METHOD FOR PREVENTING ACCUMULATION OF METALS IN A CLOSED PULP BLEACHING PROCESS - Patent 0847460

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(11)

EP 0 847 460 A1

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(43)	Date of publication:
	17.06.1998 Bulletin 1998/25

(21)	Application number: 96929609.0

(22)	Date of filing: 09.08.1996

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International Patent Classification (IPC):

D21C 9/ 10^{( . )}

D21C 9/ 16^{( . )}

(86)	International application number:
	PCT/SE1996/000997

(87)	International publication number:
	WO 1997/008381 (06.03.1997 Gazette 1997/11)

(84)	Designated Contracting States:
	AT DE ES FI FR PT SE

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Priority:

30.08.1995 SE 19950003004

(71)	Applicant: SUNDS DEFIBRATOR INDUSTRIES AKTIEBOLAG
	851 94 Sundsvall (SE)

(72)	Inventors:
	GERMGARD, Ulf S-865 31 Alnö (SE) LINDQUIST, Jonas S-856 41 Sundsvall (SE)

(74)	Representative: Sundqvist, Hans
	Sunds Defibrator Industries Aktiebolag Patents Dept. Strandbergsgatan 61 112 51 Stockholm 112 51 Stockholm (SE)

(54)	METHOD FOR PREVENTING ACCUMULATION OF METALS IN A CLOSED PULP BLEACHING PROCESS