NO170403B - PROCEDURE FOR MANUFACTURING FERTILIZERS CONTAINING AMMONIUM NITRATE AND CALCIUM CARBONATE - Google Patents
PROCEDURE FOR MANUFACTURING FERTILIZERS CONTAINING AMMONIUM NITRATE AND CALCIUM CARBONATE Download PDFInfo
- Publication number
- NO170403B NO170403B NO870985A NO870985A NO170403B NO 170403 B NO170403 B NO 170403B NO 870985 A NO870985 A NO 870985A NO 870985 A NO870985 A NO 870985A NO 170403 B NO170403 B NO 170403B
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- Prior art keywords
- ammonium nitrate
- calcium carbonate
- weight
- nitrate
- calcium
- Prior art date
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- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 title claims abstract description 63
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 229910000019 calcium carbonate Inorganic materials 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims description 6
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 239000003337 fertilizer Substances 0.000 title description 10
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 claims abstract description 13
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 7
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 6
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 6
- 239000007864 aqueous solution Substances 0.000 claims abstract description 5
- 239000000155 melt Substances 0.000 claims abstract description 5
- JCRBPEBDDUPYOF-UHFFFAOYSA-M azanium;calcium;carbonate;nitrate Chemical compound [NH4+].[Ca+2].[O-]C([O-])=O.[O-][N+]([O-])=O JCRBPEBDDUPYOF-UHFFFAOYSA-M 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 2
- 238000006386 neutralization reaction Methods 0.000 claims description 2
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 abstract description 4
- 239000001099 ammonium carbonate Substances 0.000 abstract description 4
- 235000012501 ammonium carbonate Nutrition 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 238000005406 washing Methods 0.000 description 6
- 239000008187 granular material Substances 0.000 description 5
- 239000000243 solution 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
- 238000001035 drying Methods 0.000 description 4
- 238000005187 foaming Methods 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000005469 granulation Methods 0.000 description 3
- 230000003179 granulation Effects 0.000 description 3
- 229940088417 precipitated calcium carbonate Drugs 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-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
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 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
- 239000000126 substance Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 239000005569 Iron sulphate Substances 0.000 description 1
- 241001611138 Isma Species 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000000184 acid digestion Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 239000001166 ammonium sulphate Substances 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000001175 calcium sulphate Substances 0.000 description 1
- 235000011132 calcium sulphate Nutrition 0.000 description 1
- BUACSMWVFUNQET-UHFFFAOYSA-H dialuminum;trisulfate;hydrate Chemical compound O.[Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O BUACSMWVFUNQET-UHFFFAOYSA-H 0.000 description 1
- 238000010981 drying operation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 229910052920 inorganic sulfate Inorganic materials 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives 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
- 108090000623 proteins and genes Proteins 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C1/00—Ammonium nitrate fertilisers
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Fertilizers (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
Description
Foreliggende oppfinnelse vedrører en fremgangsmåte ved fremstilling av ammoniumnitrat- og kalsiumkarbonatholdige kornete gjødninger ved innføring av kalsiumkarbonat som er oppnådd ved omsetning av kalsiumnitrat med ammoniakk og karbondioksyd i vandig løsning, i en smelte av ammoniumnitrat og overføring av den erholdte mask i kornet form. The present invention relates to a method for the production of ammonium nitrate- and calcium carbonate-containing granular fertilizers by introducing calcium carbonate which is obtained by reacting calcium nitrate with ammonia and carbon dioxide in aqueous solution, in a melt of ammonium nitrate and transferring the obtained mash in granular form.
Det er kjent å fremstille ammoniumnitrat- og kalsiumkarbonat-holdige gjødninger ved blanding av ammoniumnitratsmelter med finmalt og tørket kalsiumkarbonat (DE-C-691 686, Process Technologies for Nitrogen Fertilizers, U.S. Department of commerce, 1978, side 51-53). Avhengig av den tilsatte kalsium-karbonatmengde får man gjødninger med varierende N-innhold. It is known to produce ammonium nitrate and calcium carbonate-containing fertilizers by mixing ammonium nitrate melt with finely ground and dried calcium carbonate (DE-C-691 686, Process Technologies for Nitrogen Fertilizers, U.S. Department of commerce, 1978, pages 51-53). Depending on the added amount of calcium carbonate, you get fertilizers with varying N content.
Som kalsiumkarbonat kan det enten anvendes naturlig, malt og tørket kalksten eller også utfelt kalsiumkarbonat. Dette utfelte kalsiumkarbonat utvinnes fra kalsiumnitrattetrahydrat (Ca(N03)2»4H20), slik det dannes i betydelige mengder ved salpetersyreoppslutning av råfosfater ifølge Odda-prosessen. Dette kalsium-nitrattetrahydratet omvandles med ammoniakk og karbondioksyd, henholdsvis ammoniumkarbonat ifølge ligningen: As calcium carbonate, either natural, ground and dried limestone or precipitated calcium carbonate can be used. This precipitated calcium carbonate is extracted from calcium nitrate tetrahydrate (Ca(N03)2»4H20), as it is formed in significant quantities by nitric acid digestion of crude phosphates according to the Odda process. This calcium nitrate tetrahydrate is converted with ammonia and carbon dioxide, respectively ammonium carbonate according to the equation:
til kalsiumkarbonat og ammoniumnitrat. Etter omsetningen adskilles den ca. 65%ige NH4N03-løsning fra utfelt kalsiumkarbonat. Ammoniumnitratløsningen inndampes, mens kalsiumkarbonatet vaskes og tørkes. Det således behandlede kalsiumkarbonat tilsettes så den oppkonsentrerte ammoniumnitratløsningen, og den erholdte masken overføres ved granulering eller prilling i den kornede gjødning (sammenlign Ullmanns Encyklopådie der Technischen Chemie, 4. to calcium carbonate and ammonium nitrate. After turnover, it is separated approx. 65% NH4N03 solution from precipitated calcium carbonate. The ammonium nitrate solution is evaporated, while the calcium carbonate is washed and dried. The calcium carbonate thus treated is then added to the concentrated ammonium nitrate solution, and the resulting mask is transferred by granulation or prilling into the granular fertilizer (compare Ullmann's Encyklopådie der Technischen Chemie, 4.
opplag, bind 7, side 518-519). Det utvaskede og tørkede kalsiumkarbonat har et fuktighetsinnhold på mindre enn 0.05 vekt% og et ammoniumnitratinnhold på ca. 0,15vekt% (IFATechnical Conference, Paris, 1984, Preprints s. 18-11 til 18-13, ISMA Technical Conference, 1976, Haag, Preprints s. 224-226). Utvasking og tørking er omstendelige trinn, da utvaskingen må utføres i flere trinn og tørkingen av det filterfuktige gods, som inneholder ca. 13 vekt% fuktighet, krever meget energi. Vannet man får ved utvaskingen inneholder ammoniumnitrat, og det må edition, volume 7, pages 518-519). The washed and dried calcium carbonate has a moisture content of less than 0.05% by weight and an ammonium nitrate content of approx. 0.15% by weight (IFATechnical Conference, Paris, 1984, Preprints pp. 18-11 to 18-13, ISMA Technical Conference, 1976, The Hague, Preprints pp. 224-226). Washing out and drying are time-consuming steps, as the washing out must be carried out in several steps and the drying of the filter-damp material, which contains approx. 13% moisture by weight, requires a lot of energy. The water you get from washing out contains ammonium nitrate, and it has to
av miljøgrunner likeledes opparbeides med energitilførsel. På den annen side bør de ulemper som opptrer gjennom disse brysomme trinn i tørkingen ved innføringen av fuktig kalsiumkarbonat unngås. Ulempene består i at den reverse reaksjon med et innførte vann ifølge reaksjonsligningen ovenfor under dannelse av kalsiumnitrattetrahydrat og utvikling av NH3 og C02 begunstiges, hvorved forstyrrelser gjennom sterk skumming av smeiten kan forårsakes, mens på den annen side påvirkes slitasjebestandigheten til gjødningsgranulatet uheldig ved det dannede kalsiumnitrattetrahydrat. Utvaskingen av den fuktige kalk er nødvendig for å fjerne ammoniumnitrat som henger på, for å unngå spaltninger av ammoniumnitratet ved den etterfølgende tørking. for environmental reasons is also processed with energy supply. On the other hand, the disadvantages that occur through these troublesome steps in drying when introducing moist calcium carbonate should be avoided. The disadvantages consist in the fact that the reverse reaction with an introduced water according to the reaction equation above during the formation of calcium nitrate tetrahydrate and the evolution of NH3 and C02 is favored, whereby disturbances through strong foaming of the melt can be caused, while on the other hand the wear resistance of the fertilizer granules is adversely affected by the formed calcium nitrate tetrahydrate . The washing out of the moist lime is necessary to remove ammonium nitrate that hangs on, to avoid splitting of the ammonium nitrate during the subsequent drying.
Oppgaven for foreliggende oppfinnelse var å frembringe en fremgangsmåte for fremstilling av ammoniumnitrat- og kalsiumkarbonatholdige kornede gjødninger, hvor kalsiumkarbonatet, som erholdtes ved omsetning av kalsiumnitrat med ammoniakk og karbondioksyd eller ammoniumkarbonat i vandig løsning, innføres i smelter av ammoniumnitrat og den erholdte mask overføres i den kornede form, ved hvilken visse ulemper ikke opptrer, og ved hvilken man i det minste delvis kan sløyfe de hittil nødvendige vaske- og tørkeoperasjoner og samtidig får et produkt som er tilstrekkelig med hensyn til krevet slitasjebestandighet. The task of the present invention was to produce a method for the production of ammonium nitrate- and calcium carbonate-containing granular fertilizers, where the calcium carbonate, which was obtained by reacting calcium nitrate with ammonia and carbon dioxide or ammonium carbonate in aqueous solution, is introduced into melts of ammonium nitrate and the obtained mash is transferred into the granular form, in which certain disadvantages do not occur, and in which the previously necessary washing and drying operations can at least be partially omitted and at the same time a product is obtained which is sufficient with regard to the required wear resistance.
Det ble funnet at denne oppgave kunne løses ved at det anvendes et kalsiumkarbonat som inneholder ammoniumnitrat og vann, med det forbehold at summen av ammoniumnitrat- og vanninnholdet ikke overstiger 25 vekt%, at vanninnholdet er 4-11 vekt% og ammoniumnitratinnholdet er minst 1 vekt%, og at ammoniumnitratsmelten tilsettes det fuktige kalsiumkarbonat ved 140-150°C uten forutgående nøytralisering eller avkjøling til 100 °C. It was found that this task could be solved by using a calcium carbonate containing ammonium nitrate and water, with the proviso that the sum of the ammonium nitrate and water content does not exceed 25% by weight, that the water content is 4-11% by weight and the ammonium nitrate content is at least 1% by weight %, and that the ammonium nitrate melt is added to the moist calcium carbonate at 140-150°C without prior neutralization or cooling to 100°C.
Et kalsiumkarbonat som tilsvarer de nevnte krav kan erholdes enten direkte ved omvandling av kalsiumnitrat i vandige løsninger med ammoniakk og karbondioksyd eller ammoniumkarbonat og frafiltrering, eller man trenger bare forholdsvis små mengder vaskevann eller ammoniumnitratløsninger for å innstille vann- og ammoniumnitratinnholdet ifølge oppfinnelsen. A calcium carbonate that corresponds to the aforementioned requirements can be obtained either directly by converting calcium nitrate into aqueous solutions with ammonia and carbon dioxide or ammonium carbonate and filtering off, or you only need relatively small amounts of washing water or ammonium nitrate solutions to adjust the water and ammonium nitrate content according to the invention.
Overraskende opptrer det ved innføring av et slikt kalsiumkarbonat i ammoniumnitratløsninger ingen skumming som forhindrer begynnelsen av maskingen, og det ammoniumnitrat- og kalsiumkarbonatholdige gjødningsmiddel som fåes ved prilling eller granulering tilsvarer det mekanisk og kjemisk stilte krav, dvs. det er slitasjebestanding og inneholder bare små mengder tilbakedannet kalsiumnitrat. Fortrinnsvis anvender man et kalsiumkarbonat som har et ammoniumnitratinnhold på 8 til 18 vekt% og et vanninnhold på 6 til 10 vekt%. Surprisingly, when such calcium carbonate is introduced into ammonium nitrate solutions, no foaming occurs which prevents the beginning of the machine gene, and the ammonium nitrate and calcium carbonate-containing fertilizer obtained by prilling or granulation corresponds to the mechanical and chemical requirements, i.e. it is abrasion resistant and contains only small amounts recovered calcium nitrate. Preferably, a calcium carbonate is used which has an ammonium nitrate content of 8 to 18% by weight and a water content of 6 to 10% by weight.
For fremstilling av gjødningsmidlet går man på vanlig måte ut fra ammoniumnitratsmelter som har et NH4N03-innhold på 95-99 vekt%. I denne smeiten innføres det vann- og ammoniumnitratholdige kalsiumkarbonat, og den oppnådde mask, hvis temperatur hensiktsmessig er 140 til 150°C, overføres så på i og for seg kjent måte, for eksempel ved prilling eller granulering i den kornede form. Det er fordelaktig for å unngå en eventuelt fortsatt forekommende liten skumming i tillegg til å tilsette uorganiske sulfater, så som ammoniumsulfat, aluminiumsulfat, kalsiumsulfat, jernsulfat, kaliumsulfat og natriumsulfat, i mengder opptil 1 vekt% i forhold til maskens totale mengde. Denne tilsetningen kan foregå før, under eller etter innarbeiding av kalsiumkarbonatet. Avhengig av produktets ønskede sammensetning innføres i ammoniumnitratsmelten 3 til 40 vekt% kalsiumkarbonat (i forhold til tørrsubstansen). De nevnte prosentangivelser i de følgende eksempler er, med mindre annet er angitt, vekt%. For the production of the fertiliser, the usual starting point is ammonium nitrate smelter, which has an NH4N03 content of 95-99% by weight. Calcium carbonate containing water and ammonium nitrate is introduced into this smelting, and the obtained mash, whose temperature is suitably 140 to 150°C, is then transferred in a manner known per se, for example by prilling or granulation in the granular form. It is advantageous to avoid a possible still occurring slight foaming in addition to adding inorganic sulphates, such as ammonium sulphate, aluminum sulphate, calcium sulphate, iron sulphate, potassium sulphate and sodium sulphate, in amounts up to 1% by weight in relation to the total amount of the mask. This addition can take place before, during or after incorporation of the calcium carbonate. Depending on the product's desired composition, 3 to 40% by weight of calcium carbonate (relative to the dry substance) is introduced into the ammonium nitrate melt. The mentioned percentages in the following examples are, unless otherwise stated, % by weight.
Eksempel 1 Example 1
Pr. time bearbeides 70 tonn av ren 98%ig ammoniumnitratsmelte som inneholder 90 kg magnesiumsulfat og 22 tonn kalsiumkarbonat som inneholder 8,2% ammoniumnitrat og 7,4% H20 uten forstyrrende skumming til en mask med en temperatur på 140°C. Denne masken granuleres i en trommel og kjøles deretter i etterkoblede aggregater, siktes og forsynes med et antiklumpemiddel. Det ferdige produkt inneholder 27,50% N og 0,2% H20. Elektronmikroskopiske opptak av granulatbruddflater viser at kalsiumkarbonat er fast innstøpt i ammoniumnitratet til granulene med sterk hefting. Per hour, 70 tons of pure 98% ammonium nitrate melt containing 90 kg of magnesium sulfate and 22 tons of calcium carbonate containing 8.2% ammonium nitrate and 7.4% H20 are processed without disturbing foaming into a mask with a temperature of 140°C. This mask is granulated in a drum and then cooled in downstream aggregates, sieved and supplied with an anti-caking agent. The finished product contains 27.50% N and 0.2% H20. Electron microscopic recordings of granule fracture surfaces show that calcium carbonate is firmly embedded in the ammonium nitrate of the granules with strong adhesion.
Eksempel 2 Example 2
Pr. time behandles 40,1 tonn av en 98%ig ammoniumnitratsmelte som inneholder 85 kg aluminiumsulfat og 11,6 tonn med vannutvasket, filterfuktig kalsiumkarbonat, som inneholder 1,6% ammoniumnitrat og 9,6% H20, til en mask med en temperatur på 144°C. Masken granuleres som beskrevet i Eksempel 1 og granulatet kjøles, siktes og utstyres med et antiklumpemiddel. Det ferdige produkt inneholder 27,55% N og 0,23% H20. Per hour, 40.1 tons of a 98% ammonium nitrate melt containing 85 kg aluminum sulfate and 11.6 tons of water-washed, filter-wet calcium carbonate, containing 1.6% ammonium nitrate and 9.6% H20, are processed into a mask with a temperature at 144°C. The mask is granulated as described in Example 1 and the granulate is cooled, sieved and equipped with an anti-caking agent. The finished product contains 27.55% N and 0.23% H20.
Eksempel 3 Example 3
Pr. time behandles 20,2 tonn av en 97,6%ig ammoniumnitratsmelte og 1,1 tonn kalsiumkarbonat som inneholder 17,6% ammoniumnitrat og 7,1% H20, til en mask med en termperatur på 145°C. Denne masken granuleres på en dreie-tallerken og granulene tørkes deretter, kjøles, siktes og utstyres med et antiklumpemiddel. Det slitasjebestandige ferdige produkt inneholder 33,5% N og 0,25% H20. Per hour, 20.2 tonnes of a 97.6% ammonium nitrate melt and 1.1 tonnes of calcium carbonate containing 17.6% ammonium nitrate and 7.1% H20 are processed into a mask with a temperature of 145°C. This mask is granulated on a turntable and the granules are then dried, cooled, sieved and provided with an anti-caking agent. The wear-resistant finished product contains 33.5% N and 0.25% H20.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19863607994 DE3607994A1 (en) | 1986-03-11 | 1986-03-11 | METHOD FOR PRODUCING AMMONIUM NITRATE AND CALCIUM CARBONATE CONTAINER |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| NO870985D0 NO870985D0 (en) | 1987-03-10 |
| NO870985L NO870985L (en) | 1987-09-14 |
| NO170403B true NO170403B (en) | 1992-07-06 |
| NO170403C NO170403C (en) | 1999-11-15 |
Family
ID=6296018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO870985A NO170403C (en) | 1986-03-11 | 1987-03-10 | Process for the preparation of fermentation containing ammonium nitrate and calcium carbonate |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0236972B1 (en) |
| AT (1) | ATE61788T1 (en) |
| DE (2) | DE3607994A1 (en) |
| DK (1) | DK165875C (en) |
| DZ (1) | DZ1056A1 (en) |
| MA (1) | MA20891A1 (en) |
| NO (1) | NO170403C (en) |
| ZA (1) | ZA871709B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2804954B1 (en) * | 2000-02-15 | 2002-09-06 | Cfpi Nufarm | ADDITIVE AND PROCESS FOR THE PREPARATION OF CAN-LIKE FERTILIZERS AND CAN OBTAINED THUS |
| BR122020005031B1 (en) * | 2013-12-13 | 2022-08-02 | Eurochem Agro Gmbh | PROCESS FOR PREPARATION OF 2-(N-3,4-DIMETHYLPYRAZOLE) SUCCINIC ACID AND AQUEOUS ALKALINE SOLUTION OF 2-(N-3,4-DIMETHYLPYRAZOLE) SUCCINIC ACID |
| US9715724B2 (en) | 2014-07-29 | 2017-07-25 | Applied Materials Israel Ltd. | Registration of CAD data with SEM images |
| EP3109223B1 (en) | 2015-06-22 | 2018-08-08 | EuroChem Agro GmbH | Compound for the treatment of urea-comprising fertilizers |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3241443C2 (en) * | 1981-11-12 | 1985-08-29 | Basf Ag, 6700 Ludwigshafen | Process for the production of ammonium nitrate granules containing calcium carbonate |
-
1986
- 1986-03-11 DE DE19863607994 patent/DE3607994A1/en not_active Withdrawn
-
1987
- 1987-03-07 DE DE8787103195T patent/DE3768677D1/en not_active Expired - Lifetime
- 1987-03-07 AT AT87103195T patent/ATE61788T1/en not_active IP Right Cessation
- 1987-03-07 EP EP87103195A patent/EP0236972B1/en not_active Expired - Lifetime
- 1987-03-09 DZ DZ870032A patent/DZ1056A1/en active
- 1987-03-09 MA MA21127A patent/MA20891A1/en unknown
- 1987-03-10 ZA ZA871709A patent/ZA871709B/en unknown
- 1987-03-10 NO NO870985A patent/NO170403C/en unknown
- 1987-03-10 DK DK121987A patent/DK165875C/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| MA20891A1 (en) | 1987-10-01 |
| NO870985L (en) | 1987-09-14 |
| DK165875B (en) | 1993-02-01 |
| EP0236972A3 (en) | 1988-08-31 |
| DE3607994A1 (en) | 1987-09-17 |
| DK121987A (en) | 1987-09-12 |
| NO170403C (en) | 1999-11-15 |
| DK121987D0 (en) | 1987-03-10 |
| NO870985D0 (en) | 1987-03-10 |
| ZA871709B (en) | 1988-11-30 |
| ATE61788T1 (en) | 1991-04-15 |
| DZ1056A1 (en) | 2004-09-13 |
| DE3768677D1 (en) | 1991-04-25 |
| EP0236972B1 (en) | 1991-03-20 |
| DK165875C (en) | 1993-06-21 |
| EP0236972A2 (en) | 1987-09-16 |
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