SU282649A1 - METHOD OF RESTORING ALUMINUM SODIUM - Google Patents
METHOD OF RESTORING ALUMINUM SODIUMInfo
- Publication number
- SU282649A1 SU282649A1 SU1133771A SU1133771A SU282649A1 SU 282649 A1 SU282649 A1 SU 282649A1 SU 1133771 A SU1133771 A SU 1133771A SU 1133771 A SU1133771 A SU 1133771A SU 282649 A1 SU282649 A1 SU 282649A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- sodium
- restoring
- aluminum sodium
- aluminum
- alumina
- Prior art date
Links
- -1 ALUMINUM SODIUM Chemical compound 0.000 title 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N AI2O3 Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 6
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 description 6
- IYJYQHRNMMNLRH-UHFFFAOYSA-N Sodium aluminate Chemical compound [Na+].O=[Al-]=O IYJYQHRNMMNLRH-UHFFFAOYSA-N 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 229910001388 sodium aluminate Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 238000006011 modification reaction Methods 0.000 description 3
- KEAYESYHFKHZAL-UHFFFAOYSA-N sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 235000013024 sodium fluoride Nutrition 0.000 description 3
- 239000011775 sodium fluoride Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910001948 sodium oxide Inorganic materials 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000002194 synthesizing Effects 0.000 description 1
Description
Насто щее изобретение относитс к области металлургии легких металлов и, в частности, к разработке способа восстановлени алюмината натри .The present invention relates to the field of metallurgy of light metals and, in particular, to the development of a method for the reduction of sodium aluminate.
Известен способ восстановлени алюмината натри избытком алюмини при остаточном давлении не более 0,8 мм рт. ст. и температуре не ниже 1100°С.A known method of reducing sodium aluminate with an excess of aluminum at a residual pressure of not more than 0.8 mmHg. Art. and temperature not lower than 1100 ° С.
Предложенный способ отличаетс тем, что в шихту добавл ют до 5% фтористого натри . Это дает возможность получать чистый натрий и а-модификацию глинозема чистотой не менее 95%.The proposed method is characterized in that up to 5% sodium fluoride is added to the mixture. This makes it possible to obtain pure sodium and α-modification of alumina with a purity of at least 95%.
Дл осуш,ествлени способа к кристаллическому алюминату натри , полученному гидрохимическим синтезом и содержаш;ему 29,5% окиси натри и 53,6% окиси алюмини , добавл ют алюминиевый порошок с избытком не более 50% от стехиометрического количества и фтористый натрий с размером частичек не более 140 ж/с в количестве 3-5% веса шихты , массу перемешивают 30-40 мин и прессуют в брикеты при давлении 210 кг/см с выдержкой 5-10 мин. Брикеты восстанавливаЮТ в печи в течение 3-5 час при остаточном давлении 0,8 мм рт. ст. и температуре 1000°С.To dry the process, crystalline sodium aluminate obtained by hydrochemical synthesis and containing 29.5% sodium oxide and 53.6% aluminum oxide is added aluminum powder with an excess of not more than 50% of the stoichiometric amount and sodium fluoride with a particle size no more than 140 w / s in the amount of 3-5% of the weight of the mixture, the mass is mixed for 30-40 minutes and pressed into briquettes at a pressure of 210 kg / cm with a holding time of 5-10 minutes. The briquettes are restored in an oven for 3-5 hours at a residual pressure of 0.8 mm Hg. Art. and a temperature of 1000 ° C.
Полученный в остатке глинозем соответствует группе «А ГОСТа и имеет следуюший состав: а-А120з-95-96%, А1-1,5-2%, NaaO - 0,5-0,6%; потери при прокаливании 1-1,5%- Этот глинозем не гигроскопичен, устойчив в концентрированных кислотах и щелочах, плавитс выше 2050°С, т. е. по свойствам приближаетс к природному корунду . Выход а-модификации глинозема составл ет 97-99%.The alumina obtained in the residue corresponds to the group “A of GOST and has the following composition: a-A1203-95-96%, A1-1.5-2%, NaaO - 0.5-0.6%; loss on ignition 1–1.5% - This alumina is not hygroscopic, it is stable in concentrated acids and alkalis, it melts above 2050 ° C, i.e. by its properties it approaches natural corundum. The yield of the a-alumina modification is 97-99%.
Полученный конденсат представл ет собой чистый монолитный натрий.The resulting condensate is pure monolithic sodium.
Предмет изобретени Subject invention
Способ восстановлени алюмината натри алюминием, вз тым с избытком не более 50%, при остаточном давлении не более 0,8 мм рт. ст. и температуре 1000-1100°С, отличающийс тем, что, с целью получени чистых сс-модификаций глинозема и натри , в шихту добавл ют до 5% фтористого натри .A method of reducing sodium aluminate with aluminum, taken with an excess of not more than 50%, with a residual pressure of not more than 0.8 mm Hg. Art. and a temperature of 1000-1100 ° C, characterized in that, in order to obtain pure cc modifications of alumina and sodium, up to 5% sodium fluoride is added to the mixture.
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU843718032A Addition SU1200470A2 (en) | 1984-03-29 | 1984-03-29 | Machining lathe center |
Publications (1)
Publication Number | Publication Date |
---|---|
SU282649A1 true SU282649A1 (en) |
Family
ID=
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN101861323B (en) | Double (oxalic acid) lithium borates (LiBOB) being completely dissolved of crystallization | |
SU282649A1 (en) | METHOD OF RESTORING ALUMINUM SODIUM | |
KR102300441B1 (en) | Manufacturing method for high-purity crystallization of lithium difluorophosphate with excellent solubility and Non-aqueous electrolyte for secondary battery | |
CN114524422A (en) | Preparation method of lithium bis (fluorosulfonyl) imide | |
JPS6024103B2 (en) | Method for producing 1H-tetrazole-1-acetic acid or its ester | |
Tanaka et al. | Process stages during solution combustion synthesis of strontium aluminates | |
CN85100218A (en) | Method for preparing alumina by hydrolysis of low carbon aluminum alkoxide | |
HU185317B (en) | Process for isomerizing ergoline derivatives | |
JPH01167394A (en) | Fluorescent substance | |
SU530015A1 (en) | Charge for making transparent spinel | |
SU190579A1 (en) | ||
CN107903302B (en) | Preparation method of gamma-lactam bridged dipeptide compound | |
US4065550A (en) | Process for preparing lithium hexafluoroarsenate of high purity | |
RU1803474C (en) | Charge for start-up of aluminium electrolyzer | |
JPH06199747A (en) | Production of l-alaninol | |
GB2033369A (en) | Alumina Cement | |
WO2022097813A1 (en) | Method for preparing ester compound based on eco-friendly and high-efficiency esterification reaction using salt ion-exchange method, and compound thereof | |
SU899507A1 (en) | Batch for making ceramic material | |
RU2034783C1 (en) | METHOD OF PRODUCING OF LITHIUM α-ALUMINATE | |
SU742422A1 (en) | Method of preparing c3-c4 aluminium alcoxides | |
RU1836462C (en) | Procedure of processing of aluminium electrolysis wastes | |
SU129647A1 (en) | The method of obtaining boron nitride | |
SU208859A1 (en) | METHOD FOR PREPARING LUMINOPHOR BASED ON CALCIUM HALOPOSPHATE | |
JP3263428B2 (en) | Method for producing aluminate of guanidine compound | |
RU2114785C1 (en) | Method for production of aluminium hydroxide |