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Titolo:
The influence of tartrate on cobalt cementation on a rotating zinc disc inzinc sulphate
Autore:
Bockman, O; Ostvold, T;
Indirizzi:
Norwegian Univ Sci & Technol, Dept Inorgan Chem, N-7491 Trondheim, Norway Norwegian Univ Sci & Technol Trondheim Norway N-7491 1 Trondheim, Norway
Titolo Testata:
HYDROMETALLURGY
fascicolo: 1, volume: 55, anno: 2000,
pagine: 107 - 112
SICI:
0304-386X(200002)55:1<107:TIOTOC>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Keywords:
tartrate; zinc sulphate; electrolysis;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
8
Recensione:
Indirizzi per estratti:
Indirizzo: Ostvold, T Norwegian Univ Sci & Technol, Dept Inorgan Chem, N-7491 Trondheim, Norway Norwegian Univ Sci & Technol Trondheim Norway N-7491 , Norway
Citazione:
O. Bockman e T. Ostvold, "The influence of tartrate on cobalt cementation on a rotating zinc disc inzinc sulphate", HYDROMETALL, 55(1), 2000, pp. 107-112

Abstract

Basic cobalt salts redissolve more easily than Co alloys; this is the major reason for cobalt redissolution during the technical purification of the zinc sulphate electrolyte before zinc electrolysis. The electrolysis is performed using a very pure zinc sulphate solution. Co2+ is a harmful impurityin the electrolyte, and is therefore usually removed by cementation. This cementation process is very slow. Cu2+ and Sb3+, which are used as cementation aids, are added as CuSO4 and potassium-antimony-tartrate, KSbC4O6H2. 1.5H(2)O, respectively. Laboratory scale experiments show that large amounts of tartrate in the solution reduce the cementation rate of Co2+ significantly. Accumulation of tartrate may cause operational problems in a zinc plant, (C) 2000 Elsevier Science B.V, All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/12/20 alle ore 02:30:06