A procedure to obtain, from the sulfured minerals or waste containing lead, soluble leads or derived from the same obtained by precipitation (Machine-translation by Google Translate, not legally binding)

摘要

A method for obtaining from the sulfur-containing minerals or residues containing lead, soluble salts of lead or derivatives thereof obtained by precipitation, characterized by submitting galenas or plumbiferous blenders or sulfur-containing residues containing lead, to a sulfating roasting in an oven and then they are crushed, leaching by diluted sulfuric acid and filtering, then attacking by sodium carbonate, washing and filtering again and dissolving the carbonates formed by nitric or acetic acid to obtain the corresponding soluble salts of lead contained in the solution that is separated by filtration of the sterile residues. These salts are crystallized or the lead is precipitated from its solution in the state of oxides carbonates, chromates, stearates, resinates, etc., by adding alkaline or alkaline-earth hydroxides, carbon dioxide, potassium dichromate, stearates or alkaline resinates. (Machine-translation by Google Translate, not legally binding)