen S-840 12 Fränsta (SE)