DE1692434B2 - Process for the production of a mineral feed additive - Google Patents
Process for the production of a mineral feed additiveInfo
- Publication number
- DE1692434B2 DE1692434B2 DE1692434A DEG0050667A DE1692434B2 DE 1692434 B2 DE1692434 B2 DE 1692434B2 DE 1692434 A DE1692434 A DE 1692434A DE G0050667 A DEG0050667 A DE G0050667A DE 1692434 B2 DE1692434 B2 DE 1692434B2
- Authority
- DE
- Germany
- Prior art keywords
- phosphoric acid
- magnesium
- sodium
- neutralization
- monohydrogen phosphate
- 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.)
- Ceased
Links
- 238000000034 method Methods 0.000 title claims description 9
- 229910052500 inorganic mineral Inorganic materials 0.000 title claims description 3
- 238000004519 manufacturing process Methods 0.000 title claims description 3
- 239000011707 mineral Substances 0.000 title claims description 3
- 239000003674 animal food additive Substances 0.000 title 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 25
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 24
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 8
- 239000011734 sodium Substances 0.000 claims description 8
- 229910052708 sodium Inorganic materials 0.000 claims description 8
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 7
- 239000011777 magnesium Substances 0.000 claims description 7
- 229910052749 magnesium Inorganic materials 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 238000006386 neutralization reaction Methods 0.000 claims description 7
- 239000000047 product Substances 0.000 claims description 7
- 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 claims description 6
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 5
- 229910052791 calcium Inorganic materials 0.000 claims description 5
- 239000011575 calcium Substances 0.000 claims description 4
- 150000004649 carbonic acid derivatives Chemical class 0.000 claims description 3
- 150000004679 hydroxides Chemical class 0.000 claims description 3
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 claims description 2
- 229910052785 arsenic Inorganic materials 0.000 claims description 2
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 claims description 2
- FUFJGUQYACFECW-UHFFFAOYSA-L calcium hydrogenphosphate Chemical compound [Ca+2].OP([O-])([O-])=O FUFJGUQYACFECW-UHFFFAOYSA-L 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- 235000019700 dicalcium phosphate Nutrition 0.000 claims description 2
- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 claims description 2
- 239000011737 fluorine Substances 0.000 claims description 2
- 229910052731 fluorine Inorganic materials 0.000 claims description 2
- 238000007873 sieving Methods 0.000 claims description 2
- 239000008247 solid mixture Substances 0.000 claims description 2
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical class [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 claims description 2
- MHJAJDCZWVHCPF-UHFFFAOYSA-L dimagnesium phosphate Chemical compound [Mg+2].OP([O-])([O-])=O MHJAJDCZWVHCPF-UHFFFAOYSA-L 0.000 claims 1
- 239000006052 feed supplement Substances 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 235000011121 sodium hydroxide Nutrition 0.000 description 7
- 238000001816 cooling Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000001354 calcination Methods 0.000 description 5
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 229910019142 PO4 Inorganic materials 0.000 description 2
- OMKPRTQVLDBJSG-UHFFFAOYSA-J calcium;magnesium;dicarbonate;hydrate Chemical compound [OH-].[Mg+2].[Ca+2].OC([O-])=O.[O-]C([O-])=O OMKPRTQVLDBJSG-UHFFFAOYSA-J 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-L Phosphate ion(2-) Chemical compound OP([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-L 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 235000013539 calcium stearate Nutrition 0.000 description 1
- 239000008116 calcium stearate Substances 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 235000014380 magnesium carbonate Nutrition 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 235000019359 magnesium stearate Nutrition 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/12—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic in rotating drums
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K20/00—Accessory food factors for animal feeding-stuffs
- A23K20/20—Inorganic substances, e.g. oligoelements
- A23K20/26—Compounds containing phosphorus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/28—Moving reactors, e.g. rotary drums
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/16—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by suspending the powder material in a gas, e.g. in fluidised beds or as a falling curtain
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/26—Phosphates
- C01B25/45—Phosphates containing plural metal, or metal and ammonium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
- B01J2208/00008—Controlling the process
- B01J2208/00017—Controlling the temperature
- B01J2208/00504—Controlling the temperature by means of a burner
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
- B01J2208/00008—Controlling the process
- B01J2208/00017—Controlling the temperature
- B01J2208/0053—Controlling multiple zones along the direction of flow, e.g. pre-heating and after-cooling
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Polymers & Plastics (AREA)
- Animal Husbandry (AREA)
- Food Science & Technology (AREA)
- Engineering & Computer Science (AREA)
- Zoology (AREA)
- Fodder In General (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Description
Gegenstand des Hauptpatentes ist ein Verfahren zur Herstellung eines mineralischen Beifuttermittels aus Natrium-, Magnesium- und gegebenenfalls C'alciumorthophosphaten durch Umsetzen von konzentrierter Phosphorsiiure mit Verbindungen des Natriums, Magnesiums und gegebenenfalls Calciums, das dadurch gekennzeichnet ist, daß eine in bekannter Weise von Fluor und Arsen beireite Phosphorsaure mit einem P2O<-Gehalt von 40 bis 60% gleichzeitig mit Oxiden, Hydroxiden oder Carbonaten des Natriums, Magnesiums und gegebenenfalls Calciums in einem stöchiometrischen Mengenverhältnis entsprechend einem Gemisch folgender Zusammensetzung in Mf/IprozentThe main patent relates to a process for the production of a mineral feed from sodium, magnesium and optionally calcium orthophosphates by reacting concentrated phosphoric acid with compounds of sodium, magnesium and optionally calcium, which is characterized in that one of fluorine and Arsenic eliminates phosphoric acid with a P 2 O <content of 40 to 60% at the same time as oxides, hydroxides or carbonates of sodium, magnesium and optionally calcium in a stoichiometric ratio corresponding to a mixture of the following composition in Mf / I percent
Dinatriummonohydrogcnphosphat 60 bis 25%Disodium Monohydrogen Phosphate 60 to 25%
Magnesiuninionohydrogenphosphat 20 bis 50% Caclsiiimmonohydrogcnphosphat 0 bis 25%Magnesium ionohydrogen phosphate 20 to 50% Calcium monohydrogen phosphate 0 to 25%
neutralisiert, das bei dieser Neutralisation entstehende heiße, feuchtkriimelige Produkt im Luftstrom abgekühlt und getrocknet wird, Feinst- und Grobanteile des Produktes durch Sieben abgetrennt und gegebenenfalls nach Zerkleinerung der Grobanteile - in die Neutralisation zurückgeführt werden.neutralized, the resulting from this neutralization hot, moist, crumbly product is cooled and dried in an air stream, fine and coarse fractions of the product separated by sieving and, if necessary, after comminution of the coarse fractions - be returned to neutralization.
Bei der Durchführung des Verfahrens in großtechnischem Ausmaß wurden einige weitere Verbesserungen gefunden, die den Gegenstand der vorliegenden Zusat/anmcldung bilden.When the process was carried out on a commercial scale, several further improvements were made found, which form the subject of the present amendment.
Beim Vermischen der Ausgangsstoffe - Phosphorsäure, Soda bzw. Natronlauge, Magnesit oder Dolomithydrat-durchläuft das Gemisch unter starker Erwärmung eine Breiphase, die den Kraftbedarf der Mischorgane des Mischers vorübergehend stark erhöht. Diese Erscheinung wird zwar bereits durch das Zurückführen des Unter- bzw. zerkleinerten Überkorns gemäß dem Verfahren des Hauptpatentes sehr gemildert und abgekürzt, jedoch erfordert sich eine erheblich verstärkte Auslegung des Mischers bzw. des Antriebsmotors.When mixing the starting materials - phosphoric acid, Soda or caustic soda, magnesite or dolomite hydrate runs through the mixture becomes a pulp phase under intense heating, which temporarily increases the power requirement of the mixer of the mixer. This phenomenon is already caused by the return of the undersized or comminuted oversized grain according to the procedure of the main patent, very milder and abbreviated, but requires one Significantly reinforced design of the mixer or the drive motor.
Erfindungsgemäß wird die Bildung einer Breiphase dadurch vermieden, daß die Neutralisation mit der Phosphorsäure in einer horizontal liegenden Mischtrommel mit Hebeleisten erfolgt, aus denen die feinteiligen festen Mischungskomponenten in einem feinen Schleier herabrieseln und dabei durch in diesen eingesprühten Phosphorsäure, gegebenenfalls auch eingesprühte Natronlauge, umgesetzt werden.According to the invention, the formation of a pulp phase is avoided that the neutralization with the Phosphoric acid is carried out in a horizontal mixing drum with lever strips from which the finely divided solid mixture components trickle down in a fine veil and thereby through them sprayed-in phosphoric acid, optionally also sprayed-in sodium hydroxide solution, are converted.
Die festen Reaktionskomponenten - Oxide, Hydroxide oder Carbonate und gegebenenfalls Rückgut aus der Siebanlage - werden über eine Schurre in das vordere Ende der Mischtrommel eingetragen. Beim Drehen der Trommel entsteht mit Hilfe der Hebeleisten ein dichter, gleichmäßig über dem Querschnitt der Trommel verteilter Schleier. In diesen Schleier werden erfindungsgemäß die flüssigen Komponenten, Phosophorsäure und gegebenenfalls Natronlauge, mit Hilfe einer Sprühdüse eingetragen. Bei der Umsetzung tritt eine starke Wärme-Entwicklung auf, und die dabei entstehenden Reaktionsgase, Wasserdampf und gegebenenfalls Kohlensäure, werden mit Hilfe eines Ventilators am Austrittsrand der Trommel abgesogen. Auf diese Weise entsteht unmittelbar ein feuchtkrümeliges und teilweise schon granuliertes Reaktionsprodukt, ohne daß zwischendurch eine Breiphase auftritt.The solid reaction components - oxides, hydroxides or carbonates and possibly returned material from the screening plant - are fed into the front end of the mixing drum via a chute. At the Turning the drum with the help of the lever bars creates a dense, even cross-section the veil distributed over the drum. According to the invention, the liquid components, Phosphoric acid and, if necessary, sodium hydroxide solution, entered using a spray nozzle. In the implementation a strong development of heat occurs, and the resulting reaction gases, water vapor and carbon dioxide, if necessary, are sucked off with the help of a fan at the outlet edge of the drum. This immediately creates a moist, crumbly and partially granulated one Reaction product without a pulp phase occurring in between.
Das so hergestell' Frischgut wird dann gemäß dem Verfahren des Hauptpatentes in einer Kühltrommel mit Hilfe eines eingesogenen Frischluftstromes abgekühlt und dadurch von dem anhaftenden Wasser befreit und schließlich in einer nachgeschalteten Siebanlage in Gutkorn, vorzugsweise 0,5-2 mm, Überkorn und Unterkorn aufgeteilt.The fresh product produced in this way is then placed in a cooling drum according to the method of the main patent cooled with the help of a fresh air stream sucked in and freed from the adhering water and finally in a downstream screening plant in good grain, preferably 0.5-2 mm, oversize grain and undersized grain.
Das bei dieser Arbeitsweise anfallende Uberkorn kann zunächst noch mehr oder weniger plastisch sein, weil insbesondere die gröberen Körner im Luftstrom nicht völlig abgekühlt sind. Dies kann bei der Vermahlung im Zuge der Rückführung in die Reaktion zu Schwierigkeiten, insbesondere Anbackungen in der Mühle, führen. Es hat sich im praktischen Betrieb gezeigt, daß diese Schwierigkeiten völlig vermieden werdf Ii können, wenn man die festen Reaktionskomponenten schon vor der Einführung des Grobkornes in die Mühle diesem zusetzt.The oversized grain that arises in this way of working can initially be more or less plastic, because the coarser grains in particular have not cooled down completely in the air stream. This can happen when grinding in the course of the return to the reaction to difficulties, especially caking in the Mill, run. It has been shown in practical operation that these difficulties are completely avoided werdf ii can if one considers the solid reaction components before the coarse grain is introduced into the mill.
Die nach dem Verfahren des Hauptpatentes hergestellten Monohydrogenphosphatgemische sind durch die Wasserverdampfung bei der Reaktion der Komponenten in der Mischtrommel und in der nachgeschalteten Kühltrommel zwar frei von anhaftender !■dichtigkeit und insoweit trocken und frcirieselnd. Sie enthalten aber je nach Konzentration der verwendeten Phosphorsäure bzw. Natronlauge mehr oder weniger große Mengen Kristallwasser. Es hat sich nun in der Praxis gezeigt, daß dieses Kristallwasser bei der Lagerung des Phosphatgemisches in größeren Gebinden, insbesondere z. B. in Silos, und bei wechselnden Temperaturen auf dem Transportwege zu nachträglichem Erhärten bzw. Bildung von Klumpen führenThe monohydrogen phosphate mixtures prepared by the process of the main patent are through the evaporation of water during the reaction of the components in the mixing drum and in the downstream one Cooling drum is free of sticking! ■ tightness and therefore dry and freezing. However, they contain more or more, depending on the concentration of the phosphoric acid or sodium hydroxide solution used less large amounts of crystal water. It has now been shown in practice that this water of crystallization in the Storage of the phosphate mixture in larger containers, especially z. B. in silos, and with changing Temperatures on the transport route lead to subsequent hardening or the formation of lumps
kann, wodurch die Weiterverarbeitung erschwert ist.can, which makes further processing more difficult.
Natürlich kann dem entgegengewirkt werden, indem das Gut mit geeigneten Trennmitteln, wie Calcium- oder Magnesiumstearat, gepudert wird.Of course, this can be counteracted by using suitable separating agents such as calcium or magnesium stearate, is powdered.
Es wurde aber gefunden, daß diese Schwierigkeit völlig vermieden werden kann, wenn man das Produkt durch Calcinieren mehr oder weniger weitgehend auch von dem Kristallwasser befreit. Diese Calcinierung kann in bekannter Weise in der Trockentrommel gleich im Anschluß an das Mischen in der Mischtrommel durchgeführt werden. In einfacher Weise erfolgt die Calcinierung dadurch, daß die durch die Kühltrommel durchgesogene Luft z. B. auf 50-100° erwärmt wird.It has been found, however, that this difficulty can be completely avoided if one uses the product more or less largely freed from the water of crystallization by calcining. This calcination can in a known manner in the drying drum immediately after mixing in the mixing drum be performed. The calcination is carried out in a simple manner in that the through the cooling drum sucked air z. B. is heated to 50-100 °.
Pro Stunde werden 3000 kg Rückgut, bestehend aus Unterkorn (unter 0,5 mm) und Überkorn (über 2,0 mm), 1070 kg Soda 98% und 650 kg Dolomithydrat mit 42,5% CaO und 30,6% MgO, gemeinsam kontinuierlich vermählen. Das feinzerkleinerte Gemisch aus Rückgut und festen Reaktionskomponenten gelangt in die horizontal laufende Reaktionstrommel von 5 m Länge und 2 m Durchmesser. Die Trommel ist in bekannter Weise mit Hebeblechen versehen, so daß beim Rotieren ein gleichmäßig in Längsrichtung und Querschnitt verteilter Schleier des aus den Hebeblechen herabrieselnden Mischgutes entsteht.3000 kg of returned goods, consisting of undersized (under 0.5 mm) and oversized (over 2.0 mm), 1070 kg soda 98% and 650 kg dolomite hydrate with 42.5% CaO and 30.6% MgO, together grind continuously. The finely ground mixture of returned material and solid reaction components enters the horizontally running reaction drum of 5 m length and 2 m diameter. the Drum is provided in a known manner with lifting plates, so that when rotating a uniformly in Longitudinal direction and cross-section of the veil of the mixed material trickling down from the lifting plates arises.
In diesen Schleier werden durch eine Düse stündlich 3110 kg Phosphorsäure mit 45% P2O5, die über einen Wärmeaustauscher auf "7O" ervärmt ist, eingedüst. 3110 kg of phosphoric acid with 45% P 2 O 5 , which is heated to "7 O" via a heat exchanger, are injected into this veil every hour through a nozzle.
Durch die Reaktionswärme werden etwa 375 kg Wasser verdampft und 430 kg Kohlensäure ausgetrieben Die Brüden werden mit einem Ventilator mit eingesogener Frischluft aus der Trommel abgesogen.The heat of reaction evaporates about 375 kg of water and expels 430 kg of carbonic acid The vapors are sucked in with fresh air from the drum with a fan.
Das aus der Reaktionstrommel austretende heiße und feuchtkrümelige Gut wird durch eine Kühltromme! von 8 m Länge und 2 m Durchmesser, die mit Hebeleisten und Rieseleinbauten versehen ist, geführt und durch im Gegenstrom hindurchgesaugte Luft abgekühlt. The hot and crumbly moist material emerging from the reaction drum is passed through a cooling drum! 8 m long and 2 m in diameter, which is provided with lifting strips and trickle fittings and cooled by air sucked through in countercurrent.
Das gekühlte und dabei gleichzeitig von anhaftender Feuchtigkeit befreite Material wird über Vibrationssiebe klassiert. Unterkorn unter 0,5 mm und Überkorn über 2,0 mm werden in den Prozeß zurück-■ geführt.The cooled and at the same time freed from adhering moisture, is passed through vibrating sieves classified. Undersized grains under 0.5 mm and oversized grains over 2.0 mm are returned to the process guided.
So werden stündlich 4000 kg Fertiggut mit folgender Analyse erhalten: 35,0% P1O5 (15,5% P), 6,9% CaO, 5,0% MgO, 15,3% Na2O.This gives 4000 kg of finished goods per hour with the following analysis: 35.0% P 1 O 5 (15.5% P), 6.9% CaO, 5.0% MgO, 15.3% Na 2 O.
in Beispiel 2in example 2
Die in Beispiel 1 beschriebene Anlage wird insofern anders betrieben, als anstelle von Soda Natronlauge eingesetzt und zwecks Calcinierung durch die Kühltrommel erwärmte Luft gesaugt wird.The plant described in Example 1 is operated differently in that sodium hydroxide solution is used instead of soda used and for the purpose of calcination, heated air is sucked through the cooling drum.
ι ~> Stündlich werden bis zu 4 t calciniertes Rückgut und 650 kg Dolomitkalkhydrat, der 42,5% CaO und 30,6% MgO enthält, gemeinsam vermählen und in die Reaktionstrommel geführt. Auf den Feststoffschleierwerden stündlich 2500 kg Phosphorsäure mitι ~> Up to 4 tons of calcined return material are produced every hour and 650 kg dolomite lime hydrate, which contains 42.5% CaO and 30.6% MgO, ground together and in the reaction drum out. 2500 kg of phosphoric acid are added to the solid curtain every hour
-'<> 56% P1O5 und 1580 kg Natronlauge mit 50% NaOH, die kontinuierlich auf ca. 60° in Durchlauferhitzern erwärmt werden, aufgedüst. Die durch die Neutralisation freiwerdende Wärmemenge führt zur Bildung von Wasserdampf, welcher über den Brüdenventilator ab-- '<> 56% P 1 O 5 and 1580 kg sodium hydroxide solution with 50% NaOH, which are continuously heated to approx. 60 ° in flow heaters, sprayed on. The amount of heat released by the neutralization leads to the formation of water vapor, which is removed by the vapor fan.
j) geführt wird.j) is performed.
DasFrischgu? wird in der im Beispiel 1 zum Kühlen benutzten Trommel calciniert, indem Luft, die mit einem Heizölbrenner erwärmt wird, zusammen mit Außenluft durch diese Trommel gesaugt wird. Der ge-The fresh casserole? is used in example 1 for cooling used drum is calcined by adding air that is heated with a fuel oil burner together with outside air is sucked through this drum. The ge
iii wünschte Calcinierungsgrad wird dabei in bekannter Weise durch Regelung der Temperatur, z. B. auf 50°-100° der auch noch darüber, bzw. der Menge der übergeleiteten Warmluft eingestellt.iii the desired degree of calcination is known Way by regulating the temperature, e.g. B. to 50 ° -100 ° which is still above, or the amount the transferred warm air is set.
Das getrocknete Gut wird, wie im vorhergehendenThe dried material becomes, as in the previous one
ι·> Beispiel beschrieben, gekühlt und klassiert. Pro Stunde werden 3500 kg Fertiggut und bis zu 4000 kg Rückgut erhalten. Das aus Uberkorn, Unterkorn und Staub bestehende Rückgut wird in den Prozeß zurückgeführt. ι ·> Example described, cooled and classified. Per Hour, 3500 kg of finished goods and up to 4000 kg of returned goods are received. That made up of oversize, undersize and Dust that is returned is fed back into the process.
4(i Die Analysenwerte des Fertiggutes betragen:
40,0% P2O5
7,9% CaO
5,7% MgO
17,5% Na2O4 (i The analysis values of the finished product are:
40.0% P 2 O 5
7.9% CaO
5.7% MgO
17.5% Na 2 O
Claims (1)
Dinatriummonohydrogenphosphat 60 bis 25% Magnesiummonohydrogenphosphat 20 bis 50%Process for the production of a mineral feed supplement from sodium, magnesium and optionally calcium orthophosphates by reacting concentrated phosphoric acid with compounds of sodium, magnesium and optionally calcium, whereby a phosphoric acid freed in a known manner from fluorine and arsenic with a P 2 O 5 content of 40 up to 60% simultaneously with oxides, hydroxides or carbonates of sodium, magnesium and optionally calcium in a stoichiometric proportion corresponding to a mixture of the following composition in mol percent:
Disodium monohydrogen phosphate 60 to 25% Magnesium monohydrogen phosphate 20 to 50%
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1692434A DE1692434B2 (en) | 1967-07-19 | 1967-07-19 | Process for the production of a mineral feed additive |
| IL30335A IL30335A (en) | 1967-07-19 | 1968-07-09 | A mineral feed supplement and process and apparatus for the manufacture thereof |
| GB32923/68A GB1242092A (en) | 1967-07-19 | 1968-07-10 | Mineral animal feed supplements |
| BE718124D BE718124A (en) | 1967-07-19 | 1968-07-16 | |
| FR1576683D FR1576683A (en) | 1967-07-19 | 1968-07-17 | |
| JP43051081A JPS4812786B1 (en) | 1967-07-19 | 1968-07-18 | |
| CH1074768A CH507664A (en) | 1967-07-19 | 1968-07-18 | Method and device for the production of a mineral supplementary feed |
| NL6810309.A NL163485C (en) | 1967-07-19 | 1968-07-19 | METHOD FOR PREPARING A MINERAL ADDITIVE. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1692434A DE1692434B2 (en) | 1967-07-19 | 1967-07-19 | Process for the production of a mineral feed additive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE1692434A1 DE1692434A1 (en) | 1971-12-30 |
| DE1692434B2 true DE1692434B2 (en) | 1980-01-17 |
Family
ID=7129452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1692434A Ceased DE1692434B2 (en) | 1967-07-19 | 1967-07-19 | Process for the production of a mineral feed additive |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS4812786B1 (en) |
| BE (1) | BE718124A (en) |
| CH (1) | CH507664A (en) |
| DE (1) | DE1692434B2 (en) |
| FR (1) | FR1576683A (en) |
| GB (1) | GB1242092A (en) |
| IL (1) | IL30335A (en) |
| NL (1) | NL163485C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0049363A1 (en) * | 1980-10-04 | 1982-04-14 | Chemische Fabrik Kalk GmbH | Process for the preparation of a phosphates mixture containing sodium, calcium and optionally magnesium as an animal feed |
| EP0155251A1 (en) * | 1984-03-13 | 1985-09-18 | Boliden Aktiebolag | A granular product containing, together with reacted and non-reacted phosphoric acid, magnesium oxide |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3212325A1 (en) * | 1982-04-02 | 1983-10-06 | Hoechst Ag | METHOD FOR PRODUCING A GRANULATED FEED PHOSPHATE |
-
1967
- 1967-07-19 DE DE1692434A patent/DE1692434B2/en not_active Ceased
-
1968
- 1968-07-09 IL IL30335A patent/IL30335A/en unknown
- 1968-07-10 GB GB32923/68A patent/GB1242092A/en not_active Expired
- 1968-07-16 BE BE718124D patent/BE718124A/xx not_active IP Right Cessation
- 1968-07-17 FR FR1576683D patent/FR1576683A/fr not_active Expired
- 1968-07-18 JP JP43051081A patent/JPS4812786B1/ja active Pending
- 1968-07-18 CH CH1074768A patent/CH507664A/en not_active IP Right Cessation
- 1968-07-19 NL NL6810309.A patent/NL163485C/en not_active IP Right Cessation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0049363A1 (en) * | 1980-10-04 | 1982-04-14 | Chemische Fabrik Kalk GmbH | Process for the preparation of a phosphates mixture containing sodium, calcium and optionally magnesium as an animal feed |
| EP0155251A1 (en) * | 1984-03-13 | 1985-09-18 | Boliden Aktiebolag | A granular product containing, together with reacted and non-reacted phosphoric acid, magnesium oxide |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS4812786B1 (en) | 1973-04-23 |
| DE1692434A1 (en) | 1971-12-30 |
| NL163485B (en) | 1980-04-15 |
| CH507664A (en) | 1971-05-31 |
| IL30335A (en) | 1972-02-29 |
| BE718124A (en) | 1968-12-31 |
| IL30335A0 (en) | 1968-09-26 |
| NL6810309A (en) | 1969-01-21 |
| GB1242092A (en) | 1971-08-11 |
| NL163485C (en) | 1980-09-15 |
| FR1576683A (en) | 1969-08-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8235 | Patent refused |