SU258592A1 - The method of extraction of cadmium from sulfate solutions - Google Patents
The method of extraction of cadmium from sulfate solutionsInfo
- Publication number
- SU258592A1 SU258592A1 SU1197442A SU1197442A SU258592A1 SU 258592 A1 SU258592 A1 SU 258592A1 SU 1197442 A SU1197442 A SU 1197442A SU 1197442 A SU1197442 A SU 1197442A SU 258592 A1 SU258592 A1 SU 258592A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- extraction
- cadmium
- sulfate solutions
- iodine
- lead
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Известен способ экстракции кадми из сульфатных растворов, например полученных при сульфатизации свинцовых пылей раствором трибутилфосфата, содержащим йод, с добавлением сульфита натри .A known method for the extraction of cadmium from sulfate solutions, for example, lead dust dust obtained by sulfatizing a solution of tributyl phosphate containing iodine, with the addition of sodium sulfite.
Особенность предложенного способа заключаетс в том, что экстракцию ведут йодсодержащим раствором алифатических аминов в углеводородах. Способ обеспечивает селективное извлечение кадми и сокращение расхода реагентов.The peculiarity of the proposed method is that the extraction is carried out with iodine-containing solution of aliphatic amines in hydrocarbons. The method provides selective extraction of cadmium and reducing reagent consumption.
Сущность способа заключаетс в следующем .The essence of the method is as follows.
Раствор, полученный при переработке свинцовых пылей сульфатизацией, после экстракционного извлечени инди и талли поступает дл экстракции из него кадми в многоступенчатый противоточный аппарат щичного типа.The solution obtained during the processing of lead dusts by sulfatization, after extraction extraction of indium and thallium, is extracted for the extraction of cadmium from it into a multistage countercurrent apparatus of the slushy type.
Дл предотвращени образовани трех фаз при экстракции Б органическую фазу добавл ют 10-30% трибутилфосфата или высокомолекул рного спирта. При растворении йода в амине образуютс йодидные комплексы с амином:To prevent the formation of three phases during the extraction of B, the organic phase is added 10-30% of tributyl phosphate or high molecular weight alcohol. When iodine is dissolved in amine, iodide complexes with amine are formed:
R,N +1 R,N. I, (R,NI+) i- - (R,NI+) +1-вител . Процесс экстракции состоит из восьми ступеней.R, N +1 R, N. I, (R, NI +) i - - (R, NI +) + 1-wittel. The extraction process consists of eight steps.
Соотношение объемов фаз при экстракции О:В 1 : 1.The ratio of the volume of phases in the extraction of O: 1: 1.
Полученный органический экстракт кадми дл удалени соэкстрагирующих примесей промывают 250-350 г/дм серной кислоты при соотношении объемов фаз О : В 10 : 1 в две стадии, в результате чего содержание примесей в органике резко сокращаетс . Реэкстракцию кадми из органической фазы производ т 150-200 г/дм серной кислоты с добавлением перекиси водорода (3-5 вес. %) в качестве окислител дл йода. Полученный реэкстракт кадми нерерабатываетс по известной схеме, из него может быть получен металлический кадмий или соль кадми .The obtained organic cadmium extract is washed with 250-350 g / dm of sulfuric acid to remove coextractive impurities with a ratio of the volumes of the O: B phases of 10: 1 in two stages, as a result of which the content of impurities in organics is sharply reduced. Extraction of cadmium from the organic phase is produced by 150–200 g / dm of sulfuric acid with the addition of hydrogen peroxide (3-5 wt.%) As an oxidizing agent for iodine. The cadmium reextract obtained is not processed according to a known scheme, from which metallic cadmium or cadmium salt can be obtained.
Реэкстракт содержит 142 г/л кадми , из которого получают сульфат кадми следующего состава (в %):The reextract contains 142 g / l of cadmium, from which cadmium sulfate is obtained of the following composition (in%):
Кадмий48,1Cadmium48,1
Цинк0,05Zinc0.05
Свинец0,03Lead0.03
Медь0,0004Copper0,0004
Натрий0,005Sodium0.005
Кальций0,05 3 Таллий 0,002 Алюминий Не обнаружен . Предмет изобретени с А - с I п .3 и U 1J L 1 с п и и Снособ экстракции кадми из сульфатных5 растворов, например полученных при сульфа4 тизации свинцовых иылей, с ирименением органических экстрагентов, отличающийс ™ селективного извлечени кадми И уменьшени расхода реагентон, экстракцию ведут йодсодержащим раствором алифатических аминов и углеводородах.Calcium0.05 3 Thallium 0.002 Aluminum Not detected. The subject matter of the invention with A is with I p. 3 and U 1J L 1 with p and and Method for the extraction of cadmium from sulphate 5 solutions, for example, obtained by sulphating lead sludge, with organic extractants used, selective cadmium extraction and reduction of reagenton consumption, extraction lead iodine-containing solution of aliphatic amines and hydrocarbons.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1197442A SU258592A1 (en) | 1967-11-17 | 1967-11-17 | The method of extraction of cadmium from sulfate solutions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1197442A SU258592A1 (en) | 1967-11-17 | 1967-11-17 | The method of extraction of cadmium from sulfate solutions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU258592A1 true SU258592A1 (en) | 1974-12-25 |
Family
ID=20441423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU1197442A SU258592A1 (en) | 1967-11-17 | 1967-11-17 | The method of extraction of cadmium from sulfate solutions |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU258592A1 (en) |
-
1967
- 1967-11-17 SU SU1197442A patent/SU258592A1/en active
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