| 摘要 |
The invention relates to a method for the production of ferro-alloys, particularly FeCr and FeMn alloys, with low carbon content in a vacuum converter. In the first stage, the melt is subjected to desiliconization and principal decarburization in the vacuum converter on the basis of the converter method under atmospheric conditions, wherein oxygen is injected into the melt via a top lance and oxygen and CO2 are injected into the melt via the nozzles, particularly annular gap nozzles, under the bath and subsequently, in a second stage, in the same converter the deep carburization phase takes place under a vacuum, wherein CO2 or CmH2m+2 is additionally injected on the protective gas side of the under-bath nozzles. |
