by physical processes, e.g. by filtration, by magnetic means

Introduced: January 1990

Last revised: January 2006

Full Title

Extraction of metal compounds from ores or concentrates by wet processes > Treatment or purification of solutions, e.g. obtained by leaching > by physical processes, e.g. by filtration, by magnetic means

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

1 direct subcode

Child Classifications

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C22B 3/24 by adsorption on solid substances, e.g. by extraction with solid resins