RU2372411C1 - Processing method of fillings of positive lamels of iron-cadmic accumulators - Google Patents
Processing method of fillings of positive lamels of iron-cadmic accumulators Download PDFInfo
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- RU2372411C1 RU2372411C1 RU2008113733/02A RU2008113733A RU2372411C1 RU 2372411 C1 RU2372411 C1 RU 2372411C1 RU 2008113733/02 A RU2008113733/02 A RU 2008113733/02A RU 2008113733 A RU2008113733 A RU 2008113733A RU 2372411 C1 RU2372411 C1 RU 2372411C1
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- Prior art keywords
- solution
- cadmium
- iron
- leaching
- positive
- Prior art date
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- 238000003672 processing method Methods 0.000 title 1
- 229910052793 cadmium Inorganic materials 0.000 claims abstract description 16
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims abstract description 16
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000002386 leaching Methods 0.000 claims abstract description 12
- 238000000605 extraction Methods 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 9
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229940071106 ethylenediaminetetraacetate Drugs 0.000 claims abstract description 7
- 241000446313 Lamella Species 0.000 claims abstract description 5
- UEUXEKPTXMALOB-UHFFFAOYSA-J tetrasodium;2-[2-[bis(carboxylatomethyl)amino]ethyl-(carboxylatomethyl)amino]acetate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]C(=O)CN(CC([O-])=O)CCN(CC([O-])=O)CC([O-])=O UEUXEKPTXMALOB-UHFFFAOYSA-J 0.000 claims abstract 2
- WBYRVEAPTWYNOX-UHFFFAOYSA-N [Fe].[Cd] Chemical compound [Fe].[Cd] WBYRVEAPTWYNOX-UHFFFAOYSA-N 0.000 claims description 4
- 238000012856 packing Methods 0.000 claims description 4
- 230000001376 precipitating effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000005272 metallurgy Methods 0.000 abstract description 3
- 238000002360 preparation method Methods 0.000 abstract 1
- 238000004062 sedimentation Methods 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 3
- CXKCTMHTOKXKQT-UHFFFAOYSA-N cadmium oxide Inorganic materials [Cd]=O CXKCTMHTOKXKQT-UHFFFAOYSA-N 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- CFEAAQFZALKQPA-UHFFFAOYSA-N cadmium(2+);oxygen(2-) Chemical compound [O-2].[Cd+2] CFEAAQFZALKQPA-UHFFFAOYSA-N 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- FCMHCNHPFKGBPB-UHFFFAOYSA-J 2-[2-[bis(carboxylatomethyl)amino]ethyl-(carboxylatomethyl)amino]acetate cadmium(2+) Chemical compound [Cd++].[Cd++].[O-]C(=O)CN(CCN(CC([O-])=O)CC([O-])=O)CC([O-])=O FCMHCNHPFKGBPB-UHFFFAOYSA-J 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- PLLZRTNVEXYBNA-UHFFFAOYSA-L cadmium hydroxide Chemical compound [OH-].[OH-].[Cd+2] PLLZRTNVEXYBNA-UHFFFAOYSA-L 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 238000010668 complexation reaction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
Description
Изобретение относится к металлургии, а именно способам получения кадмия, и может быть использовано при переработке набивок положительных ламелей железо-кадмиевых аккумуляторов.The invention relates to metallurgy, and in particular to methods for producing cadmium, and can be used in the processing of packings of positive lamellas of iron-cadmium batteries.
В качестве прототипа выбран способ переработки никель-кадмиевого скрапа (патент КП №2164956), включающий выщелачивание кадмия с последующим его осаждением.As a prototype, a method for processing nickel-cadmium scrap was chosen (patent KP No. 2164956), including cadmium leaching with its subsequent deposition.
Недостатками способа являются недостаточно высокая степень извлечения кадмия и очень высокая степень опасности производства.The disadvantages of the method are not a high degree of cadmium extraction and a very high degree of production hazard.
При выщелачивании кадмия в аммиачной среде происходит образование комплексных катионов [Cd(NH3)4]2+ Железо также образует подобные аммиакаты, хотя и не в значительной степени, следовательно, невозможно обеспечить селективное извлечение кадмия.When cadmium is leached in an ammonia medium, complex cations [Cd (NH 3 ) 4 ] 2+ are formed. Iron also forms similar ammonia, although not to a significant degree, therefore, it is impossible to provide selective extraction of cadmium.
Применение аммиака ограничено его летучестью, резким едким запахом и ядовитостью паров.The use of ammonia is limited by its volatility, pungent odor and toxic fumes.
Техническими задачами, на решение которых направленно заявленное изобретение, являются повышение степени извлечения кадмия и безопасности производства.Technical problems, the solution of which the claimed invention is directed, are to increase the degree of cadmium extraction and production safety.
Указанные задачи решаются тем, что в способе переработки набивок положительных ламелей железо-кадмиевых аккумуляторов, включающем выщелачивание кадмия и последующее его извлечение из раствора, выщелачивание осуществляют раствором этилендиаминтетраацетата натрия при pH раствора 9,0-9,5, перед извлечением кадмия из раствора удаляют этилендиаминтетраацетат в молекулярном виде путем осаждения его серной кислотой при pH раствора 1,0-1,6 и направляют его на приготовление раствора для выщелачивания.These problems are solved by the fact that in the method of processing the packing of positive lamellas of iron-cadmium batteries, including leaching of cadmium and its subsequent extraction from the solution, leaching is carried out with sodium ethylene diamine tetraacetate solution at a pH of 9.0-9.5, ethylene diamine tetra acetate is removed from the solution before extraction in molecular form by precipitating it with sulfuric acid at a solution pH of 1.0-1.6 and directing it to prepare a solution for leaching.
Область комплексообразования этилендиаминтетраацетата с железом и кадмием находится в разных значениях pH среды: кадмия - в щелочной, а железа - в кислой. Следовательно, при применении щелочного раствора этилендиаминтетраацетата обеспечивается избирательное растворение оксида кадмия. При этом оксид железа практически в неизменном виде остается в твердой фазе.The complexation region of ethylenediaminetetraacetate with iron and cadmium is in different pH values: cadmium - in alkaline, and iron - in acidic. Therefore, when using an alkaline solution of ethylenediaminetetraacetate, selective dissolution of cadmium oxide is provided. In this case, iron oxide remains almost unchanged in the solid phase.
Выбор pH выщелачивания обусловлен устойчивостью кадмиево-этилендиаминтетраацетатного комплекса, максимум которой наблюдается в указанном диапазоне.The choice of leaching pH is due to the stability of the cadmium-ethylenediaminetetraacetate complex, the maximum of which is observed in the indicated range.
В кислой среде при pH раствора 1,0-1,6 этилендиаминтетраацетат приобретает молекулярную кислотную форму, практически не растворимую в воде, что позволяет удалить его полностью.In an acidic environment at a pH of a solution of 1.0-1.6, ethylenediaminetetraacetate takes on a molecular acid form that is practically insoluble in water, which allows it to be completely removed.
При pH раствора менее 1,0 и более 1,6 растворимость этилендиаминтетраацетата увеличивается, поэтому удаление его будет не полным. Способ осуществляли следующим образом.When the pH of the solution is less than 1.0 and more than 1.6, the solubility of ethylene diamine tetraacetate increases, so its removal will not be complete. The method was carried out as follows.
ПримерExample
Набивки положительных ламелей железо-кадмиевых аккумуляторов размером частиц класса 0,1 мм, содержащих CdO - 21,1%, Fe2O3 - 51,7%, графит - остальное, подвергали выщелачиванию в течение 2 часов в растворе Трилона Б (этилендиаминтетраацетата натрия) концентрацией 100-120 г/дм3 при Т:Ж=1:5 при pH раствора 9,0-9,5.Packings of positive lamellas of iron-cadmium batteries with a particle size of 0.1 mm class, containing CdO - 21.1%, Fe 2 O 3 - 51.7%, graphite - the rest, were leached for 2 hours in a solution of Trilon B (sodium ethylene diamine tetra acetate) ) with a concentration of 100-120 g / dm 3 at T: W = 1: 5 at a solution pH of 9.0-9.5.
После фильтрации кек промывали водой, а промводы объединяли с фильтратом.After filtration, the cake was washed with water, and the promoters were combined with the filtrate.
В полученный раствор добавляли серную кислоту до достижения pH 1,0-1,6. При этом получали осадок Трилона Б, который отфильтровывали и направляли на приготовление исходного раствора в головную операцию выщелачивания.Sulfuric acid was added to the resulting solution until a pH of 1.0-1.6 was reached. In this case, a precipitate of Trilon B was obtained, which was filtered and sent to prepare the initial solution in the head leaching operation.
После удаления Трилона Б из раствора извлекали кадмий известными способами.After removal of Trilon B from the solution, cadmium was recovered by known methods.
После удаления Трилона Б кадмийсодержащий раствор нейтрализовали концентрированным раствором NaOH до достижения pH 10 - 11, при котором осаждается гидроксид кадмия. Полученный осадок промывали водой и прокаливали при температуре 550°С. При этом получали оксид кадмия, соответствующий требованиям ГОСТ 11120-75.After removal of Trilon B, the cadmium-containing solution was neutralized with a concentrated NaOH solution until a pH of 10 - 11 was reached, at which cadmium hydroxide precipitated. The resulting precipitate was washed with water and calcined at a temperature of 550 ° C. In this case, cadmium oxide was obtained that meets the requirements of GOST 11120-75.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2008113733/02A RU2372411C1 (en) | 2008-04-11 | 2008-04-11 | Processing method of fillings of positive lamels of iron-cadmic accumulators |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2008113733/02A RU2372411C1 (en) | 2008-04-11 | 2008-04-11 | Processing method of fillings of positive lamels of iron-cadmic accumulators |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| RU2372411C1 true RU2372411C1 (en) | 2009-11-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RU2008113733/02A RU2372411C1 (en) | 2008-04-11 | 2008-04-11 | Processing method of fillings of positive lamels of iron-cadmic accumulators |
Country Status (1)
| Country | Link |
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| RU (1) | RU2372411C1 (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5851490A (en) * | 1995-05-11 | 1998-12-22 | Metals Recycling Technologies Corp. | Method for utilizing PH control in the recovery of metal and chemical values from industrial waste streams |
| SU716304A1 (en) * | 1978-09-20 | 1999-07-27 | Всесоюзный научно-исследовательский горно-металлургический институт цветных металлов "ВНИИЦВЕТМЕТ" | METHOD OF PROCESSING OF COPPER-CADMIUS KEKA |
| RU2164956C1 (en) * | 1999-10-11 | 2001-04-10 | Закрытое акционерное общество "Вторник" | Method of processing nickel-cadmium scrap |
| EP1187224A1 (en) * | 2000-09-11 | 2002-03-13 | ANTEC Solar GmbH | Recycling method for CdTe/CdS thin film solar cell modules |
| JP2006265672A (en) * | 2005-03-25 | 2006-10-05 | Nikko Kinzoku Kk | Method for leaching out cadmium |
| CN1899983A (en) * | 2006-07-22 | 2007-01-24 | 东北电力大学 | Method for treating industrial waste water containing cadmium using waste beer yeast |
| JP2007191782A (en) * | 2005-12-21 | 2007-08-02 | Nikko Kinzoku Kk | Method for producing cadmium |
-
2008
- 2008-04-11 RU RU2008113733/02A patent/RU2372411C1/en not_active IP Right Cessation
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU716304A1 (en) * | 1978-09-20 | 1999-07-27 | Всесоюзный научно-исследовательский горно-металлургический институт цветных металлов "ВНИИЦВЕТМЕТ" | METHOD OF PROCESSING OF COPPER-CADMIUS KEKA |
| US5851490A (en) * | 1995-05-11 | 1998-12-22 | Metals Recycling Technologies Corp. | Method for utilizing PH control in the recovery of metal and chemical values from industrial waste streams |
| RU2164956C1 (en) * | 1999-10-11 | 2001-04-10 | Закрытое акционерное общество "Вторник" | Method of processing nickel-cadmium scrap |
| EP1187224A1 (en) * | 2000-09-11 | 2002-03-13 | ANTEC Solar GmbH | Recycling method for CdTe/CdS thin film solar cell modules |
| JP2006265672A (en) * | 2005-03-25 | 2006-10-05 | Nikko Kinzoku Kk | Method for leaching out cadmium |
| JP2007191782A (en) * | 2005-12-21 | 2007-08-02 | Nikko Kinzoku Kk | Method for producing cadmium |
| CN1899983A (en) * | 2006-07-22 | 2007-01-24 | 东北电力大学 | Method for treating industrial waste water containing cadmium using waste beer yeast |
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| MM4A | The patent is invalid due to non-payment of fees |
Effective date: 20100412 |