(1113) Novel concept of cleansing the liquid steel by the fine in-situ phase due to the composite ball explosion reaction

摘要

In the present investigation, a novel cleanness steel production technology due to the dispersed in-situ phase induced by the composite ball explosion reaction has been put forward. A composite ball with this function has been designed and the industrial experimental investigations have also been carried out in Ansteel. The results indicate that this novel technique is a low-cost and high efficiency cleanness steel production method, which can realize quick slag forming, fast dephosphorization and fine inclusion removal. Temperature drop during transferring is small. The heat-up speed during LF has been increased for more than 2°C/min and the refining period has been shorten for 3～8min. The phosphorous and total oxygen content in the as-cast slab can approach to 30ppm and 6ppm, respectively after its treatment.