杜成武, 朱苗勇, 潘时松, et al. A Study of Water Model on Mixing Characteristics of Powder Injected through Top Lance in RH-PTB Vacuum Refining Unit[J]. Special Steel, 2005, 26(5): 16-18.
杜成武, 朱苗勇, 潘时松, et al. A Study of Water Model on Mixing Characteristics of Powder Injected through Top Lance in RH-PTB Vacuum Refining Unit[J]. Special Steel, 2005, 26(5): 16-18.DOI:
the powder injected through top lance in RH-PTB vacuum refining has been simulated using 1:9 water model ladle(diameter-0.43 m
height to water surface-0.45 m)to study the effect of top lance gas flow rate
lifting gas flow rate of up-leg and height of top lance on injecting powder mixing time in liquid. The results showed that with top lance gas flow rate increasing
the injecting powder mixing time in liquid increased and had maximum value; with lifting gas flow rate of up-leg increasing
the mixing time quickly decreased and as lifting gas flow rate was ≥15 L/min
the mixing time was no longer decreasing; the effect of height of top lance on mixing time was definite
therefore in operation
according to specific circumstances to adjust height of top lance decreasing powder mixing time.