Abstract
As one of the important refining equipments between steelmaking and continuous casting, RH vacuum refining plays an important role in removing the inclusions in the molten steel.RH can improve steel quality largely and meet the demand of mass production of high additional value. On the base of the similarity principle, a water model was developed to study the influence factors of inclusion removal in the molten steel of 180 tons RH vacuum refining device.Liquid steel is simulated by Nacl solution, the air is approximate argon, polypropylene simulate inclusions and NaHCO3 simulate composite particles. The influence regularity of lift gas flow rate, submersion depth of snorkels and the input amount of NaHCO3 on the inclusions removal rate have been discussed and the optimal values for each influence factor have been found.
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