Patent ID: 6039917
Filing Date: 2000-03-21
Classification: B01F,C22B,C23C,F27D

Abstract:
In a metal treating apparatus having a pot for holding a bath of molten metal, transfer means for moving the molten metal in the pot, including a molten metal-lifting passage having inlet opening means disposed in the molten metal for receiving molten metal into the metal-lifting passage, the metal-lifting passage having an outlet opening in the molten metal for discharging molten metal received in the inlet opening means, the metal-lifting passage having gas-injection openings upstream of the molten metal outlet opening; gas passage means for connecting a source of gas to the gas-injection openings in the form of a gas jet into the metal-lifting passage such that the gas induces a flow of molten metal from the molten metal inlet opening means toward the molten metal outlet opening along an axis of motion, the improvement comprising:the molten metal inlet opening means comprising a window in the metal-lifting passage disposed coaxially and/or laterally with respect to the path of motion of the gas flowing through the metal-lifting passage;the gas-injection openings are disposed to introduce a gas jet into the metal-lifting passage along said axis of motion; andthe gas injection openings discharge the gas into the metal lifting passage in the direction of metal flow as the gas mixes with the metal.