SINGLE-IMPREGNATING-TUBE VACUUM REFINING DEVICE AND USE THEREOF

摘要

A single-impregnating-tube (1) vacuum refining device, comprising a vacuum chamber (2) and an impregnating tube (1); during vacuum refining, the impregnating tube (1) is inserted into the liquid steel of a ladle (6); blowing nozzles are peripherally disposed hierarchically on the single impregnating tube (1); the nozzles at the same layer are disposed in groups and are independently controlled; and argon gas flows into the impregnating tube (1) through the blowing nozzles on the inner wall of the single impregnating tube (1). Increase in the air throughput via the nozzles on the impregnating tube (1) in the vacuum refining process enables the liquid steel to form a circulation rising along the periphery of the vacuum chamber (2) and descending in the center of the vacuum chamber (2), thus realizing deep decarbonization and deep desulfurization under vacuum.