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            1. Application industry
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              Zinc oxide for arrester purpose

              Uses: In the electronics industry, Zinc oxide for arrester purpose is mainly used to manufacture the magnetic elements of electronic structure-Ferrite; moreover, TV, radio, telecommunications installations and rheostat all adopts such magnetic materials.

              Standard:JB/T9670-1999

              Item
              Index
              Zinc oxide (as ZnO)%,≥
              99.7
              Potassium oxide (as K)%,≤
              0.0010
              Sodium oxide (as Na)%,≤
              0.0010
              Ferric oxide (as Fe)%,≤
              0.0020
              Cadmium oxide (as Cd)%,≤
              0.0050
              Lead oxide (as Pb)%,≤
              0.037
              Copper oxide (as Cu)%,≤
              0.0002
              Metal zinc (as Zn)%,≤
              No
              Moisture %,≤
              0.3
              Insoluble matter in HCl%,≤
              0.006
              Loss on ignition%,≤
              0.2
              PH value
              7.0-8.0
              Average size (um),≤
              0.50
              Residue on sieve%,≤
              0.10


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