Process for obtaining a high purity zinc oxide by leaching Waelz oxide with ammonium carbonate solutions

摘要

Process for obtaining a high purity zinc oxide by leaching Waelz oxide with ammonium carbonate solutions. This invention takes advantage of the high zinc content of Waelz oxide, 40-60%, as a raw material for obtaining a high purity zinc oxide, the complexing effect of ammonium carbonate mainly with reference to zinc, and the ease with which this leaching agent can be regenerated and recycled to a subsequent leaching stage. IMAGE