SK15452000A3 - Spôsob výroby síranu draselného - Google Patents
Spôsob výroby síranu draselného Download PDFInfo
- Publication number
- SK15452000A3 SK15452000A3 SK1545-2000A SK15452000A SK15452000A3 SK 15452000 A3 SK15452000 A3 SK 15452000A3 SK 15452000 A SK15452000 A SK 15452000A SK 15452000 A3 SK15452000 A3 SK 15452000A3
- Authority
- SK
- Slovakia
- Prior art keywords
- filtrate
- precipitate
- chloride
- potassium
- sulfate
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 40
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 title claims abstract description 33
- 229910052939 potassium sulfate Inorganic materials 0.000 title claims abstract description 33
- 235000011151 potassium sulphates Nutrition 0.000 title claims abstract description 30
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims abstract description 94
- 239000001103 potassium chloride Substances 0.000 claims abstract description 47
- 235000011164 potassium chloride Nutrition 0.000 claims abstract description 47
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims abstract description 28
- 235000011130 ammonium sulphate Nutrition 0.000 claims abstract description 28
- 150000003839 salts Chemical class 0.000 claims abstract description 19
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 58
- 239000000706 filtrate Substances 0.000 claims description 51
- 235000002639 sodium chloride Nutrition 0.000 claims description 43
- 239000002244 precipitate Substances 0.000 claims description 39
- 238000002156 mixing Methods 0.000 claims description 38
- 239000011780 sodium chloride Substances 0.000 claims description 25
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 24
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 20
- 239000000243 solution Substances 0.000 claims description 15
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 12
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 11
- VVJRSSJSRXEOQL-UHFFFAOYSA-N calcium;potassium;sulfuric acid;hydrate Chemical compound O.[K].[K].[Ca].OS(O)(=O)=O.OS(O)(=O)=O VVJRSSJSRXEOQL-UHFFFAOYSA-N 0.000 claims description 11
- 229910021529 ammonia Inorganic materials 0.000 claims description 10
- 235000019270 ammonium chloride Nutrition 0.000 claims description 10
- 239000001110 calcium chloride Substances 0.000 claims description 10
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 10
- 235000011148 calcium chloride Nutrition 0.000 claims description 10
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 10
- 235000011152 sodium sulphate Nutrition 0.000 claims description 10
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 9
- 230000001376 precipitating effect Effects 0.000 claims description 8
- 230000003134 recirculating effect Effects 0.000 claims description 7
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 6
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 claims description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 4
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 4
- 239000004571 lime Substances 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 4
- -1 about 23.6% Substances 0.000 claims description 3
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 3
- 239000000920 calcium hydroxide Substances 0.000 claims description 3
- 235000011116 calcium hydroxide Nutrition 0.000 claims description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 3
- 239000012047 saturated solution Substances 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- 239000007787 solid Substances 0.000 abstract description 12
- 239000007788 liquid Substances 0.000 abstract description 7
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 238000001704 evaporation Methods 0.000 abstract description 4
- 230000008020 evaporation Effects 0.000 abstract description 4
- 238000001556 precipitation Methods 0.000 abstract description 3
- 238000000926 separation method Methods 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 8
- 239000011734 sodium Substances 0.000 description 8
- 229910001868 water Inorganic materials 0.000 description 7
- 239000013078 crystal Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000003337 fertilizer Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical class O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000001120 potassium sulphate Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 241000207199 Citrus Species 0.000 description 1
- 241000208125 Nicotiana Species 0.000 description 1
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 229940037003 alum Drugs 0.000 description 1
- 239000001099 ammonium carbonate Substances 0.000 description 1
- 235000012501 ammonium carbonate Nutrition 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 235000020971 citrus fruits Nutrition 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 235000013373 food additive Nutrition 0.000 description 1
- 239000002778 food additive Substances 0.000 description 1
- 238000001640 fractional crystallisation Methods 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 1
- 229940072033 potash Drugs 0.000 description 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 1
- 235000015320 potassium carbonate Nutrition 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/18—Carbonates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/02—Preparation, purification or separation of ammonia
- C01C1/026—Preparation of ammonia from inorganic compounds
- C01C1/028—Preparation of ammonia from inorganic compounds from ammonium sulfate or sulfite
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D5/00—Sulfates or sulfites of sodium, potassium or alkali metals in general
- C01D5/06—Preparation of sulfates by double decomposition
- C01D5/08—Preparation of sulfates by double decomposition with each other or with ammonium sulfate
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/80—Compositional purity
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Fertilizers (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US8963098P | 1998-06-16 | 1998-06-16 | |
| PCT/CA1999/000564 WO1999065823A1 (en) | 1998-06-16 | 1999-06-15 | Method of procucing potassium sulfate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SK15452000A3 true SK15452000A3 (sk) | 2001-04-09 |
Family
ID=22218710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SK1545-2000A SK15452000A3 (sk) | 1998-06-16 | 1999-06-15 | Spôsob výroby síranu draselného |
Country Status (21)
| Country | Link |
|---|---|
| US (1) | US6315976B1 (id) |
| EP (1) | EP1094985A1 (id) |
| JP (1) | JP2002518281A (id) |
| KR (1) | KR20010034850A (id) |
| CN (1) | CN1202008C (id) |
| AU (1) | AU4254599A (id) |
| BG (1) | BG63775B1 (id) |
| BR (1) | BR9910403A (id) |
| EA (1) | EA002758B1 (id) |
| HR (1) | HRP990360A2 (id) |
| HU (1) | HUP0101399A3 (id) |
| ID (1) | ID28245A (id) |
| IL (1) | IL139099A0 (id) |
| MX (1) | MXPA00010125A (id) |
| NO (1) | NO20005121L (id) |
| PL (1) | PL344486A1 (id) |
| SI (1) | SI20525A (id) |
| SK (1) | SK15452000A3 (id) |
| TR (1) | TR200003226T2 (id) |
| WO (1) | WO1999065823A1 (id) |
| YU (1) | YU76200A (id) |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6334990B1 (en) | 1999-10-21 | 2002-01-01 | Airborne Industrial Minerals Inc. | Formulation of potassium sulfate, sodium carbonate and sodium bicarbonate from potash brine |
| RU2209768C2 (ru) * | 2001-05-21 | 2003-08-10 | Открытое акционерное общество ВНИИ галургии | Способ получения сульфата калия |
| US7041268B2 (en) * | 2004-03-30 | 2006-05-09 | Council Of Scientific And Industrial Research | Process for recovery of sulphate of potash |
| CN1803615B (zh) * | 2006-01-04 | 2010-04-14 | 四川安县银河建化集团有限公司 | 一种用含铬芒硝制备硫酸钾的方法 |
| US7842264B2 (en) * | 2007-04-12 | 2010-11-30 | Cefco, Llc | Process and apparatus for carbon capture and elimination of multi-pollutants in flue gas from hydrocarbon fuel sources and recovery of multiple by-products |
| CA2737825A1 (en) * | 2011-04-20 | 2012-10-20 | Carbon Solutions Incorporated | Conversion of acid gas to sulphate or phosphate-based fertilizers |
| US8409542B2 (en) * | 2011-06-14 | 2013-04-02 | Nichromet Extraction Inc. | Method and system for the production of potassium sulfate from potassium chloride |
| BR112014010982B1 (pt) | 2011-11-17 | 2020-10-13 | Gc Technology Limited | sistema interconectado e método para a purificação e recuperação de potassa |
| US9737827B2 (en) * | 2012-08-13 | 2017-08-22 | Enviro Water Minerals Company, Inc. | System for removing high purity salt from a brine |
| US9528361B2 (en) * | 2012-12-13 | 2016-12-27 | Solvay Sa | Process for recovering soda values from underground soda deposits |
| CN104261433B (zh) * | 2014-09-24 | 2016-06-29 | 湘潭市天志科技有限公司 | 一种利用含钾、氯离子的固废物生产硫酸钾的方法 |
| CN106629781B (zh) * | 2015-10-28 | 2017-12-05 | 绥芬河市石英经贸有限公司 | 一种硫酸钾的制备方法 |
| CN106315627A (zh) * | 2016-08-12 | 2017-01-11 | 宜昌富升化工有限公司 | 一种硫酸钾生产工艺 |
| CN106335910B (zh) * | 2016-08-25 | 2017-11-24 | 辽宁津大肥业有限公司 | 一种硫酸钾及氯化铵的制备方法 |
| CA2968257C (en) | 2017-05-24 | 2022-05-24 | Inotel Inc. | Potassium magnesium fertilizer |
| WO2019082207A1 (en) * | 2017-10-25 | 2019-05-02 | Fertis India Pvt. Ltd. | ECOENERGIC SYNTHESIS OF POTASH SULPHATE USING AMMONIA AS CATALYST |
| CN109911919A (zh) * | 2017-12-13 | 2019-06-21 | 北京恩泽佳立科技有限公司 | 硫酸钾制备系统及方法 |
| IT202000018238A1 (it) * | 2020-07-28 | 2022-01-28 | Edale S R L | Processo di produzione di concimi a base di solfato di potassio |
| KR102454672B1 (ko) | 2020-12-28 | 2022-10-14 | 한국세라믹기술원 | 황산나트륨과 염화칼륨을 사용한 황산칼륨 최적화 제조 방법 |
| US12286358B2 (en) * | 2021-04-27 | 2025-04-29 | Upcycle Minerals Inc. | Process for production of potassium sulfate, ammonium sulfate, and calcium carbonate from syngenite |
| EP4299553A1 (en) * | 2022-06-30 | 2024-01-03 | SABIC Global Technologies B.V. | Production of nitrogen, potassium, sulfur nutrient through de-carbonization and utilization of calcium sulfate |
| CN118084017A (zh) * | 2024-02-27 | 2024-05-28 | 中南民族大学 | 一种钾石膏制备钾盐及超细粉体的方法 |
Family Cites Families (39)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1824361A (en) | 1929-04-29 | 1931-09-22 | Morse Harry Wheeler | Manufacture of sulphate of potash |
| US1936070A (en) | 1931-03-11 | 1933-11-21 | American Potash & Chem Corp | Process for the manufacture of potassium sulphate |
| US1922682A (en) | 1931-08-15 | 1933-08-15 | Holz August | Method of converting potassium chloride into potassium sulphate |
| US1990896A (en) | 1932-07-30 | 1935-02-12 | Pacific Coast Borax Co | Method of making potassium sulphate |
| GB411820A (en) | 1932-12-08 | 1934-06-08 | Albert Eric Cashmore | Improvements in or relating to the production of potassium sulphate or mixed crystals of potassium sulphate and ammonium sulphate |
| US2882128A (en) * | 1954-09-16 | 1959-04-14 | Chimiques Pour L Andustrie Et | Preparation of potassium sulphate from calcium sulphate and potassium chloride |
| US3369867A (en) | 1964-05-14 | 1968-02-20 | American Potash & Chem Corp | Method of producing potassium sulfate |
| US3436175A (en) | 1964-06-19 | 1969-04-01 | Duval Corp | Method of producing ammonium sulfate,potassium sulfate and magnesium oxide from langbeinite |
| US3528767A (en) | 1966-03-16 | 1970-09-15 | Donald E Garrett | Production of potassium chloride,potassium sulfate and sodium sulfate from brines and the like containing potassium,chloride and sulfate |
| US3423171A (en) | 1966-06-14 | 1969-01-21 | Kali Forschungs Inst | Method for making alkali metal sulfate |
| US3429657A (en) | 1966-09-02 | 1969-02-25 | Us Interior | Method for recovering and producing potassium salts |
| US3578399A (en) | 1968-10-23 | 1971-05-11 | Int Minerals & Chem Corp | Production of crystalline potassium sulfate |
| DE1902738B2 (de) * | 1969-01-21 | 1977-02-10 | Kali Und Salz Ag, 3500 Kassel | Verfahren zur herstellung von kaliumsulfat und/oder syngenit |
| US3687639A (en) | 1970-05-25 | 1972-08-29 | Int Minerals & Chem Corp | Production of finely divided potassium sulfate crystals |
| US3656891A (en) | 1970-08-05 | 1972-04-18 | Occidental Petroleum Corp | Process for the production of potassium sulfate and borax |
| US3895920A (en) | 1970-09-03 | 1975-07-22 | Donald E Garrett | Method of producing coarse potash |
| US3843772A (en) | 1972-09-14 | 1974-10-22 | Int Minerals & Chem Corp | Production of white potassium sulfate crystals |
| US3967930A (en) | 1974-11-18 | 1976-07-06 | N L Industries, Inc. | Separation of complex potassium salts from brine evaporites |
| US3998935A (en) | 1975-01-30 | 1976-12-21 | Pennzoil Company | Manufacture of potassium sulfate |
| JPS526396A (en) * | 1975-07-04 | 1977-01-18 | Kintou Kk | Production of potassium sulfate |
| US4045543A (en) | 1975-11-12 | 1977-08-30 | Pennzoil Company | Production of potassium sulfate and hydrogen chloride |
| DE2627871C2 (de) | 1976-06-22 | 1978-08-24 | Kali Und Salz Ag, 3500 Kassel | Verfahren zur Gewinnung von grobem K2 SO4 in Kristallisatoren mit innerer Umwälzung und klassierendem Salzabzug |
| DE2643001C3 (de) | 1976-09-24 | 1979-06-07 | Kali Und Salz Ag, 3500 Kassel | Verfahren zur Herstellung von Kaliumsulfat |
| US4215100A (en) | 1978-05-18 | 1980-07-29 | Antonova Nina V | Method of producing potassium sulfate |
| DE2950404C2 (de) | 1978-12-25 | 1984-05-30 | Asahi Kasei Kogyo K.K., Osaka | Verfahren zur Herstellung von Kaliumsulfat |
| US4268492A (en) | 1979-08-06 | 1981-05-19 | Pennzoil Company | Process for production of potassium sulfate and hydrochloric acid |
| US4371512A (en) | 1981-02-03 | 1983-02-01 | Pennzoil Company | Production of alkali metal sulfates |
| FR2523114A1 (fr) | 1982-03-11 | 1983-09-16 | Alsace Mines Potasse | Procede de fabrication de sulfate de potassium a partir de solutions contenant du chlorure de magnesium et de chlorure de potassium |
| JPS58161917A (ja) | 1982-03-19 | 1983-09-26 | Onoda Kagaku Kogyo Kk | 硫酸カリウムの製造方法 |
| CA1197663A (en) | 1983-03-21 | 1985-12-10 | Jean-Marc Lalancette | Potassium sulfate from magnesium sulfate |
| US4562058A (en) | 1983-08-02 | 1985-12-31 | International Minerals & Chemical Corp. | Process for crystallizing potassium sulfate |
| US4554151A (en) | 1983-09-27 | 1985-11-19 | Prodeco, Inc. | Process for producing K3 H(SO4)2 crystals and potassium sulfate crystals |
| US4588573A (en) | 1983-09-27 | 1986-05-13 | Prodeco, Inc. | Method for the production of potassium sulfate using sulfuric acid and potassium chloride |
| US5298050A (en) | 1992-10-09 | 1994-03-29 | Great Salt Lake Minerals Corporation | High water solubility potassium sulfate and method of producing same |
| US5366534A (en) | 1992-11-30 | 1994-11-22 | Sherritt Inc. | Granular potassium sulfate preparation and process for production thereof |
| CN1034067C (zh) * | 1993-02-20 | 1997-02-19 | 湖南省化肥工业公司 | 硫酸铵氯化钾循环复分解生产硫酸钾的方法 |
| US5549876A (en) | 1994-11-28 | 1996-08-27 | Dead Sea Works | Production of potassium sulfate using differential contacting |
| US5552126A (en) | 1994-11-28 | 1996-09-03 | Dead Sea Works Ltd. | Co-production of potassium sulfate, sodium sulfate and sodium chloride |
| US5529764A (en) | 1994-11-28 | 1996-06-25 | Dead Sea Works Ltd. | Co-production of potassium sulfate and sodium sulfate |
-
1999
- 1999-06-14 US US09/332,500 patent/US6315976B1/en not_active Expired - Fee Related
- 1999-06-15 IL IL13909999A patent/IL139099A0/xx unknown
- 1999-06-15 PL PL99344486A patent/PL344486A1/xx unknown
- 1999-06-15 AU AU42545/99A patent/AU4254599A/en not_active Abandoned
- 1999-06-15 TR TR2000/03226T patent/TR200003226T2/xx unknown
- 1999-06-15 YU YU76200A patent/YU76200A/sh unknown
- 1999-06-15 JP JP2000554656A patent/JP2002518281A/ja active Pending
- 1999-06-15 EA EA200001194A patent/EA002758B1/ru not_active IP Right Cessation
- 1999-06-15 HR HR60/089,630A patent/HRP990360A2/hr not_active Application Discontinuation
- 1999-06-15 ID IDW20010127A patent/ID28245A/id unknown
- 1999-06-15 HU HU0101399A patent/HUP0101399A3/hu unknown
- 1999-06-15 EP EP99957051A patent/EP1094985A1/en not_active Withdrawn
- 1999-06-15 SK SK1545-2000A patent/SK15452000A3/sk unknown
- 1999-06-15 BR BR9910403-2A patent/BR9910403A/pt not_active Application Discontinuation
- 1999-06-15 CN CNB998056839A patent/CN1202008C/zh not_active Expired - Fee Related
- 1999-06-15 KR KR1020007012544A patent/KR20010034850A/ko not_active Withdrawn
- 1999-06-15 MX MXPA00010125A patent/MXPA00010125A/es not_active Application Discontinuation
- 1999-06-15 WO PCT/CA1999/000564 patent/WO1999065823A1/en not_active Ceased
- 1999-06-15 SI SI9920037A patent/SI20525A/sl not_active IP Right Cessation
-
2000
- 2000-10-11 NO NO20005121A patent/NO20005121L/no not_active Application Discontinuation
- 2000-10-16 BG BG104860A patent/BG63775B1/bg unknown
Also Published As
| Publication number | Publication date |
|---|---|
| SI20525A (sl) | 2001-10-31 |
| AU4254599A (en) | 2000-01-05 |
| EP1094985A1 (en) | 2001-05-02 |
| YU76200A (sh) | 2003-02-28 |
| EA002758B1 (ru) | 2002-08-29 |
| ID28245A (id) | 2001-05-10 |
| BR9910403A (pt) | 2001-01-09 |
| NO20005121D0 (no) | 2000-10-11 |
| IL139099A0 (en) | 2001-11-25 |
| PL344486A1 (en) | 2001-11-05 |
| CN1202008C (zh) | 2005-05-18 |
| EA200001194A1 (ru) | 2001-06-25 |
| KR20010034850A (ko) | 2001-04-25 |
| HRP990360A2 (en) | 2000-04-30 |
| CN1299337A (zh) | 2001-06-13 |
| TR200003226T2 (tr) | 2001-03-21 |
| US6315976B1 (en) | 2001-11-13 |
| WO1999065823A1 (en) | 1999-12-23 |
| JP2002518281A (ja) | 2002-06-25 |
| MXPA00010125A (es) | 2004-10-14 |
| HUP0101399A2 (hu) | 2001-12-28 |
| BG63775B1 (bg) | 2002-12-29 |
| NO20005121L (no) | 2001-02-15 |
| BG104860A (en) | 2001-07-31 |
| HUP0101399A3 (en) | 2003-04-28 |
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