Process for refining antimony-containing lead melts with supply of oxygen-enriched air

摘要

A process for refining antimony-containing lead melts is characterised in that the air supplied is enriched with oxygen. The conventional lead-refining processes have an upper output limit which is given essentially by the surface area of the ovens or vessels. The limit can be exceeded by adding oxygen to the blowing air. The conditions which allow risk-free and economical introduction of the oxygen are defined. Using oxygen, lead-refining in the vessel can compete with the existing large plants.