DE537898C - Manufacture of fertilizers - Google Patents

Manufacture of fertilizers

Info

Publication number
DE537898C
DE537898C DER69452D DER0069452D DE537898C DE 537898 C DE537898 C DE 537898C DE R69452 D DER69452 D DE R69452D DE R0069452 D DER0069452 D DE R0069452D DE 537898 C DE537898 C DE 537898C
Authority
DE
Germany
Prior art keywords
fertilizers
manufacture
chlorides
mixtures
alkalis
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
Application number
DER69452D
Other languages
German (de)
Inventor
Dr Hans Brenek
Dr Fritz Rothe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kali Chemie AG
Original Assignee
Kali Chemie AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DER61403D external-priority patent/DE492310C/en
Application filed by Kali Chemie AG filed Critical Kali Chemie AG
Priority to DER69452D priority Critical patent/DE537898C/en
Application granted granted Critical
Publication of DE537898C publication Critical patent/DE537898C/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C05FERTILISERS; MANUFACTURE THEREOF
    • C05BPHOSPHATIC FERTILISERS
    • C05B13/00Fertilisers produced by pyrogenic processes from phosphatic materials
    • C05B13/02Fertilisers produced by pyrogenic processes from phosphatic materials from rock phosphates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Fertilizers (AREA)

Description

Herstellung von Düngemitteln In dem Patent 492 310 ist ein Verfahren zur Herstellung von Glühphosphaten beschrieben, welches darin besteht, daß man Phosphorite in Mischung mit Kieselsäure und Sulfaten oder Chloriden der Alkalien gegebenenfalls unter Zusatz von Kalk unter Einhaltung bestimmter Molverhältnisse einem Glühprozeß in Gegenwart von Wasserdampf. bei Temperaturen von etwa goo° C und darüber unterwirft.Manufacture of fertilizers In the patent 492 310 a process for the production of calcined phosphates is described, which consists in that one annealing process in the presence of steam phosphorites in a mixture with silicic acid and sulfates or chlorides of the alkalis, optionally with the addition of lime while maintaining certain molar ratios. Subjects at temperatures of about goo ° C and above.

Anstatt die Chloride und Sulfate der Alkalien einzeln zu verwenden, kann man aber auch Mischungen dieser Salze herstellen und dieselben für den Aufschluß von Rohphosphaten verwenden.Instead of using the chlorides and sulphates of the alkalis individually, but you can also prepare mixtures of these salts and use them for digestion use of rock phosphates.

Es wurde nun gefunden, daß die Verwendung von Mischungen von Alkalisulfaten und -chloriden für die Herstellung von Glühphosphaten dann besondere Vorteile mit sich bringt, wenn man sie in einer Form gebraucht, in der sie bereits in der Natur oder als Abfallsalze in der Industrie (Gewerbesalz) vorkommen. Solche Mischungen haben an und für sich nur geringen Eigenwert, erlangen jedoch dadurch, daß man sie zur Herstellung von Glühphosphaten verwendet, eine hohe wirtschaftliche Bedeutung. Ausführungsbeispiel roo Teile eines nordafrikanischen Rohphosphates mit 39,7 °/o P206, 47,0 °/o Ca0 (an Phosphorsäure gebunden), 5,61 °/o Ca0 (nicht an P206 gebunden) und 0,56 °/o S102 wurden mit i r Teilen OOuarzsand und 45 Teilen eines Abfallproduktes (Gewerbesalz), bestehend aus 6o °/o Natriumsulfat und 40 °/" Natriumchlorid, innig gemischt. Die Mischung wurde bei einer Temperatur von iooo° C unter Überleiten von Wasserdampf geglüht. Das Glühprodukt enthielt 28,11 °/o Gesamtphosphorsäure, 27,84/" citratlösliches P,0, (löslich in amm. Ammoncitratlösung nach Petermann), d. s. 9g °/o Aufschluß der Gesamtphosphorsäure.It has now been found that the use of mixtures of alkali sulfates and chlorides for the production of calcined phosphates has particular advantages if they are used in a form in which they are already found in nature or as waste salts in industry (industrial salt ) occurrence. Such mixtures have little intrinsic value in and of themselves, but because they are used for the production of calcined phosphates, they are of great economic importance. Exemplary embodiment roo parts of a North African rock phosphate with 39.7 % P206, 47.0% Ca0 (bound to phosphoric acid), 5.61% Ca0 (not bound to P206) and 0.56 % S102 with ir parts of ouarz sand and 45 parts of a waste product (industrial salt), consisting of 60% sodium sulfate and 40% sodium chloride, intimately mixed .11% total phosphoric acid, 27.84% citrate-soluble P.0, (soluble in amm. Ammonium citrate solution according to Petermann), ie 9%% digestion of the total phosphoric acid.

Claims (1)

PATENTANSPRUCH: Herstellung von Düngemitteln, weitere Ausbildung des nach Patent 492 310 geschützten Verfahrens, gekennzeichnet durch die Verwendung von Mischungen der Sulfate und Chloride der Alkalien, wie solche in der Natur oder als Abfallsalze in der Industrie vorkommen.PATENT CLAIM: Manufacture of fertilizers, further training of the according to patent 492 310 protected process, characterized by the use of mixtures of sulphates and chlorides of alkalis, such as those in nature or occur as waste salts in industry.
DER69452D 1924-06-23 1926-11-26 Manufacture of fertilizers Expired DE537898C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DER69452D DE537898C (en) 1924-06-23 1926-11-26 Manufacture of fertilizers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DER61403D DE492310C (en) 1924-06-23 1924-06-23 Manufacture of fertilizers
DER69452D DE537898C (en) 1924-06-23 1926-11-26 Manufacture of fertilizers

Publications (1)

Publication Number Publication Date
DE537898C true DE537898C (en) 1931-11-07

Family

ID=27806002

Family Applications (1)

Application Number Title Priority Date Filing Date
DER69452D Expired DE537898C (en) 1924-06-23 1926-11-26 Manufacture of fertilizers

Country Status (1)

Country Link
DE (1) DE537898C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE745129C (en) * 1935-04-27 1944-02-26 Der Chemischen Produkten Fabri Process for the production of phosphate fertilizers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE745129C (en) * 1935-04-27 1944-02-26 Der Chemischen Produkten Fabri Process for the production of phosphate fertilizers

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