Lead-cobalt anodes for electrowinning of zinc from sulphate electrolytes

被引：62

作者：

Rashkov, S

Dobrev, T ^{[1
]}

Noncheva, Z

Stefanov, Y

Rashkova, B

Petrova, M

机构：

[1] Bulgarian Acad Sci, Inst Phys Chem, BU-1113 Sofia, Bulgaria

[2] Bulgarian Acad Sci, Cent Lab Electrochem Power Sources, Sofia, Bulgaria

来源：

HYDROMETALLURGY | 1999年 / 52卷 / 03期

关键词：

lead-cobalt; zinc; sulphate;

D O I：

10.1016/S0304-386X(99)00005-5

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

A new anodic lead-cobalt (Pb-Co) 0.5-6% (by weight) material for electrowinning of zinc from sulphuric acid electrolytes has been obtained. The properties of Pb-Co alloys anodes, based on an entirely different principal were studied by means of electrochemical methods. The results obtained were compared with those from lead-silver (Pb-Ag) anodes with a 1% Ag content as used in industry. It is established that above 0.5% Co, the corrosion resistance of the new anodes is better and at Co content of 3% the anodic overpotential is about 0.08-0.1 V lower than that of Pb-Ag (1%) alloy. The anodic layer of the Pb-Co anodes-dense and tightly attached to the surface-consisted of beta-PbO2, MnO2 and PbSO4. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：223 / 230

页数：8

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