CS274941B2 - Method of precipitated calcium carbonate and calcium hydrogen phosphate production - Google Patents
Method of precipitated calcium carbonate and calcium hydrogen phosphate productionInfo
- Publication number
- CS274941B2 CS274941B2 CS596887A CS596887A CS274941B2 CS 274941 B2 CS274941 B2 CS 274941B2 CS 596887 A CS596887 A CS 596887A CS 596887 A CS596887 A CS 596887A CS 274941 B2 CS274941 B2 CS 274941B2
- Authority
- CS
- Czechoslovakia
- Prior art keywords
- hydrogen phosphate
- calcium
- calcium carbonate
- precipitated
- production
- Prior art date
Links
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 title abstract 5
- FUFJGUQYACFECW-UHFFFAOYSA-L calcium hydrogenphosphate Chemical compound [Ca+2].OP([O-])([O-])=O FUFJGUQYACFECW-UHFFFAOYSA-L 0.000 title abstract 3
- 235000019700 dicalcium phosphate Nutrition 0.000 title abstract 3
- 238000004519 manufacturing process Methods 0.000 title abstract 3
- 229940088417 precipitated calcium carbonate Drugs 0.000 title abstract 3
- 238000000034 method Methods 0.000 title abstract 2
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 abstract 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 abstract 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 abstract 1
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract 1
- 238000004140 cleaning Methods 0.000 abstract 1
- 239000003337 fertilizer Substances 0.000 abstract 1
- 239000012467 final product Substances 0.000 abstract 1
- 230000008014 freezing Effects 0.000 abstract 1
- 238000007710 freezing Methods 0.000 abstract 1
- 238000006386 neutralization reaction Methods 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 239000007790 solid phase Substances 0.000 abstract 1
- 230000006641 stabilisation Effects 0.000 abstract 1
- 238000011105 stabilization Methods 0.000 abstract 1
Landscapes
- Fertilizers (AREA)
Abstract
The solution consists in production of precipitated calcium carbonate and calcium hydrogen phosphate from calcium nitrate produced in production NPK fertilizers by freezing technology. The process is conducted in the following way: Raw calcium nitrate is mixed with precipitated calcium carbonate and after separation of the solid phase, calcium carbonate is precipitated. Its part is used for cleaning and the remaining quantity is processed to the final product, or it can also be used for neutralization of trihydrogen phosphoric acid, which results in origination of calcium hydrogen phosphate, which can be further treated by stabilization.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS596887A CS274941B2 (en) | 1987-08-13 | 1987-08-13 | Method of precipitated calcium carbonate and calcium hydrogen phosphate production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS596887A CS274941B2 (en) | 1987-08-13 | 1987-08-13 | Method of precipitated calcium carbonate and calcium hydrogen phosphate production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CS8705968A1 CS8705968A1 (en) | 1990-11-14 |
| CS274941B2 true CS274941B2 (en) | 1991-12-17 |
Family
ID=5405676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS596887A CS274941B2 (en) | 1987-08-13 | 1987-08-13 | Method of precipitated calcium carbonate and calcium hydrogen phosphate production |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS274941B2 (en) |
-
1987
- 1987-08-13 CS CS596887A patent/CS274941B2/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| CS8705968A1 (en) | 1990-11-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| IF00 | In force as of 2000-06-30 in czech republic | ||
| MM4A | Patent lapsed due to non-payment of fee |
Effective date: 20040813 |