Abstract: The present invention relates to a process for purifying metallurgical gases containing sulphuric anhydride by extracting mercury, using the sulphurous anhydride which accompanies the metallurgical gases as an oxidizing agent for the mercury, an additional contribution of sulphurous anhydride being made when the latter is deficient, and employing in addition an acid to facilitate the oxidization of the mercury and a soluble thiocyanate in order to complete the oxidation of the mercury.
Type:
Grant
Filed:
December 10, 1973
Date of Patent:
August 10, 1976
Assignee:
Patronato de Investigacion Cientifica y Tecnica "Juan de la Cierva" del Consejo Superior de Investigaciones Cientificas
Inventors:
Antonio de la Cuadra Herrera, Miguel Fernandez Tallante, Armando Rodriguez Sanchez