METHOD OF REGENERATION OF THE STANNOUS FROM THE TIN-PLATE WASTES Russian patent published in 2007 - IPC C25C1/14 C22B25/06 

FIELD: chemical industry; hydrometallurgy; methods of the stannous regeneration from the tin-plate wastes.

SUBSTANCE: the invention is pertaining to the field of the applied electrochemistry, in particular to hydrometallurgy, and is intended to improve the production engineering of the regeneration and utilization of stannous from the tin-plate wastes. The method presents the method of the stannous regeneration, in which the process of the wastes detinplating is conducted first electrolytically dissolving them in the stannous electrolyte, and then by the chemical dissolution in the water solution of the sodium hydroxide. The invention allows to reduce the concentration of the stannous in the electrolyte to 3-6 g/l and to reduce the stannous mass drag-out together with the detinning of the tin-plate wastes into the atmosphere at 7-14 times and ensures production of the compact stannic sediments on the cathode and to reduce the power input.

EFFECT: the invention ensures: reduction of the concentration of the stannous in the electrolyte to 3-6 g/l; reduction of the stannous mass drag-out together with the detinning of the tin-plate wastes into the atmosphere at 7-14 times; production of the compact stannic sediments on the cathode and reduction of the power input.

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