Making pig-iron in the blast furnace

Child Classifications

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• C21B 5/001 +3 CPC CPC only CPC only
• C21B 5/006 CPC only CPC only
• C21B 5/007 CPC only CPC only
• C21B 5/008 CPC only CPC only
• C21B 5/02 Making special pig-iron, e.g. by applying additives, e.g. oxides of other metals +1 CPC IPC+CPC Available in IPC and CPC
• C21B 5/04 Making slag of special composition IPC+CPC Available in IPC and CPC
• C21B 5/06 using top gas in the blast furnace process (in coke ovens C10B) IPC+CPC Available in IPC and CPC