A procedure for the manufacture of pure lead oxides, starting from solid metal lead without fusion. (Machine-translation by Google Translate, not legally binding)

摘要

A process for the manufacture of pure lead oxides of solid metallic lead without melting is characterized in that the metallic lead comminuted into small particles preferably of irregular surfaces is subjected to a rotating drum at temperatures below its melting point by blowing said hot air constantly into said drum. Water vapor giving rise to the oxidation of the metal lead and facilitating the exit of the oxygen lacking gases in a constant way towards the complete conversion of pb into pbo (lead protoxide). (Machine-translation by Google Translate, not legally binding)