Silver electrolysis device and process

Abstract

The invention provides an electrolytic cell which comprises a cell body. The interior of the cell body is provided with an anode conducting bar, a cathode conducting bar, insulation boards, an anode board, a cathode board, a liquid inlet, a liquid outlet and a drainage port. The liquid inlet and the liquid outlet are formed in the same side wall of the cell body. The liquid inlet is formed in the lower portion of the cell body. The liquid outlet is formed in the upper portion of the cell body. The bottom of the cell body is in a reverse cone shape and the drainage port is formed in the bottom of the cell body. By the adoption of the electrolytic cell, an electrolyte circulates in the manner that the electrolyte flows in from the lower portion and flows out from the upper portion, the electrolyte enters the cell body through the liquid inlet, passes through the anode board and the cathode board sequentially to the other side of the cell body and then flows out reversely, and the electrolyte flows back to the liquid outlet in the same side in a parabolic manner. Back flow can be formed through the large circulation amount, the remaining time of the electrolyte in the electrolytic cell is prolonged, movement of electrolyte ions can be improved, the concentration difference polarization of the electrolyte is reduced, electrolytic efficiency is high, and an electrolysis period can be shortened as well.

Description

technical field [0001] The invention relates to the technical field of metal electrolysis or electrowinning, in particular to a silver electrolysis device and process. Background technique [0002] Electrolytic refining is the main means of metal refining in the process of metal smelting, and it is also a final link of metal smelting. The advanced technology and equipment directly affect the quality of metal and the level of production capacity. In metals, the essence of silver electrolytic refining is an oxidation-reduction reaction. With crude silver as the anode, titanium silver or pure silver as the cathode, and silver nitrate as the electrolyte, the anode crude silver loses electrons continuously and is oxidized to The silver ions are dissolved and immersed in the electrolyte. At the same time, the silver ions in the solution continue to move towards the cathode under the action of the electric field. After reaching the cathode, they get electrons and are reduced to met...

AI Technical Summary

Problems solved by technology

Therefore, the electrolytic cells in the prior art are not only complex in structure and cumbersome to operate, but also the silver powder needs to be conveyed by conveyor belt or manually scraped silver, and the current density of electrolysis is also low, only 300-350A / m 2 , the electrolysis cycle is 48~72h

There are long production cycles, serious electrolyte pollution, short electrolyte use cycles, and low electrolysis efficiency

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