Removal of Copper and Tin in Molten Iron with Combination of Plasma Heating and Powder Blowing Decarburization under Reduced Pressure
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The combination of plasma heating and the powder blowing decarburization method was applied to remove copper and tin, which are "tramp" elements in relation to recycling, from molten iron in a large scale experiment. Plasma heating was adopted as the local heating method and combined with a weak oxidizing powder blowing method under a commonly used reduced pressure of about 0.13-0.65 kPa for their removal. <br>The results demonstrated that the method could accelerate the efficient removal of copper and tin from iron melted from scrap under a reduced pressure compared with only the powder blowing method. The apparent removal rates of copper and tin increased as 2-3 times and 4 times much as that without plasma heating. The plasma heating is thought to compensate for the heat loss at the reaction site by this method.
- Transactions of the Iron and Steel Institute of Japan
Transactions of the Iron and Steel Institute of Japan 39(9), 905-912, 1999-09
The Iron and Steel Institute of Japan