|
C21C 1/00
|
Refining of pig-iron; Cast iron |
|
C21C 1/02
|
Dephosphorising or desulfurising |
|
C21C 1/04
|
Removing impurities other than carbon, phosphorus, or sulfur |
|
C21C 1/06
|
Constructional features of mixers for pig-iron |
|
C21C 1/08
|
Manufacture of cast-iron |
|
C21C 1/10
|
Making spheroidal graphite cast-iron |
|
C21C 3/00
|
Manufacture of wrought-iron or wrought-steel |
|
C21C 5/00
|
Manufacture of carbon steel, e.g. plain mild steel, medium carbon steel, or cast-steel |
|
C21C 5/02
|
Crucible furnace processes |
|
C21C 5/04
|
Manufacture of hearth-furnace steel, e.g. Siemens-Martin steel |
|
C21C 5/06
|
Processes yielding slags of special composition |
|
C21C 5/28
|
Manufacture of steel in the converter |
|
C21C 5/30
|
Regulating or controlling the blowing |
|
C21C 5/32
|
Blowing from above |
|
C21C 5/34
|
Blowing through the bath |
|
C21C 5/35
|
Blowing from above and through the bath |
|
C21C 5/36
|
Processes yielding slags of special composition |
|
C21C 5/38
|
Removal of waste gases or dust |
|
C21C 5/40
|
Offtakes or separating apparatus for converter waste gases or dust |
|
C21C 5/42
|
Constructional features of converters |
|
C21C 5/44
|
Refractory linings |
|
C21C 5/46
|
Constructional features of converters - Details or accessories |
|
C21C 5/48
|
Bottoms or tuyères of converters |
|
C21C 5/50
|
Tilting mechanisms for converters |
|
C21C 5/52
|
Manufacture of steel in electric furnaces |
|
C21C 5/54
|
Processes yielding slags of special composition |
|
C21C 5/56
|
Manufacture of steel by other methods |
|
C21C 7/00
|
Treating molten ferrous alloys, e.g. steel, not covered by groups |
|
C21C 7/04
|
Removing impurities by adding a treating agent |
|
C21C 7/06
|
Deoxidising, e.g. killing |
|
C21C 7/10
|
Handling in vacuum |
|
C21C 7/064
|
Dephosphorising; Desulfurising |
|
C21C 7/068
|
Decarburising |
|
C21C 7/072
|
Treatment with gases |
|
C21C 7/076
|
Use of slags or fluxes as treating agents |
