Method for fire refining of metals in the thermodynamically equilibrium system of a drip-gas medium

摘要

Generally, fire refining of metals is carried out by blowing through a liquid melt thick layer and significantly rarely by mixing a melt stream with a gas. Said methods are low-productive and do not ensure rapid gas access to each melt drop. The inventive method for fire refining of metals in a thermodynamically equilibrium system consists in supplying a thin and wide metal layer to a special chamber provided with an inclined bottom and a receiver. Gases are supplied to the chamber through tuyeres embodied in the front wall thereof and through the bottom and form, together with the supplied melt, a drip-gas fog which is thermodynamically equilibrium by sufficiently heating gases and metals to temperatures which ensure a metal flowing temperature excess in a drip-gas mixture for a whole oxidizing-reducing period. Said method ensures a high productivity by rapid gas access to each melt drop and reduces materials consumption of a device.