METHOD FOR THERMALLY REGENERATING SPENT ACID

The present invention relates to a method for thermally regenerating spent acid, said spent acid being formed in connection with the scrubbing of sulfur dioxide bearing gases created in the pyrometallurgical production of metals. According to the method, the spent acid is concentrated and fed into t...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	HOLMI, JOHANNES, OJALA, JARI, POIJAERVI, JAAKKO, JALONEN, ANTTI
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	CHEMISTRY COMPOUNDS THEREOF INORGANIC CHEMISTRY METALLURGY NON-METALLIC ELEMENTS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION TRANSPORTING
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Beschreibung
Zusammenfassung:	The present invention relates to a method for thermally regenerating spent acid, said spent acid being formed in connection with the scrubbing of sulfur dioxide bearing gases created in the pyrometallurgical production of metals. According to the method, the spent acid is concentrated and fed into the gas space of a primary smelting furnace, so that the energy needed in the thermal regeneration of the spent acid is obtained from the heat content of the hot gases created in the smelting process.