C - Chemistry – Metallurgy – 21 – B
Patent
C - Chemistry, Metallurgy
21
B
C21B 3/08 (2006.01)
Patent
CA 2539601
Disclosed is a method for granulating slag, especially from a blast furnace and/or a smelting reduction system. According to said method, a mixture of granulate and water obtained during the granulation process is delivered to a granulating container (4) and then to a dehydration system in which the granular slag is dehydrated while the vapors and gases that are created during the granulation process and contain H2S are at least partly condensed in a condensing chamber which is fluidically connected to the granulating container (4) by spraying water thereinto. Residual gases containing H2S are withdrawn from the condensing chamber below the point where water is sprayed in, and H2S is burned.
La présente invention concerne un procédé pour granuler des scories, notamment des scories provenant d'un haut fourneau et/ou d'une installation de réduction par fusion. Selon cette invention, un mélange granulés-eau formé lors de la granulation est transféré vers un récipient de granulation (4), puis vers une installation de déshydratation dans laquelle les granulés de scorie sont déshydratés, les vapeurs et les gaz contenant H¿2?S, qui apparaissent lors de la granulation, sont au moins partiellement condensés, grâce à une injection d'eau, dans une chambre de condensation qui est en communication fluidique avec le récipient de granulation (4), puis les gaz résiduels contenant H¿2?S sont évacués de la chambre de condensation après l'injection d'eau et H¿2?S est brûlé.
Siemens Vai Metals Technologies Gmbh
Smart & Biggar
Voest-Alpine Industrieanlagenbau Gmbh & Co
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