|  | C |
SECTION C — CHEMISTRY AND METALLURGY

METALLURGY

|  | C21 |
METALLURGY OF IRON

|  | C21C |
PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON AND STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS (refining or in general Fulltext... Hierarchy... Expanded...C22B 9/00)

|  | C21C 1/00 |
Refining of pig-iron; Cast iron

|  | C21C 1/02 |
· | Dephosphorising or desulphurising

|  | C21C 1/04 |
· | Removing impurities other than carbon, phosphorus, and sulphur

|  | 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 process

|  | 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 5/36 |
· · | 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 |
· · · | 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 (making liquid steel by direct processes Fulltext... Hierarchy... Expanded...C21B 13/00)

|  | C21C 7/00 |
Treatment in the molten state of steel, steel alloys, or ferrous alloys

|  | C21C 7/02 |
· | Dephosphorising (Fulltext... Hierarchy... Expanded...C21C 5/28 takes precedence); Desulphurising

|  | C21C 7/04 |
· | Removing other impurities

|  | C21C 7/06 |
· · | Deoxidising, e.g. killing

|  | C21C 7/08 |
( transferred to Fulltext... Hierarchy... Expanded...C21C 7/06 )

|  | C21C 7/10 |
· | Handling in vacuum