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PCE
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IPC Main Group
C21B 5/00

Making pig-iron in the blast furnace

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 IRONtreatment of SLAG in iron production

3 direct subcodes

Child Classifications

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  • C21B 5/02 Making special pig-iron, e.g. by applying additives, e.g. oxides of other metals
  • C21B 5/04 Making slag of special composition
  • C21B 5/06 using top gas in the blast furnace process