Silver electrolysis process and equipment

Abstract

The invention relates to an silver electrolysis process and equipment and belongs to the technical field of silver electrolysis recovery. The silver electrolysis process comprises the following process steps: S1, blowing and smelting silver slag material in a converter to form alloy gold; S2, granulating and drying the alloy gold prepared in S1 to pellet so as to obtain granular alloy gold; S3, adding the granular alloy gold obtained in S2 in a residual anode free electrolytic cell for silver electrolysis, and filtering and collecting silver powder separated out at the cathode of the electrolytic cell; S4, washing the silver powder collected in S3, and drying to obtain clean silver powder; and S5, carrying out ingot casting on the clean silver powder obtained in S4 to obtain silver ingots.The silver electrolysis process has the effect of not generating the residual anode during the silver electrolysis process.

Description

technical field [0001] The invention relates to the technical field of silver electrolysis recovery, in particular to a silver electrolysis process and equipment. Background technique [0002] Blister copper refining by electrolytic method is currently the most commonly used method for refining blister copper. In the process of electrolytic refining, blister copper is on the electrolytic anode. When the power is turned on, the anode undergoes an oxidation reaction, thereby causing the metal to lose electrons. However, since the electron loss ability of copper is stronger than that of silver, and the composition of copper in blister copper is much more than that of silver, silver still exists as a solid when copper is continuously oxidized into copper ions. After consumption, the solid silver loses its support and attachment, and will sink under the action of gravity, thus becoming anode slime together with other components. [0003] Since the anode slime contains a lot of p...

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Problems solved by technology

However, since the anode plate will not be completely immersed in the electrolyte, as the silver electrolysis proceeds, the anode plate immersed in the electrolyte gradually becomes smaller, and when the anode plate immersed in the electrolyte is finally completely electrolyzed, it is not immersed in the electrolyte The anode plate becomes a residual electrode, and the workers need to remove the residual electrode and recast it together with other residual electrodes to form a new anode plate. It is also high, and the process of re-casting the anode plate consumes a lot of power and increases the production cost. Therefore, a silver electrolysis process with no anode residue and supporting equipment is required.

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