PHYSICAL-CHEMICAL AND HYDRO-GAS-DYNAMIC REGULATIONS OF CAST IRON REFINING IN LADLES
DOI:
https://doi.org/10.34185/1991-7848.itmm.2023.01.012Keywords:
Latch, slag, refining, cast iron, impurities, reaction zone, descaling, dephosphoration, desulfuration.Abstract
The history of the development of the theory and technology of cast iron refining testifies to the constant search and improvement of methods and devices that ensure, when reagents are introduced into a completely filled ladle, in the best case, calm processing with maximum assimilation of reagents and, if possible, the simultaneous removal of impurities such as Si, P and S. The organization and scope of off-site processing of cast iron have changed significantly in recent years. This was determined, on the one hand, by a significant increase in the requirements for the quality of steel (in particular, in connection with the transition to continuous casting), by the difficulties that appear in the case of using scrap metal due to an increase in the content of harmful impurities in it, and on the other hand, the advantages " slag-free" or "low-slag" technology of converter melting when processing such cast iron.
References
Baptizmansky V.I. Physico-chemical basis of the oxygen-converter process / V.I. Baptizmanskyi, V.B. Okhotsk - Kyiv-Donetsk: Higher School, 1981. - 183 p. 2. Okhotsky V.B. The zone of preferential metal refining when blowing the bath with oxygen / V.B. Okhotsky, A.G. Chernyatevich, K.S. Prosvyryn // Steelmaking production: Thematic. industries collection / MChM of the USSR. - M.: Metallurgy. 1974. - No. 3.-S. 75-82. 3. Okhotsky V. B. Physico-chemical mechanics of steelmaking processes / V. B. Okhotsk - M.: Metallurgy, 1993. - 150 p. 4. Machykin V.I. Improving the quality of ferrous metals / V.I. Machykin, A.M. Zborshchik, E.N. Skladanovsky -K.: Technika, 1981. - 161p. 5. Ono X. Kinetics of cast iron dephosphorization in the process of lime injection into an oxygen stream / H. Ono, T. Masui, K. Mori // Injection metallurgy '83: Proceedings of the conference; M.: Metallurgy, 1986. - P. 22-33.
Shurman E. Review of literature on desalination and dephosphorization of cast iron with soda-based slag / E. Shuurman, I. Bannenberg // Black Metals. - 1982. - No. 3. - P. 13-19.
