| 摘要 |
A magnesium treatment process is proposed for the production of a treated iron melt 1 containing less than 100 g/t non-metallic inclusions. The treatment reaction is so arranged that the magnesium is introduced into the melt from a chamber 4 at a depth of at least 200 mm below the surface 10. Thus the quantity of vaporised magnesium produces a mixing energy of at least 1,000 W/m3, which ensures the necessary elimination of non-metallic inclusions. The surface of the molten mass is covered by a non-oxidising, preferably a reducing atmosphere.
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