Production practice and furnace condition maintenance of 80 t converter to increase scrap ratio
JIN Lei1, SI Yu2, LI Ke-jian2
1. Profiles Materials Manufacturing Department Rizhao Steel Co., Ltd., Rizhao 276806, Shandong, China;
2. School of Metallurgy and Materials Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
Abstract：Main raw materials for converter steelmaking are scrap steel and molten iron. Due to the continuous consumption of domestic and foreign iron ore resources and high-quality coking coal resources, as well as the increasingly stringent requirements for energy conservation and emission reduction, the production cost of molten iron in blast furnaces has increased, while the price of scrap has gradually decreased. Increase the scrap ratio and reduce the consumption of molten iron to reduce the cost of converter steelmaking. After the scrap steel is increased, the new oxygen lance position control, the flexible addition of light-burned dolomite and lime two auxiliary materials, and the use of anthracite as the heat source to increase the temperature of the converter in the early stage, the steel mill eats up to 250 kg/t of scrap, and the average tapping volume is 83.5 t, and the furnace age is controlled between 14 000 and 17 000 furnaces.
金磊, 司宇, 栗克建. 80 t转炉提高废钢比的生产实践与炉况维护[J]. 连铸, 2021, 40(1): 21-25.
JIN Lei, SI Yu, LI Ke-jian. Production practice and furnace condition maintenance of 80 t converter to increase scrap ratio. CONTINUOUS CASTING, 2021, 40(1): 21-25.
2021, Vol. 40 
