CA1217027A - Obtention et decomposition de la syngenite pour la production de cristaux de k.sub.3h(so.sub.4).sub.2 et de sulfate de potassium, et la preparation de nitrate de potassium - Google Patents

Obtention et decomposition de la syngenite pour la production de cristaux de k.sub.3h(so.sub.4).sub.2 et de sulfate de potassium, et la preparation de nitrate de potassium

Info

Publication number: CA1217027A
Authority: CA; Canada
Prior art keywords: potassium; syngenite; solution; sulphate; grams
Prior art date: 1983-09-27
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Expired

Application number

CA000463023A

Other languages

English (en)

Inventor

Ralph E. Worthington

Alex Magdics

Donald B. Stain

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Prodeco Inc

Original Assignee

Prodeco Inc

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1983-09-27

Filing date

1984-09-12

Publication date

1987-01-27

1983-09-27 Priority claimed from US06/536,378 external-priority patent/US4554151A/en

1984-09-12 Application filed by Prodeco Inc filed Critical Prodeco Inc

1987-01-27 Application granted granted Critical

1987-01-27 Publication of CA1217027A publication Critical patent/CA1217027A/fr

Status Expired legal-status Critical Current

Links

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 title claims abstract description 79
229910052939 potassium sulfate Inorganic materials 0.000 title claims abstract description 71
OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 title claims abstract description 57
238000000034 method Methods 0.000 title claims abstract description 33
230000008569 process Effects 0.000 title claims abstract description 29
239000013078 crystal Substances 0.000 title claims abstract description 22
FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 title abstract description 55
235000010333 potassium nitrate Nutrition 0.000 title abstract description 26
235000011151 potassium sulphates Nutrition 0.000 title description 43
239000004323 potassium nitrate Substances 0.000 title description 21
OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical class [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims abstract description 82
239000007787 solid Substances 0.000 claims abstract description 26
QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims abstract description 25
229910001868 water Inorganic materials 0.000 claims description 43
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 34
150000003839 salts Chemical class 0.000 claims description 29
QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 23
239000012452 mother liquor Substances 0.000 claims description 17
238000006243 chemical reaction Methods 0.000 claims description 14
-1 bisulfate ions Chemical class 0.000 claims description 12
238000001816 cooling Methods 0.000 claims description 11
CHKVPAROMQMJNQ-UHFFFAOYSA-M potassium bisulfate Chemical compound [K+].OS([O-])(=O)=O CHKVPAROMQMJNQ-UHFFFAOYSA-M 0.000 claims description 8
229910000343 potassium bisulfate Inorganic materials 0.000 claims description 2
238000004064 recycling Methods 0.000 claims 2
238000010936 aqueous wash Methods 0.000 claims 1
WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical class [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 abstract description 78
229910021653 sulphate ion Inorganic materials 0.000 abstract description 23
229910052925 anhydrite Inorganic materials 0.000 abstract description 13
238000002425 crystallisation Methods 0.000 abstract description 8
230000008025 crystallization Effects 0.000 abstract description 8
239000002244 precipitate Substances 0.000 abstract description 3
238000011084 recovery Methods 0.000 abstract description 3
239000000243 solution Substances 0.000 description 90
239000001120 potassium sulphate Substances 0.000 description 42
FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 40
239000001103 potassium chloride Substances 0.000 description 39
235000011164 potassium chloride Nutrition 0.000 description 39
239000001175 calcium sulphate Substances 0.000 description 36
235000011132 calcium sulphate Nutrition 0.000 description 36
238000000354 decomposition reaction Methods 0.000 description 26
ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 25
239000011591 potassium Substances 0.000 description 22
229910052700 potassium Inorganic materials 0.000 description 22
239000011780 sodium chloride Substances 0.000 description 22
PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 21
235000011149 sulphuric acid Nutrition 0.000 description 19
GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 18
ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 description 18
229910017604 nitric acid Inorganic materials 0.000 description 18
239000001117 sulphuric acid Substances 0.000 description 17
239000002002 slurry Substances 0.000 description 16
239000000203 mixture Substances 0.000 description 14
239000000047 product Substances 0.000 description 14
238000001914 filtration Methods 0.000 description 13
VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 12
VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 12
238000005406 washing Methods 0.000 description 12
229910052938 sodium sulfate Inorganic materials 0.000 description 11
235000011152 sodium sulphate Nutrition 0.000 description 11
239000002253 acid Substances 0.000 description 10
238000007792 addition Methods 0.000 description 9
229910000019 calcium carbonate Inorganic materials 0.000 description 7
238000001035 drying Methods 0.000 description 7
238000002360 preparation method Methods 0.000 description 7
238000000926 separation method Methods 0.000 description 7
230000015572 biosynthetic process Effects 0.000 description 6
238000009835 boiling Methods 0.000 description 6
239000011575 calcium Substances 0.000 description 6
238000003786 synthesis reaction Methods 0.000 description 6
OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 5
239000006227 byproduct Substances 0.000 description 5
239000000706 filtrate Substances 0.000 description 5
229910052602 gypsum Inorganic materials 0.000 description 5
239000010440 gypsum Substances 0.000 description 5
QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
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 4
229910052921 ammonium sulfate Inorganic materials 0.000 description 4
239000000920 calcium hydroxide Substances 0.000 description 4
229910001861 calcium hydroxide Inorganic materials 0.000 description 4
238000001704 evaporation Methods 0.000 description 4
230000008020 evaporation Effects 0.000 description 4
IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 4
229910000041 hydrogen chloride Inorganic materials 0.000 description 4
238000004519 manufacturing process Methods 0.000 description 4
BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 3
229910002651 NO3 Inorganic materials 0.000 description 3
BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 3
239000001166 ammonium sulphate Substances 0.000 description 3
235000011130 ammonium sulphate Nutrition 0.000 description 3
229910052791 calcium Inorganic materials 0.000 description 3
AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 3
229910001424 calcium ion Inorganic materials 0.000 description 3
239000000460 chlorine Substances 0.000 description 3
238000010586 diagram Methods 0.000 description 3
239000003337 fertilizer Substances 0.000 description 3
239000001257 hydrogen Substances 0.000 description 3
229910052739 hydrogen Inorganic materials 0.000 description 3
229910052500 inorganic mineral Inorganic materials 0.000 description 3
235000010755 mineral Nutrition 0.000 description 3
239000011707 mineral Substances 0.000 description 3
229910001414 potassium ion Inorganic materials 0.000 description 3
239000000725 suspension Substances 0.000 description 3
ZHJGWYRLJUCMRT-UHFFFAOYSA-N 5-[6-[(4-methylpiperazin-1-yl)methyl]benzimidazol-1-yl]-3-[1-[2-(trifluoromethyl)phenyl]ethoxy]thiophene-2-carboxamide Chemical compound C=1C=CC=C(C(F)(F)F)C=1C(C)OC(=C(S1)C(N)=O)C=C1N(C1=C2)C=NC1=CC=C2CN1CCN(C)CC1 ZHJGWYRLJUCMRT-UHFFFAOYSA-N 0.000 description 2
VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 2
IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
241000196324 Embryophyta Species 0.000 description 2
CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
230000008901 benefit Effects 0.000 description 2
QAOWNCQODCNURD-UHFFFAOYSA-M bisulphate group Chemical group S([O-])(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-M 0.000 description 2
239000003153 chemical reaction reagent Substances 0.000 description 2
229910052801 chlorine Inorganic materials 0.000 description 2
230000001419 dependent effect Effects 0.000 description 2
238000010494 dissociation reaction Methods 0.000 description 2
230000005593 dissociations Effects 0.000 description 2
GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 2
238000012423 maintenance Methods 0.000 description 2
239000000463 material Substances 0.000 description 2
159000000001 potassium salts Chemical class 0.000 description 2
238000001556 precipitation Methods 0.000 description 2
239000000376 reactant Substances 0.000 description 2
239000002689 soil Substances 0.000 description 2
239000007790 solid phase Substances 0.000 description 2
150000003467 sulfuric acid derivatives Chemical class 0.000 description 2
QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
VVNCNSJFMMFHPL-VKHMYHEASA-N D-penicillamine Chemical compound CC(C)(S)[C@@H](N)C(O)=O VVNCNSJFMMFHPL-VKHMYHEASA-N 0.000 description 1
235000007688 Lycopersicon esculentum Nutrition 0.000 description 1
239000007832 Na2SO4 Substances 0.000 description 1
244000061176 Nicotiana tabacum Species 0.000 description 1
235000002637 Nicotiana tabacum Nutrition 0.000 description 1
NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
240000003768 Solanum lycopersicum Species 0.000 description 1
235000002595 Solanum tuberosum Nutrition 0.000 description 1
244000061456 Solanum tuberosum Species 0.000 description 1
230000009418 agronomic effect Effects 0.000 description 1
229910052936 alkali metal sulfate Inorganic materials 0.000 description 1
229910021529 ammonia Inorganic materials 0.000 description 1
239000007864 aqueous solution Substances 0.000 description 1
239000002131 composite material Substances 0.000 description 1
239000012141 concentrate Substances 0.000 description 1
239000000470 constituent Substances 0.000 description 1
238000010276 construction Methods 0.000 description 1
230000007423 decrease Effects 0.000 description 1
229940075911 depen Drugs 0.000 description 1
238000013461 design Methods 0.000 description 1
ZLCCLBKPLLUIJC-UHFFFAOYSA-L disodium tetrasulfane-1,4-diide Chemical compound [Na+].[Na+].[S-]SS[S-] ZLCCLBKPLLUIJC-UHFFFAOYSA-L 0.000 description 1
238000004090 dissolution Methods 0.000 description 1
230000008030 elimination Effects 0.000 description 1
238000003379 elimination reaction Methods 0.000 description 1
238000002474 experimental method Methods 0.000 description 1
230000002349 favourable effect Effects 0.000 description 1
150000002431 hydrogen Chemical class 0.000 description 1
XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
238000011065 in-situ storage Methods 0.000 description 1
230000002262 irrigation Effects 0.000 description 1
238000003973 irrigation Methods 0.000 description 1
238000002386 leaching Methods 0.000 description 1
235000012204 lemonade/lime carbonate Nutrition 0.000 description 1
239000004571 lime Substances 0.000 description 1
229910052943 magnesium sulfate Inorganic materials 0.000 description 1
235000019341 magnesium sulphate Nutrition 0.000 description 1
230000007246 mechanism Effects 0.000 description 1
238000012986 modification Methods 0.000 description 1
230000004048 modification Effects 0.000 description 1
229910052757 nitrogen Inorganic materials 0.000 description 1
XULSCZPZVQIMFM-IPZQJPLYSA-N odevixibat Chemical compound C12=CC(SC)=C(OCC(=O)N[C@@H](C(=O)N[C@@H](CC)C(O)=O)C=3C=CC(O)=CC=3)C=C2S(=O)(=O)NC(CCCC)(CCCC)CN1C1=CC=CC=C1 XULSCZPZVQIMFM-IPZQJPLYSA-N 0.000 description 1
239000012071 phase Substances 0.000 description 1
238000010587 phase diagram Methods 0.000 description 1
235000013606 potato chips Nutrition 0.000 description 1
235000012015 potatoes Nutrition 0.000 description 1
239000012716 precipitator Substances 0.000 description 1
238000011027 product recovery Methods 0.000 description 1
239000002994 raw material Substances 0.000 description 1
239000012066 reaction slurry Substances 0.000 description 1
230000035484 reaction time Effects 0.000 description 1
238000001953 recrystallisation Methods 0.000 description 1
229920006395 saturated elastomer Polymers 0.000 description 1
239000012047 saturated solution Substances 0.000 description 1
238000005204 segregation Methods 0.000 description 1
238000000638 solvent extraction Methods 0.000 description 1
239000007858 starting material Substances 0.000 description 1
238000003756 stirring Methods 0.000 description 1
231100000331 toxic Toxicity 0.000 description 1
230000002588 toxic effect Effects 0.000 description 1
230000035899 viability Effects 0.000 description 1
239000002699 waste material Substances 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
- 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
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D1/00—Fertilisers containing potassium
- C05D1/02—Manufacture from potassium chloride or sulfate or double or mixed salts thereof

Landscapes

Chemical & Material Sciences (AREA)
Organic Chemistry (AREA)
Inorganic Chemistry (AREA)
Engineering & Computer Science (AREA)
Materials Engineering (AREA)
Chemical Kinetics & Catalysis (AREA)
Life Sciences & Earth Sciences (AREA)
Agronomy & Crop Science (AREA)
Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Preparation Of Compounds By Using Micro-Organisms (AREA)
Fertilizers (AREA)

CA000463023A 1983-09-27 1984-09-12 Obtention et decomposition de la syngenite pour la production de cristaux de k.sub.3h(so.sub.4).sub.2 et de sulfate de potassium, et la preparation de nitrate de potassium Expired CA1217027A (fr)

Applications Claiming Priority (6)

Application Number	Priority Date	Filing Date	Title
US53637983A	1983-09-27	1983-09-27
US536,378		1983-09-27
US536,379		1983-09-27
US06/536,378 US4554151A (en)	1983-09-27	1983-09-27	Process for producing K3 H(SO4)2 crystals and potassium sulfate crystals
US54473383A	1983-10-24	1983-10-24
US544,733		1983-10-24

Publications (1)

Publication Number	Publication Date
CA1217027A true CA1217027A (fr)	1987-01-27

Family

ID=27415209

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA000463023A Expired CA1217027A (fr)	1983-09-27	1984-09-12	Obtention et decomposition de la syngenite pour la production de cristaux de k.sub.3h(so.sub.4).sub.2 et de sulfate de potassium, et la preparation de nitrate de potassium

Country Status (4)

Country	Link
CA (1)	CA1217027A (fr)
DE (1)	DE3434590A1 (fr)
ES (2)	ES8602539A1 (fr)
FR (1)	FR2553081A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US8388916B2 (en)	2009-06-25	2013-03-05	Imi Tami Institute For Research And Development	Process for production of commercial quality potassium nitrate from polyhalite

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE3525654A1 (de) *	1985-07-18	1987-01-22	Kali & Salz Ag	Verfahren zur herstellung von kaliumnitrat

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2136996A (en) *	1931-04-20	1938-11-15	Firm Of Th Goldschmidt A G	Decomposition of complex sulphate salts containing alkali sulphates and alkaline earth sulphates
DE592496C (de) *	1931-04-21	1934-02-09	Chem Fab Buckau	Verfahren zur Zersetzung von aus Alkalisulfaten und Calciumsulfat bestehenden Mehrfachsalzen
US2033159A (en) *	1933-08-30	1936-03-10	Usa	Method of recovering potassium sulphate from syngenite
FR1162699A (fr) *	1955-11-07	1958-09-16	Hamoetza Hamadait	Procédé de fabrication du sulfate de potassium
DE1902738B2 (de) *	1969-01-21	1977-02-10	Kali Und Salz Ag, 3500 Kassel	Verfahren zur herstellung von kaliumsulfat und/oder syngenit
NL7007079A (fr) *	1969-05-22	1970-11-24
US4215100A (en) *	1978-05-18	1980-07-29	Antonova Nina V	Method of producing potassium sulfate
GB2068918B (en) *	1980-01-09	1984-06-20	Lozano J A F	Potassium sulphate and potassium sodium sulphate production

1984
- 1984-09-12 CA CA000463023A patent/CA1217027A/fr not_active Expired
- 1984-09-20 DE DE19843434590 patent/DE3434590A1/de not_active Withdrawn
- 1984-09-26 FR FR8414785A patent/FR2553081A1/fr not_active Withdrawn
- 1984-09-26 ES ES536254A patent/ES8602539A1/es not_active Expired
1985
- 1985-08-01 ES ES545823A patent/ES8603792A1/es not_active Expired

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US8388916B2 (en)	2009-06-25	2013-03-05	Imi Tami Institute For Research And Development	Process for production of commercial quality potassium nitrate from polyhalite
EP2445850A4 (fr) *	2009-06-25	2015-04-08	Imi Tami Institute Research	Procédé de production de nitrate de potassium de qualité commerciale à partir de polyhalite

Also Published As

Publication number	Publication date
ES536254A0 (es)	1985-12-01
ES545823A0 (es)	1986-01-01
ES8602539A1 (es)	1985-12-01
DE3434590A1 (de)	1985-04-11
FR2553081A1 (fr)	1985-04-12
ES8603792A1 (es)	1986-01-01

Legal Events

Date	Code	Title	Description
2004-09-12	MKEX	Expiry

Publication	Publication Date	Title
US4554151A (en)	1985-11-19	Process for producing K3 H(SO4)2 crystals and potassium sulfate crystals
US3528767A (en)	1970-09-15	Production of potassium chloride,potassium sulfate and sodium sulfate from brines and the like containing potassium,chloride and sulfate
CA1129174A (fr)	1982-08-10	Methode d'extraction des produits chimiques en presence dans les eaux salines
US4533536A (en)	1985-08-06	Process for the manufacture of potassium sulphate by treating solutions containing magnesium chloride and potassium chloride
CA1217028A (fr)	1987-01-27	Preparation de sulfate de potassium a partir d'acide sulfurique et de chlorure de potassium
US3998935A (en)	1976-12-21	Manufacture of potassium sulfate
EP0796222B1 (fr)	2000-01-26	Production simultanee de sulfate de potassium et de sulfate de sodium
US4836995A (en)	1989-06-06	Process for the manufacture of monopotassium phosphate
HUP0101399A2 (hu)	2001-12-28	Eljárás kálium-szulfát előállítására
US4436710A (en)	1984-03-13	Method of manufacturing potassium sulfate
US6143271A (en)	2000-11-07	Process for producing potassium sulfate from potash and sodium sulfate
US8388916B2 (en)	2013-03-05	Process for production of commercial quality potassium nitrate from polyhalite
US3436175A (en)	1969-04-01	Method of producing ammonium sulfate,potassium sulfate and magnesium oxide from langbeinite
US6692716B1 (en)	2004-02-17	Method of formulating alkali earth salts
EP1945567B1 (fr)	2010-07-21	Meilleur procédé pour la récupération de sulfate de potasse (sop) à partir d'une eau-mère riche en sulfate
AU751236B2 (en)	2002-08-08	Method of formulating alkali metal salts
US4554139A (en)	1985-11-19	Process for producing and decomposing syngenite
US4504458A (en)	1985-03-12	Gypsum conversion
US3803884A (en)	1974-04-16	Production of fertilizers
US4062929A (en)	1977-12-13	Production of hydrogen fluoride
US4334885A (en)	1982-06-15	Production of potassium chloride from langbeinite
GB2068918A (en)	1981-08-19	Potassium sulphate and potassium sodium sulphate production
IL46740A (en)	1977-07-31	Purification of phosphoric acid
US3726660A (en)	1973-04-10	Nitrophosphate fertilizer production
US1965457A (en)	1934-07-03	Process of producing chlorates and perchlorates