Insoluble anode technology for tinpiate production

摘要

Tenova has developed a new tin dissolution process based on the technology of insoluble anodes. The application of the Tenova Insoluble Anode Technology minimizes the amount of sludge produced and hence the loss of tin. Main benefits are improved coating quality, better process control and elimination of phenol vapours in the working environment. The process is based on the oxidation of metallic tin granules by the tinning electrolyte flowing in a dissolution reactor. The electrolyte is then saturated with pure oxygen. The article describes the very satisfactory results reached in tinpiate produced with insoluble anodes.