DE3525654C2 - - Google Patents
Info
- Publication number
- DE3525654C2 DE3525654C2 DE3525654A DE3525654A DE3525654C2 DE 3525654 C2 DE3525654 C2 DE 3525654C2 DE 3525654 A DE3525654 A DE 3525654A DE 3525654 A DE3525654 A DE 3525654A DE 3525654 C2 DE3525654 C2 DE 3525654C2
- Authority
- DE
- Germany
- Prior art keywords
- nitrate
- potassium
- calcium
- reaction
- potassium nitrate
- Prior art date
- 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
Links
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 119
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 claims description 61
- 238000006243 chemical reaction Methods 0.000 claims description 61
- 235000010333 potassium nitrate Nutrition 0.000 claims description 58
- 239000004323 potassium nitrate Substances 0.000 claims description 56
- 238000000034 method Methods 0.000 claims description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 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 23
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 22
- 239000012452 mother liquor Substances 0.000 claims description 19
- ZHZFKLKREFECML-UHFFFAOYSA-L calcium;sulfate;hydrate Chemical compound O.[Ca+2].[O-]S([O-])(=O)=O ZHZFKLKREFECML-UHFFFAOYSA-L 0.000 claims description 17
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 claims description 16
- 229910052939 potassium sulfate Inorganic materials 0.000 claims description 16
- 235000011151 potassium sulphates Nutrition 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 15
- 150000003839 salts Chemical class 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 13
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 11
- 239000011591 potassium Substances 0.000 claims description 11
- 229910052700 potassium Inorganic materials 0.000 claims description 11
- 239000011541 reaction mixture Substances 0.000 claims description 11
- 238000002425 crystallisation Methods 0.000 claims description 9
- 230000008025 crystallization Effects 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 5
- 238000001556 precipitation Methods 0.000 claims description 3
- 229920006395 saturated elastomer Polymers 0.000 claims description 3
- 239000012736 aqueous medium Substances 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 239000007791 liquid phase Substances 0.000 claims 3
- JKCYOAMQADPJBK-UHFFFAOYSA-L S(=O)(=O)([O-])[O-].[Ca+2].[N+](=O)([O-])[O-].[Ca+2] Chemical compound S(=O)(=O)([O-])[O-].[Ca+2].[N+](=O)([O-])[O-].[Ca+2] JKCYOAMQADPJBK-UHFFFAOYSA-L 0.000 claims 1
- 239000000243 solution Substances 0.000 description 54
- 239000000047 product Substances 0.000 description 25
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 22
- FAPWRFPIFSIZLT-UHFFFAOYSA-M sodium chloride Inorganic materials [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 19
- 229910052602 gypsum Inorganic materials 0.000 description 12
- 239000010440 gypsum Substances 0.000 description 12
- 239000001103 potassium chloride Substances 0.000 description 11
- 235000011164 potassium chloride Nutrition 0.000 description 11
- 239000011780 sodium chloride Substances 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000007787 solid Substances 0.000 description 7
- 239000002562 thickening agent Substances 0.000 description 7
- 238000006073 displacement reaction Methods 0.000 description 6
- 238000001704 evaporation Methods 0.000 description 6
- 230000008020 evaporation Effects 0.000 description 6
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 5
- 239000000460 chlorine Substances 0.000 description 5
- 239000002054 inoculum Substances 0.000 description 5
- 229910017604 nitric acid Inorganic materials 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 239000000725 suspension Substances 0.000 description 5
- 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 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 229910002651 NO3 Inorganic materials 0.000 description 4
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 4
- 238000009835 boiling Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 description 3
- 229910052801 chlorine Inorganic materials 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 239000011259 mixed solution Substances 0.000 description 3
- -1 potassium nitrate Chlorine Chemical compound 0.000 description 3
- 230000035484 reaction time Effects 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 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
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 239000001110 calcium chloride Substances 0.000 description 2
- 229910001628 calcium chloride Inorganic materials 0.000 description 2
- SNBXCWVOMQIJEH-UHFFFAOYSA-L calcium;potassium;sulfate;hydrate Chemical compound O.[K+].[Ca+2].[O-]S([O-])(=O)=O SNBXCWVOMQIJEH-UHFFFAOYSA-L 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- RCJVRSBWZCNNQT-UHFFFAOYSA-N dichloridooxygen Chemical compound ClOCl RCJVRSBWZCNNQT-UHFFFAOYSA-N 0.000 description 2
- 150000004683 dihydrates Chemical class 0.000 description 2
- 239000003337 fertilizer Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000011505 plaster Substances 0.000 description 2
- 229940072033 potash Drugs 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 235000015320 potassium carbonate Nutrition 0.000 description 2
- 238000001953 recrystallisation Methods 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 229960005486 vaccine Drugs 0.000 description 2
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 1
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 101100186820 Drosophila melanogaster sicily gene Proteins 0.000 description 1
- 241000792859 Enema Species 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
- 239000004157 Nitrosyl chloride Substances 0.000 description 1
- ARLZGEXVMUDUQZ-UHFFFAOYSA-N O.O.[Ca] Chemical compound O.O.[Ca] ARLZGEXVMUDUQZ-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 238000006887 Ullmann reaction Methods 0.000 description 1
- MBKYQQGSTNPQIA-UHFFFAOYSA-N [N+](=O)([O-])[O-].[Ca+2].[N+](=O)([O-])[O-].[K+] Chemical compound [N+](=O)([O-])[O-].[Ca+2].[N+](=O)([O-])[O-].[K+] MBKYQQGSTNPQIA-UHFFFAOYSA-N 0.000 description 1
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001464 adherent effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 229910052925 anhydrite Inorganic materials 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 239000007900 aqueous suspension Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- OFJNYRXAJMBENX-UHFFFAOYSA-J calcium dipotassium disulfate hydrate Chemical compound O.[K+].[K+].[Ca++].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O OFJNYRXAJMBENX-UHFFFAOYSA-J 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 235000011116 calcium hydroxide Nutrition 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- XOZREOIZDKNXBN-UHFFFAOYSA-L calcium;potassium;sulfate Chemical compound [K+].[Ca+2].[O-]S([O-])(=O)=O XOZREOIZDKNXBN-UHFFFAOYSA-L 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- OSVXSBDYLRYLIG-UHFFFAOYSA-N chlorine dioxide Inorganic materials O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 239000011549 crystallization solution Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007920 enema Substances 0.000 description 1
- 229940095399 enema Drugs 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000004720 fertilization Effects 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- GMLLYEDWRJDBIT-UHFFFAOYSA-J magnesium;dipotassium;disulfate Chemical compound [Mg+2].[K+].[K+].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O GMLLYEDWRJDBIT-UHFFFAOYSA-J 0.000 description 1
- BMQVDVJKPMGHDO-UHFFFAOYSA-K magnesium;potassium;chloride;sulfate;trihydrate Chemical compound O.O.O.[Mg+2].[Cl-].[K+].[O-]S([O-])(=O)=O BMQVDVJKPMGHDO-UHFFFAOYSA-K 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- VPCDQGACGWYTMC-UHFFFAOYSA-N nitrosyl chloride Chemical compound ClN=O VPCDQGACGWYTMC-UHFFFAOYSA-N 0.000 description 1
- 235000019392 nitrosyl chloride Nutrition 0.000 description 1
- HVZWVEKIQMJYIK-UHFFFAOYSA-N nitryl chloride Chemical compound [O-][N+](Cl)=O HVZWVEKIQMJYIK-UHFFFAOYSA-N 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 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
- 238000004886 process control Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 235000010344 sodium nitrate Nutrition 0.000 description 1
- 239000004317 sodium nitrate Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000002699 waste material Substances 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
- C01F11/46—Sulfates
-
- 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
- C01D9/08—Preparation by double decomposition
- C01D9/12—Preparation by double decomposition with nitrates or magnesium, calcium, strontium, or barium
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Inorganic Chemistry (AREA)
- Geology (AREA)
- Agronomy & Crop Science (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19853525654 DE3525654A1 (de) | 1985-07-18 | 1985-07-18 | Verfahren zur herstellung von kaliumnitrat |
| DD86292546A DD259184A5 (de) | 1985-07-18 | 1986-07-16 | Verfahren zur herstellung von kaliumnitrat |
| IT48274/86A IT1195981B (it) | 1985-07-18 | 1986-07-17 | Procedimento per la produzione di nitrato di potassio |
| SU864027850A SU1766245A3 (ru) | 1985-07-18 | 1986-07-17 | Способ получени нитрата кали |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19853525654 DE3525654A1 (de) | 1985-07-18 | 1985-07-18 | Verfahren zur herstellung von kaliumnitrat |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3525654A1 DE3525654A1 (de) | 1987-01-22 |
| DE3525654C2 true DE3525654C2 (xx) | 1987-04-30 |
Family
ID=6276091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19853525654 Granted DE3525654A1 (de) | 1985-07-18 | 1985-07-18 | Verfahren zur herstellung von kaliumnitrat |
Country Status (4)
| Country | Link |
|---|---|
| DD (1) | DD259184A5 (xx) |
| DE (1) | DE3525654A1 (xx) |
| IT (1) | IT1195981B (xx) |
| SU (1) | SU1766245A3 (xx) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104787782A (zh) * | 2015-04-16 | 2015-07-22 | 岳阳市钾盐科学研究所 | 制取工业硝酸钾与硫酸钙工艺 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2766767A1 (en) | 2009-06-25 | 2010-12-29 | Imi Tami Institute For Research And Development Ltd. | Process for production of commercial quality potassium nitrate from polyhalite |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1217027A (en) * | 1983-09-27 | 1987-01-27 | Ralph E. Worthington | Process for producing and decomposing syngenite for producing k.sub.3h(so.sub.4).sub.2 crystals and potassium sulfate crystals, and for producing potassium nitrate |
-
1985
- 1985-07-18 DE DE19853525654 patent/DE3525654A1/de active Granted
-
1986
- 1986-07-16 DD DD86292546A patent/DD259184A5/de not_active IP Right Cessation
- 1986-07-17 IT IT48274/86A patent/IT1195981B/it active
- 1986-07-17 SU SU864027850A patent/SU1766245A3/ru active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104787782A (zh) * | 2015-04-16 | 2015-07-22 | 岳阳市钾盐科学研究所 | 制取工业硝酸钾与硫酸钙工艺 |
| CN104787782B (zh) * | 2015-04-16 | 2016-09-28 | 岳阳市钾盐科学研究所 | 制取工业硝酸钾与硫酸钙工艺 |
Also Published As
| Publication number | Publication date |
|---|---|
| DD259184A5 (de) | 1988-08-17 |
| IT1195981B (it) | 1988-11-03 |
| DE3525654A1 (de) | 1987-01-22 |
| SU1766245A3 (ru) | 1992-09-30 |
| IT8648274A0 (it) | 1986-07-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| D2 | Grant after examination | ||
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