Abstract A technological process has been described for the preparation of active zinc oxide from crude zinc oxide by ammonia complex leaching method. The process included dissolving crude zinc oxide, purifying the solution, evaporating ammonia, precipitating zinc complex salt, washing, dehydrating, drying and calcining unit operation.High grade zinc oxide was produced by this process and the product was meet the criterion of HG/T72572��94.
XU Wen-lin, WANG Ya-qiong .Preparation Of Active Zinc Oxide from Crude Zinc Oxide by Ammonia Complex Leaching Technique[J] Chemcial Industry and Engineering, 2001,V18(6): 417-420
2001, Vol. 18 
