containing ammonia or ammonium salts

Full Title

Extraction of metal compounds from ores or concentrates by wet processes > by leaching > in inorganic alkaline solutions > containing ammonia or ammonium salts

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