| 摘要 |
1310507 Sterilization of food-stuffs APV CO Ltd 18 May 1970 [28 May 1969] 27009/69 Heading A2D [Also in Division B8] An apparatus for heat treating particulate solid materials comprises a screw conveyor rotatable with minimum clearance in a cylinder rotatably mounted within a chamber having a gas inlet by which an atmosphere of hot gas can be maintained within the chamber, the cylinder being perforate to allow the hot gas atmosphere to be maintained in the cylinder, and means for rotating the cylinder in contrarotation to the screw-conveyor. A suitable apparatus is shown in Fig. 4, wherein particulate material is fed via inlet tube 3 to a cylinder 2 in which there is positioned a screw conveyor. This cylinder is driven by motor 30. The cylinder is provided with perforations to permit the ingress of a hot atmosphere, i.e. steam, and the egress of the heat treated particulate material into the outlet 7. |
