As the use of ceramic zinc oxide becomes increasingly widespread, its quality has also improved. Owing to its advantageous properties, it is now widely utilised. To help you make better use of it, let us now take a look at the production processes involved in the direct calcination method for ceramic zinc oxide.

   Direct calcination of zinc oxide is the process of extracting zinc oxide from zinc-containing materials or metallic zinc. Zinc oxide has a wide range of applications and is primarily used in the rubber, coatings, enamel, ceramics, glass, pharmaceutical, agricultural and electronics sectors. The production methods for zinc oxide can be divided into pyrometallurgical and hydrometallurgical processes. The pyrometallurgical method involves the direct reduction of zinc-bearing materials at high temperatures, with the resulting zinc vapour subsequently oxidised to form zinc oxide, or the volatilisation and oxidation of metallic zinc to produce zinc oxide. The former is known as the direct method, whilst the latter is known as the indirect method. In the direct method, zinc concentrate is used as the raw material. After high-temperature oxidative roasting to remove impurities such as lead, cadmium and sulphur, it is compressed into pellets together with reducing coal and then reduced at high temperature in a furnace. The volatile zinc vapour is directly oxidised to zinc oxide by the carbon dioxide in the furnace gas and the introduced air.

   The above outlines the production process for ceramic-grade zinc oxide using the direct calcination method. Should you encounter any uncertainties during operation, please do not hesitate to contact us by telephone to avoid losses resulting from improper handling. Only by strictly adhering to the operating procedures can the desired results be achieved. We hope the information provided here proves helpful.