Research of Carbon Oxygen Product Stability Control Technology on the Long Life Converter in Laiwu Steel
GAO Zhibin
WEN Fuxin
YU Liangtao
Abstract：Through improving the design of bottom blowing air brick process, developing new type of converter slag splashing technology, optimization intelligent of converter steelmaking and bottom blowing model, to realize the combined-blowing converter low carbon oxygen deposition and stability control at a lower level. Using a laser thickness gauge to monitor the furnace type to guarantee the stability of furnace type, prevent the carbon oxygen volume fluctuations and using the static decarburization technology to further reduce carbon and oxygen. After the process implementation, the carbon oxygen volumes of the No.1, No.2 or No.3 converters were controlled in 0.002 5 and the carbon oxygen product of No.4 converter for dephosphorization was controlled in 0.002 3;The average total iron content of the final slag of 4 converters was reduced to 12.83%from 14.38%and the average oxygen content in molten steel at the end of blowing was decreased to 450 × 10-6 from 520 × 10-6. The direct economic benefit of oxygen carbon product stability control technology for long life of converter is 23.9 million Yuan.
Keywords：top-bottom convertercarbon oxygen productintelligence modelstatic decarburization
Publication Date：2015-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：4( 20-22,25 )