Improvements in charging apparatus for vertical kilns for burning cement, lime and the like

摘要

327,679. Schwenk, E., [Firm of], and Hauenschild, A. Dec. 31, 1928. Extrusion machines.-In charging apparatus for shaft furnaces for burning cement, lime, and the like, of the kind in which the raw pasty material is pressed through a perforated plate so as to issue in the form of ropes which break off or are cut into short lengths, the extrusion is effected by one or more rollers. As shown, the apparatus comprises a rotary drum e to which the raw material is supplied from a mixer d and from the driving shaft of which the extruding roller g is freely suspended by rods h. The extruded material is distributed uniformlv within the furnace by a rotating shoot m. A modified form of press comprises an horizontal plate having perforations which may be disposed obliquely to the plane of the plate and two rollers secured by links to a central vertical shaft, the extrusion being effected by rotating the plate and/or .rollers about the central shaft. The broken or cut pieces may, before entering the furnace, be fed to a rotary drum in which they are rolled into balls.