AT218418B - - Google Patents

Info

Publication number
AT218418B
AT218418B AT357959A AT357959A AT218418B AT 218418 B AT218418 B AT 218418B AT 357959 A AT357959 A AT 357959A AT 357959 A AT357959 A AT 357959A AT 218418 B AT218418 B AT 218418B
Authority
AT
Austria
Prior art keywords
kaolin
ion exchangers
grain size
slurry
ion
Prior art date
Application number
AT357959A
Other languages
German (de)
Original Assignee
Gebrueder Dorfner O. H. G.
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 Gebrueder Dorfner O. H. G. filed Critical Gebrueder Dorfner O. H. G.
Application granted granted Critical
Publication of AT218418B publication Critical patent/AT218418B/de

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/40—Compounds of aluminium
    • C09C1/42—Clays
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C08K3/346—Clay
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Treatment Of Water By Ion Exchange (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zum Bleichen von Kaolin 
 EMI1.1 
 

 <Desc/Clms Page number 2> 

 der Aufschlämmung hin-und herbewegt oder die   Aufschlämmung   daran vorbeibewegt. Nach einer gewissen Zeit werden die Vorrichtungen wieder entfernt. Eine andere Möglichkeit besteht darin, dass man die Aufschlämmung nach der Art von Rieselfeldern über die aufgebreiteten Ionenaustauscher ein- oder mehrmals strömen lässt. Besonders bei Ionenaustauscher-Gemischen ist diese Anordnung sehr vorteilhaft. 



    PATENTANSPRÜCHE :    
1. Verfahren zum Bleichen von Kaolin, insbesondere zur Entfernung von Eisen, dadurch gekennzeichnet, dass in an sich bekannter Weise eine Kaolinaufschlämmung gesäuert und dann ein Reduktionsmittel zugesetzt wird, worauf unter Aufschlagung mit Wasser Ionenaustauscher zur Einwirkung kommen, die nach Reaktionsablauf entfernt werden.



   <Desc / Clms Page number 1>
 



  Process for bleaching kaolin
 EMI1.1
 

 <Desc / Clms Page number 2>

 reciprocates or moves the slurry past it. After a certain time, the devices are removed again. Another possibility is that the slurry is allowed to flow one or more times over the spread ion exchangers in the manner of trickle fields. This arrangement is particularly advantageous in the case of ion exchanger mixtures.



    PATENT CLAIMS:
1. A method for bleaching kaolin, in particular for removing iron, characterized in that a kaolin slurry is acidified in a manner known per se and then a reducing agent is added, whereupon ion exchangers come into effect with the impact of water, which are removed after the reaction has proceeded.

Claims (1)

2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass als Ionenaustauscher vorzugsweise organische Harze, insbesondere hochpolymere Kunstharze, eingesetzt werden. 2. The method according to claim 1, characterized in that organic resins, in particular high-polymer synthetic resins, are preferably used as ion exchangers. 3. Verfahren nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, dass nach Aufschlämmung des Kaolins im Wasser die Ionenaustauscher mit einer Korngrösse freibeweglich eingebracht werden, die über der des zu behandelnden Kaolins liegt und mittels eines Siebes entfernt wesden, dessen Maschenweite zwischen der Korngrösse der Ionenaustauscher und der des Kaolins liegt. 3. The method according to claims 1 and 2, characterized in that after slurrying the kaolin in the water, the ion exchangers are freely introduced with a grain size that is greater than that of the kaolin to be treated and removed by means of a sieve whose mesh size is between the grain size of the Ion exchanger and that of the kaolin. 4. Verfahren nach den Ansprüchen 1 bis 3, dadurch gekennzeichnet, dass Ionenaustauscher mit unterschiedlicher Korngrösse, jedoch grösser als der Korngrösse des Kaolins, eingesetzt werden. 4. The method according to claims 1 to 3, characterized in that ion exchangers with different grain sizes, but larger than the grain size of the kaolin, are used. 5. Verfahren nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, dass die Ionenaustauscher in Säcken oder sonstigen feuchtigkeits-und flüssigkeitsdurchlässigen Behältnissen in die Kaolin-Aufschläm- mung eingehängt, in der Aufschlämmung bewegt und nach Reaktionsablauf entfernt werden. 5. The method according to claims 1 and 2, characterized in that the ion exchangers are suspended in sacks or other moisture- and liquid-permeable containers in the kaolin slurry, moved in the slurry and removed after the reaction has taken place. 6. Verfahren nach den Ansprüchen 1 bis 5, dadurch gekennzeichnet, dass die Kaolin-Aufschlämmung an den Ionenaustauschern vorbeibewegt wird. 6. The method according to claims 1 to 5, characterized in that the kaolin slurry is moved past the ion exchangers. 7. Verfahren nach Anspruch 3, dadurch gekennzeichnet, dass die Korngrösse des Ionenaustauschers etwas oberhalb der Maschenweite des Siebes liegt. 7. The method according to claim 3, characterized in that the grain size of the ion exchanger is slightly above the mesh size of the sieve.
AT357959A 1958-06-02 1959-05-14 AT218418B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE218418T 1958-06-02

Publications (1)

Publication Number Publication Date
AT218418B true AT218418B (en) 1961-11-27

Family

ID=29592809

Family Applications (1)

Application Number Title Priority Date Filing Date
AT357959A AT218418B (en) 1958-06-02 1959-05-14

Country Status (1)

Country Link
AT (1) AT218418B (en)

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