Application of a New Type of High Efficiency Nozzle in the Continuous Casting Machine of Eight Steel Slabs
since the No.1 slab caster of Bayi Iron and Steel Co.,Ltd.was put into operation,the abnormal rate of nozzle online use has remained high,and the consumption of secondary cooling compressed air is also high,which has an impact on the qual-ity and output of slabs,resulting in high cost per ton of steel.By adopting a new type of high-efficiency aerosol nozzle,opti-mizing the secondary cooling gas distribution process,and strengthening the quality management of water and gas medium,the online abnormality rate of the nozzle has been reduced from 25%to less than 2%,the consumption of secondary cooling compressed air has been reduced by nearly 30%,the longitudinal and transverse cooling uniformity of the continuous casting slab has been further improved,and the defect rate of the continuous casting slab has also been greatly reduced,which pro-vides a guarantee for the overall quality improvement and efficiency increase,energy saving and consumption reduction of the steel plant.
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