ZA200204720B - Production of two alkali metal salts by a combined ion exchange and crystallisation process. - Google Patents
Production of two alkali metal salts by a combined ion exchange and crystallisation process. Download PDFInfo
- Publication number
- ZA200204720B ZA200204720B ZA200204720A ZA200204720A ZA200204720B ZA 200204720 B ZA200204720 B ZA 200204720B ZA 200204720 A ZA200204720 A ZA 200204720A ZA 200204720 A ZA200204720 A ZA 200204720A ZA 200204720 B ZA200204720 B ZA 200204720B
- Authority
- ZA
- South Africa
- Prior art keywords
- alkali metal
- phosphate
- ion exchange
- nitrate
- crystallisation
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 58
- 238000005342 ion exchange Methods 0.000 title claims description 57
- 238000002425 crystallisation Methods 0.000 title claims description 39
- 229910052783 alkali metal Inorganic materials 0.000 title claims description 12
- -1 alkali metal salts Chemical class 0.000 title claims description 6
- 238000004519 manufacturing process Methods 0.000 title description 14
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 54
- LWIHDJKSTIGBAC-UHFFFAOYSA-K potassium phosphate Substances [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 claims description 38
- 239000002994 raw material Substances 0.000 claims description 29
- 235000010333 potassium nitrate Nutrition 0.000 claims description 27
- 239000004323 potassium nitrate Substances 0.000 claims description 27
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 21
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 21
- 235000021317 phosphate Nutrition 0.000 claims description 20
- 239000012452 mother liquor Substances 0.000 claims description 19
- 239000010452 phosphate Substances 0.000 claims description 19
- 229910019142 PO4 Inorganic materials 0.000 claims description 18
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 18
- 239000011575 calcium Substances 0.000 claims description 18
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 17
- 229910052791 calcium Inorganic materials 0.000 claims description 17
- 239000011347 resin Substances 0.000 claims description 17
- 229920005989 resin Polymers 0.000 claims description 17
- 239000001506 calcium phosphate Substances 0.000 claims description 12
- 229910002651 NO3 Inorganic materials 0.000 claims description 11
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 11
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 11
- 229910000402 monopotassium phosphate Inorganic materials 0.000 claims description 11
- 235000019796 monopotassium phosphate Nutrition 0.000 claims description 11
- 229910017604 nitric acid Inorganic materials 0.000 claims description 11
- GNSKLFRGEWLPPA-UHFFFAOYSA-M potassium dihydrogen phosphate Chemical compound [K+].OP(O)([O-])=O GNSKLFRGEWLPPA-UHFFFAOYSA-M 0.000 claims description 11
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 10
- 229910001963 alkali metal nitrate Inorganic materials 0.000 claims description 10
- 125000002091 cationic group Chemical group 0.000 claims description 10
- 229910052700 potassium Inorganic materials 0.000 claims description 10
- 239000011591 potassium Substances 0.000 claims description 10
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 9
- 239000002367 phosphate rock Substances 0.000 claims description 9
- 229910001413 alkali metal ion Inorganic materials 0.000 claims description 8
- 229910000318 alkali metal phosphate Inorganic materials 0.000 claims description 8
- 150000001340 alkali metals Chemical class 0.000 claims description 8
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 claims description 8
- 238000000926 separation method Methods 0.000 claims description 8
- 150000001768 cations Chemical class 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 6
- 235000011010 calcium phosphates Nutrition 0.000 claims description 5
- YYRMJZQKEFZXMX-UHFFFAOYSA-L calcium bis(dihydrogenphosphate) Chemical compound [Ca+2].OP(O)([O-])=O.OP(O)([O-])=O YYRMJZQKEFZXMX-UHFFFAOYSA-L 0.000 claims description 4
- GVALZJMUIHGIMD-UHFFFAOYSA-H magnesium phosphate Chemical class [Mg+2].[Mg+2].[Mg+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O GVALZJMUIHGIMD-UHFFFAOYSA-H 0.000 claims description 4
- 239000004137 magnesium phosphate Substances 0.000 claims description 4
- 235000010994 magnesium phosphates Nutrition 0.000 claims description 4
- 229910000150 monocalcium phosphate Inorganic materials 0.000 claims description 4
- 235000019691 monocalcium phosphate Nutrition 0.000 claims description 4
- 235000019739 Dicalciumphosphate Nutrition 0.000 claims description 3
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 claims description 3
- NEFBYIFKOOEVPA-UHFFFAOYSA-K dicalcium phosphate Chemical compound [Ca+2].[Ca+2].[O-]P([O-])([O-])=O NEFBYIFKOOEVPA-UHFFFAOYSA-K 0.000 claims description 3
- 229910000390 dicalcium phosphate Inorganic materials 0.000 claims description 3
- 229940038472 dicalcium phosphate Drugs 0.000 claims description 3
- 239000003456 ion exchange resin Substances 0.000 claims description 3
- 229920003303 ion-exchange polymer Polymers 0.000 claims description 3
- 229910001425 magnesium ion Inorganic materials 0.000 claims description 3
- 239000011343 solid material Substances 0.000 claims description 2
- 230000003247 decreasing effect Effects 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 239000000243 solution Substances 0.000 description 23
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 20
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 20
- 239000000203 mixture Substances 0.000 description 17
- 239000000047 product Substances 0.000 description 16
- 235000011009 potassium phosphates Nutrition 0.000 description 13
- 229910000160 potassium phosphate Inorganic materials 0.000 description 12
- 239000001103 potassium chloride Substances 0.000 description 10
- 235000011164 potassium chloride Nutrition 0.000 description 10
- 239000013078 crystal Substances 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 239000002699 waste material Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000003960 organic solvent Substances 0.000 description 4
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 3
- 230000029087 digestion Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000012527 feed solution Substances 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000010440 gypsum Substances 0.000 description 3
- 229910052602 gypsum Inorganic materials 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 230000008929 regeneration Effects 0.000 description 3
- 238000011069 regeneration method Methods 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 2
- 229910001634 calcium fluoride Inorganic materials 0.000 description 2
- 229910001424 calcium ion Inorganic materials 0.000 description 2
- 229910000389 calcium phosphate Inorganic materials 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 239000004035 construction material Substances 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 150000002222 fluorine compounds Chemical class 0.000 description 2
- 238000003898 horticulture Methods 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910001463 metal phosphate Inorganic materials 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-O oxonium Chemical compound [OH3+] XLYOFNOQVPJJNP-UHFFFAOYSA-O 0.000 description 2
- CHKVPAROMQMJNQ-UHFFFAOYSA-M potassium bisulfate Chemical compound [K+].OS([O-])(=O)=O CHKVPAROMQMJNQ-UHFFFAOYSA-M 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- 239000001117 sulphuric acid Substances 0.000 description 2
- 235000011149 sulphuric acid Nutrition 0.000 description 2
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(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 2
- 238000010977 unit operation Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- QZPSXPBJTPJTSZ-UHFFFAOYSA-N aqua regia Chemical compound Cl.O[N+]([O-])=O QZPSXPBJTPJTSZ-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 229940043430 calcium compound Drugs 0.000 description 1
- 150000001674 calcium compounds Chemical class 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 239000011549 crystallization solution Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 235000011167 hydrochloric acid Nutrition 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910000398 iron phosphate Inorganic materials 0.000 description 1
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 229910000157 magnesium phosphate Inorganic materials 0.000 description 1
- 229960002261 magnesium phosphate Drugs 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 235000011007 phosphoric acid Nutrition 0.000 description 1
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 229910001414 potassium ion Inorganic materials 0.000 description 1
- 159000000001 potassium salts Chemical class 0.000 description 1
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 description 1
- 229910052939 potassium sulfate Inorganic materials 0.000 description 1
- 239000001120 potassium sulphate Substances 0.000 description 1
- 235000011151 potassium sulphates Nutrition 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 235000010344 sodium nitrate Nutrition 0.000 description 1
- 239000004317 sodium nitrate Substances 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D9/00—Nitrates of sodium, potassium or alkali metals in general
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/26—Phosphates
- C01B25/30—Alkali metal phosphates
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Treatment Of Water By Ion Exchange (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Removal Of Specific Substances (AREA)
- Peptides Or Proteins (AREA)
- Non-Alcoholic Beverages (AREA)
- Fertilizers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI992606A FI107330B (fi) | 1999-12-03 | 1999-12-03 | Kahden alkalimetallisuolan valmistaminen yhdistetyllä ioninvaihto- ja kiteytysmenetelmällä |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ZA200204720B true ZA200204720B (en) | 2004-02-24 |
Family
ID=8555695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ZA200204720A ZA200204720B (en) | 1999-12-03 | 2002-06-12 | Production of two alkali metal salts by a combined ion exchange and crystallisation process. |
Country Status (21)
| Country | Link |
|---|---|
| US (1) | US6911188B2 (es) |
| EP (1) | EP1235743B1 (es) |
| AR (1) | AR026668A1 (es) |
| AT (1) | ATE250557T1 (es) |
| AU (1) | AU775840B2 (es) |
| CA (1) | CA2393324A1 (es) |
| DE (1) | DE60005555T2 (es) |
| DK (1) | DK1235743T3 (es) |
| EE (1) | EE200200285A (es) |
| EG (1) | EG22534A (es) |
| ES (1) | ES2207565T3 (es) |
| FI (1) | FI107330B (es) |
| HU (1) | HUP0203592A3 (es) |
| JO (1) | JO2174B1 (es) |
| MY (1) | MY120642A (es) |
| NZ (1) | NZ519150A (es) |
| PL (1) | PL355676A1 (es) |
| RU (1) | RU2238906C2 (es) |
| TR (1) | TR200201423T2 (es) |
| WO (1) | WO2001040112A1 (es) |
| ZA (1) | ZA200204720B (es) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102532214B (zh) * | 2010-12-28 | 2014-12-10 | 三达膜科技（厦门）有限公司 | 一种巴龙霉素的脱色提纯方法 |
| CZ304507B6 (cs) | 2013-03-28 | 2014-06-04 | Membrain S.R.O. | Způsob výroby dusičnanu draselného metodou elektrodialýzy a zařízení k provádění tohoto způsobu |
| RU2616061C1 (ru) * | 2016-04-04 | 2017-04-12 | Акционерное общество "Минерально-химическая компания "ЕвроХим" | Установка для комбинированного получения фосфатных солей и сульфата калия |
| CN111170796B (zh) * | 2020-02-22 | 2022-09-16 | 太尔化工（南京）有限公司 | 粉状氨基树脂再生制备农用缓释氮肥工艺 |
| CN113845123A (zh) * | 2021-11-01 | 2021-12-28 | 石药集团中诺药业（石家庄）有限公司 | 一种从唑林中间体废水中回收氟硼酸钾的方法 |
| EP4253314A1 (en) | 2022-03-28 | 2023-10-04 | Saudi Arabian Mining Company (Ma'aden) | Integrated process to upgrade low grade calcareous phosphate ore with low co2 emissions and low phosphogypsum waste |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1496160A (fr) * | 1966-07-05 | 1967-09-29 | Azote Office Nat Ind | Procédé de fabrication d'acide phosphorique par extraction au moyen de solvants organiques à partir du produit de l'attaque nitrique des phosphates naturels |
| US3993466A (en) | 1967-06-23 | 1976-11-23 | Aktieselskabet Dansk Svovlsyre-Og Superphosphat-Fabrik | Fertilizer production |
| DE1812403A1 (de) | 1968-12-03 | 1970-06-18 | Dynamit Nobel Ag | Verfahren zur Herstellung von Kaliumnitrat im Ionenaustauschverfahren |
| NL7007079A (es) * | 1969-05-22 | 1970-11-24 | ||
| US3645673A (en) * | 1969-12-01 | 1972-02-29 | Dynamit Nobel Ag | Process for the production of potassium nitrate by the ion exchange method |
| US3840640A (en) * | 1972-08-28 | 1974-10-08 | Pennzoil Co | Production of fluoride-free nitrates |
| US4008307A (en) | 1975-06-02 | 1977-02-15 | Southwire Company | Production of monobasic potassium phosphate by ion exchange |
| US4704263A (en) * | 1985-06-24 | 1987-11-03 | Advanced Separation Technologies Incorporated | Production of potassium phosphates by ion exchange |
| IL75767A (en) | 1985-07-10 | 1988-09-30 | Negev Phosphates Ltd | Process for the manufacture of pure monopotassium phosphate |
| IL79020A0 (en) | 1986-06-04 | 1986-09-30 | Haifa Chemicals Ltd | Process for the manufacture of monopotassium phosphate |
| US4885148A (en) | 1988-09-06 | 1989-12-05 | Phosphate Engineering & Construction Co., Inc. | Production of monobasic potassium phosphate with low chloride content from potassium chloride and phosphoric acid produced from the commercial wet process |
| US5114460A (en) | 1988-10-31 | 1992-05-19 | Alpine Plant Foods Limited | Production of low-chloride alkali metal phosphates |
| US5110578A (en) * | 1989-10-05 | 1992-05-05 | Monomeros Colombo Venezolanos, S.A. (E.M.A.) | Continuous production of potassium nitrate via ion exchange |
| US5098461A (en) * | 1989-12-28 | 1992-03-24 | Tennessee Valley Authority | Phosphatic and nitrogen fertilizers via HNO3 processing |
| FI112646B (fi) | 1996-06-13 | 2003-12-31 | Kemira Growhow Oy | Menetelmä erittäin puhtaiden kaliumsuolojen tuottamiseksi |
-
1999
- 1999-12-03 FI FI992606A patent/FI107330B/fi active
-
2000
- 2000-11-29 EG EG20001493A patent/EG22534A/xx active
- 2000-11-30 AR ARP000106322A patent/AR026668A1/es unknown
- 2000-12-01 EP EP00985294A patent/EP1235743B1/en not_active Expired - Lifetime
- 2000-12-01 RU RU2002118314/15A patent/RU2238906C2/ru not_active IP Right Cessation
- 2000-12-01 PL PL00355676A patent/PL355676A1/xx not_active IP Right Cessation
- 2000-12-01 EE EEP200200285A patent/EE200200285A/xx unknown
- 2000-12-01 MY MYPI20005636A patent/MY120642A/en unknown
- 2000-12-01 WO PCT/FI2000/001056 patent/WO2001040112A1/en active Search and Examination
- 2000-12-01 DK DK00985294T patent/DK1235743T3/da active
- 2000-12-01 ES ES00985294T patent/ES2207565T3/es not_active Expired - Lifetime
- 2000-12-01 DE DE60005555T patent/DE60005555T2/de not_active Expired - Fee Related
- 2000-12-01 US US10/148,569 patent/US6911188B2/en not_active Expired - Fee Related
- 2000-12-01 NZ NZ519150A patent/NZ519150A/en unknown
- 2000-12-01 AU AU21756/01A patent/AU775840B2/en not_active Ceased
- 2000-12-01 CA CA002393324A patent/CA2393324A1/en not_active Abandoned
- 2000-12-01 HU HU0203592A patent/HUP0203592A3/hu unknown
- 2000-12-01 TR TR2002/01423T patent/TR200201423T2/xx unknown
- 2000-12-01 AT AT00985294T patent/ATE250557T1/de not_active IP Right Cessation
- 2000-12-03 JO JO2000192A patent/JO2174B1/en active
-
2002
- 2002-06-12 ZA ZA200204720A patent/ZA200204720B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| RU2002118314A (ru) | 2004-01-27 |
| US6911188B2 (en) | 2005-06-28 |
| EP1235743B1 (en) | 2003-09-24 |
| AU2175601A (en) | 2001-06-12 |
| TR200201423T2 (tr) | 2002-12-23 |
| AR026668A1 (es) | 2003-02-19 |
| JO2174B1 (en) | 2003-04-23 |
| AU775840B2 (en) | 2004-08-19 |
| FI107330B (fi) | 2001-07-13 |
| NZ519150A (en) | 2003-08-29 |
| HUP0203592A3 (en) | 2003-04-28 |
| PL355676A1 (en) | 2004-05-04 |
| CA2393324A1 (en) | 2001-06-07 |
| EG22534A (en) | 2003-03-31 |
| DE60005555T2 (de) | 2004-07-01 |
| WO2001040112A1 (en) | 2001-06-07 |
| US20030133862A1 (en) | 2003-07-17 |
| HUP0203592A2 (hu) | 2003-03-28 |
| RU2238906C2 (ru) | 2004-10-27 |
| DE60005555D1 (de) | 2003-10-30 |
| EE200200285A (et) | 2003-08-15 |
| ES2207565T3 (es) | 2004-06-01 |
| EP1235743A1 (en) | 2002-09-04 |
| DK1235743T3 (da) | 2004-01-26 |
| ATE250557T1 (de) | 2003-10-15 |
| MY120642A (en) | 2005-11-30 |
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