SU479376A1 - Method of refining molybdenum- and tungsten-containing solutions by electrodialysis - Google Patents
Method of refining molybdenum- and tungsten-containing solutions by electrodialysis Download PDFInfo
- Publication number
- SU479376A1 SU479376A1 SU731980642A SU1980642A SU479376A1 SU 479376 A1 SU479376 A1 SU 479376A1 SU 731980642 A SU731980642 A SU 731980642A SU 1980642 A SU1980642 A SU 1980642A SU 479376 A1 SU479376 A1 SU 479376A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- exchange membrane
- tungsten
- electrodialysis
- solutions
- cation
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000000909 electrodialysis Methods 0.000 title claims abstract description 7
- MGRWKWACZDFZJT-UHFFFAOYSA-N molybdenum tungsten Chemical compound [Mo].[W] MGRWKWACZDFZJT-UHFFFAOYSA-N 0.000 title 1
- 238000007670 refining Methods 0.000 title 1
- 238000000746 purification Methods 0.000 claims abstract description 9
- 239000003011 anion exchange membrane Substances 0.000 claims abstract description 7
- 238000005341 cation exchange Methods 0.000 claims abstract description 7
- 239000012528 membrane Substances 0.000 claims abstract description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 claims description 2
- 235000018660 ammonium molybdate Nutrition 0.000 abstract description 10
- 229910052750 molybdenum Inorganic materials 0.000 abstract description 10
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 abstract description 9
- APUPEJJSWDHEBO-UHFFFAOYSA-P ammonium molybdate Chemical compound [NH4+].[NH4+].[O-][Mo]([O-])(=O)=O APUPEJJSWDHEBO-UHFFFAOYSA-P 0.000 abstract description 8
- 229940010552 ammonium molybdate Drugs 0.000 abstract description 8
- 239000011609 ammonium molybdate Substances 0.000 abstract description 8
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 abstract description 6
- 239000011733 molybdenum Substances 0.000 abstract description 6
- 229910052721 tungsten Inorganic materials 0.000 abstract description 5
- 239000010937 tungsten Substances 0.000 abstract description 5
- 239000000243 solution Substances 0.000 description 16
- 239000012535 impurity Substances 0.000 description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 5
- 229910052783 alkali metal Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 239000011701 zinc Substances 0.000 description 4
- 150000001340 alkali metals Chemical class 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- -1 alkali metal cations Chemical class 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- PBYZMCDFOULPGH-UHFFFAOYSA-N tungstate Chemical compound [O-][W]([O-])(=O)=O PBYZMCDFOULPGH-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000009854 hydrometallurgy Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 239000011550 stock solution Substances 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
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
СПОСОБ ОЧИСТКИ МОЛИБДЕН- И ВОЛЬФРАМСОДЕРЖАЩИХ РАСТВОРОВ ЭЛЕКТРОДИАЛИЗОМ с использованием ка- тионообменной мембраны, отличающийс тем, что, с целью повышени степени очистки вольфраматов и молибдатов аммони , процесс осуществл ют с высокоосновной анионообменной мембраной при плотности тока 150-250 А/м*, температуре 30- 35°С, линейной скорости потока 3—3,5 см/с.A method for purifying molybdenum and tungsten-containing solutions by electrodialysis using a cation-exchange membrane, characterized in that, in order to increase the degree of purification of tungstates and ammonium molybdates, the process with the current anion-exchange membrane using an anion-exchange membrane, using a cation-exchange membrane and using ammonium molybdates, using a cation-exchange membrane with a cation-exchange membrane and an ammonium molybdate membrane; - 35 ° C, linear flow rate of 3-3.5 cm / s.
Description
1one
VO Ы 1VO S 1
OS Изобретение относитс к гидрометаллургии молибдена и вольфрама, а именно к способам очистки растворов молибдата и вольфра мата аммони от примесей катионов электродиализом . Известен способ очистки молибден- и вольфрамсодержаших растворов от катионов щелочных металлов, например натри , электродиализом с использованием катионообменной мембраны. Однако известным способом невозможно достичь достаточно высокой степени очистки Производственных растворов вольфрамата и молибдата аммони от примесей. Предлагаемый способ отличаетс тем, что процесс электродиализа осуществл ют с использованием высокоосновной анионообменной мембраны при плотности тока 150-250 А/м, температуре 30-35°С, линейной скорости потока 3-3,5 см/с. Это позвол ет повысить степень очистки растворов вольфрамата и молибдата аммони от примесей металлов. Способ заключаетс в следующем. В растворах, содержащих молибден и вольфрам , а также примеси Си, Zn, Fe, Ni, под действием тока происходит направленное движение катионов и анионов соответственно через кат ионообменную и анионообменную мембраны. В результате концентрирующие рас воры содержат до 96-97% Мо и 0,01% Си, а примесей и щелочных металлов не было об наружено. В обессоленном растворе молибдена остаетс до 3-4%, примесей также не обнаружено . П р и м е р 1. Исходные растворы молибдата аммони готов т выщелачиванием огарка по режимам, прин тым в производстве. Растворы, содержание 114 г/л Мо, а также примеси меди, цинка, железа, никел , свинца, щелочных металлов, подвергают очистке электродиализом при плотности тока 200 А/м, температуре 30°С, линейной скорости потока 3,5 см/с с чередующимис катионо- и анионообменными мембранами. Получают раствор, содержащий 90 г/л Мо и 0,01 г/л Си. Примесей железа, никел , цинка и щелочных металлов не обнаружено. Из аммиачных растворов выдел ют парамолибдат аммони , соответствующий требовани м ГОСТа. В концентрирующий раствор переходит 96-97% Мо, около 3-4% Мо остаетс в обессоленном растворе, который может быть использован в качестве исходного раствора дл концентрировани молибдена при очистке следующей порции. Пример 2. Растворы вольфрамата аммони , содержащие 120 г/л WO3, 0,2- 0,3 г/л Na, подвергают очистке при плотности тока 150 А/м, температуре 35°С, линейной скорости потока 3 см/сек с высокоосновными анионообменными мембранами. После проведени очистки в растворах вольфрамата аммонн примесей натри не обнаружено. Применение предлагаемого способа позвол ет проводить очистку растворов молибдата или вольфрамата аммони от всех присутствующих примесей металлов и получить молибдат аммони или вольфрамат аммони , соответствующий требовани м ГОСТа, без использовани дополнительных реагентов. Содержание примесей в конечном полученном продукте молибдата аммони , %: Fe 0,001; Zn 0,01; ,001; Са 0,003; Mg 0,001.OS The invention relates to hydrometallurgy of molybdenum and tungsten, and specifically to methods for purifying ammonium molybdate and tungsten mat solutions from cation impurities by electrodialysis. A known method of purification of molybdenum and tungsten-containing solutions from alkali metal cations, such as sodium, by electrodialysis using a cation-exchange membrane. However, in a known manner it is impossible to achieve a sufficiently high degree of purification of the Production solutions of tungstate and ammonium molybdate from impurities. The proposed method is characterized in that the electrodialysis process is carried out using a highly basic anion-exchange membrane at a current density of 150-250 A / m, a temperature of 30-35 ° C, a linear flow rate of 3-3.5 cm / s. This makes it possible to increase the degree of purification of solutions of tungstate and ammonium molybdate from metal impurities. The method is as follows. In solutions containing molybdenum and tungsten, as well as Cu, Zn, Fe, Ni impurities, under the action of current, cations and anions are directed, respectively, through the cat ion exchange and anion exchange membranes. As a result, concentrating solutions contain up to 96–97% Mo and 0.01% Cu, and impurities and alkali metals were not detected. In a desalted solution, molybdenum remains up to 3-4%; no impurities are also detected. PRI me R 1. Ammonium molybdate stock solutions are prepared by leaching the calcine according to the regimes adopted in production. Solutions, content of 114 g / l of Mo, as well as impurities of copper, zinc, iron, nickel, lead, alkali metals, are subjected to purification by electrodialysis at a current density of 200 A / m, a temperature of 30 ° C, a linear flow rate of 3.5 cm / s with alternating cationic and anion-exchange membranes. A solution is obtained containing 90 g / l Mo and 0.01 g / l Cu. No impurities of iron, nickel, zinc and alkali metals were detected. Ammonium paramolybdate, corresponding to the requirements of GOST, is isolated from ammoniacal solutions. 96-97% Mo passes into the concentrating solution, about 3-4% Mo remains in the desalted solution, which can be used as an initial solution for concentrating molybdenum during the purification of the next batch. Example 2. Ammonium tungstate solutions containing 120 g / l of WO3, 0.2-0.3 g / l of Na, are subjected to purification at a current density of 150 A / m, a temperature of 35 ° C, a linear flow rate of 3 cm / sec with highly basic anion-exchange membranes. After cleaning in ammonium tungstate solutions, no sodium impurities were detected. The application of the proposed method allows the purification of ammonium molybdate or ammonium tungstate solutions from all metal impurities present and to obtain ammonium molybdate or ammonium tungstate that meets the requirements of GOST without using additional reagents. The content of impurities in the final product obtained ammonium molybdate,%: Fe 0,001; Zn 0.01; , 001; Ca 0.003; Mg 0.001.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU731980642A SU479376A1 (en) | 1973-12-29 | 1973-12-29 | Method of refining molybdenum- and tungsten-containing solutions by electrodialysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU731980642A SU479376A1 (en) | 1973-12-29 | 1973-12-29 | Method of refining molybdenum- and tungsten-containing solutions by electrodialysis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU479376A1 true SU479376A1 (en) | 1985-10-23 |
Family
ID=20570879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU731980642A SU479376A1 (en) | 1973-12-29 | 1973-12-29 | Method of refining molybdenum- and tungsten-containing solutions by electrodialysis |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU479376A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10341727A1 (en) * | 2003-09-10 | 2005-04-28 | Starck H C Gmbh | Purification of ammonium metalate solutions |
| RU2505612C1 (en) * | 2012-06-28 | 2014-01-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Российский химико-технологический университет им. Д.И. Менделеева (РХТУ им. Д.И. Менделеева) | Method for removing molybdenum from tungsten-containing solutions |
| CN104789994A (en) * | 2015-04-09 | 2015-07-22 | 上海应用技术学院 | Preparation method of tungsten-silver alloy powder |
-
1973
- 1973-12-29 SU SU731980642A patent/SU479376A1/en active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10341727A1 (en) * | 2003-09-10 | 2005-04-28 | Starck H C Gmbh | Purification of ammonium metalate solutions |
| RU2505612C1 (en) * | 2012-06-28 | 2014-01-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Российский химико-технологический университет им. Д.И. Менделеева (РХТУ им. Д.И. Менделеева) | Method for removing molybdenum from tungsten-containing solutions |
| CN104789994A (en) * | 2015-04-09 | 2015-07-22 | 上海应用技术学院 | Preparation method of tungsten-silver alloy powder |
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