ZINC-OXIDE - QUALITY ASSURED PRODUCTION A ND DELIVERY

The grades of zinc oxide predominantly used in the rubber industry are produced in a number of differing furnace systems using secondary zin c as well as primary zinc for raw materials. The furnace systems are c ontrolled within guidance parameters which themselves are determined a s a result of chemical analysis carried out during the process. With s econdary raw materials a 100 % check on incoming materials is often in dispensable. In the WdK guideline 1204, ''Zinc Oxide/Zinc White'', all the parameters relevant to the quality of zinc oxide are listed. This has become the basis of many specifications and has made a significan t contribution in reducing the number of parameters to be checked. Wit h critical examination of the guideline a further reduction in the cha racteristic parameters could be achieved.