FIELD: metallurgy. SUBSTANCE: foundation or hearth with formation of fluidized bed has metal supporting plate through which nozzles hot gas is injected to fluidize bed. Plate is fitted with coat of refractory material, plate itself is made from refractory material too and its coat is formed by collection of flat protective members also made from refractory material and completely covering supporting plate. Each flat protective member is attached to supporting plate with the use of weld in some localized zone of point character. EFFECT: enhanced resistance to thermal and mechanical erosion, to thermal shocks and temperature drops. 6 cl, 5 dwg
