The dephosphorization of hot metal outside the steelmaking furnace.
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概要
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The preliminary dephosphorization method of hot metal outside thesteelmaking furnace was investigated to obtain extra low phosphorus steels and to utilize the LD slag.Hot metal with the phosphorus content of 0.09-0.16% was treated in a ladle with the dephosphorization agent consisting of LD slag and iron oxide or lime and iron oxide, and the phosphorus content of hot metal was reduced to 0.020-0.060% or 0.003-0.020%, respectively.By refining the dephosphorized hot metal in LD converter, extra low phosphorus killed steels having the phosphorus content of lower than 0.005% were obtained.By applying this dephosphorization method for the production of normal phosphorus steels, the amount of generated LD slag is decreased, and the LD slag can be utilized mainly as a dephosphorizing agent of hot metal again.
- The Iron and Steel Institute of Japanの論文
The Iron and Steel Institute of Japan | 論文
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