SU196217A1 - METHOD OF OBTAINING DICALCTIONS OF PHOSPHATE INTO SECOND '^ n11, "';:. ':. ::, and - Google Patents
METHOD OF OBTAINING DICALCTIONS OF PHOSPHATE INTO SECOND '^ n11, "';:. ':. ::, andInfo
- Publication number
- SU196217A1 SU196217A1 SU1037017A SU1037017A SU196217A1 SU 196217 A1 SU196217 A1 SU 196217A1 SU 1037017 A SU1037017 A SU 1037017A SU 1037017 A SU1037017 A SU 1037017A SU 196217 A1 SU196217 A1 SU 196217A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- phosphate
- dicalctions
- obtaining
- stirring
- crystalline
- Prior art date
Links
- NBIIXXVUZAFLBC-UHFFFAOYSA-K [O-]P([O-])([O-])=O Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 title 1
- 239000010452 phosphate Substances 0.000 title 1
- 239000000243 solution Substances 0.000 description 10
- 239000001506 calcium phosphate Substances 0.000 description 7
- 238000003756 stirring Methods 0.000 description 7
- NEFBYIFKOOEVPA-UHFFFAOYSA-K Dicalcium phosphate Chemical compound [Ca+2].[Ca+2].[O-]P([O-])([O-])=O NEFBYIFKOOEVPA-UHFFFAOYSA-K 0.000 description 6
- 235000019739 Dicalciumphosphate Nutrition 0.000 description 6
- 229910000390 dicalcium phosphate Inorganic materials 0.000 description 6
- 229940038472 dicalcium phosphate Drugs 0.000 description 6
- 239000005696 Diammonium phosphate Substances 0.000 description 5
- 239000002253 acid Substances 0.000 description 5
- YLOZVEBTKJNEIS-UHFFFAOYSA-L calcium;dihydrogen phosphate;chloride Chemical compound Cl.[Ca+2].OP([O-])([O-])=O YLOZVEBTKJNEIS-UHFFFAOYSA-L 0.000 description 5
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 description 5
- 229910000388 diammonium phosphate Inorganic materials 0.000 description 5
- 235000019838 diammonium phosphate Nutrition 0.000 description 5
- 239000000725 suspension Substances 0.000 description 5
- VHUUQVKOLVNVRT-UHFFFAOYSA-N ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 4
- 239000000908 ammonium hydroxide Substances 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 229910052588 hydroxylapatite Inorganic materials 0.000 description 3
- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical compound [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 150000007513 acids Chemical class 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 235000021317 phosphate Nutrition 0.000 description 2
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 240000004259 Datura metel Species 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H Tricalcium phosphate Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910000389 calcium phosphate Inorganic materials 0.000 description 1
- 235000011010 calcium phosphates Nutrition 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000005712 crystallization Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- -1 phosphoric Chemical class 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 230000001376 precipitating Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000754 repressing Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000002194 synthesizing Effects 0.000 description 1
Description
Изобретение относитс к способу получени кристаллического дикальцийфосфата, используемого при синтезе люминофоров.The invention relates to a process for the preparation of crystalline dicalcium phosphate used in the synthesis of phosphors.
Известно получение мелкокристаллического дикальцийфосфата путем смешени растворов хлористого кальци и диаммонийфосфата при перемешивании и температуре около 20°С.It is known to produce fine crystalline dicalcium phosphate by mixing solutions of calcium chloride and diammonium phosphate with stirring at a temperature of about 20 ° C.
Дл получени однородных крупных кристаллов необходимого размера предложено проводить процесс осаждени аморфного фосфата кальци в присутствии гидроокиси аммони с последующим пореподом его в кристаллический дикальциифосфат п ирисутстBinj минеральных кислот, например ортофосфорной , сол ной. При проведении осаждени необходимо исходить из неподкисленных раствЬров . При смешении и перемешивании растворов хлористого кальци и диаммонийфосфата в. присутствии гидроокиси аммони осаждаетс смесь аморфных фосфатов, в основном гидроксилапатит 3 In order to obtain homogeneous large crystals of the required size, it has been proposed to carry out the process of precipitating amorphous calcium phosphate in the presence of ammonium hydroxide, followed by repressing it in crystalline dicalcium phosphate of mineralized Binj mineral acids, such as phosphoric, hydrochloric. When carrying out the precipitation, it is necessary to proceed from unsubstituted solutions. By mixing and stirring solutions of calcium chloride and diammonium phosphate c. the presence of ammonium hydroxide precipitates a mixture of amorphous phosphates, mainly hydroxylapatite 3
Саз(РО4)2-Са(ОН)2.Saz (PO4) 2-Ca (OH) 2.
с целью получени однородных кристаллов после подкислени перемешивание прекрашают . Кристаллы необходимого размера получают подбором соотношени между количеством гидроокиси аммони и кислоты, а также между хлористым кальцием и диаммонийфосфатом . Размер кристаллов зависит и от температуры , при которой перевод т аморфныеin order to obtain uniform crystals after acidification, the stirring is stopped. The crystals of the required size are obtained by selecting the ratio between the amount of ammonium hydroxide and acid, as well as between calcium chloride and diammonium phosphate. The size of the crystals also depends on the temperature at which amorphous
фосфаты в кристаллический дикальциифосфат .; :1 Полученный продукт отфильтровывают и промывают водой. Отлотый осадок сушат и используют дл прнготосленн люминофоров.phosphates in crystalline dicalcium phosphate .; : 1 The resulting product is filtered and washed with water. The scum is dried and used for phosphorus phosphors.
Пример 1. К 82 А 20%-iioro раствора CaCIa с температурой 90-95°С при перемешивании приливагот 210 л 20л/о-ного раствора (NH4)2HP04 и 12 л 250/0-110ГО раствораExample 1. K 82 A 20% -iioro CaCIa solution with a temperature of 90-95 ° С with stirring tide of 210 l of 20 l / o-th solution of (NH4) 2HP04 and 12 l of 250 / 0-110GO solution
NH.,OH. Температура суспензии поднимаетс до 90С, после этого в нее добавл ют 12 л концентрированной Н;,Р04 (d 1,56 г/смз). После добавлени кислоты меиталку отключают и суспензию выдерживают при нагреваНИИ в течение 10-15 мин.NH., OH. The temperature of the suspension rises to 90 ° C, after which 12 liters of concentrated H; PO04 (d 1.56 g / cm 3) are added to it. After the addition of the acid, the metel is turned off and the suspension is kept under heating in the course of 10-15 minutes.
Кристаллический CaHPOt отжимают на фильтре от маточного раствора и промывают водой. Затем осадок сушат и используют дл приготовлени люминофоров.Crystalline CaHPOt is drained from the mother liquor on the filter and washed with water. The precipitate is then dried and used to prepare phosphors.
Пример 2. К 160 л 2(}п/о- ого раствора приливают 2 л 25%-ного раствора и после этого npir перемешивании подают 200 л 20%-ного раствора (NH4)2HPO4. Суспензию при перемешивании разбавл ют 300 л воды, телгпература поднимаетс до 70°С, по достижении которой к суспензии приливают 2-3 л НзР04 {d 1,72 г/смз). После добавлени .кислоты суспензию выдерживают, перемешива , при 70-90°С в течение 30 мин.Example 2. To 160 l 2 (} of a p / o solution, 2 l of a 25% solution is poured, and then npir stirring is fed 200 l of a 20% aqueous solution (NH4) 2HPO4. The suspension is diluted with stirring with 300 l of water, The temperate temperature rises to 70 ° C, after reaching which 2-3 liters of HzP04 {d 1.72 g / cm3) are added to the suspension. After adding the acid, the suspension is kept stirring at 70-90 ° C for 30 minutes.
Кристаллический CaHPOi промывают, отжимают и сушат.The crystalline CaHPOi is washed, drained and dried.
Пр едмет изобретени Prilmet invention
Способ получени дикальцийфосфата путем смешени растворов хлористого кальци и диаммонийфосфата, отличающийс тем, что, с целью Получени крупнокристаллического продукта, смешение растворов хлористого кальци и диаммонийфосфата провод т в присутствии гидрата окиси аммони с последующей кристаллизацией дикальцийфосфата при нагревании в присутствии минеральных кислот, например ортофосфорной, сол ной.The method of producing dicalcium phosphate by mixing solutions of calcium chloride and diammonium phosphate, characterized in that, in order to obtain a large-crystalline product, the mixing of solutions of calcium chloride and diammonium phosphate is carried out in the presence of ammonium hydroxide followed by crystallization of dicalcium phosphate by heating in the presence of mineral acids. Noah.
колонка строкаcolumn row
1 24-25гидроксилапатит 31 24-25 hydroxylapatite 3
Саз(Р04),-Са(ОН).Saz (P04), Ca (OH).
ОпечаткаTypo
следует читатьshould read
напечатаноprinted
гидроксилапатит 3 Саз(РО4)2-Са(ОН),..hydroxylapatite 3 Saz (PO4) 2-Sa (OH), ..
Publications (1)
| Publication Number | Publication Date |
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| SU196217A1 true SU196217A1 (en) |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2730456C1 (en) * | 2019-11-20 | 2020-08-24 | Общество с ограниченной ответственностью "Научно-производственное объединение ЕВРОХИМ" | Method of producing amorphous tricalcium phosphate |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2730456C1 (en) * | 2019-11-20 | 2020-08-24 | Общество с ограниченной ответственностью "Научно-производственное объединение ЕВРОХИМ" | Method of producing amorphous tricalcium phosphate |
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