| 摘要 |
992,984. Drying coal etc.; heating particulate material. HEAD, WRIGHTSON & CO. Ltd. Oct. 24, 1963 [Nov. 12, 1962], No. 42732/62. Headings F4G and F4U. In apparatus for drying or heating coal or like particulate matter, the material is discharged from a fluidized bed by overflowing it from the bed over one or more of a plurality of selectable portions, which together define substantially the full extent of the periphery of the bed. A fluidized bed a of raw coal is fed by a pipe 124 to a perforated support 1 which has imperforate sides 1<SP>1</SP> formed from suitable adjustable curved slats in order to adjust the height of selectable portions of the discharge lip 125 to allow either the coal to discharge over either a portion or substantially the whole extent of the lip. About the bed a the sides may have an annular external launder 126 to receive the discharged material, which launder may be subdivided by radial partitions 127 into compartments having individual outlets 129. Specifications 970,643, 970,644, 971,583 and 992,985 are referred to. |
