Pb-0.05% Ca and Pb-0.2% Ag-0.2% Sb anodes were tested to highlight the feasibility of reduction of both energy consumption and capital costs in zinc electrowinning from sulphate solutions without any modifications to the existing plant. Long duration electrowinning tests, carried out on a laboratory pilot plant using ethylene glycol as anodic depolariser, showed that a Pb-0.05% Ca anode can represent a good alternative for zinc electrodeposition. Although the specific energy consumption is greater than that obtained with a Pb-0.8% Ag anode, the lower material costs amply compensate this.
New lead alloy anodes and organic depolariser utilization in zinc electrowinning / Lupi, Carla; Pilone, Daniela. - In: HYDROMETALLURGY. - ISSN 0304-386X. - STAMPA. - 44:3(1997), pp. 347-358. [10.1016/s0304-386x(96)00060-6]
New lead alloy anodes and organic depolariser utilization in zinc electrowinning
LUPI, Carla;PILONE, Daniela
1997
Abstract
Pb-0.05% Ca and Pb-0.2% Ag-0.2% Sb anodes were tested to highlight the feasibility of reduction of both energy consumption and capital costs in zinc electrowinning from sulphate solutions without any modifications to the existing plant. Long duration electrowinning tests, carried out on a laboratory pilot plant using ethylene glycol as anodic depolariser, showed that a Pb-0.05% Ca anode can represent a good alternative for zinc electrodeposition. Although the specific energy consumption is greater than that obtained with a Pb-0.8% Ag anode, the lower material costs amply compensate this.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
