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首页> 外文期刊>Iron & Steel Review >EAF-Foamy Slag in Stainless Steel Prediction New extremely efficient technology Easy to handle and cost-efficient
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EAF-Foamy Slag in Stainless Steel Prediction New extremely efficient technology Easy to handle and cost-efficient

机译：不锈钢中的电弧炉泡沫渣预测极高效的新技术易于处理且具有成本效益

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摘要

The economics of the electric arc furnace technology is strongly dependent on the efficiency with which electrical energy is introduced into the metal bath. Slag foaming practice for carbon steel grades has been used for a long time but it has not yet been successfully for stainless steel grades. Production cost lowering is achieved by improving thermal efficiency and operation conditions by stabilizing the arc activity. In consequence of such technology, the refractory and electrode consumption as well as noise level is considerably decreased. All these effects can now be achieved in stainless steel production thanks to a new patented technology of SMS Siemag AG / Germany which was developed with the AGH-University of Science and Technology in Krakow /Poland and industrially tested by AcelorMittal Inox Brazil (earlier Acesita S.A). The new technology differs fundamentally in comparison with all known applied and trialled technologies working on the basis of the injection procedure. The special prepared briquettes are used as reacting agents on the slag and the metal phase boundary forming carbon monoxide and dioxide necessary for the foaming effect. This idea was first tested in a laboratory at EAF conditions. Suitable viscosity of the slag was tested according to the normal production conditions. A controlled high foaming level, which completely covers the electric arc, allows for the highest transformer taps resulting in longer electric arcs and a higher temperature gradient in the range of 13-18 K/min.
机译：电弧炉技术的经济性在很大程度上取决于将电能引入金属熔池的效率。碳钢牌号的矿渣起泡实践已经使用了很长时间，但是对于不锈钢牌号却没有成功。通过稳定电弧活性来提高热效率和运行条件，从而降低了生产成本。由于这种技术，耐火材料和电极消耗以及噪音水平大大降低。 SMS Siemag AG /德国的一项新专利技术现在可以在不锈钢生产中实现所有这些效果，该技术是由AGH-科技大学在波兰的克拉科夫/波兰开发的，并由AcelorMittal Inox Brazil（早于Acesita SA）进行了工业测试。 ）。与所有已知的基于注射程序的已应用和试用技术相比，该新技术从根本上有所不同。特殊制备的团块用作炉渣和金属相边界上的反应剂，形成起泡作用所需的一氧化碳和二氧化碳。这个想法首先在EAF条件下的实验室中进行了测试。根据正常生产条件测试炉渣的合适粘度。可控的高发泡水平完全覆盖了电弧，可实现最高的变压器抽头，从而产生更长的电弧和13-18 K / min范围内的更高温度梯度。

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