PL16936B1 - A method for producing mixed calcium fertilizer, without ballast. - Google Patents
A method for producing mixed calcium fertilizer, without ballast.Info
- Publication number
- PL16936B1 PL16936B1 PL16936A PL1693629A PL16936B1 PL 16936 B1 PL16936 B1 PL 16936B1 PL 16936 A PL16936 A PL 16936A PL 1693629 A PL1693629 A PL 1693629A PL 16936 B1 PL16936 B1 PL 16936B1
- Authority
- PL
- Poland
- Prior art keywords
- nitrate
- precipitate
- ballast
- solution
- mixed calcium
- Prior art date
Links
- 239000003337 fertilizer Substances 0.000 title claims description 6
- 239000011575 calcium Substances 0.000 title claims description 5
- OYPRJOBELJOOCE-UHFFFAOYSA-N calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 title claims description 4
- 229910052791 calcium Inorganic materials 0.000 title claims description 4
- 238000004519 manufacturing process Methods 0.000 title 1
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N Calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 claims description 14
- NBIIXXVUZAFLBC-UHFFFAOYSA-N phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 12
- 239000002244 precipitate Substances 0.000 claims description 10
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 6
- DVARTQFDIMZBAA-UHFFFAOYSA-O Ammonium nitrate Chemical compound [NH4+].[O-][N+]([O-])=O DVARTQFDIMZBAA-UHFFFAOYSA-O 0.000 claims description 4
- FGIUAXJPYTZDNR-UHFFFAOYSA-N Potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 4
- GRYLNZFGIOXLOG-UHFFFAOYSA-N nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 4
- VSIIXMUUUJUKCM-UHFFFAOYSA-D pentacalcium;fluoride;triphosphate Chemical compound [F-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O VSIIXMUUUJUKCM-UHFFFAOYSA-D 0.000 claims description 3
- 239000002367 phosphate rock Substances 0.000 claims description 3
- 235000010333 potassium nitrate Nutrition 0.000 claims description 2
- 239000004323 potassium nitrate Substances 0.000 claims description 2
- 230000029087 digestion Effects 0.000 claims 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims 1
- OTYBMLCTZGSZBG-UHFFFAOYSA-L Potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 229910052939 potassium sulfate Inorganic materials 0.000 description 4
- 235000011151 potassium sulphates Nutrition 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 3
- 239000011591 potassium Substances 0.000 description 3
- 229910052700 potassium Inorganic materials 0.000 description 3
- 239000001120 potassium sulphate Substances 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000011780 sodium chloride Substances 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium monoxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 210000004080 Milk Anatomy 0.000 description 1
- 235000015450 Tilia cordata Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K [O-]P([O-])([O-])=O Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 230000002378 acidificating Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000004720 fertilization Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009331 sowing Methods 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 230000001131 transforming Effects 0.000 description 1
Description
Do nawozenia kwasnych gleb korzystnie jest stosowac mieszany nawóz, zawieraja¬ cy prócz azotu, fosforu i potasu równiez wapn.Stwierdzono, iz mozna wytwoinzyc tego rodzaju nawóiz mieszany w sposób stosun¬ kowo prosty, jesli z roztworu, otrzymanego przez rozklad fosforytu kwasem azotowym, wytraci sie kwas fosforowy jako precypitat, z otrzymanego w roztworze azotanu wapnia wytworzy sie przez czesciowa przemiane siarczanem potasowym roztwór, zawieraja¬ cy .azotan potasu i azotan wapnia:, i do po¬ zostalosci, otrzymanej przez odparowanie roztworu, dodaje wydzielony poprzednio precypitat calkowicie liub czesciowo, najle¬ piej w stanie suchym. Otrzymana mieszani¬ ne soli mozna nastepnie przerobic na mate- rjal staly i bezposrednio zdatny do wysie¬ wu, pracujac z chlodzonem mieszadlem sli¬ makowemu Precypitat moze byc mieszany bezposrednio z goracym stopem soli (przy okolo 120°C)1 przyczem okazalo sie nad¬ spodziewanie, ze rozpuszczalnosc kwasu fo¬ sforowego w kwasie cytrynowym nietylko nie zmniejsza sie, lecz, przeciwnie, wzrasta.Wedlug niniejszego sposobu mozna, ewentualnie z dbdatkiem azotanu amonu, wytworzyc mieszane nawozy, w których N, P205 znajduja sie w stosunkach dowol¬ nych, zadanych przez praktyke.Celem osiagniecia stosunku K20 = 1 : 0,75 : 1,75 postepuje sie nastepujaco: 1 tonne fosforytu roztwarza sie 2,5 ton- nami kwasu azotowego, zawierajacemi o- kolo 1 t, HNO^; utworzony kwas fosforowy, ewentualnie po usunieciu nierozpuszczo- N : P205mych zanieczyszczen, straca 15% mlekiem ^wapiennym jako precypitat, który sie od- "'* * dziela, Dó pozostalego roztworu azotanu wapnia o temp, 95° — 100°C wprowadza sie isiarczan [potasu w postaci roztworu o temp, 95° — 100°C. Dla przemiany 1 m3 roztworu azotanu wapnia, zawierajacego 500 kg Ca (NOJ potrzeba 325 kg 94% siar¬ czanu potasu. Po odsaczeniu gipsu odparo¬ wuje siie przesacz razem z 20 kg azotanu amonu w prózni. Do stopu goracego, w tem¬ peraturze 120°C, dodaje sie nastepnie 195 kg poprzedzilo wytraconego precypitatu, poczem mieszanina zestala sie przy równo¬ czesnym chlodzeniu. Tak otrzymana sól jest zupelnie jednorodna i bezposrednio zdatna do wysiewu. Mieszanina zawiera o- kolo 12% azotu, 20% kwasu fosforowego (PiOJ, 21,0% potasu (K20) i 17,0% wapna (CaO).Znane jest roztwarzanie fosforytu kwa¬ sem azotowym i wytracanie kwasu fosfo¬ rowego jako precypitatu, jak równiez cal¬ kowita przemiana roztworów azotanu wap¬ nia siarczanem potasu. W przeciwstawie¬ niu do tego niniejisizy sposób polega na po¬ laczeniu wytracenia precypitatu z czescio¬ wa przemiana azotanu wiapnia z siarczanem potasu oraz nastepczem dodaniem precypi¬ tatu do zageszczonego lugu, przez co otrzy¬ muje sie wartosciowy, pozbawiony balastu nawóz o nadzwyczaj korzystnem dzialaniu. PLFor the fertilization of acidic soils, it is preferable to use a mixed fertilizer containing, apart from nitrogen, phosphorus and potassium, also calcium. It has been found that it is possible to produce this type of fertilizer in a relatively simple manner, if it loses the solution obtained by decomposing phosphate with nitric acid. phosphoric acid is obtained as a precipitate, from the calcium nitrate obtained in the solution, a solution containing potassium nitrate and calcium nitrate is prepared by partially transforming it with potassium sulphate, and to the residue obtained by evaporating the solution, the previously separated precipitate is added completely or partially preferably dry. The resulting mixed salt can then be made into a solid and directly seedable material by working with a cooled silica agitator. The precipitate can be mixed directly with a hot salt melt (at about 120 ° C) and has proved to be overwhelming. expecting that the solubility of phosphoric acid in citric acid not only does not decrease but, on the contrary, increases. According to the present method, it is possible, optionally with the addition of ammonium nitrate, to produce mixed fertilizers in which N, P205 are in any ratio, set by the practitioner. The aim of achieving the ratio K20 = 1: 0.75: 1.75 is as follows: 1 ton of phosphate rock is dissolved with 2.5 tons of nitric acid, containing about 1 t, HNO ^; the formed phosphoric acid, possibly after removing the undissolved impurities, is lost with 15% milk in lime as a precipitate, which separates. Sulphate is added to the remaining solution of calcium nitrate at 95 ° - 100 ° C [potassium in the form of a solution at 95 ° - 100 ° C. For the conversion of 1 m3 of calcium nitrate solution containing 500 kg of Ca (325 kg of 94% potassium sulphate is needed. kg of ammonium nitrate in vacuum. To the melt, which is hot at 120 ° C, 195 kg are then added, preceded by the precipitated precipitate, and the mixture is then solidified with simultaneous cooling. The salt thus obtained is completely homogeneous and directly suitable for sowing. It contains about 12% nitrogen, 20% phosphoric acid (PiOJ, 21.0% potassium (K20) and 17.0% calcium (CaO). It is known to digest phosphate rock with nitric acid and to precipitate phosphoric acid as a precipitate, as well as the complete conversion of the solutions of a calcium nitrate with potassium sulfate. In contrast to this, the method consists in combining the precipitation of the precipitate with the partial conversion of calcium nitrate with potassium sulphate, and then adding the precipitate to the concentrated slurry, thereby obtaining a valuable, ballast-free fertilizer with an extremely beneficial effect. . PL
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL16936B1 true PL16936B1 (en) | 1932-10-31 |
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