Method and device for continuous electrolysis of lead solution for hydraulic unloading of lead

Abstract

The invention discloses a method for lead solution continuous electrolysis of hydraulic power lead discharging and a device for implementing the method and belongs to the field of electrolytic refining of lead. Continuous electrolysis is performed on a lead solution, specifically, the lead solution is continuously conveyed into an electrolytic bath, lead obtained through electrolysis is continuously conveyed out of the electrolytic bath, electrolyte in the electrolytic bath circularly flows through a pump, and lead is separated out at a negative electrode, flushed through the flowing electrolyte to drop to the bottom of the electrolytic bath and then conveyed into a lead collecting tank through a spiral part. The device comprises the electrolytic bath and electrolytic electrode plates, wherein the electrolytic electrode plates are rectangular; both the negative electrode plate and the positive electrode plate are fixed; baffles are disposed on the two sides of the negative electrode plate; the electrolytic bath is externally connected with the circulating pump which makes the electrolyte in the electrolytic bath to circularly flow; and the bottom of the electrolytic bath is conical and is connected with the lead collecting tank through the spiral part. According to the method and the device, continuous feeding and continuous discharging are achieved in the lead solution electrolysis process, maintenance is convenient, the electrolyte circularly flows to achieve complete homogenization, the lead concentration gradient of the electrolyte is reduced, and the electrolytic efficiency is improved.

Description

technical field [0001] The invention relates to a method and device for continuous electrolysis of lead solution for hydraulic unloading of lead, belonging to the field of electrolytic refining of lead, in particular to the field of wet electrolytic refining of waste lead-acid batteries and waste lead plaster resources. Background technique [0002] Electrolysis is the main process of lead refining. At present, the industry generally adopts tank electrolysis. Usually, concrete lining PVC, PE, etc. are used as the electrolytic cell body, crude lead and refined lead are used as electrodes, and the refined lead precipitated from the cathode is melted and cast into refined lead lead ingots. , such an electrolysis method has a large processing capacity, but the volume of the electrolytic cell is large, and the volume and quality of the lead plates obtained by the electrodes are large, and there are many inconveniences in intermittent lifting, especially not suitable for small and ...

AI Technical Summary

Problems solved by technology

The lead-containing material lead paste obtained by mechanical crushing and sorting of waste lead-acid batteries is currently used in the process of "wet desulfurization conversion + low-temperature smelting" or blending with raw ore lead for smelting. Both processes focus on smelting unit, and the obtained crude lead still needs to be electrolytically refined, and then the lead can be recycled to the lead application industry chain. The process route is long and the processing cost is high.

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