(19)

(11)

EP 0 693 960 A1

(12)

(43) Date of publication: 31.01.1996 Bulletin 1996/05 (21) Application number: 95907783.0 (22) Date of filing: 13.02.1995

(51) International Patent Classification (IPC):  B01D 53/ 40( . ) B01D 53/ 77( . ) B01D 53/ 14( . ) (86) International application number: PCT/GB1995/000284 (87) International publication number: WO 1995/021682 (17.08.1995 Gazette 1995/35)

(84) Designated Contracting States: DE FR GB SE (30) Priority: 15.02.1994 GB 19940002886 (71) Applicant: British Nuclear Fuels PLC Risley Warrington Cheshire, WA3 6AS (GB)	(72) Inventors: ROBINSON, Peter, John, British Nuclear Fuels plc Salwick Preston PR4 0XJ (GB) FILSON, Arthur, Cole, British Nuclear Fuels plc Salwick Preston PR4 0XJ (GB)