Method for preparing barium plumbate powder by coprecipitation of copper anode mud silver separating residue of circuit board

Abstract

The invention belongs to the field of resource reuse, and relates to a high-valued reuse method for copper anode mud silver separating residues of circuit boards, especially relates to the preparation of barium plumbate powder by using copper anode mud silver separating residues of circuit boards as raw materials by means of coprecipitation. The method comprises the following steps: carbonating the copper anode mud silver separating residues of circuit boards through a sodium carbonate solution, filtering to obtain carbonation reaction residues and a post-carbonated-reaction solution; neutralizing the post-carbonated-reaction solution to neutral with sulfuric acid, evaporating and crystallizing the solution to recycle the sodium carbonate; dissolving the carbonated-reaction residue with an acetum and filtering the solution to obtain a deleaded residue and a lead acetate solution; adding barium acetate to the lead acetate solution, uniformly mixing and dropwise adding an oxalic acid solution; filtering the solution to obtain a barium plumbate ceramic powder precursor and a post-oxalic acid precipitation solution; roasting the barium plumbate ceramic powder precursor to obtain the barium plumbate ceramic powder. Compared with prior art, the method is characterized by no secondary pollution, and high-valued reuse of a lead secondary resource, and the method is suitable for industrial production.

Description

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AI Technical Summary

Benefits of technology

This new technology allows us to extract valuable metals from waste materials like batteries or electronic components without causing environmental concerns during their disposal process. It also includes methods that can produce highly pure metal while reducing harmful chemicals used in processing them.

Problems solved by technology

This patented describes methods for efficiently reusing electronic components containing metal scraps that contain significant amounts of impurity values like tin, arsenic, zinc, etc., while minimizing environmental impact caused through disposal processes. These techniques involve separating these scrap into pure metallizable constituents called solids before further processing them separately.

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