SU1622288A1 - Method of producing penta-lithium aluminate - Google Patents
Method of producing penta-lithium aluminate Download PDFInfo
- Publication number
- SU1622288A1 SU1622288A1 SU894632825A SU4632825A SU1622288A1 SU 1622288 A1 SU1622288 A1 SU 1622288A1 SU 894632825 A SU894632825 A SU 894632825A SU 4632825 A SU4632825 A SU 4632825A SU 1622288 A1 SU1622288 A1 SU 1622288A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- lithium
- yield
- sintering
- lithium aluminate
- increase
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 9
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 claims abstract description 4
- 229910052808 lithium carbonate Inorganic materials 0.000 claims abstract description 4
- 238000004519 manufacturing process Methods 0.000 claims abstract description 3
- 238000005245 sintering Methods 0.000 claims description 7
- FZRNJOXQNWVMIH-UHFFFAOYSA-N lithium;hydrate Chemical compound [Li].O FZRNJOXQNWVMIH-UHFFFAOYSA-N 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 2
- 229910052782 aluminium Inorganic materials 0.000 claims 2
- 150000002642 lithium compounds Chemical class 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract description 2
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 abstract 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 239000012300 argon atmosphere Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000009856 non-ferrous metallurgy Methods 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/04—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
- C01F7/043—Lithium aluminates
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
Изобретение относитс к производству литиевых соединений. Цель изобретени - повышение выхода и качества п тилитиево- го алюмината. Дл этого гидроксодиалюми- нат лити смешивают с карбонатом или гидроксидом лити и полученную смесь спекают при 650-900°С и остаточном давлении менее 10 мм рт.ст. в течение 60 мин. По сравнению с прототипом предложенный способ позвол ет в 1,5 раза увеличить выход готового продукта и повысить его качество за счет снижени в нем содержани непрореагировавших исходных компонентов шихты. 2 з.п.ф-лы, 1 табл.The invention relates to the production of lithium compounds. The purpose of the invention is to increase the yield and quality of p-Lithium aluminate. To this end, lithium hydroxodialylate is mixed with lithium carbonate or lithium hydroxide and the resulting mixture is sintered at 650-900 ° C and a residual pressure of less than 10 mm Hg. within 60 min. Compared with the prototype, the proposed method allows to increase the yield of the finished product by 1.5 times and improve its quality by reducing the content of unreacted initial charge components in it. 2 hp ff, 1 tab.
Description
Изобретение относитс к цветной металлургии , и может быть использовано в производстве литиевых соединений.The invention relates to non-ferrous metallurgy, and can be used in the manufacture of lithium compounds.
Цель изобретени - повышение выхода и качества п тилитиевого алюминатаThe purpose of the invention is to increase the yield and quality of p-lithium aluminate.
Пример 1 Исходный гидооксодиалю- минат лити (ГДАЛ) смешивают с карбонатом лити в стехиометрическом количестве. Полученную смесь перемешивают в барабанном смесителе в течение 10-15 мин и затем брикетируют на прессе в брикеты-цилиндры диаметром 16 мм и высотой 10 мм. Брикеты загружают в алундовый тигель, а затем - в вакуумную печь Синтез п тилитиевого алюмината ведут при 850°С и остаточном давлении 5 -102 мм рт ст. Подьем температуры до 850°С ведут пласно со скоростью 10°С/мин. После выхода на температурный режим печи реакционную смесь выдерживают при 850°С в течение 60 мин. Затем нагреватель отключают и довод т температуру в реакционной зоне печи до комнатной. Как показывает последующий рентгеновский анализ контрольных образцов , основной кристаллофазой вл етс /J-LisAI04, ее содержание в образце 90%, втора по значимости фаза -LIAl2 8%, оставшиес 2% - непрореагировавший 1(2СОз и продукты разложени ГДАЛа.Example 1 The starting lithium hydroxodialuminate (HDAL) is mixed with lithium carbonate in stoichiometric amount. The resulting mixture is stirred in a drum blender for 10-15 minutes and then briquetted on a press into briquettes-cylinders with a diameter of 16 mm and a height of 10 mm. Briquettes are loaded into an alundum crucible, and then into a vacuum furnace. Synthesis of p-lithium aluminate is carried out at 850 ° C and a residual pressure of 5-102 mm Hg. The temperature rise to 850 ° С is carried out at a rate of 10 ° С / min. After reaching the furnace temperature, the reaction mixture is kept at 850 ° C for 60 minutes. Then the heater is turned off and the temperature in the reaction zone of the furnace is brought to room temperature. As the subsequent X-ray analysis of the control samples shows, the main crystal phase is / J-LisAI04, its content in the sample is 90%, the second-most important phase is LIAl2 8%, the remaining 2% is unreacted 1 (2Co3 and the decomposition products of GDAL.
Пример 2. Исходный гидроксодиалю- минат лити смешивают с моногидратом лити в стехиометрическом количестве. Услови спекани такие же, как и в примере 1.Example 2. The initial lithium hydroxydialuminate is mixed with lithium monohydrate in stoichiometric amount. The sintering conditions are the same as in example 1.
Содержание /S-LlsAlO в образце составл ет 85%, y-LJAI02 10%; оставшиес 5% - непрореагировавший моногидрат лити и продукты разложени ГДАЛ.The content of / S-LlsAlO in the sample is 85%, y-LJAI02 10%; the remaining 5% is unreacted lithium monohydrate and decomposition products of HDL.
Вли ние температуры спекани и остаточного давлени на выход готового продукта иллюстрируетс данными таблицы, из которых видно, что увеличение остаточного давлени сверх 10 мм рт.ст. приводит к снижению выхода п тилитиевого алюмината.The effect of sintering temperature and residual pressure on the yield of the finished product is illustrated by the data in the table, from which it can be seen that an increase in residual pressure in excess of 10 mm Hg. leads to a decrease in the yield of p-lithium aluminate.
При синтезе п тилитиевого алюмината по известному способу при 740°С из оксидов лити и алюмини , вз тых в соотношении 9:1, в атмосфере аргона выход готового продукта не превышает 60%.During the synthesis of p-lithium aluminate by a known method at 740 ° C from lithium and aluminum oxides, taken in a ratio of 9: 1, in an argon atmosphere, the yield of the finished product does not exceed 60%.
Таким образом, предлагаемый способ по сравнению с известным позвол ет в 1,5 раза увеличить выход готового продукта - п тилитиевого алюмината и повысить его качество за счет уменьшени в нем содержани исходных непрореагировавших компонентов шихты.Thus, the proposed method, as compared with the known, allows to increase the yield of the finished product, p-lithium aluminate, by 1.5 times and improve its quality by reducing the content of the initial unreacted charge components in it.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU894632825A SU1622288A1 (en) | 1989-01-06 | 1989-01-06 | Method of producing penta-lithium aluminate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU894632825A SU1622288A1 (en) | 1989-01-06 | 1989-01-06 | Method of producing penta-lithium aluminate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU1622288A1 true SU1622288A1 (en) | 1991-01-23 |
Family
ID=21420734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU894632825A SU1622288A1 (en) | 1989-01-06 | 1989-01-06 | Method of producing penta-lithium aluminate |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU1622288A1 (en) |
-
1989
- 1989-01-06 SU SU894632825A patent/SU1622288A1/en active
Non-Patent Citations (1)
| Title |
|---|
| Stewner F.. Hoppe R Zur Kristallstruktur von tt-LisAIO/i.-Zeitschrift fur anorganische undallgemeine Chemie. 1971. Bd 380 S. 241- 243. * |
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