| 摘要 |
PROBLEM TO BE SOLVED: To provide a dephosphorization method for hot metal by which dephosphorization efficiency can be improved even when an increase in slag quantity is suppressed by decreasing basicity.SOLUTION: Converter slag generated in decarburization refining of hot metal in a converter is crushed, dephosphorization refining agent containing ≥90 mass% of the crushed converter slag is injected into hot metal in a hot metal mixer car or in a hot metal ladle, and also collected dust generated from the hot metal mixer car is recovered, and a solid oxygen source containing the recovered collected dust is injected into the hot metal in the hot metal mixer car to remove the phosphorus in the hot metal. |
