Dudchenko S. Development and research of energy-efficient blowing-mode of oxygen converter melting under the imposition of low-voltage electric potentials

The thesis is about the study of the nature of the influence of low-voltage potential on the hydrodynamics of gas jet interaction with a liquid bath, slag formation and the effect of blowing parameters on the implementation of the process of low-voltage potential application in the oxygen converter process and developing a resource-efficient and energy-efficient variant of blowing mode with low-voltage electric potentials application that provides by reducing the level of metal losses increase the metal yield. Settlement, analytical, laboratory and experimental industrial studies have established the features and directions of the influence of the low voltage potential on the hydrodynamics of the interaction of the blowing stream with a liquid bath, the amount of liquid and metal losses during blowing, slag formation during the blowing, power from low-voltage exposure. The necessity of continuous maintenance of the lance in the “submerged” state in the slag-metal emulsion by its moving depending on the level of current in the lance-metal bath circuit to ensure a more even and steady transfer of energy to the converter bath during blowing is substantiated. Industrial testing of the recommended blowing mode showed the possibility of an increase in the yield of liquid metal by 2.5-3.0 kg/t (depending on the converter capacity) compared with the use of low-voltage potential in accordance with the instructions in force in the workshops. Implemented. Ferrous metallurgy.