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    • 73. 发明专利
    • An Improved Rotary Roasting Furnace.
    • GB190812825A
    • 1909-04-15
    • GB190812825D
    • 1908-06-16
    • DOWN JOHN RICHARDMORGAN FREDERICK JOHN
    • DOWN JOHN RICHARDMORGAN FREDERICK JOHN
    • 12,825. Down, J. R., and Morgan, F. J. June Roasting furnaces; baffles.-An annular roasting-furnace with a rotary hearth is divided into two concentric chambers by a circular baffle depending from the roof. The hearth C is carried by a framework B supported on roller bearings D and rotated by a pinion E. Sand or like seals F, F at the sides prevent the escape of the hot gases and the entry of cold air. The roasting- chamber is divided into two parts by a baffle J extending from the roof nearly to the hearth, the inner chamber acting as a muffle for the preliminary heating of the materials, while the products of combustion from the furnaces pass through the outer chamber. Adjustable rabbles are fitted at a suitable point, and an extra rabble is provided to heap the materials against the baffle and thus prevent the entry of the products of combustion into the inner chamber. Swing doors are provided in the gap in which the rabbles are placed. The roof of the furnace may be constructed as shown or may be supported by a ring suspended from overhead girders. The central portion of the furnace may be used as a drying- floor.