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Publication of DD100798A5publicationCriticalpatent/DD100798A5/xx
F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
F27B9/04—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity adapted for treating the charge in vacuum or special atmosphere
F27B9/045—Furnaces with controlled atmosphere
F27B9/047—Furnaces with controlled atmosphere the atmosphere consisting of protective gases