唐瑜钟,陈志传,萧作平,童张法.二氯二氨锌的制备及性质[J].有色金属(冶炼部分),2011(8):52-55.
二氯二氨锌的制备及性质
Preparation and Property of Zinc Diammine Chloride
投稿时间:2010-11-10  
DOI:DOI:10.3969/j.issn.1007-7545.2011.08.014
中文关键词:  氯化铵  浸出  次氧化锌  二氯二氨锌
英文关键词:Ammonium chloride  Leaching  Secondary zinc oxide  Zinc diammine chloride
基金项目:
           
作者单位
唐瑜钟 广西大学
陈志传 深圳市危险废物处理站有限公司
萧作平 深圳市危险废物处理站有限公司
童张法 广西大学
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中文摘要:
      以次氧化锌为原料,经氨浸、除铁、深度除杂、结晶等工序制备二氯二氨锌(Zn(NH3)2Cl2)。结果表明,在NH4Cl浓度4 mol/L、NH4Cl与Zn的摩尔比4∶1、浸出温度70 ℃、浸出时间60 min的条件下,Zn浸出率高达99%以上。采用质量分数为27.5%的双氧水氧化除铁和锌粉置换可基本彻底除杂。对二氯二氨锌进行了主含量、XRD、SEM、TG-DSC分析验证,结果表明二氯二氨锌的纯度较高,晶形完整。
英文摘要:
      Zn(NH3)2Cl2 was prepared by the process of leaching secondary zinc oxide with ammonium chloride solution, deironization, deep impurity-removing and crystallization. The results showed that the zinc leaching rate was more than 99% under the conditions that the concentration of NH4Cl solution was 4 mol/L, the molar ratio (NH4Cl/Zn)was 4:1, the leaching temperature was 70 ℃, and the leaching time was 60 min. The impurities could be completely removed by 27.5% hydrogen peroxide solution oxidizing Fe and zinc powder displacement process. The prepared Zn(NH3)2Cl2 was characterized by chemical analysis, XRD, SEM and TG-DSC. The results showed Zn(NH3)2Cl2 was pure in integral crystalline form.
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