IPC Main Group
C21B 7/00 Blast furnaces
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- METALLURGY OF IRON
- Subclass:
- MANUFACTURE OF IRON OR STEEL
Related Keywords
BLAST furnacesblast FURNACES
10 direct subcodes
Child Classifications
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- C21B 7/02 Internal forms
- C21B 7/04 with special refractories
- C21B 7/08 Top armourings
- C21B 7/1 Cooling; Devices therefor
- C21B 7/12 Opening or sealing the tap holes
- C21B 7/14 Discharging devices, e.g. for slag
- C21B 7/16 Tuyères
- C21B 7/18 Bell-and-hopper arrangements
- C21B 7/22 Dust arresters
- C21B 7/24 Test rods or other checking devices