Absorption of non-metallic inclusions and prevention of oxidation of powders in molten steel in tundish

摘要

A powder flux for preventing oxidation and absorption of nonmetallic intermediate of molten steel in tundish has a particle size of ma. 75 micron and composes, in wt, 40% cement clinker, 50% blast furnace sludge (but, the total of the cement clinker and blast furnace sludge is 40-80%), max. 20% electric furnace dust from the manufacutring of Si-ferroalloy, 5-50% fluorite, max. 20% sodium glass of sodium felspars, and 2-10% cokes powder.