| 摘要 |
<p>PURPOSE: A nitrogen-reduced blowing method for a converter is provided to reduce costs by preventing absorption of nitrogen and increasing the removal rate of nitrogen at low hot metal ratios. CONSTITUTION: A nitrogen-reduced blowing method for a converter comprises the steps of: charging scrap iron and hot metal(S11,S12), implementing first blowing(S13), removing the remaining slag in the converter(S14), implementing secondary blowing(S15), and supplying 1-3kg of graphite briquette per a tone of molten steel at 50-60% of the secondary blowing(S1). [Reference numerals] (S1) Supplying graphite briquette; (S11) Charging iron; (S12) Charging hot metal; (S13) First blowing; (S14) Removing slag; (S15) Second blowing; (S18) Starting tapping</p> |
