沙卫星, 王坤, 陈秀强, et al. Practice of Process for Control of Tantalum Content in Steel MHTlOTa Melting by 30t EAF-LF-VOD/VHD Flowsheet[J]. Special Steel, 2016, 37(2): 44-46.
沙卫星, 王坤, 陈秀强, et al. Practice of Process for Control of Tantalum Content in Steel MHTlOTa Melting by 30t EAF-LF-VOD/VHD Flowsheet[J]. Special Steel, 2016, 37(2): 44-46.DOI:
[O] and liquid temperature on tantalum yield of steel MHT10Ta is analyzed by commercial test. The results of pilot 9 heats commercial production show that with melting in EAF by oxidation method
deoxidizing in LF by G powder
VOD refining vacuum ≤67 Pa for ≥15 min
VHD heating insuring Al content in steel ≥0.02%
liquid temperature 1635-1645°C
Ar flow rate 100 L/min
adding tantalum bar 0.125%
inserting Fe-B according 0.01% content before tapping
tapping temperature 1580-1595℃ and Ar shielding casting; the tantalum content in finish products of steel MHT10Ta is 0.08%-0.105%
the yield of tantalum is up to 60% by process optimization.