EP3292913B1 - Verfahren zur starken reduzierung der grösse von granulatmaterial - Google Patents

Verfahren zur starken reduzierung der grösse von granulatmaterial Download PDF

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Publication number
EP3292913B1
EP3292913B1 EP16188026.5A EP16188026A EP3292913B1 EP 3292913 B1 EP3292913 B1 EP 3292913B1 EP 16188026 A EP16188026 A EP 16188026A EP 3292913 B1 EP3292913 B1 EP 3292913B1
Authority
EP
European Patent Office
Prior art keywords
mixing vessel
rotor stator
high speed
granular material
stator mixer
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.)
Active
Application number
EP16188026.5A
Other languages
English (en)
French (fr)
Other versions
EP3292913A1 (de
Inventor
Maarten Hammink
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.)
Polychimique Nv
Treatex NV
Ecochem International NV
Original Assignee
Polychimique Nv
Treatex NV
Ecochem International NV
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 Polychimique Nv, Treatex NV, Ecochem International NV filed Critical Polychimique Nv
Priority to ES16188026T priority Critical patent/ES2990080T3/es
Priority to EP16188026.5A priority patent/EP3292913B1/de
Priority to PCT/EP2017/072597 priority patent/WO2018046669A1/en
Publication of EP3292913A1 publication Critical patent/EP3292913A1/de
Application granted granted Critical
Publication of EP3292913B1 publication Critical patent/EP3292913B1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/08—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within vertical containers
    • B02C18/083—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within vertical containers with a disc rotor having generally radially extending slots or openings bordered with cutting knives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/06—Selection or use of additives to aid disintegrating

Definitions

  • the present invention relates to aqueous systems. More specifically the present invention relates to that can be safely manufactured while using equipment standard in the art of dispersion technology.
  • the process in accordance with the present invention may comprise the use of one or more thickeners, which may be of different types, e.g. thickeners that are able to swell in water during the initial stage of the process, and/or thickeners which are able to control and adjust the desired viscosity in the final stage of the process.
  • the process in accordance with the present invention may also comprise the use of one or more dispersing agents for aqueous systems.
  • rotor stator mixer refers to an equipment substantially as described in EP 2 586 849 .
  • high speed disperser having a mixing disk refers to a so-called high speed disperser (or dissolver) having a mixing disk, either closed or open, preferably having 1, 2 or 3 levels of tooth shapes at the edge of the disk. Examples of such, or funcionally equivalent, are available from various suppliers, including but without limitation:
  • the type and useful amount of such mineral thickening agents may depend upon the granular material chemical and upon the solids content of the dispersion, but are well known to the person skilled in dispersion technology.
  • the proper selection of the amount of thickener added at this step is also based on its capacity to afford the target final viscosity of the liquid (aqueous) aqueous system without negatively interfering with the other physical and chemical characteristics of the fine particles produced in the final stage.
  • an amount of thickener from 0.2% to 1% by weight, is well sufficient for meeting this requirement.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)

Claims (13)

  1. Verfahren zum Verringern der durchschnittlichen Partikelgröße eines Granulats um einen Faktor von mindestens 20, wobei das Verfahren die folgenden Schritte umfasst:
    - Bereitstellen eines Mischgefäßes, das mit (A) einem Hochgeschwindigkeitsdispergierer, der eine Mischscheibe aufweist, und (B) einem Rotor-Stator-Mischer ausgestattet ist,
    - Bereitstellen eines flüssigen Mediums für das Mischgefäß, wobei das flüssige Medium darin aufgelöst oder dispergiert eine Mahlhilfschemikalie umfasst, die aus der Gruppe aus Sand, Silikatpulver, Phosphorsäure, Schwefelsäure, Salpetersäure und anderen starken oder schwachen Säuren ausgewählt wird,
    - Einschalten des Hochgeschwindigkeitsdispergierers (A) mit einer Umfangsgeschwindigkeit der Mischscheibe im Bereich von 1 bis 50 m/s,
    - Hinzugeben eines Granulats mit einer durchschnittlichen Partikelgröße im Bereich von 1 bis 5 mm zu dem Mischgefäß, wobei das Mineralgranulat mit dem flüssigen Medium kompatibel ist,
    - Betätigen des Hochgeschwindigkeitsdispergierers (A) für eine Zeitspanne, die ausreicht, um die durchschnittliche Größe des Granulats um einen Faktor von mindestens 10 zu verringern, wodurch Granulatkörner mit einer durchschnittlichen Zwischengröße im Bereich von 0,1 bis 0,5 mm erzeugt werden,
    - Einschalten des Rotor-Stator-Mischers (B) und Betätigen des Rotor-Stator-Mischers für eine Zeitspanne, die ausreicht, um die durchschnittliche Größe der Zwischengranulatkörner um einen Faktor von mindestens 2 zu verringern, wodurch feine Partikel mit einer durchschnittlichen Größe im Bereich von 0,001 bis 50 µm erzeugt werden.
  2. Verfahren nach Anspruch 1, wobei das Granulat aus der Gruppe bestehend aus Phosphaten, Sulfaten, Boraten, Hydraten, Zeolithen, Hypophosphiten, Erdalkalicarbonaten und Erdalkalioxiden und -hydroxiden ausgewählt wird.
  3. Verfahren nach Anspruch 1 oder Anspruch 2, wobei der Rotor-Stator-Mischer (B) entweder ein Rotor-Stator-Mischer vom Typ eines Chargen-Innenmischers (B1) oder ein Inline-Rotor-Stator-Mischer (B2) ist, der extern an das Mischgefäß angeschlossen ist (A).
  4. Verfahren nach einem der Ansprüche 1 bis 3, wobei der Hochgeschwindigkeitsdispergierer (A) einer vom Typ eines Einwellen-Hochgeschwindigkeitsdispergierers mit geschlossener oder offener Scheibe und mit mindestens einem Satz von Zähnen am Rand der Scheibe ist.
  5. Verfahren nach einem der Ansprüche 1 bis 4, wobei das für das Mischgefäß bereitgestellte flüssige Medium aus der Gruppe bestehend aus Folgendem ausgewählt wird:
    - Monoethanolamin (MEA), Diethanolamin (DEA), Triethanolamin (TEA),
    - Wasser, optional mit einer Beimischung von Ammoniak,
    - Resorcin-bis(diphenylphosphat) und andere Weichmacher auf Phosphatbasis und
    - Mischungen davon in beliebigen geeigneten Verhältnissen.
  6. Verfahren nach einem der Ansprüche 1 bis 5, ferner den Schritt des Bereitstellens einer ersten Art eines Verdickungsmittels für das Mischgefäß vor oder gleichzeitig mit dem Bereitstellen des flüssigen Mediums für das Mischgefäß umfassend.
  7. Verfahren nach Anspruch 6, wobei die erste Art des Verdickungsmittels Xanthangummi oder Carboxymethylcellulose ist.
  8. Verfahren nach einem der Ansprüche 1 bis 7, ferner den Schritt des Bereitstellens einer zweiten Art eines Verdickungsmittels für das Mischgefäß nach dem Betätigen des Hochgeschwindigkeitsdispergierers (A) und/oder während des Betätigens des Rotor-Stator-Mischers (B) umfassend.
  9. Verfahren nach Anspruch 8, wobei die zweite Art des Verdickungsmittels pyrogenes Siliciumdixid oder Sepiolit ist.
  10. Verfahren nach einem der Ansprüche 1 bis 9, durchgeführt bei einer Temperatur zwischen etwa 15 °C und 50 °C.
  11. Verfahren nach einem der Ansprüche 1 bis 6, wobei die Menge des Granulats, das zu dem Mischgefäß hinzugegeben wird, derart ist, dass der Feststoffgehalt der Dispersion, die das flüssige Medium und das Granulat umfasst, im Bereich zwischen etwa 20 Gewichts-% und 70 Gewichts-% liegt.
  12. Verfahren nach einem der Ansprüche 1 bis 11, wobei die Zeitspanne des Betätigens des Hochgeschwindigkeitsdispergierers (A) im Bereich von etwa 5 bis 60 Minuten liegt.
  13. Verfahren nach einem der Ansprüche 1 bis 12, wobei die Zeitspanne des Betätigens des Rotor-Stator-Mischers (B) im Bereich von etwa 10 bis 60 Minuten liegt.
EP16188026.5A 2016-09-09 2016-09-09 Verfahren zur starken reduzierung der grösse von granulatmaterial Active EP3292913B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ES16188026T ES2990080T3 (es) 2016-09-09 2016-09-09 Método para reducir fuertemente el tamaño de los materiales granulares
EP16188026.5A EP3292913B1 (de) 2016-09-09 2016-09-09 Verfahren zur starken reduzierung der grösse von granulatmaterial
PCT/EP2017/072597 WO2018046669A1 (en) 2016-09-09 2017-09-08 Method for strongly reducing the size of granular materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16188026.5A EP3292913B1 (de) 2016-09-09 2016-09-09 Verfahren zur starken reduzierung der grösse von granulatmaterial

Publications (2)

Publication Number Publication Date
EP3292913A1 EP3292913A1 (de) 2018-03-14
EP3292913B1 true EP3292913B1 (de) 2024-07-10

Family

ID=57103779

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16188026.5A Active EP3292913B1 (de) 2016-09-09 2016-09-09 Verfahren zur starken reduzierung der grösse von granulatmaterial

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EP (1) EP3292913B1 (de)
ES (1) ES2990080T3 (de)
WO (1) WO2018046669A1 (de)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10204471C1 (de) * 2002-02-05 2003-07-03 Degussa Wässerige Dispersion enthaltend mit Ceroxid umhülltes Siliciumdioxidpulver, Verfahren zu deren Herstellung und Verwendung
US8070895B2 (en) * 2007-02-12 2011-12-06 United States Gypsum Company Water resistant cementitious article and method for preparing same
US8034972B2 (en) * 2007-06-27 2011-10-11 H R D Corporation System and process for production of toluene diisocyanate
GB201118633D0 (en) 2011-10-28 2011-12-07 Fr Master Bvba Ammonium phosphate aqueous systems suitable for use as flame retardant additives

Also Published As

Publication number Publication date
ES2990080T3 (es) 2024-11-28
WO2018046669A1 (en) 2018-03-15
EP3292913A1 (de) 2018-03-14

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