PRODUCTION AND REFINING OF METALS (electrolytic C25); PRETREATMENT OF RAW MATERIALS

Introduced: September 1968

Description

C22B encompasses the extraction, production, and refining of metals from raw materials, including pretreatment processes such as ore beneficiation, roasting, and calcination. This subclass covers pyrometallurgical, hydrometallurgical, and electrometallurgical methods for obtaining both ferrous and non-ferrous metals, as well as their purification and recovery from scrap or secondary sources. Typical technologies include smelting furnaces, leaching processes, electrolytic refining, and waste treatment for metal recovery. Related alloy production and thermal treatment of metals are classified separately under C22C and C22F respectively.

Title

Titles differ between systems:

IPC: PRODUCTION OR REFINING OF METALS; PRETREATMENT OF RAW MATERIALS

CPC: PRODUCTION AND REFINING OF METALS (electrolytic C25); PRETREATMENT OF RAW MATERIALS

Full Title

Full titles differ between systems:

IPC:

PRODUCTION OR REFINING OF METALS; PRETREATMENT OF RAW MATERIALS

CPC:

PRODUCTION AND REFINING OF METALS (electrolytic C25); PRETREATMENT OF RAW MATERIALS

IPC and CPC are identically structured here. All 25 subcodes exist in both systems.

4 shared codes have differing titles between IPC and CPC.

Child Classifications

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C22B 1/00 Preliminary treatment of ores or scrap +1 CPC IPC+CPC Available in IPC and CPC
C22B 11/00 Obtaining noble metals +1 CPC IPC+CPC Available in IPC and CPC
C22B 13/00 Obtaining lead +1 CPC IPC+CPC Available in IPC and CPC
C22B 15/00 Obtaining copper +4 CPC −4 IPC IPC+CPC Available in IPC and CPC
C22B 17/00 Obtaining cadmium +1 CPC IPC+CPC Available in IPC and CPC
C22B 19/00 Obtaining zinc or zinc oxide IPC+CPC Available in IPC and CPC
C22B 21/00 Obtaining aluminium +4 CPC IPC+CPC Available in IPC and CPC
C22B 23/00 Obtaining nickel or cobalt +2 CPC IPC+CPC Available in IPC and CPC
C22B 25/00 Obtaining tin +1 CPC IPC+CPC Available in IPC and CPC
C22B 26/00 Obtaining alkali, alkaline earth metals or magnesium since 1974 IPC+CPC Available in IPC and CPC
C22B 3/00 Extraction of metal compounds from ores or concentrates by wet processes IPC+CPC Available in IPC and CPC
C22B 30/00 Obtaining antimony, arsenic or bismuth since 1974 IPC+CPC Available in IPC and CPC
C22B 34/00 Obtaining refractory metals since 1974 IPC+CPC Available in IPC and CPC
C22B 35/00 Obtaining beryllium IPC+CPC Available in IPC and CPC
C22B 4/00 Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys (obtaining iron or steel C21B, C21C) since 1974 +1 CPC IPC+CPC Available in IPC and CPC
C22B 41/00 Obtaining germanium IPC+CPC Available in IPC and CPC
C22B 43/00 Obtaining mercury IPC+CPC Available in IPC and CPC
C22B 47/00 Obtaining manganese +2 CPC IPC+CPC Available in IPC and CPC
C22B 5/00 General methods of reducing to metals IPC+CPC Available in IPC and CPC
C22B 58/00 Obtaining gallium or indium since 1974 IPC+CPC Available in IPC and CPC