SU912637A1 - Process for purifying phosphoric acid from nickel - Google Patents
Process for purifying phosphoric acid from nickel Download PDFInfo
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- SU912637A1 SU912637A1 SU802894705A SU2894705A SU912637A1 SU 912637 A1 SU912637 A1 SU 912637A1 SU 802894705 A SU802894705 A SU 802894705A SU 2894705 A SU2894705 A SU 2894705A SU 912637 A1 SU912637 A1 SU 912637A1
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- USSR - Soviet Union
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- nickel
- extraction
- phosphoric acid
- acid
- organic phases
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- Manufacture And Refinement Of Metals (AREA)
Description
(54) СПОСОБ ОЧИСТКИ ФОСФОРНОЙ КИСЛОТЫ (54) METHOD FOR CLEANING PHOSPHORIC ACID
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Изобретение относитс к технологии очистки фосфорной кислоты от примесей металлов, в частности от никел , и может быть использовано в химической промышленности при очистке фосфорной кислоты. This invention relates to a process for the purification of phosphoric acid from metal impurities, in particular nickel, and can be used in the chemical industry for the purification of phosphoric acid.
Известен способ очистки фосфорной кислоты от никел путем ее обрйботки диоктилбензолсульфбкислотой с последующим отделением экстрагента от водной фазы ij..A known method of purification of phosphoric acid from nickel by treating it with dioctyl benzene sulphate acid, followed by separation of the extractant from the aqueous phase ij ..
Недостатком этого способа вл етс низка степень извлечени никел из фосфорнокислых растворов. . Известен также способ очистки фосфорной кислоты от никеЛ путем обработки ее ди-2-этилгексилдитиофосфорной кислотой ( Д2ЭГДТФК ) с по следующим разделением органической и водной фаз 2.:The disadvantage of this method is the low degree of extraction of nickel from phosphate solutions. . Also known is the method of purification of phosphoric acid from nickel by treating it with di-2-ethylhexyldithiophosphoric acid (D2 EHDTPA) with the following separation of the organic and aqueous phase 2 .:
Недостатком известного способа вл етс длительность, процесса до 12 ч.The disadvantage of this method is the duration of the process up to 12 hours.
Цель изобретени - интенсификаци процесса. .The purpose of the invention is to intensify the process. .
Поставленна цель, достигаетс тем, что согласно способу очистки фосфорной кислоты от никел , включающему ее обработку ди-2-этилгексилдитиофосфорной кислотой с послеОТ НИКЕЛЯThis goal is achieved by the fact that according to the method of purification of phosphoric acid from nickel, including its treatment with di-2-ethylhexyl dithiophosphoric acid after nickel
дующим разделением водной и органической фаз, обработку ведут в присутствии трибутилового фосфористой кислоты.blowing separation of the aqueous and organic phases, the treatment is carried out in the presence of tributyl phosphorous acid.
Трибутиловый эфир фосфористой кислоты.подают на обработку в количестве 10-20 об.% и процесс ведут при соотношении водной и органичес10 кой фаз, равном l:(0,5-l).Phosphorous acid tributyl ester. It is fed for processing in the amount of 10–20 vol% and the process is carried out with a ratio of aqueous and organic phases equal to l: (0.5 – l).
Это позвол ет сократить врем проведени процесса до 10-30 лтн.This makes it possible to reduce the process time to 10–30 ltn.
При подаче ТБЭФК меньше 10 об.% увеличиваетс продолжительность про15 цесса, а при подаче более 20 об.% возможно образование третьей фазы.When applying TFEFC less than 10 vol.%, The duration of the process increases, and when applying more than 20 vol.%, The formation of the third phase is possible.
Пример, В делительную воронку емкостью 400 мл, снабженную возвратно-поступательной мешалкой, Example: A 400 ml separatory funnel equipped with a reciprocating stirrer.
20 помещают 20 мл 75%-ной фосфорной кислоты, содержащей 1 г/л никел . Туда же приливают 20 мл 1 н. раствора Д2ЭГДТФК в гексане, в которую предварительно ввод т добавку трибутилового эфира фосфористой кислоты в количестве 20 об.%. Экстракцию ведут при комнатной температуре , соотношении.объемов водной(Увод) и органической ( Vopr) фаз, равном 20 placed 20 ml of 75% phosphoric acid containing 1 g / l of nickel. There is poured 20 ml of 1N. a solution of D2EGDTPA in hexane, into which an additive of phosphorous acid tributyl ester was previously introduced in an amount of 20% by volume. Extraction is carried out at room temperature, the ratio of the volume of water (drain) and organic (Vopr) phases, equal to
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU802894705A SU912637A1 (en) | 1980-03-18 | 1980-03-18 | Process for purifying phosphoric acid from nickel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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SU802894705A SU912637A1 (en) | 1980-03-18 | 1980-03-18 | Process for purifying phosphoric acid from nickel |
Publications (1)
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SU912637A1 true SU912637A1 (en) | 1982-03-15 |
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SU802894705A SU912637A1 (en) | 1980-03-18 | 1980-03-18 | Process for purifying phosphoric acid from nickel |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0085344A2 (en) * | 1982-01-28 | 1983-08-10 | Hoechst Aktiengesellschaft | Process for the removal of heavy metal ions from wet process phosphoric acid |
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1980
- 1980-03-18 SU SU802894705A patent/SU912637A1/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0085344A2 (en) * | 1982-01-28 | 1983-08-10 | Hoechst Aktiengesellschaft | Process for the removal of heavy metal ions from wet process phosphoric acid |
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