METHOD OF MAINTAINING AND TESTING FOR PROPER CONCENTRATIONS OF THIOUREA IN COPPER REFINING ELECTROLYSIS CELLS - Patent 0137776

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EP 0 137 776 A1

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(43)	Date of publication:
	24.04.1985 Bulletin 1985/17

(21)	Application number: 83901288.0

(22)	Date of filing: 28.02.1983

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International Patent Classification (IPC):

C22B 15/ 14^{( . )}
C25C 7/ 06^{( . )}

C25C 1/ 12^{( . )}

(86)	International application number:
	PCT/US1983/000298

(87)	International publication number:
	WO 1984/003307 (30.08.1984 Gazette 1984/21)

(84)	Designated Contracting States:
	AT BE DE FR GB SE

(71)	Applicant: ASARCO INCORPORATED
	New York New York (US)

(72)	Inventors:
	GOFFMAN, Martin Edison, NJ 08817 (US) JORDAN, Thomas, L. Amarillo, TX 79109 (US)

(74)	Representative: Baillie, Iain Cameron, et al
	c/o Ladas & Parry Altheimer Eck 2 D-80331 München D-80331 München (DE)

(54)	METHOD OF MAINTAINING AND TESTING FOR PROPER CONCENTRATIONS OF THIOUREA IN COPPER REFINING ELECTROLYSIS CELLS