CPC Main Group
C22B 19/00 Obtaining zinc or zinc oxide
7 direct subcodes
Child Classifications
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- C22B 19/02 Preliminary treatment of ores; Preliminary refining of zinc oxide
- C22B 19/04 Obtaining zinc by distilling
- C22B 19/20 Obtaining zinc otherwise than by distilling
- C22B 19/28 from muffle furnace residues
- C22B 19/30 from metallic residues or scraps
- C22B 19/32 Refining zinc
- C22B 19/34 Obtaining zinc oxide (purifying zinc oxide C01G9/02)