SU210374A1 - METHOD FOR CLEANING TELLURA - Google Patents
METHOD FOR CLEANING TELLURAInfo
- Publication number
- SU210374A1 SU210374A1 SU1099516A SU1099516A SU210374A1 SU 210374 A1 SU210374 A1 SU 210374A1 SU 1099516 A SU1099516 A SU 1099516A SU 1099516 A SU1099516 A SU 1099516A SU 210374 A1 SU210374 A1 SU 210374A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- tellurium
- solution
- tellura
- cleaning
- telluric acid
- Prior art date
Links
- 238000004140 cleaning Methods 0.000 title 1
- 229910052714 tellurium Inorganic materials 0.000 description 18
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 description 18
- KWYUFKZDYYNOTN-UHFFFAOYSA-M potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 10
- 239000000243 solution Substances 0.000 description 10
- MHAJPDPJQMAIIY-UHFFFAOYSA-N hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 8
- XHGGEBRKUWZHEK-UHFFFAOYSA-N telluric acid Chemical compound O[Te](O)(=O)=O XHGGEBRKUWZHEK-UHFFFAOYSA-N 0.000 description 8
- 150000001768 cations Chemical class 0.000 description 6
- 102000037197 Anion exchangers Human genes 0.000 description 5
- 108091006437 Anion exchangers Proteins 0.000 description 5
- QTBSBXVTEAMEQO-UHFFFAOYSA-M acetate Chemical group CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 4
- 235000011118 potassium hydroxide Nutrition 0.000 description 4
- 238000000746 purification Methods 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 125000004435 hydrogen atoms Chemical group [H]* 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating Effects 0.000 description 2
- WSFSSNUMVMOOMR-UHFFFAOYSA-N formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 239000003957 anion exchange resin Substances 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 235000019441 ethanol Nutrition 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative Effects 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- JNKJTXHDWHQVDL-UHFFFAOYSA-N potassiotellanylpotassium Chemical compound [K][Te][K] JNKJTXHDWHQVDL-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- BUGBHKTXTAQXES-UHFFFAOYSA-N selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 239000011669 selenium Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
Description
Известен способ очистки теллура путем перекристаллизации теллуровой кислоты.A known method of purification of tellurium by recrystallization of telluric acid.
Дл упрощени процесса и повышени чистоты теллура предложено раствор, содержащий щестивалентный теллур, последовательно обрабатывать сильнокислотным катионитом , например КУ-2 в водородной форме, сильноосновным анионитом, например ЭДЭ10П или АВ-17 в ацетатной форме и смесью этих ионитов, и из полученной теллуровой кислоты восстанавливать теллур известными методами.In order to simplify the process and increase the purity of tellurium, a solution containing schigivalent tellurium was proposed to be treated sequentially with a strongly acidic cation exchanger, for example KU-2 in the hydrogen form, with a strongly basic anion exchanger, for example, EDE10P or AB-17 in the acetate form and a mixture of these ion exchangers, and to recover from the obtained telluric acid tellurium by known methods.
Технический теллур окисл ют перекисью водорода в присутствии щелочи, например едкого кали, с образованием раствора теллурата щелочного металла; при этом в качестве окислител может быть использован раствор перекиси водорода любой концентрации, в частности техническа 27-ЗОо/о-на перекись, а в виде исходного сырь -теллур любого качества , структуры и дисперсности.Technical tellurium is oxidized with hydrogen peroxide in the presence of an alkali, such as caustic potash, to form a solution of alkali metal tellurium; at the same time, hydrogen peroxide solution of any concentration can be used as an oxidizer, in particular, technical 27-ZOo / o-peroxide, and tellurium of any quality, structure and dispersion as a raw material.
Мольное отношение КОН : Те в реакционной смеси составл ет 2:1, т. е. расход едкого кали составл ет 0,88 кг (в пересчете на 100% КОН) на 1 кг металлического теллура.The molar ratio of KOH: Te in the reaction mixture is 2: 1, i.e. the consumption of caustic potash is 0.88 kg (based on 100% KOH) per 1 kg of metallic tellurium.
массы до температуры 50-60°С во избежание интенсивного разложени перекиси водорода при высоких температурах и вспенивани реакционной массы.mass to a temperature of 50-60 ° C in order to avoid intensive decomposition of hydrogen peroxide at high temperatures and foaming of the reaction mass.
Расход перекиси водорода на 1 кг теллура составл ет в пересчете на HgOg около 4 кг, т. е. 120о/о от стехиометрического количества . Очистку теллура от примесей катионов, таThe consumption of hydrogen peroxide per 1 kg of tellurium is, in terms of HgOg, about 4 kg, i.e. 120 o / o of the stoichiometric amount. Purification of tellurium from impurities of cations,
ких как медь, свинец, серебро, железо, висмут, магний, щелочные и щелочно-земельные металлы , провод т обработкой раствора смолой в динамических услови х, т. е. пропусканием раствора через колонку со смолой КУ-2 в водородной форме со скоростью 1-2 мл/мин на 1 г смолы. Очистку теллура от примесей, присутствующих в растворе в виде анионов, таких как селен, сера, галогены, фосфор, мышь к и т. д., осуществл ют пропусканиемsuch as copper, lead, silver, iron, bismuth, magnesium, alkaline and alkaline earth metals, is carried out by treating the solution with a resin under dynamic conditions, i.e. passing the solution through a hydrogen column at a rate of 1 -2 ml / min per g resin. Purification of tellurium from impurities present in the solution in the form of anions, such as selenium, sulfur, halogens, phosphorus, mice, etc., is carried out by passing
очищенного на катионите раствора теллуровой кислоты через колонку с сильноосновным анионитом и со смесью катионита КУ-2 в водородной форме и сильноосновного анионита ЭДЭ-10П или АВ-17 в ацетатной форме; приa solution of telluric acid purified on cation exchanger through a column with a strongly basic anion exchange resin and with a mixture of cation exchanger KU-2 in the hydrogen form and a strongly basic anion exchanger EDE-10P or AV-17 in the acetate form; at
этом очистка достигаетс за счет вытеснени испар етс и может быть утилизирована конденсацией паров или их абсорбцией, цапример , водными растворами щелочей или аммиака . Выход очищенной теллуровой кислоты из теллурата кали составл ет ЭТо/д. Регенерацию катионита осуществл ют пропусканием через него Юо/о раствора серной кислоты; анионит регенерируют 10% раствором NaOH или , затем перевод т уксусной кислотой в ацетатную форму, после чего катионит и анионит вновь используют дл очистки теллуровой кислоты. Затем теллуровую кислоту восстанавливают до металла парами органических жидкостей (метилового и этилового спирта, формальдегида, ацетона и т. д.) при температуре 450-500°С или другими известными методами. Предмет изобретени Способ очистки теллура окислением технического теллура до теллурата, выделением и очисткой теллуровой кислоты с последующим восстановлением очищенного теллура, отличающийс тем, что, с целью упрощени процесса и повышени чистоты теллура, раствор, содержащий шестивалентный теллур, последовательно обрабатывают сильнокислотным катионитом в водородной форме, сильноосновным анионитом в ацетатной форме и смесью этих ионитов, и из полученной теллуровой кислоты восстанавливают теллур известными методами.this purification is achieved by displacing the evaporation and can be utilized by vapor condensation or absorption, for example, aqueous solutions of alkalis or ammonia. The yield of purified telluric acid from potassium telluride is ET / d. Regeneration of the cation exchanger is carried out by passing through it SO / a solution of sulfuric acid; the anion exchanger is regenerated with a 10% solution of NaOH or, then converted with acetic acid to an acetate form, after which the cationite and anion exchanger are again used to purify telluric acid. Then telluric acid is reduced to the metal by vapors of organic liquids (methyl and ethyl alcohol, formaldehyde, acetone, etc.) at a temperature of 450–500 ° C or by other known methods. Subject of the invention. A method for purifying tellurium by oxidizing technical tellurium to tellurium, isolating and purifying telluric acid, followed by restoring purified tellurium, characterized in that, in order to simplify the process and increase the purity of tellurium, the solution containing hexavalent tellurium is sequentially treated with a strongly acidic cation exchanger in hydrogen form, a strong base anion exchanger in the acetate form and a mixture of these ion exchangers, and tellurium is obtained from the resulting telluric acid using known methods.
Publications (1)
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SU210374A1 true SU210374A1 (en) |
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