Cart Summary
0 item(s) ($0.00)
Product Search
All Products
AIST Transactions
Books
Conference Proceedings
Industry Data
Iron & Steel Technology
About the AIST Resource Center
Product Details:

Fundamentals of Slag-Steel-Inclusion Multiphase Reactions for Producing Clean Steels During Secondary Refining and Continuous Casting Process

The probability of alumina inclusion is strongly affected by slag chemistry and deoxidation practices. Moreover, the viscosity of the slag should also be carefully controlled to suppress this harmful inclusion in secondary refining. The effect of physicochemical properties of FetO-bearing calcium aluminate. based system RH slag on the removal rate of alumina inclusions in Al-killed steel has been investigated by considering the interfacial reaction between steel melts and the slag layer. The alumina removal rate is proportional to the physicochemical factor of the slag. The addition of FetO to RH slag with CaO/Al2O3 . 1.3 effectively breaks the aluminate network structure, while the structure is less affected by FetO in the slags with CaO/Al2O3 . 1.6. Consequently, even though FetO in the RH slag enhances the atomic oxygen pickup (i.e., reoxidation) from slag to steel melt, it contributes to inclusion absorption and dissolution by lowering viscosity of the slag in conjunction with depolymerization of the aluminate frame structure. Therefore, relatively basic slag (i.e., CaO/Al2O3 = 1.2.1.4) with appropriate amounts of FetO (T.Fe = 7.9%) would be recommended as an operational window to improve the cleanliness of molten steel in the RH degasser.
Product:
2026/07 AIST Iron & Steel Technology July
PR-PM0726-4
Tae Sung Kim, Joo Hyun Park
July 01, 2026
PDF
$25.00
$35.00
$35.00
Available for Immediate Download