A procedure for the obtaining of di-oxisulphurous gases through staged production of materials containing tostable sulfur and arsenio in repelled layers, obtaining residues of prosthesting exposure from arsenio (Machine-translation by Google Translate, not legally binding)

摘要

Procedure for obtaining di-oxysulfide gases by step roasting of materials containing roasted sulfur and arsenic in swirling layers, obtaining roasting residues practically free of arsenic, especially pyrites, with oxygen or oxygen-containing gases, characterized by the oxygen required to the roasting is fed, in the different swirling layers as fresh gas, separately and independently from each other and because the roasting gas formed in the first swirling layer is extracted separately from the roasting gas formed in at least one swirling layer next. (Machine-translation by Google Translate, not legally binding)