Slag foaming experiments in EAF for stainless steel production  

作　　者：XU Yingtie CHEN Zhaoping LIU Tao 

机构地区：[1]Metallurgical Process Division,Research Institute,Baoshan Iron and Steel Co.,Ltd.,Shanghai 201900,China [2]Baosteel-Stainless Steel Co.,Ltd.,Shanghai 20(O31,China

出　　处：《Baosteel Technical Research》2012年第3期32-36,共5页宝钢技术研究（英文版）

摘　　要：The foaming slag practice can effectively solve the problems existing in EAF smelting of stainless steel, such as high electrical consumption ,high refractory consumption and long tap to tap time. In this paper, theoretical analyses were made on the technical difficulties and development feasibility of the technology. Slag foaming experiments were performed in a 10t EAF where crude stainless steel with a Cr content of 13% - 15% and a carbon content of 1.5% - 2.5% was smelted and special foaming pellets were added to release additional gas for better foaming. Good foaming slag was observed with the electric arc fully covered by the foam when the content of Cr2O3 is between 7% - 12%. The industrial scale experiments were performed in a 110 t EAF by the use of the same foaming pellets. Compared with the traditional operation, these experiments resulted in better foaming effects.The foaming slag practice can effectively solve the problems existing in EAF smelting of stainless steel, such as high electrical consumption ,high refractory consumption and long tap to tap time. In this paper, theoretical analyses were made on the technical difficulties and development feasibility of the technology. Slag foaming experiments were performed in a 10t EAF where crude stainless steel with a Cr content of 13% - 15% and a carbon content of 1.5% - 2.5% was smelted and special foaming pellets were added to release additional gas for better foaming. Good foaming slag was observed with the electric arc fully covered by the foam when the content of Cr2O3 is between 7% - 12%. The industrial scale experiments were performed in a 110 t EAF by the use of the same foaming pellets. Compared with the traditional operation, these experiments resulted in better foaming effects.

关 键 词：stainless steel electric arc furnace foaming slag 

分 类 号：TF741.5[冶金工程—钢铁冶金] TM924.1[电气工程—电力电子与电力传动]