PURIFICATION PROCESS FOR SPENT PICKLING BATHS - Patent 0035515

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EP 0 035 515 A1

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(43)	Date of publication:
	16.09.1981 Bulletin 1981/37

(21)	Application number: 80901669.0

(22)	Date of filing: 04.09.1980

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International Patent Classification (IPC):

B01J 41/ 04^{( . )}
C23G 1/ 36^{( . )}

C23C 2/ 30^{( . )}

(86)	International application number:
	PCT/SE1980/000220

(87)	International publication number:
	WO 1981/000728 (19.03.1981 Gazette 1981/07)

(84)	Designated Contracting States:
	DE FR NL

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Priority:

13.09.1979 SE 19790007619

(71)	Applicant: RENNERFELT, Lars Ivar
	S-115 22 Stockholm (SE)

(72)	Inventors:
	RENNERFELT, Lars Ivar S-115 22 Stockholm (SE) BÄCKLUND, Lars Yngve S-161 55 Bromma (SE)

(74)	Representative: Nilsson, Nils Erik, et al
	Albihn Holmqvist AB, Box 3137 S-103 62 Stockholm S-103 62 Stockholm (SE)

(54)	PURIFICATION PROCESS FOR SPENT PICKLING BATHS