Intelligent source reduction complete technology method for high-lead anode mud heavy metal pollutants

Abstract

The invention relates to an intelligent source reduction complete technology method for high-lead anode mud heavy metal pollutants in the industry of hydrometallurgy. Three technologies including real-time online monitoring, film preparing optimal regulating and mud removing intelligent identifying are integrated into a whole. The intelligent source reduction complete technology method for the high-lead anode mud heavy metal pollutants comprises the steps that after a lead-based anode new plate or a film-broken old plate is subjected to surface pretreatment to meet the requirement for surface roughness, key parameters such as the concentration, the temperature and the volume of manganese, lead, acids, suspended particulate matters and other matters in an anode film preparing system are monitored online in real time; regulating technology parameter combination is optimized on the basis of real-time detected data through the film preparing optimal regulating technology, and a compact film layer structure and the best lead sealing effect are obtained; and the purpose of removing mud without damaging the film is achieved according to a film-mud layered structure through the mud removing intelligent identifying technology, and the film-broken plate can be intelligently identified and return to the film preparing system again. According to the intelligent source reduction complete technology method for the high-lead anode mud heavy metal pollutants, integrated intelligent control over real-time monitoring, film preparing regulating and damage-free mud removing is achieved, corrosion pollution of lead is inhibited from the source, and the generation amount of lead-containing wastewater and high-lead anode mud is significantly decreased.

Description

technical field [0001] This application relates to the field of reducing heavy metal pollution in the electrolysis section of the hydrometallurgical industry, in particular to a complete set of technical methods for reducing heavy metal pollutants from high-lead anode slime with intelligent sources. Background technique [0002] The electrolytic zinc, electrolytic manganese and other hydrometallurgical industries in my country generally use lead plates with a lead content of more than 99% for electrolysis. Each anode plate weighs hundreds of kilograms. Under high temperature and high acid electrolysis conditions, the anode lead rapidly dissolves in an ion state In the electrolyte, a large amount of high-lead anode slime is produced, resulting in a large amount of high-concentration heavy metal water pollution and a type of hazardous waste. More than 400,000 tons of high-lead (20%) anode slime and lead-containing acid leaching residues are as high as 700 tons per year. More tha...

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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