Procedure for the obtaining of dioxidosulphide gases for the staged testing of materials containing tostable sulfur and antimony or antimony and arsenium in reinforced layers (Machine-translation by Google Translate, not legally binding)

摘要

Process for the production of dioxidesulfur dioxide gases by step roasting of materials containing toasted sulfur and antimony or antimony and arsenic, especially pyrites, with oxygen or oxygen gases in swirling layers in order to obtain roasting residues substantially free of antimony and arsenic, characterized because the oxygen necessary for roasting is introduced as fresh gas into the different swirling layers, separately for the previous roasting and subsequent roasting and the roasting gas formed in the first swirling layer is extracted separately from the roasting gas formed in the next a swirling layer that at least continues, the temperature being maintained in the different swirling layers at approximately 550 to 880º and this, in the first swirling layer preferably between 750 and 800º and in the next swirling layer, which must at least follow, preferably between 750 and 880º. (Machine-translation by Google Translate, not legally binding)