SU551254A1 - The method of producing ammonium cryolite - Google Patents
The method of producing ammonium cryoliteInfo
- Publication number
- SU551254A1 SU551254A1 SU2075024A SU2075024A SU551254A1 SU 551254 A1 SU551254 A1 SU 551254A1 SU 2075024 A SU2075024 A SU 2075024A SU 2075024 A SU2075024 A SU 2075024A SU 551254 A1 SU551254 A1 SU 551254A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- aluminum
- producing ammonium
- fluoride
- silica gel
- sulfuric acid
- Prior art date
Links
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
- C01F7/78—Compounds containing aluminium and two or more other elements, with the exception of oxygen and hydrogen
- C01F7/788—Ammonium aluminium fluorides, e.g. ammonium hexafluoroaluminate
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Description
1one
Изобретение относитс к способу получени аммонийного криолита, который примен етс в химической промышленности.This invention relates to a process for the preparation of ammonium cryolite, which is used in the chemical industry.
Известен способ получени аммонийного криолита путем обработки сульфата алюмини 5 раствором фтористого аммони с последующим отделением осадка, который обжигают в отдельности или после прибавлени гидроокиси алюмини . Недостатком способа вл етс использование товарных реактивовюA method of producing ammonium cryolite is known by treating aluminum sulphate 5 with a solution of ammonium fluoride, followed by separating the precipitate, which is calcined individually or after adding aluminum hydroxide. The disadvantage of this method is the use of commodity reagents.
Известен также способ получени аммонийного криолита путем взаимодействи фтористого аммони с алюминийсодержащим соединением, в качестве которого используют водный раствор фтористого алюмини с при- 15 мес ми окиси или гидроокиси алюмини . Обработку провод т многократно (2-4 раза) при нагревании раствора до . Полученный осадок отдел ют от раствора, сушат и обжигают20There is also known a method for producing ammonium cryolite by reacting ammonium fluoride with an aluminum-containing compound, which is used as an aqueous solution of aluminum fluoride with admixtures of aluminum oxide or aluminum hydroxide. The treatment is carried out repeatedly (2-4 times) by heating the solution to. The precipitate obtained is separated from the solution, dried and calcined.
Однако этот способ сложен и процесс ма- лоинтенсивен вследствии его многостадийности , низкое качество продукта, который содержит окись алюмини , а содержание основного вещества соответствует О2-03%.25However, this method is complicated and the process is low-intensive due to its multi-stage nature, the poor quality of the product, which contains alumina, and the content of the basic substance corresponds to O2-03% .25
Дл упрощени и интенсификации процесса и снижени примесей в продукте предложено в качестве алюминийсодержащего соединени Использовать кремнегель,содержащий 3-10 вес.% фтористого алюмини и процесс вести в присутствии серной кислоты при соотношении компонентов: кремнегель: серна кислота: фтористый аммоний, равном 1,О: (3,7-4 ,5):(3,3-4,0), предпочтительно 1:3,9:3,4To simplify and intensify the process and reduce impurities in the product, it was proposed to use silica gel containing 3-10% by weight aluminum fluoride as an aluminum-containing compound and conduct the process in the presence of sulfuric acid with a ratio of components: silica gel: sulfuric acid: ammonium fluoride, equal to 1, O : (3.7-4, 5) :( 3.3-4.0), preferably 1: 3.9: 3.4
Предложенный способ позвол ет упростить и интенсифипироватБ процесс за счет того, что его ведут в одну стадию, при температуре 8О-85°С, врем протекани реакции сокращаетс до 5О-8О мин при выходе продукта 92-95% и повысить качество продукта, который не содержит примеси окиси алюмини , а содержание основного вещества составл ет 96%.The proposed method allows to simplify and intensify the process due to the fact that it is carried out in one stage, at a temperature of 8 ° -85 ° C, the reaction time is reduced to 5O-8O minutes with a product yield of 92-95% and improve the quality of the product, which is not contains alumina impurities, and the content of the basic substance is 96%.
П р и М ер. В емкости смещивают при ЗО-С 155 г 25%-ного раствора фтористого аммони (1,05 избыток от стехиометрии ; 35,4г 97%-ной серной кислоты (l,05 избыток от стех;иометрии) и 50 г кремнегел при следующем соотнощении компонентов, %: двуокиси кремни 2О, фтора 4, алюмини Pr and M er. At the ZO-S, 155 g of a 25% ammonium fluoride solution (1.05 excess from stoichiometry; 35.4 g of 97% sulfuric acid (l, 05 excess from stoichiometry; iometry) and 50 g of silica gel are displaced in the tank at the following ratio components,%: silica 2O, fluorine 4, aluminum
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU2075024A SU551254A1 (en) | 1974-11-11 | 1974-11-11 | The method of producing ammonium cryolite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU2075024A SU551254A1 (en) | 1974-11-11 | 1974-11-11 | The method of producing ammonium cryolite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU551254A1 true SU551254A1 (en) | 1977-03-25 |
Family
ID=20600719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU2075024A SU551254A1 (en) | 1974-11-11 | 1974-11-11 | The method of producing ammonium cryolite |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU551254A1 (en) |
-
1974
- 1974-11-11 SU SU2075024A patent/SU551254A1/en active
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