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首页> 外文期刊>環境資源工学 >Enhancement of Evaporation Removal Rate of Copper in Molten Iron by the Silicon and/or Carbon Addition
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Enhancement of Evaporation Removal Rate of Copper in Molten Iron by the Silicon and/or Carbon Addition

机译：硅和/或碳的添加提高铁水中铜的蒸发去除率

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摘要

It is important to establish the efficient removal method of the tramp elements such as copper and tin in recycling ferrous scraps, because the elements cause adverse effects on the mechanical properties of steel products. In the present study, the activity coefficient of copper in molten iron is increased by adding silicon and/or carbon, which have a strong affinity with iron, and the effects of silicon and carbon on the evaporation rate of copper in molten iron have been investigated at 1923 K under the chamber pressure of 133 Pa. In the case of the Fe-Si-Cu alloy, the apparent evaporation rate constant of copper has a maximum value at about 3 mass percent Si. The appearance of the optimum silicon content at which the copper evaporation rate is maximized can be thermodynamically explained. The enhancement effect of copper evaporation by the carbon addition is larger than that by the silicon addition. Moreover, the addition of both silicon and carbon introduced twice higher removal rate of copper. The optimum composition of Fe-Si-C alloy at which the copper evaporation rate is enhanced is around the composition of Fe-1.5 mass percent Si-3 mass percent C.
机译：建立有效的去除铁屑废料中的铜和锡等流浪元素的方法很重要，因为这些元素会对钢铁产品的机械性能产生不利影响。在本研究中，通过添加与铁具有强亲和力的硅和/或碳来增加铁水中铜的活度系数，并且研究了硅和碳对铁水中铜蒸发速率的影响。在1923 K下，在133 Pa的室内压力下。在Fe-Si-Cu合金的情况下，铜的表观蒸发速率常数在Si的约3质量％处具有最大值。可以热力学解释使铜的蒸发速率最大的最佳硅含量的出现。通过碳添加的铜蒸发的增强效果大于通过硅添加的铜的增强效果。此外，同时添加硅和碳可将铜的去除率提高两倍。可以提高铜的蒸发速度的Fe-Si-C合金的最佳组成在Fe-1.5质量百分比的Si-3质量百分比的C的组成附近。

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