METHOD FOR THERMALLY REGENERATING SPENT ACID

摘要

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. Accordi ng 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.