发明名称 |
METHOD OF PRODUCTION OF METALLIC PALLADIUM |
摘要 |
<p>FIELD: production of pure metallic palladium of respective chemical form. SUBSTANCE: palladium-containing material is treated with aqua regia solution, palladium settles in form of chloropalladate salt due to treatment of aqua regia solution by ammonium chloride; pulp thus obtained is settled, cooled and filtered; sediment on filter is treated with ammonium chloride solution. Chloropalladate salt is settled by solid ammonium chloride and sediment on filter is treated by saturated ammonium hydrochloride; then sediment thus treated is dissolved in water and solution thus obtained is filtered, neutralized and palladium is reduced to metal by hydrazine hydrochloride at pH>=2 or formic acid at pH>=6. Metallic palladium is filtered, washed and dried at temperature of 90-100 C. Proposed method makes it possible to separate palladium in form of pure metal of respective chemical form at minimum losses at all stages ensuring separation of 96% of palladium-104 at degree of purification of 99.996% and 70% of natural palladium from wastes of isotopic process at degree of purification of 99.5% and 93% of natural palladium from waste aluminopalladium catalyst at degree of purification of 99.5%. EFFECT: enhanced efficiency; reduced power requirements. 3 cl, 7 ex</p> |
申请公布号 |
RU2210609(C1) |
申请公布日期 |
2003.08.20 |
申请号 |
RU20020127053 |
申请日期 |
2002.10.10 |
申请人 |
FEDERAL'NOE GOSUDARSTVENNOE UNITARNOE PREDPRIJATIE;EHLEKTROKHIMPRIBOR K |
发明人 |
POLJAKOV L.A.;TATARINOV A.N.;MONASTYREV JU.A.;IZOVSKAJA L.N.;KISELEVA T.G.;KONOPLINA L.JA.;VILKAJ E.A. |
分类号 |
C22B11/00;C22B3/06;C22B3/44;(IPC1-7):C22B11/00 |
主分类号 |
C22B11/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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