| 摘要 |
PURPOSE:To increase the rate of cooling of a hot metallic body when the metallic body is rapidly cooled in a fluidized bed, by specifying the particle size of solid particles and expansion ratio. CONSTITUTION:Solid particles 5 are charged into a vessel 6 and a fluidizing gas 7 is introduced into the vessel 6 through an introduction pipe 1, a wind box 2, and a dispersion plate 3 to fluidize the particles 5. A hot metallic body 4 is put in the resulting fluidized bed and cooled. In this cooling method, the average particle size of the particles 5 is regulated to <=100mum and expansion ratio calculated by dividing the height of the fluidized bed by the height of a fixed bed is regulated to >=1.5. The height of the fluidized bed is the height of a layer of the particles 5 fluidized with the gas 7, and the height of the fixed bed is the height of a layer of the particles 5 not fluidized with the gas 7.
|
