Grid for fluidized bed apparatus

Claim 1

In a fluidized bed dryer for granulating particles having a chamber, means passing hot air upward within said chamber, and means introducing a feed into said dryer forming a fluidized bed therein, a product removal grid comprising, in combination, a perforated grid at the bottom of said chamber, said means passing hot air upward in said chamber passing the hot air through said grid, said grid having a central opening and being a flat cone sloping upward at an angle to the horizontal between 6* and 10* disposed about said central opening, scraper blades radially disposed on the upper surface of said grid, a product removal pipe extending downward from said central opening in said grid, a shaft extending upward through said product removal pipe and said central opening having said blades mounted thereon, and means rotating said shaft so that said blades scrape large particles from said grid to roll into said opening.