Extraction technology of purification of sulfate nickel solutions of impurities with the use of dialkylphosphine acid
| Autor: | A. D. Mikhnev, N. A. Grigor’eva, G. L. Pashkov, L. K. Nikiforova, I. Yu. Fleitlikh |
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| Rok vydání: | 2008 |
| Předmět: |
Materials science
Inorganic chemistry Extraction (chemistry) Metals and Alloys chemistry.chemical_element Diluent Surfaces Coatings and Films Nickel chemistry.chemical_compound chemistry Mechanics of Materials Impurity visual_art Metallic materials visual_art.visual_art_medium Composition (visual arts) Sulfate Charcoal |
| Zdroj: | Russian Journal of Non-Ferrous Metals. 49:9-13 |
| ISSN: | 1934-970X 1067-8212 |
| DOI: | 10.1007/s11981-008-1003-7 |
| Popis: | The data of laboratory investigations of the removal of impurities (Fe, Cu, Zn, Mg, Ca) from sulfate nickel solutions are presented. It is shown that Cyanex 272 [di(2,4,4-dimethylpenthyl)phosphinic acid] is the most efficient extractant. For two extraction steps by a nickel form of Cyanex 272 from a solution (after iron purification) that contained: Ni 120–130, Cu 0.8–1.0, Zn 3.0–4.0, Mg 1.5–2.0, Ca 0.4–0.8, and Fe 0.01–0.02 g/l, raffinates of the following composition are obtained: Ni 120–130, Cu, Zn, and Fe ≤ 2 × 10−3 each, Mg ≤ 0.1, and Ca 0.2–0.3 g/l. Purification of raffinates of organic impurities (extractant, diluent) after extraction is performed on the DAK-activated charcoal. Reextraction of metals and, correspondingly, extractant regeneration, is easily performed by solutions of mineral acids (H2SO4 and HNO3). Extraction of nickel from the solution at the extraction step is ≥99.8%. |
| Databáze: | OpenAIRE |
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