| REAGENT-ELECTROLYSIS METHOD OF REGENERATING NITRATE-AMMONIUM SOLUTION FOR REMOVING CADMIUM COATINGS | |
| 2023-08-10 | |
| 专利权人 | TURAEV D YU (TURA-Individual) |
| 申请日期 | 2023-08-10 |
| 专利号 | RU2823406-C1 |
| 成果简介 | NOVELTY - Invention relates to regeneration of nitrate-ammonium solution for removal of cadmium coatings by reagent-electrolysis method. Solution of phosphoric acid with concentration of 0.1–85 wt.% or a solution of ammonium dihydrophosphate with concentration of 1–200 g/l is added to the regenerated solution at pH=4–8, or their mixture in ratio of 1:10 to 10:1 in amount of 90–100% of stoichiometrically required for deposition of cadmium ions by phosphate ions. Precipitate of cadmium phosphate is separated from the filtrate, which is a regenerated nitrate-ammonium solution for removing cadmium coatings. Cadmium phosphate precipitate is mixed with a solution of phosphoric acid with concentration of 0.1–85 wt.% or with a solution of ammonium dihydrophosphate with concentration of 1–200 g/l or with a mixture thereof in ratio of 1:10 to 10:1 until complete dissolution. Residual concentration of cadmium ions of 0.1–0.5 g/l is achieved by electrolysis in the obtained solution. Solution purified from cadmium ions is reused for deposition of cadmium ions from the nitrate-ammonium solution for removing cadmium coatings. USE - Chemical or physical processes. ADVANTAGE - Invention enables to quickly regenerate a nitrate-ammonium solution for removing cadmium coatings while maintaining the concentration of the main component—nitrate ions available at the time of regeneration, by controlling residual concentration of cadmium ions and obtaining metal cadmium with high current output. 3 cl, 1 ex |
| IPC 分类号 | C23F-001/46 ; C23G-001/36 |
| 国家 | 俄罗斯 |
| 专业领域 | 材料科学 |
| 语种 | 英语 |
| 成果类型 | 专利 |
| 文献类型 | 科技成果 |
| 条目标识符 | http://119.78.100.226:8889/handle/3KE4DYBR/20879 |
| 专题 | 中国科学院新疆生态与地理研究所 |
| 作者单位 | TURAEV D YU (TURA-Individual) |
| 推荐引用方式 GB/T 7714 | TURAEV D YU. REAGENT-ELECTROLYSIS METHOD OF REGENERATING NITRATE-AMMONIUM SOLUTION FOR REMOVING CADMIUM COATINGS. RU2823406-C1[P]. 2023. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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