Abstract：Decreasing the total oxygen content and the inclusion removal is the key technique to produce the high purity steel.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 prepared using a laboratory model batch type balling disc and the industrial experimental investigations have also been carried out. 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 rate during LF has been increased for more than 2 ℃/min and the refining period has been shorten for 3－8 min. Average total oxygen in the as-cast slab can be decreased from 14.2×10-6 to 9.69×10-6. The lowest phosphorous in the casting bland can approach to 30×10-6 after its treatment.
2014, Vol. 49 
