IPIQ

CHEMISTRY; METALLURGY

C22

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

C22B

PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS

3/00

Extraction of metal compounds from ores or concentrates by wet processes

C22B3/20

Treatment or purification of solutions, e.g. obtained by leaching

C22B3/22

by physical processes, e.g. by filtration, by magnetic means; , or by thermal decomposition;