This device is located at the bottom of material silo. It connects purified and heated compressed air while discharging, so as to fluidize materials, increase their mobility and contribute to smooth discharging. The gasification plate of this device is made from sintered silicon carbide particles, thus it possesses good air permeability and wear resistance. The chute is oxidation resistant due to its pickled and galvanized internal surface. High temperature-resistant rubber resin is used to seal between the gasification plate and chute.