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- W2382524769 abstract "The characteristics of the mass transfer between powder particles and molten steel in the Ruhrstahl Heraeus process injection(RH-IJ)refining were simulatively investigated by the use of a 1/4 scale water model of a 150 t Ruhrstahl Heraeus(RH)degasser. The influences of the lifting gas flow rate,the up-snorkel and down-snorkel inner diameters and the size of powder particles on the characteristics of the mass transfer were examined,together with the mass transfer coefficient on the liquid side. The results show that under the condition that the inner diameters of both the up-snorkel and the down-snorkel are the same,the mass transfer coefficient in the liquid,k increases with the increase of the gas flow.k refers to the mass transfer coefficient of molten steel and the powder particles on the steel liquid side. However,the increase of the gas flow Qg should not result in a saturated circulation rate. Under the current working condition,k ranges from 3.392×10-5 m/s to 2.661×10-4 m/s. On the other hand,with a given lifting gas flow rate and down-snorkel inner diameters,the mass transfer increases with the increase of the up-snorkel inner diameter. When gas flow increases and the up-snorkel inner diameter is given,the mass transfer coefficient k on the liquid side between molten steel and powder partides decreases with the increase of the down-snorkel inner diameter.The k on the liquid side increases with the increase of the circulation rate.Under the condition of other parameters being the same,k increases with the increase of the powder particle size. In order to enhance the mass transfer,it is better not to use extremely fine powder." @default.
- W2382524769 created "2016-06-24" @default.
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- W2382524769 date "2010-01-01" @default.
- W2382524769 modified "2023-09-25" @default.
- W2382524769 title "Characteristics of the Mass Transfer Between Molten Steel and Particles in the 150t RH-IJ Refining" @default.
- W2382524769 hasPublicationYear "2010" @default.
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