SU55775A1 - The method of obtaining aluminum fluoride - Google Patents

The method of obtaining aluminum fluoride

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Publication number
SU55775A1
SU55775A1 SU16015A SU16015A SU55775A1 SU 55775 A1 SU55775 A1 SU 55775A1 SU 16015 A SU16015 A SU 16015A SU 16015 A SU16015 A SU 16015A SU 55775 A1 SU55775 A1 SU 55775A1
Authority
SU
USSR - Soviet Union
Prior art keywords
aluminum fluoride
hydrofluoric acid
obtaining aluminum
fluoride
alumina
Prior art date
Application number
SU16015A
Other languages
Russian (ru)
Inventor
Г.В. Уставщикова
А.А. Чижик
Original Assignee
Г.В. Уставщикова
А.А. Чижик
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Г.В. Уставщикова, А.А. Чижик filed Critical Г.В. Уставщикова
Priority to SU16015A priority Critical patent/SU55775A1/en
Application granted granted Critical
Publication of SU55775A1 publication Critical patent/SU55775A1/en

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Description

Изобретение относитс  к области получени  фтористого алюмини .This invention relates to the field of producing aluminum fluoride.

Как известно, фтористый алюминий получаетс  растворением глинозема и глиноземных материалов в плавиковой кислоте. При этом обожженную глину обрабатывают 12%-и плавиковой кислотой, глинозем раствор ют в плавиковой кислоте с 10%-м избытком. Раствор нагревают до кипеии ; получающа с  AlFr ISHoO хорошо растворима в воде. Дл  более полного выделени  фтористого алюмини  раствор охлаждают до 0°. Примен юща с  плавикова  кислота получаетс  разложением плавикового шпата серной кислотой и всегда содержит кремнефтористоводородную кислоту.As is known, aluminum fluoride is produced by dissolving alumina and alumina materials in hydrofluoric acid. In this case, the baked clay is treated with 12% hydrofluoric acid, and the alumina is dissolved in hydrofluoric acid with a 10% excess. The solution is heated to boiling; The resulting AlFr ISHoO is highly soluble in water. For a more complete isolation of aluminum fluoride, the solution is cooled to 0 °. The hydrofluoric acid produced is obtained by decomposing fluorspar with sulfuric acid and always contains hydrofluoric acid.

Так как к AlF предъ вл ютс  высокие требовани  по содержанию в нем кремнекислот.ы, плавикова  кислота предварительно очищаетс  от кремнефтористоводород ой кислоты нейтрализацией содой. Но и после очистки плавиковой кислоты фтористый алюминий содержит 0,4-0,5% О..Since AlF has high requirements for its content of silicic acid, hydrofluoric acid is preliminarily purified from hydrogen fluoride hydrofluoric acid by neutralization with soda. But after the purification of hydrofluoric acid, aluminum fluoride contains 0.4-0.5% O.

Известен способ получени  растворов NHiF, содержащих минимальные количества кремнекислоты {до 0,1 г/л), нейтрализацией H2SiFe или смеси ееA known method for producing solutions of NHiF containing minimal amounts of silicic acid (up to 0.1 g / l) is neutralized by H2SiFe or its mixture

с HF аммиаком. Получающиес  таким образом растворы NH.F могут быть переработаны на высококачественный фтористый алюминий путем прибавлени  к раствору фтористого аммони  (при перемешивании) глинозема в количестве, требующемс  по стехиометрии .with HF ammonia. The resulting solutions of NH.F can be processed to high-quality aluminum fluoride by adding to the ammonium fluoride solution (with stirring) alumina in the amount required by stoichiometry.

Реакци  образовани  AlFg проходит прг: этом следующим образом:The reaction of the formation of AlFg passes prg: this as follows:

2NH4F--NHjHF., кип чении) 2NH,(OH), AIFg-bSNHjF-fH.O2NH4F - NHjHF., Boiling) 2NH, (OH), AIFg-bSNHjF-fH.O

Фтористый аммоний, при кип чении , снова дает кислую соль и т. д. Пульпа охлаждаетс  до комнатной температуры li соль отфильтровываетс . Получающа с  соль мало раствори .ма в воде и представл ет собой A1F.-3,5H2O. В маточнике остаютс  незначительные количества F.Ammonium fluoride, when boiling, again gives an acid salt, etc. The pulp is cooled to room temperature. The li salt is filtered. The resulting salt is little soluble in water and is A1F.-3.5H2O. Minor amounts of F remain in the mother liquor.

Таким образом, по предлагаемому способу в раствор фтористого аммони  прибавл етс  гидрат окиси алюмини , полученна  смесь нагреваетс  в течение 4-6 час. при температуре пор дка 100°, полученный раствор охлаждаетс  AlFs-S.oHjO, отдел етс  от маточника. Выдел ющийс  при нагревании растворов аммиак возвращаетс  в производство дл  получени  новых количеств NHjF.Thus, according to the proposed method, alumina hydrate is added to the ammonium fluoride solution, the resulting mixture is heated for 4-6 hours. at a temperature of about 100 ° C, the resulting solution is cooled with AlFs-S. oHjO, separated from the mother liquor. The ammonia released during the heating of the solutions is returned to production to produce new quantities of NHjF.

SU16015A 1938-04-13 1938-04-13 The method of obtaining aluminum fluoride SU55775A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU16015A SU55775A1 (en) 1938-04-13 1938-04-13 The method of obtaining aluminum fluoride

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU16015A SU55775A1 (en) 1938-04-13 1938-04-13 The method of obtaining aluminum fluoride

Publications (1)

Publication Number Publication Date
SU55775A1 true SU55775A1 (en) 1938-11-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU16015A SU55775A1 (en) 1938-04-13 1938-04-13 The method of obtaining aluminum fluoride

Country Status (1)

Country Link
SU (1) SU55775A1 (en)

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