US 8,771,620 B2 · Method for recycling lead from waste glass containing lead

Abstract

Disclosed is a method for recycling lead from waste glass containing lead, which comprises the following steps: mechanical crushing waste glass containing lead, ball milling and screening to obtain glass powder containing lead; alkaline roasting the glass powder containing lead to obtain a roasted material; mixing polycarboxylic acid complexant and nitric acid to produce leaching agent, and then placing the roasted material into the leaching agent to obtain leachate; regulating pH value of the leachate to solidify metal ion to obtain precipitate, separating and removing impurities, rinsing and drying to obtain chemical product containing lead. The method avoids environment pollution caused by waste glass containing lead.

Claims18

Dependent claims

A method for treating waste glass containing lead, comprising:

(1) providing glass containing lead, mechanically crushing, ball milling and sieving the glass containing lead to obtain glass containing lead powders;
(2) roasting the glass containing lead powders with alkaline liquor to obtain a roasted material;
(3) providing polycarboxylic acid complexing agent and nitric acid, mixing the polycarboxylic acid complexing agent and nitric acid to produce leaching agent, immersing the roasted material in the leaching agent to obtain leachate;
(4) regulating pH value of the leachate, precipitating metal ion to obtain precipitates, separating the precipitates and liquid from the leachate for removing impurities, rinsing and drying the precipitates to obtain chemical product containing lead.

1 more element

Dependencies are inferred from the claim text.

Method for recycling lead from waste glass containing lead

Life of this patent

Method for recycling lead from waste glass containing lead

Life of this patent

Abstract

Claims18