BE372524A - - Google Patents
Info
- Publication number
- BE372524A BE372524A BE372524DA BE372524A BE 372524 A BE372524 A BE 372524A BE 372524D A BE372524D A BE 372524DA BE 372524 A BE372524 A BE 372524A
- Authority
- BE
- Belgium
- Prior art keywords
- ammonium nitrate
- sulfuric acid
- nitrogen
- slag
- treatment
- Prior art date
Links
- DVARTQFDIMZBAA-UHFFFAOYSA-O Ammonium nitrate Chemical compound [NH4+].[O-][N+]([O-])=O DVARTQFDIMZBAA-UHFFFAOYSA-O 0.000 claims description 22
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 22
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 16
- 239000000047 product Substances 0.000 claims description 9
- 239000003337 fertilizer Substances 0.000 claims description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims description 8
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 6
- 239000006227 byproduct Substances 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 6
- 239000002893 slag Substances 0.000 claims description 6
- 150000004760 silicates Chemical class 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052698 phosphorus Inorganic materials 0.000 claims description 3
- 239000011574 phosphorus Substances 0.000 claims description 3
- 238000002425 crystallisation Methods 0.000 claims description 2
- 230000005712 crystallization Effects 0.000 claims description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 5
- 239000012535 impurity Substances 0.000 claims 3
- 238000005039 chemical industry Methods 0.000 claims 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims 1
- 229910052925 anhydrite Inorganic materials 0.000 claims 1
- 239000003153 chemical reaction reagent Substances 0.000 claims 1
- 238000000227 grinding Methods 0.000 claims 1
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 claims 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N silicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims 1
- 150000003568 thioethers Chemical class 0.000 claims 1
- JGIATAMCQXIDNZ-UHFFFAOYSA-N Calcium sulfide Chemical compound [Ca]=S JGIATAMCQXIDNZ-UHFFFAOYSA-N 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 235000015450 Tilia cordata Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- BIGPRXCJEDHCLP-UHFFFAOYSA-N Ammonium bisulfate Chemical compound [NH4+].OS([O-])(=O)=O BIGPRXCJEDHCLP-UHFFFAOYSA-N 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- AQSJGOWTSHOLKH-UHFFFAOYSA-N Phosphite Chemical class [O-]P([O-])[O-] AQSJGOWTSHOLKH-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
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000013872 defecation Effects 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- XKUUMWKWUZRRPD-UHFFFAOYSA-N heptan-2-amine;sulfuric acid Chemical compound [O-]S([O-])(=O)=O.CCCCCC(C)[NH3+].CCCCCC(C)[NH3+] XKUUMWKWUZRRPD-UHFFFAOYSA-N 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- PVNIIMVLHYAWGP-UHFFFAOYSA-N nicotinic acid Chemical compound OC(=O)C1=CC=CN=C1 PVNIIMVLHYAWGP-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 239000000618 nitrogen fertilizer Substances 0.000 description 1
- 239000002367 phosphate rock Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000003760 tallow Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B5/00—Thomas phosphate; Other slag phosphates
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Fertilizers (AREA)
Description
<Desc/Clms Page number 1>
Engrais à base de nitrate ammonique et son procédé de fabrication.,
De multiples produits , tels que le gypse , les phosphorites , le calcaire ou telsque dessels donnant par la suite lieu à des réactions chimiques , ont été proposés pour être mélangés au nitrate ammonique et rendre l'emploi agricole de ce dernier aussi pratique que celui des engrais
EMI1.1
facilement emmagasina,bles et épendables
L'emploi de corps inertes a cependant pour inconvénient de ne permettre qu'un certain taux d'azote , maximum (au plus 20%), sous peine de voir la mélange montrer una hygroscopicité très nuisible pour son emploi .
La présente invention permet de réaliser avec du nitrate ammonique et un produit inerte , un mélange dans lequel la teneur en azote peut être très élevée et aller jusqu'à 32% .
Ce produit inerte est obtenu à partir des silicates simples ou complexes que l'on obtient comme sous-produit dans l'industrie métallurgique ou dans la fabrication du phosphore
EMI1.2
au four ordinaire ou au four blectrique .
Ces sous-produits na sont pas utilisables tels quels car ils renferment des corps , comme la chaux libre , le
<Desc/Clms Page number 2>
sulfure de calcium ou autres , qui réagissant avec le nitrate ammonique causent des pertes d'azote par volati- lisation de l'ammoniaque .
Il est donc indispensable d'empêcher cette action nuisible de ces divers composés
On a déjà. dans ce but proposé de traiter les scories Thomas par l'acide nitrique puis par du KCl , soit par du sulfate d'ammoniaque et des écumes de défécation de sucre- rie , soit encore par du sulfate ammonique seul , l'ammo- niaque dégagé étant récupéré .
Dans la présente invention , la chaux , le sulfure de calcium , et les autres composés qui libèrent niaque sont transformés par traitement à l'aide d'acide sulfurique 60 Bé , additionné éventuellement de la quantité d'eau nécessaire pour réaliser de bonnes conditions d'attaque .
La quantité d'acide sulfurique à employer est calculée par la détermination de la quantité d'ammoniaque libérée par traitement du produit envisagé à l'aide d'une solution de nitrate ammonique . Il est évidemment possible d'envi- sager une quantité nettement supérieure , pouvant aller jusqu'à celle nécessaire pour transformer tous les sili- cates en silice libre et en sulfate correspondant .
L'acide suif hydrique dégagé peut être récupéré par les moyens connus . En travaillant de cette fagon , on obtient un produit très facilement broyable , devenant d'une finesse remarquable , se mélangeant aisément au nitrate ammonique et empêchant la déliquescence de celui- ci même aux faibles doses de l'ordre de 10% . Le mélange peut se faire soit avec du nitrate ammonique sec , soit
<Desc/Clms Page number 3>
de Préférence dans les cuves de cristallisation ,dans les- quelles le nitrate ammonique est encore liquide à une richesse de 96% de pureté environ ,ou à l'état d'une solution concentrée et chaude EXEMPLE I .
100 kg de laitier de haut fourneau , renfermant notamment 1,5% de soufre sous forme de CaS sont attaqués par 29 kg d'acide sulfurique 60 Bé , dilués par 15 kg d'eau o
On récupère l'H2S dégagé
Le produit refroidi est broyé , une finesse correspon- dant au tamis 100 est suffisante puis mélangé à des quantités de nitrate ammonique à l'état fondu , vers 125 pouvant aller jusqu'à 1300 kg de nitrate ammonique ,ce qui , dans ce cas , donne un engrais à 32% d'azote , se conservant encore suffisamment bien et pouvant être épandu sans difficultés .
EXEMPLE II .
**ATTENTION** fin du champ DESC peut contenir debut de CLMS **.
<Desc / Clms Page number 1>
Fertilizers based on ammonium nitrate and its manufacturing process.,
Many products, such as gypsum, phosphorites, limestone or such as salts which subsequently give rise to chemical reactions, have been proposed to be mixed with ammonium nitrate and to make the latter's agricultural use as practical as that of fertilizer
EMI1.1
easily stored, damaged and releasable
The use of inert bodies, however, has the drawback of allowing only a certain maximum nitrogen content (at most 20%), under penalty of seeing the mixture show a hygroscopicity which is very harmful for its use.
The present invention makes it possible to produce, with ammonium nitrate and an inert product, a mixture in which the nitrogen content can be very high and range up to 32%.
This inert product is obtained from simple or complex silicates which are obtained as a by-product in the metallurgical industry or in the manufacture of phosphorus
EMI1.2
in the ordinary oven or in the electric oven.
These by-products cannot be used as they are because they contain substances, such as free lime,
<Desc / Clms Page number 2>
calcium sulphide or others, which reacts with ammonium nitrate causing nitrogen losses by volatilization of ammonia.
It is therefore essential to prevent this harmful action of these various compounds
We already have. with this proposed aim to treat Thomas slag with nitric acid then with KCl, either with ammonia sulphate and sugar factory defecation scum, or again with ammonium sulphate alone, the ammonia given off being recovered.
In the present invention, lime, calcium sulphide, and the other compounds which release niac are transformed by treatment with sulfuric acid 60 Bé, optionally added with the quantity of water necessary to achieve good conditions of d. 'attack.
The quantity of sulfuric acid to be employed is calculated by determining the quantity of ammonia liberated by treatment of the product envisaged with the aid of an ammonium nitrate solution. It is obviously possible to envisage a much greater quantity, which may go as far as that necessary to transform all the silicates into free silica and into the corresponding sulphate.
The hydrous tallow acid released can be recovered by known means. By working in this way, a product is obtained which is very easily crushable, becoming remarkably fine, easily mixing with ammonium nitrate and preventing the latter from deliquescence even at low doses of the order of 10%. Mixing can be done either with dry ammonium nitrate or
<Desc / Clms Page number 3>
Preferably in crystallization tanks, in which the ammonium nitrate is still liquid at a richness of about 96% purity, or in the form of a concentrated and hot solution. EXAMPLE I.
100 kg of blast furnace slag, containing in particular 1.5% sulfur in the form of CaS, are attacked by 29 kg of sulfuric acid 60 Bé, diluted with 15 kg of water o
We recover the released H2S
The cooled product is ground, a fineness corresponding to the 100 sieve is sufficient then mixed with quantities of ammonium nitrate in the molten state, around 125 which can range up to 1300 kg of ammonium nitrate, which, in this case, produces a 32% nitrogen fertilizer, which still keeps well enough and can be applied without difficulty.
EXAMPLE II.
** ATTENTION ** end of DESC field can contain start of CLMS **.
Claims (1)
Publications (1)
Publication Number | Publication Date |
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BE372524A true BE372524A (en) |
Family
ID=43613
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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BE372524D BE372524A (en) |
Country Status (1)
Country | Link |
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BE (1) | BE372524A (en) |
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0
- BE BE372524D patent/BE372524A/fr unknown
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