Study of precipitation hardening in lead calcium tin anodes for copper electrowinning

被引：12

作者：

Camurri, C. ^{[1
]}

Carrasco, C. ^{[1
]}

Prat, O. ^{[1
]}

Mangalaraja, R. ^{[1
]}

Pagliero, A. ^{[2
]}

Colas, R. ^{[3
]}

机构：

[1] Univ Concepcion, Dept Mat Engn, Concepcion, Chile

[2] Univ Concepcion, Dept Met, Concepcion, Chile

[3] Univ Autonoma Nueva Leon, Fac Ingn Mecan & Elect, Leon, Mexico

来源：

MATERIALS SCIENCE AND TECHNOLOGY | 2010年 / 26卷 / 02期

关键词：

Lead base anodes; Yield stress; Precipitation and deformation hardening; SYSTEM;

D O I：

10.1179/174328409X443245

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A suitable yield stress for Pb anodes with 0.07% Ca and 1.3% Sn of 6 mm thickness for copper electrowinning is achieved by means of deformation and precipitation hardening processes, their useful life being dependent on this yield stress. The objective of the present work was to optimise the precipitation hardening, by finding the best cooling conditions for the anodes in the moulds and the optimum hot rolling temperature. The results show that increasing the cooling rate of ingots beyond the rate of natural cooling enhances the precipitation hardening. At least 45 days of aging are necessary to reach stable conditions for the precipitation hardening, with precipitates formation as CaSn(3). The hot rolling temperature does not have a significant effect on the precipitation hardening of the anodes.

引用

页码：210 / 214

页数：5

共 14 条

[1]

BAQUE P, 1973, MISE FORME METAUX

[2] Optimal operational conditions during production of lead-calcium-tin anodes for improve their mechanical properties. [J].