Fundamental studies on the removal of copper, tin and zinc from remelted steel scrap

Tetsuya Nagasaka, M. Hino, S. Ban-ya

研究成果: Conference article査読

2 被引用数 (Scopus)


Some laboratory studies have been done to discuss the possibility of copper, tin and zinc removal from molten steel scrap. At first, the equilibrium copper distribution ratio between FeS-based sulfide flux and Fe-Csat. melt at 1673 K is reviewed. The copper distribution ratio, LCu, increases with the addition of alkaline- or alkaline earth sulfide into FeS and reaches the maximum, while the sulfur content in metal decreases at the same time. The maximum value of LCu of approximately 20-30 is obtained in FeS-M2S (M: Li, Na, and K) and FeS-MS (M: Sr and Ba) fluxes. In the second, the vaporization rate of zinc from liquid Fe-Zn alloy is discussed at 1873 K by impinging Ar onto the surface of inductively stirred melt. The evaporation rate of zinc is found to be mainly controlled by the liquid phase mass transfer on the condition. The evaporation rate of tin from Fe-S-Csat. bath is also studied at 1673 K under reduced pressure. The evaporation rate of tin is controlled mainly by the gas phase mass transfer and becomes drastically faster by adding sulfur in the metal, and it indicates that tin dissolved in liquid iron could be removed by evaporation in the form of SnS. The removal rate of tin, zinc or other residual elements from molten steel in the conventional practical operations or vacuum treatment is also discussed based on the present results.

ジャーナルSteelmaking Conference Proceedings
出版ステータスPublished - 1996 12月 1
イベントProceedings of the 1996 79th Steelmaking Conference - Pittsburgh, PA, USA
継続期間: 1996 3月 241996 3月 27

ASJC Scopus subject areas

  • 金属および合金


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