Evolution of Inclusions in Fe-13Cr Treated by CaO-SiO2-Al2O3-Based Top Slag

2016 ◽  
Vol 48 (1) ◽  
pp. 564-572 ◽  
Author(s):  
Qi Wang ◽  
Lijun Wang ◽  
Jun Zhai ◽  
Jianmin Li ◽  
Kuo-Chih Chou
Keyword(s):  
Top Slag

Top slag refining for inclusion composition transform control in tire cord steel

2012 ◽  
Vol 19 (6) ◽  
pp. 490-498 ◽  
Author(s):  
Shu-hao Chen ◽  
Min Jiang ◽  
Xiao-fei He ◽  
Xin-hua Wang
Keyword(s):  
Tire Cord ◽  
Inclusion Composition ◽  
Slag Refining ◽  
Tire Cord Steel ◽  
Top Slag

Swirling Jet Mixing of a Bath Covered With a Top Slag Layer

2007 ◽  
pp. 839-840
Author(s):  
M. Iguchi ◽  
Y. Sasaki ◽  
D. Iguchi ◽  
T. Ohmi
Keyword(s):  
Slag Layer ◽  
Jet Mixing ◽  
Swirling Jet ◽  
Top Slag

scholarly journals Effect of Top Slag on the Swirl Motion of Cylindrical Bath Agitated by Bottom Blowing Liquid Jet

2004 ◽  
Vol 90 (6) ◽  
pp. 363-370 ◽  
Author(s):  
Daisuke IGUCHI ◽  
Jin YOSHIDA ◽  
Manabu IGUCHI
Keyword(s):  
Liquid Jet ◽  
Bottom Blowing ◽  
Top Slag

scholarly journals Model Experiments on the Mixing Time in a Bottom Blown Bath Covered with Top Slag

2003 ◽  
Vol 43 (11) ◽  
pp. 1858-1860 ◽  
Author(s):  
Shintaro Yamashita ◽  
Ken-ichiro Miyamoto ◽  
Manabu Iguchi ◽  
Masafumi Zeze
Keyword(s):  
Mixing Time ◽  
Model Experiments ◽  
Top Slag

Metallurgical characteristics of refining slag used for high manganese steel

2019 ◽  
Vol 116 (6) ◽  
pp. 620 ◽  
Author(s):  
Huixiang Yu ◽  
Dexin Yang ◽  
Muming Li ◽  
Ming Pan
Keyword(s):  
Manganese Steel ◽  
Middle Region ◽  
Refining Slag ◽  
Present Experimental Condition ◽  
High Manganese ◽  
High Manganese Steel ◽  
Liquid Zone ◽  
Mn Steel ◽  
Calculated Liquid ◽  
Top Slag

High manganese steel has excellent mechanical properties, which has garnered much attention. Whereas the research on the refining slag used for high Mn steel is very limited. In this study, the metallurgical characteristics of refining slag for high Mn steel were investigated based on thermodynamic calculation with FactSage 6.3 and slag-metal equilibrium reaction in MgO crucible. The calculated liquid zones of T ≤ 1873 K of CaO-SiO2-Al2O3-8%MgO-5%MnO system are located in the middle region of pseudo-ternary CaO-SiO2-Al2O3. For CaO-SiO2-Al2O3-8%MgO-MnO system, the apparent liquid zone at 1873 K enlarges with MnO content in slag increasing, and moves toward the direction of SiO2 and Al2O3 content increasing. For CaO-SiO2-Al2O3-MgO-MnO system, the liquidus zone shrinks with the basicity increasing, and moves toward the direction of Al2O3 content increasing. The measured MnO content in top slag reacted with high Mn steel was much higher than that reacted with conventional steels. In present experiments, the MnO content was around 5% when CaO-SiO2-Al2O3-MgO slag with basicity of 4 was in equilibrium with high Mn steel (Mn = 10, 20%) at 1873 K. The inclusions in master high Mn steel were mainly MnO type. After reaction with top slag, most inclusions transformed to MnO-SiO2 system and MnO-Al2O3-MgO system, in which the MnO content still shared the majority. Thermodynamic calculations show that SiO2 in top slag can be reduced by [Mn] in steel to supply [Si] under present experimental condition, which subsequently reacts with [O] in steel bath to form SiO2.

scholarly journals Demystifying Underlying Fluid Mechanics of Gas Stirred Ladle Systems with Top Slag Layer Using Physical Modeling and Mathematical Modeling

2019 ◽  
Vol 59 (7) ◽  
pp. 1224-1233 ◽  
Author(s):  
Rodolfo D. Morales ◽  
Fabian Andres Calderon-Hurtado ◽  
Kinnor Chattopadhyay
Keyword(s):  
Mathematical Modeling ◽  
Fluid Mechanics ◽  
Physical Modeling ◽  
Slag Layer ◽  
Top Slag

scholarly journals Sulphide Capacity and Mineralogy of BaO and B2O3 Modified CaO–Al2O3 Top Slag

2014 ◽  
Vol 54 (7) ◽  
pp. 1570-1577 ◽  
Author(s):  
Pengcheng Yan ◽  
Pinxu Nie ◽  
Shuigen Huang ◽  
Bart Blanpain ◽  
Muxing Guo
Keyword(s):  
Top Slag

scholarly journals The Research of Low-Oxygen Control and Oxygen Behavior during RH Process in Silicon-Deoxidization Bearing Steel

Metals ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 812 ◽  
Author(s):  
Wei Xiao ◽  
Min Wang ◽  
Yanping Bao
Keyword(s):  
Mass Transfer ◽  
Liquid Steel ◽  
Vacuum Chamber ◽  
High Vacuum ◽  
Bearing Steel ◽  
Smelting Process ◽  
Oxygen Mass Transfer ◽  
Oxygen Control ◽  
Rh Process ◽  
Top Slag

The variation of total oxygen (T.O) content, characterization of inclusions, slag composition, and off-gas behavior during the smelting process of silicon-deoxidization bearing steel were investigated with industrial experiments. The change of content of combined oxygen during RH (Ruhrstahl–Hereaeus vacuum degassing furnace) process was calculated and compared with T.O content change. It is found that the decrease of oxygen content is mainly caused by the removal of dissolved oxygen rather than the removal of oxides during RH process. Carbon was found to be a strong deoxidizer (stronger than aluminum) in high vacuum degree. Top slag is an oxygen source of the deoxidization process, leading to the re-oxidization of liquid steel, even though the FeO content is low in top slag. During the RH process, the change of oxygen mainly exists in three processes: 1) Deoxidization reaction in vacuum chamber, 2) oxygen mass transfer process between liquid steel out from a vacuum chamber and in ladle, and 3) oxygen mass transfer between ladle slag and liquid steel. It depends mainly on the mass transfer of the oxygen in the liquid steel.

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