摘要
随着废钢积累和在炼钢过程的循环利用,钢中Cu含量不断增高,影响钢铁产品质量,严重制约了废钢的利用。因此,需要在冶金过程中将Cu尽可能脱除。然而,Cu的热力学性质决定了冶金过程的氧化和还原精炼难以将Cu从铁液或钢液中去除。在分析总结现有各种脱铜方法的基础上,提出了一种基于选择性氯化和挥发的新方法,其要点为:首先使铁水或钢液中的Cu部分氧化进入熔渣,然后通过熔渣中Fe和Cu的选择性氯化和挥发反应,最终Cu以高挥发性的氯化物形式得到脱除。目前的研究表明该方法理论上可行,初步的试验结果也证实可有效地进行Cu,Fe的分离,渣系的氧化性和组成对脱铜过程有重要的影响。
With the accumulation of scrap and recycling in the steel-making process, the increased copper content in steel affects the quality of steel product. It severely restricts the utilization of scrap. So, the copper should be removed in metallurgy process as much as possible. However, according to the thermodynamic property of copper, it is difficult to remove copper from molten iron or steel by oxidation and reduction in steelmaking process. The va- rious methods of copper removal have been summarized, and an innovative method of copper removal based on the selective chlorination and evaporation has been proposed. In this process, the copper in molten steel is partly oxi- dized and transferred into molten slag, and chlorinated in molten slag. Finally, the copper chlorides with high va- por pressure evaporate from molten slag. Current research shows that this method is theoretically feasible, and preliminary experimental results have also proved to be effective separation of copper and iron, the oxidizability and component of molten slag have important effects on copper removal from molten steel.
出处
《钢铁研究学报》
CAS
CSCD
北大核心
2014年第8期1-7,共7页
Journal of Iron and Steel Research
基金
国家自然科学基金资助项目(51104071)
关键词
脱铜
选择性氯化
挥发
钢铁冶金
copper removal
selective chlorination
evaporation
steelmaking
