US 7,553,111 B2
	Fluidizing gravity conveyor with high temperature multi-layered fluid distributor member
John S. Salmento, Nazareth, Pa. (US); Raymond M. Burynski, Jr., New Hartford, N.Y. (US); and James R. Schrantz, Northampton, Pa. (US)
Assigned to FLSmidth A/S, Valby (Denmark)
Filed on Jun. 28, 2007, as Appl. No. 11/824,172.
Prior Publication US 2009/0003942 A1, Jan. 01, 2009
Int. Cl. B65G 53/38 (2006.01)

U.S. Cl. 406—90  [406/88; 406/89; 406/138]

18 Claims

13. A multi-layered air distributor for distributing ambient air into a chamber containing high temperature finely divided dry material at a flow rate capable of fluidizing material within said chamber, said distributor comprising (i) an upper layer having a substantially smooth top side and comprising an air permeable, porous medium capable of withstanding temperatures up to about 2900°; (ii) a middle layer having a top side adjacent to the upper layer and a bottom side, said middle layer comprised of an air permeable insulation material that maintains its physical integrity when exposed to temperature differentials up to about 2900° F. between its upper side and its bottom side; and (iii) a lower layer adjacent to the bottom side of the middle layer for supporting the top and middle layers, said lower layer comprising a substantially flat plate having a plurality of openings therethrough through which said ambient air can pass.