| 摘要 |
FIELD: chemical technology. SUBSTANCE: method involves zinc oxide reduction obtained from industrial depleted materials containing zinc, lead, iron and cadmium. Method involves treatment of depleted materials with ammonium chloride at elevated temperature, separation of insoluble components from solution, solution treatment with metallic zinc to displace nondesirable metallic ions from solution followed by solution cooling to precipitate zinc compounds, washing precipitated zinc compounds to remove zinc diamine dichloride. Remained zinc compound is dried (i. e. zinc hydroxide) and pure zinc oxide is obtained. EFFECT: improved method of reduction. |
