Abstract The effects of treatment time, lift gas flow rate and liquid height in
vacuum vessel on inclusion removal in RH degasser were investigated by
choosing emulsion drops simulated as inclusions in a water model. The
results show that most of the inclusions can be removed after treatment
for 12 min, and all the inclusions which can be removed almost
disappeared from the system after treatment for 24 min. Larger lift gas flow
rates seemed to be more efficient for inclusions removal and there is a
lift gas flow rate for the best of inclusions removal (20 L/min for this
work). The liquid height in vacuum vessel has also an optimized value
for inclusions removal (46 mm for this work).
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