EP3292913B1 - Procede de forte reduction de la taille de materiau en granules - Google Patents

Procede de forte reduction de la taille de materiau en granules 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
German (de)
English (en)
Other versions
EP3292913A1 (fr
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/fr
Priority to PCT/EP2017/072597 priority patent/WO2018046669A1/fr
Publication of EP3292913A1 publication Critical patent/EP3292913A1/fr
Application granted granted Critical
Publication of EP3292913B1 publication Critical patent/EP3292913B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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. Procédé de réduction de la taille moyenne de particule d'un matériau granulaire par un facteur d'au moins 20, ledit procédé comprenant les étapes de :
    - fourniture d'un récipient de mélange équipé de (A) un disperseur à grande vitesse présentant un disque de mélange et (B) un mélangeur à stator de rotor,
    - fourniture d'un milieu liquide au récipient de mélange, ledit milieu liquide inclut, dissous ou en suspension dans celui-ci, un produit chimique d'aide au broyage choisi dans le groupe constitué du sable, de la poudre de silicate, de l'acide phosphorique, de l'acide sulfurique, de l'acide nitrique et autres acides forts ou faibles ;
    - commutation sur le disperseur à grande vitesse (A) à une vitesse circonférentielle du disque de mélange se situant dans une plage de 1 à 50 m/s,
    - ajout au récipient de mélange d'un matériau granulaire présentant une taille moyenne de particule se situant dans une plage de 1 à 5 mm, ledit matériau granulaire minéral étant compatible avec le milieu liquide,
    - actionnement du disperseur à grande vitesse (A) pendant une période de temps suffisante pour réduire la taille moyenne du matériau granulaire par un facteur d'au moins 10, produisant ainsi des granulés d'une taille moyenne intermédiaire se situant dans une plage de 0,1 à 0,5 mm,
    - commutation sur le mélangeur (B) à stator de rotor et actionnement dudit mélangeur à stator de rotor pendant une période de temps suffisante pour réduire la taille moyenne des granulés intermédiaires par un facteur d'au moins 2, produisant ainsi de fines particules présentant une taille moyenne se situant dans une plage de 0,001 à 50 µm.
  2. Procédé selon la revendication 1, dans lequel le matériau granulaire est choisi dans le groupe constitué de phosphates, sulfates, borates, hydrates, zéolites, hypophosphites, carbonates alcalino-terreux, et oxydes et hydroxydes alcalino-terreux.
  3. Procédé selon la revendication 1 ou la revendication 2, dans lequel le mélangeur (B) à stator de rotor est soit un mélangeur (B1) à stator de rotor de type discontinu interne soit un mélangeur (B2) à stator de rotor en ligne relié de manière externe au récipient de mélange (A).
  4. Procédé selon l'une quelconque des revendications 1 à 3, dans lequel le disperseur à grande vitesse (A) est l'un du type d'un disperseur à grande vitesse à arbre unique présentant un disque fermé ou ouvert et présentant au moins un ensemble de dents au niveau du bord dudit disque.
  5. Procédé selon l'une quelconque des revendications 1 à 4, dans lequel le milieu liquide fourni au récipient de mélange est choisi dans le groupe constitué de :
    - mono-éthanolamine (MEA), di-éthanolamine (DEA), tri-éthanolamine (TEA),
    - eau facultativement mélangée avec de l'ammoniaque,
    - bis(diphényl phosphate) de résorcinol, et autres plastifiants à base de phosphate, et
    - mélanges de ceux-ci dans toutes proportions appropriées.
  6. Procédé selon l'une quelconque des revendications 1 à 5, comprenant en outre l'étape de fourniture au récipient de mélange d'un agent épaississant d'un premier type avant, ou simultanément avec, la fourniture du milieu liquide au récipient de mélange.
  7. Procédé selon la revendication 6, dans lequel l'agent épaississant du premier type est de la gomme xanthane ou de la carboxyméthylcellulose.
  8. Procédé selon l'une quelconque des revendications 1 à 7, comprenant en outre l'étape de fourniture au récipient de mélange d'un agent épaississant d'un second type après l'actionnement du distributeur à grande vitesse (A) et/ou pendant l'actionnement du mélangeur (B) à stator de rotor.
  9. Procédé selon la revendication 8, dans lequel l'agent épaississant du second type est de la silice sublimée ou de la sépiolite.
  10. Procédé selon l'une quelconque des revendications 1 à 9, étant effectué à une température entre environ 15 °C et 50 °C.
  11. Procédé selon l'une quelconque des revendications 1 à 6, dans lequel la quantité de matériau granulaire ajoutée au récipient de mélange est telle que la teneur en matières solides de la dispersion comprenant le milieu liquide et le matériau granulaire se situe dans une plage entre environ 20 % et 70 % en poids.
  12. Procédé selon l'une quelconque des revendications 1 à 11, dans lequel la période de temps d'actionnement du disperseur à grande vitesse (A) se situe dans une plage d'environ 5 à 60 minutes.
  13. Procédé selon l'une quelconque des revendications 1 à 12, dans lequel la période de temps d'actionnement du mélangeur (B) à stator de rotor se situe dans une plage d'environ 10 à 60 minutes.
EP16188026.5A 2016-09-09 2016-09-09 Procede de forte reduction de la taille de materiau en granules Active EP3292913B1 (fr)

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 (fr) 2016-09-09 2016-09-09 Procede de forte reduction de la taille de materiau en granules
PCT/EP2017/072597 WO2018046669A1 (fr) 2016-09-09 2017-09-08 Procédé pour réduire fortement la dimension de matériaux granulaires

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16188026.5A EP3292913B1 (fr) 2016-09-09 2016-09-09 Procede de forte reduction de la taille de materiau en granules

Publications (2)

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

Family

ID=57103779

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16188026.5A Active EP3292913B1 (fr) 2016-09-09 2016-09-09 Procede de forte reduction de la taille de materiau en granules

Country Status (3)

Country Link
EP (1) EP3292913B1 (fr)
ES (1) ES2990080T3 (fr)
WO (1) WO2018046669A1 (fr)

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 (fr) 2018-03-15
EP3292913A1 (fr) 2018-03-14

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