Process to take advantage of fine grain roasting ashes, especially those derived from pyrites benefited by floating by leaching of noble and non-ferrous metals and subsequent cutting by mixing with residue and/or solid fuel and sintering on the sintering band which is characterized by the mixing of the ashes fine grain with sinter band return and/or solid fuel necessary for sintering is done before leaching and leaching is carried out according to the well-known infiltration leach principle for coarse-grained ash. (Machine-translation by Google Translate, not legally binding)
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