The invention relates to a closed-type electro-winning
cell. The common electro-winning
system is an open glass reinforced plastic
cell body. As for the open glass reinforced plastic
cell body, gases generated by an
electrolyte during
electrolysis are easy to volatilize; and the spaces between cathodes and anodes are unequal, and the
electrolyte does not flow smoothly, so that the metals deposited at the cathodes are uneven in thickness, and easy to be bent, the
concentration polarization is severe, the content of the
metal impurities generated by the cathodes is large, and the
electrical efficiency is not high. A closed-type structure and a parallel-connected
electrolyte floating way are adopted for the closed-type electro-winning cell to guarantee the chemical components of the electrolyte flowing into each electro-winning room to be same as those of the overall inlet liquid of the electro-winning cell, and the
concentration polarization is eliminated during the
electrolysis process by
combing the
metal ion concentration of the electrolyte and
current density to improve the velocity of flow of the electrolyte. The closed-type electro-winning cell can simply and effectively eliminate the emission of toxic or harmful gases during
electrolysis, and can prevent a corrosive electrolyte from volatilizing, and can effectively reduce
impurity contents of electro-winning products, greatly improve
electric efficiency, and reduce the gas-
liquid interface corrosion on the anodes caused by air bubbles.