Method and apparatus for removing arsenic, tin and antimony from crude lead.

摘要

A method and apparatus for removing arsenic, tin and antimony from lead bullion by means of industrial oxygen are described, the oxygen being introduced into a turbulent molten stream of lead, restricted to a limited volume and entering, mixed with lead, a larger volume of molten lead, in which the compounds, which are to be separated off, float in the form of the oxides and run out as dross into a crucible. The apparatus for carrying out the method comprises two cylinders, arranged one within the other, of different volume, which dip to different depths into the molten lead in the melting vessel, the lead stream in the smaller cylinder being generated by means of a lead pump and the industrial oxygen being introduced into this lead stream. IMAGE