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Article: Removal of copper from carbon-saturated iron with an aluminum sulfide/ferrous sulfide flux
- Article from:
- Metallurgical and Materials Transactions
- Article date:
- April 1, 1998
- Author:
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Copyright informationCopyright Minerals, Metals & Materials Society and ASM International Apr 1998. Provided by ProQuest LLC. (Hide copyright information)
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Scrap iron and steel have long been considered as resources in the steelmaking industry, and their value is largely determined by the impurity content. Copper is a particularly troublesome impurity because of its role in causing hot shortness and should be kept below ==0.1 wt pct. A method for reducing copper content in steel to <0.1 wt pct could lead to increased use of lower-quality scrap.
In general, to remove copper from an iron-based metal by a slagging process, the flux chemistry must be such that the copper forms a more chemically stable species in the resulting matte than in the iron phase. In addition, the formed copper species must be more stable than the iron species that ...
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