DE570150C - Process for drying Duengesalzen or chlorinated potassium in the potash industry - Google Patents

Process for drying Duengesalzen or chlorinated potassium in the potash industry

Info

Publication number
DE570150C
DE570150C DE1930570150D DE570150DD DE570150C DE 570150 C DE570150 C DE 570150C DE 1930570150 D DE1930570150 D DE 1930570150D DE 570150D D DE570150D D DE 570150DD DE 570150 C DE570150 C DE 570150C
Authority
DE
Germany
Prior art keywords
drying
duengesalzen
potassium
salt
potash industry
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
DE1930570150D
Other languages
German (de)
Inventor
Dr Hans Friedrich
Dipl-Ing Erich Ritter
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 Forschungs Anstalt GmbH
Original Assignee
Kali Forschungs Anstalt GmbH
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
Application filed by Kali Forschungs Anstalt GmbH filed Critical Kali Forschungs Anstalt GmbH
Application granted granted Critical
Publication of DE570150C publication Critical patent/DE570150C/en
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
    • C05D1/00—Fertilisers containing potassium
    • C05D1/005—Fertilisers containing potassium post-treatment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Processing Of Solid Wastes (AREA)
  • Fertilizers (AREA)

Description

Verfahren zum Trocknen von Düngesalzen oder Chlorkalium der Kaliindustrie Beim Trocknen von Kalisalzen in mit Feuergasen beheizten Trommeln hat es sich als notwendig erwiesen, das Trockengut und die Heizgase in gleicher Richtung durch den Trockner hindurchzuführen. Durch diese Maßnahme wird verhindert, daß ein Anbacken an der Trommelwandung stattfindet und Betriebsstörungen hervorgerufen werden. Es hat sich nun gezeigt, daß die Feuergase bereits weit vor ihrem Austritt aus der Trommel völlig an Feuchtigkeit gesättigt und somit nicht mehr in der Lage sind, das restliche anhaftende Wasser aufzunehmen. Dieses nicht vollkommen getrocknete Salz mit durch Kristallaggregate bedingter unregelmäßiger Oberfläche hat aber infolge seines Gehaltes an Chlormagnesium die unangenehme Eigenschaft, weitere Feuchtigkeit anzuziehen und alsdann seine gute Streufähigkeit, mehr oder weniger schnell zu verlieren. Die Erhaltung der Streufähigkeit bei der Lagerung, welche bei der Verwendung als Düngemittel für den Landwirt besonders wichtig ist, bleibt jedoch erhalten, wenn das bereits von Feuchtigkeit größtenteils befreite Salz vor seinem Austritt aus der Trommel einer so hohen Temperatur ausgesetzt wird,, daß die einzelnen Salzkristalle bzw. Aggregate oberflächlich angeschmolzen werden und eine rundliche Form erhalten, ohne durchzuschmelzen.Process for drying fertilizer salts or potassium chlorine in the potash industry When drying potash salts in drums heated with fire gases, it has proven to be proved necessary, the dry material and the heating gases in the same direction through the Through the dryer. This measure prevents caking takes place on the drum wall and malfunctions are caused. It it has now been shown that the fire gases well before they emerged from the The drum is completely saturated with moisture and is therefore no longer able to to absorb the remaining adhering water. This not completely dried However, salt with an irregular surface caused by crystal aggregates has the consequence Its chlorine magnesium content has the unpleasant property of further moisture to attract and then its good throwing ability to lose more or less quickly. The preservation of throwing power during storage, which when used as a Fertilizer is particularly important to the farmer, but is retained when the salt, which has already largely been freed of moisture, before it escapes the drum is exposed to such a high temperature that the individual salt crystals or aggregates are melted on the surface and given a rounded shape, without melting through.

Dieser Effekt, d. h. die durch oberflächliche Schmelzung hervorgerufene Rundung der Kristalle ivie auch das Austreiben der restlichen Feuchtigkeit können dadurch erzielt werden, daß der Trockenprozeß nicht wie bisher in einer einzigen Trommel vorgenommen wird, sondern daß man die Trocknung gemäß der Erfindung in einer Anlage mit zwei hintereinandergeschalteten Trommeln ausführt, indem man die Trockengase durch die erste Trommel im Gleichstrom und durch die andere im Gleich- oder Gegenstrom hindurchleitet.This effect, i. H. that caused by superficial melting Rounding of the crystals can also drive out the remaining moisture can be achieved in that the drying process is not as before in a single Drum is made, but that you drying according to the invention in a System with two drums connected in series, running the drying gases through the first drum in cocurrent and through the other in cocurrent or countercurrent passes through.

Die Trocknung von Salzen, insbesondere von Kochsalz in zwei Stufen, ist zwar bekannt, doch soll hierbei die zweite Stufe des Trockenprozesses nicht bis zur absoluten Trocknung und bei einer Temperatur durchgeführt werden, welche die vollständige Austreibung des Wassers gewährleistet. Demgegenüber soll nach dem Verfahren gemäß der Erfindung die zweite Stufe der Trocknung bei Temperaturen erfolgen, bei denen das Trockengut oberflächlich angeschmolzen ist und das den Düngesalzen beigemengte Chlormagnesium zersetzt wird, so daß ein absolut wasserfreies Salz gewonnen wird.The drying of salts, especially table salt, in two stages, is known, but the second stage of the drying process should not be used here to be carried out to absolute drying and at a temperature which the complete expulsion of the water is guaranteed. In contrast, after the Process according to the invention, the second stage of drying take place at temperatures in which the dry material has melted on the surface and that of the fertilizer salts added magnesium chloride is decomposed, so that an absolutely anhydrous salt is obtained will.

Claims (1)

PATENTANSPRUCH: Verfahren zum Trocknen von Düngesalzen oder Chlorkalium der Kaliindustrie in zwei Stufen, dadurch gelcennzeichnet, daß man in der ersten Stufe das Wasser durch Einwirkung der Trockengase im Gleichstrom mit der Bewegungsrichtung des Salzes bis auf geringe Reste austreibt und in der zweiten Stufe alsdann die Erhitzung des vorgetrockneten Salzes so weit steigert, daß die Kristalle oberflächlich angeschmolzen werden und das den Kalisalzen beigemengte Chlormagnesium sich zersetzt.PATENT CLAIM: Process for drying fertilizer salts or potassium chlorine the potash industry in two stages, characterized by that he in the first stage, the water through the action of the drying gases in cocurrent the direction of movement of the salt drives out to small residues and in the second Level then increases the heating of the predried salt so much that the Crystals are melted on the surface and added to the potassium salts Magnesium chlorine decomposes.
DE1930570150D 1930-07-12 1930-07-12 Process for drying Duengesalzen or chlorinated potassium in the potash industry Expired DE570150C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE570150T 1930-07-12

Publications (1)

Publication Number Publication Date
DE570150C true DE570150C (en) 1933-02-11

Family

ID=6568530

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1930570150D Expired DE570150C (en) 1930-07-12 1930-07-12 Process for drying Duengesalzen or chlorinated potassium in the potash industry

Country Status (1)

Country Link
DE (1) DE570150C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1032697B (en) * 1952-12-05 1958-06-19 Zsigmond De Galocsy Method and device for the extraction of superheated high-pressure steam from the moisture to be dried

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1032697B (en) * 1952-12-05 1958-06-19 Zsigmond De Galocsy Method and device for the extraction of superheated high-pressure steam from the moisture to be dried

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