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| 含铱废料直接制备高纯铱粉的研究 |
| Study on Direct Preparation of High-Purity Iridium Powder from Iridium-containing Scraps |
| 投稿时间：2020-07-27 |
| DOI： |
| 中文关键词: 有色金属冶金 铱废料 制备 高纯铱粉 |
| 英文关键词: non-ferrous metallurgy iridium scraps; preparation high purity iridium powder |
| 基金项目:国家重点研发计划(2017YFB0305402)；云南省重大科技专项(2018ZE001，202002AB080001) |
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| 中文摘要: |
| 采用碱熔融活化溶解-氯化铵沉淀-硫化沉淀-氧化再沉淀-煅烧氢还原-混酸煮洗联合工艺，用铱废料直接制备高纯铱粉。结果表明，含铱废料经碱熔融水浸、王水溶解，得到的铱溶液通过氯化铵沉淀、硫化沉淀除杂，氧化再沉淀、煅烧-氢还原得到的金属铱经混酸煮洗，进一步去除杂质元素，获得纯度99.999%的高纯铱粉。 |
| 英文摘要: |
| The combined process of alkali fusion activation dissolution ammonium chloride precipitation - ammonium sulfide precipitation - oxidation reprecipitation - calcination and hydrogen reduction - mixed acid boiling wash was used to directly prepare high purity iridium powder from iridium scraps. The results showed that 99.999% of iridium powder was obtained after the iridium scraps were treated by the following processes. The iridium scraps were first performed alkali fusion-water leaching and aqua regia dissolving, and the obtained iridium solution was then added to ammonium chloride and ammonium sulfide to form precipitation for removing impurities, and the resulted precipitation was oxidized and reprecipitated, finally the precipitation was calcined and reduced by hydrogen to obtain iridium, and the obtained iridium was further purified by boiling in mixed acid. |
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