C
CHEMISTRY; METALLURGY
C
CHEMISTRY; METALLURGY
C22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C22B
PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
C22B
PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
15/00
Obtaining copper
15/00
Obtaining copper
C22B15/0026
Pyrometallurgy
C22B15/0026
Pyrometallurgy