General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals

Classification Context

Section:

CHEMISTRY; METALLURGY

Class:

METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

Subclass:

PRODUCTION OR REFINING OF METALS; PRETREATMENT OF RAW MATERIALS

Child Classifications

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• C22B 9/02 Refining by liquating, filtering, centrifuging, distilling or supersonic wave action
• C22B 9/04 Refining by applying a vacuum
• C22B 9/05 Refining by treating with gases, e.g. gas flushing
• C22B 9/1 with refining or fluxing agents; Use of materials therefor
• C22B 9/14 Refining in the solid state
• C22B 9/16 Remelting metals