Physico-Technological Institute of Metals and Alloys of the National Academy of Sciences of Ukraine (Kiev, Ukraine):

A. N. Smirnov, Dr. Eng., Prof., E-mail: stalevoz@i.ua
A. P. Verzilov, Cand Eng., Doctoral Cand., E-mail: en_smirnov@i.ua

Stary Oskol Technological Institute (Stary Oskol, Russia)

E. N. Smirnov, Dr. Eng., Prof., E-mail: verzilovalex@gmail.com

Recently, consumer requirements for the quality of metal products are becoming increasingly high, and the need to reduce unit costs is increasing. This largely necessitates the use of more efficient technologies to remove non-metallic inclusions. In particular, an important technological problem was the reduction in the number of large non-metallic inclusions with minimal additional costs for the out-of-furnace fine-tuning process for high-quality steel. It is also important to improve the quality of the ingots which cast in an unsteady state during continuous casting, for example, during the replacement of steel ladles. Current trends in the development of metal finishing processes in steel casting and tundish in general indicate the advisability of increasing the purity of steel in a liquid state to obtain high-quality metal products. The positive experience in the industrial use of modern tundishes of increased capacity, equipped with various types of ceramic dams and special metal receivers, suggests that effective technologies for increasing the purity of liquid steel can be implemented directly in the tundish by creating conditions for the separation of non-metallic inclusions and slag particles due to flotation.

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