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| Technology of Inducing Dispersed In-Situ Phase by Composite Ball Explosion Reaction |
| WANG Xiao-feng, TANG Fu-ping, LI Zhen, LIN Yang, ZHANG Yue, WANG Jun |
| Ansteel Group Corporation, Anshan 114021, Liaoning, China |
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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.
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Received: 23 September 2013
Published: 13 October 2014
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2014, Vol. 49 
