Procedure for the obtaining of dioxidosulphide gases through 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

Improvements introduced in the object of the main patent no. 230.290, presented on august 9, 1956, on procedure for obtaining sulfur dioxide gases by roasting for the staggered obtaining of materials containing toasted sulfur and antimony or antimony and arsenic in layers swirling with oxygen or oxygen gases, obtaining roasting residues practically free of antimony and arsenic, feeding the oxygen necessary for roasting separately and independently to the different swirling layers for the previous roasting and subsequent roasting and evacuating the roasting gas formed in the first layer swirled separately from the roasting gas which is formed in the at least one swirling layer, which is still next, characterized, because during the roasting of pyrites in the first swirling layer the air and pyrite are fed in such a proportion, which is obtained a roasting gas with a content of apr approximately 20% by volume of sulfur dioxide and previously roasted material that in addition to the gangue is composed of ferro sulfur or ferro sulfide and ferric disulfide. (Machine-translation by Google Translate, not legally binding)