A complete set of technical methods for intelligent source reduction of heavy metal pollutants in high-lead anode slime

Abstract

The invention relates to a complete technical method for reducing high-lead anode slime heavy metal pollutants intelligently sourced in hydrometallurgy industry, which integrates three technologies of real-time on-line monitoring, optimal control of film production and intelligent identification of mud removal. In the present invention, after the surface pretreatment of the lead-based anode new plate or the broken membrane boss meets the requirements of surface roughness, the concentration, temperature, volume, etc. Key parameters, optimal control technology for film production Based on real-time monitoring data to optimize and control the combination of process parameters, obtain a dense film structure and the best lead sealing effect, intelligent recognition technology for deslagging, realize descaling without damaging the film according to the layered structure of the film mud, And intelligently identify the membrane rupture plate and return it to the membrane production system. Realize real-time monitoring, film production control, and non-destructive sludge removal integrated intelligent control, suppress lead corrosion pollution from the source, and greatly reduce the production of lead-containing wastewater and high-lead anode slime.

Description

technical field [0001] The application relates to the field of reducing heavy metal pollution in electrolysis sections of hydrometallurgy industry, and in particular to a complete set of technical methods for reducing intelligent sources of heavy metal pollutants in high-lead anode slimes. Background technique [0002] my country's electrolytic zinc, electrolytic manganese and other hydrometallurgical industries generally use lead plates with a lead content of more than 99% for electrolysis. Each anode plate weighs hundreds of kilograms. Under the conditions of high temperature and high acid electrolysis, the anode lead quickly dissolves in an ionic state. In the electrolyte, a large amount of high-lead anode sludge is produced, resulting in a large amount of high-concentration heavy metal water pollution and the generation of a class of hazardous wastes. The annual production of high-lead (20%) anode sludge is more than 400,000 tons, and lead-containing acid leaching residues...

AI Technical Summary

Problems solved by technology

[0004] The electrolysis process of my country's electrolytic zinc and manganese industry generally adopts the method of manual scraping of anode slime. Since the thickness of the lead-based film layer and anode slime and the change of lead elements cannot be accurately identified, the lead-based interface is continuously exposed during the scraping process, and the lead is dissolved during the electrolysis process. The effect occurs repeatedly, the concentration of lead ions in the electrolyte system increases, the anode slime increases greatly, and the lead content in the product increases, which affects product quality and reduces the production efficiency of the enterprise

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