IPC Main Group
C21B 11/00 Making pig-iron other than in 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
production of pig IRON
4 direct subcodes
Child Classifications
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- C21B 11/02 in low shaft furnaces
- C21B 11/06 in rotary kilns
- C21B 11/08 in hearth-type furnaces
- C21B 11/1 in electric furnaces