OREANDA-NEWS. December 20, 2011. Recently, at the same time of synchronization of keeping the furnace life and bottom blowing, 90 tons top and bottom blowing stainless steel converter in No.2 Steel Making Plant create a record of 481 times furnace life, realizing a new breakthrough of TISCO converter stainless steelmaking, reported the press-centre of TISCO. 

Converter stainless steelmaking is a high-tech smelting technology with high scientific and technological content, difficult technology, complex process standards and strict supporting system requirements in the world scope, which can be applied in the production of high quality ultra low carbon stainless steel by its characteristics like low energy consumption, large production capacity, fast decarburization rate and etc. In 2002, China's first heat of stainless steel that applying top and bottom combined-blowing converter technology was smelted in TISCO. TISCO produces about 500,000 tons of stainless steel by using this technology every year, the main steel grades are 400 series stainless steel, coinage steel and etc.

TISCO stainless steel converter is the key equipment for stainless steel smelting with the world's advanced level, the company has all of its patent technology. Due to the particularity of the smelting, the erosion of the molten steel stainless steel to lining is much more serious than ordinary steel. From January to August this year, the average furnace life is lower, which not only becomes the bottleneck of the normal production, but also affects the cost of stainless steel. In order to solve the problem, No.2 Steel-making Plant has made a targeted technical research, and set up a research team composed by the members of Guo Xiaobing Innovation Studio, through thorough and careful tracking of the converter application process, they analyzed the reason of lining damage, and made a study and improvement for smelting process, which achieved good results.

In September and October, stainless steel converter life realized high running, with an average furnace life of 389 times. According to the operation, this converter can reduce cost of 645,000 yuan monthly and create effect of more than 2.48 million yuan. At the same time of improving converter life, bottom blowing life can keep consistent, realizing the simultaneous change of furnace lining and furnace bottom, which can ensure the safe operation of the converter.