BE485440A - - Google Patents

Info

Publication number
BE485440A
BE485440A BE485440DA BE485440A BE 485440 A BE485440 A BE 485440A BE 485440D A BE485440D A BE 485440DA BE 485440 A BE485440 A BE 485440A
Authority
BE
Belgium
Prior art keywords
grinding wheel
support
treated
grinding
polythene
Prior art date
Application number
Other languages
French (fr)
Publication of BE485440A publication Critical patent/BE485440A/fr

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B13/00Conditioning or physical treatment of the material to be shaped
    • B29B13/10Conditioning or physical treatment of the material to be shaped by grinding, e.g. by triturating; by sieving; by filtering
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Disintegrating Or Milling (AREA)

Description

       

   <Desc/Clms Page number 1> 
 
 EMI1.1 
 



  Société dite : SOCIETE NOUVELLE DE dTALLI8ATlpN 
 EMI1.2 
 Pour certaine emploia lnaaatziele, notamment pour la projeo tion à l'aida de pistolet$ ob4lumeaux pulvériaateura, pour l'ol tention de revîtemente de matières plastiques, il mat ndo4seair d'obtenir don poudrea d'une, fine granuloindtzie  Certaines feuil lea de matièrea plantiqut4, leu polythènea notamment, résistent énergiquement à tous lea pzocécide oonnua de broyage ou de marte loge;

   la plasticité marne de la matière qui l'allonge moue la pr aion ou ae ramollit aoua l'action de la oballur créée par des ohooa successifs, ou l'électrisation dea particules Bey oppoaaD même ai l'on a recoure à dea abaiaaementa Importante de la temp rature, à l'aida de l'air comprime ou de la neige carbonique pa 
 EMI1.3 
 exemple, 

 <Desc/Clms Page number 2> 

 
Les procédés de réduction à l'état pulvérulent par   moulag'   semblaient à priori ne   pae   pouvoir donner de   résultats.   car le moulage aux vitesses usuellement employées développe habituels ment une chaleur intense dont on pourrait oraindre qu'elle ne un obstacle à l'obtention de poudres  fines.   



   Or l'expérience a permis de faire cette constatation   sur@   nante que ai l'on a soin de maintenir la vitesse à une valeur suffisamment faible, il est possible de réaliser une granulomét d'une finesse correspondant aux besoins, réchauffement, à ces blea vitesses n'étant pas notable, et pouvant d'ailleurs être c battu par des procédés accessoires tels que la projection d'air froid ou tout autre moyen analogue, 
La présente invention a pour objet, en conséquence, un pr cédé pour l'obtention de l'état de poudres fines des matières plastiques telles que notaient le polythène et la nylon,   cargo   risé par le fait que la matière traitée,

   prise de préférence so forme de   masses   platea et allongées   eat   limée sur la surface d'une meule tournant à une vitesse telle que la vitesse linéair dans la zone de meulage, soit comprise entre 600 et 1000 mètres minute environ. La pression avec laquelle la masse de matière plastique est appliquée contre la meule eat comprise entre 0,50 et 2,50 grammespar millimètre carré, Au-dessous le meulage est insuffisant; au-dessus le dégagement de chaleur est trop oonsid rable, 
C'est ainsi que de bons résultats ont été obtenus pour du polythène avec une vitesse linéaire de 800 mètres par Minute et une pression d'appui de 1,25 gramme par   mm2.   



   De préférence, la meule eat choisie de grain assez gros   m   il semble résulter des essais opérés par l'inventeur que la   gro@   saur du grain de la meule, si elle est suffisante n'a pas une i fluence considérable sur la bonne marche de l'opération mais se, lement sur la dimension des grains de la poudre obtenue. 

 <Desc/Clms Page number 3> 

 titre d'exemple et pour faciliter l'intelligence de la description, on e représenté au destin annexé : 
Figure 1, la vue en élévation d'une machine servent à la mine en oeuvre de l'invention: 
Figure 2, le vue en élévation latérale correspondants, 
Sur le bras 2 d'un touret de forme appropriée cet fixée meule 2; celle-ci   eat   entourée d'un capot étanche1   oonatruit   er forme de   silo   4.

   On peut soit récupérer la poudre à la partie in   férieure,   aoit y adjoindre un   aspirateur,   non figuré eu dessin e un tamis obtenant ainsi directement la poudre de la   granulométri   choisie. Le pain de matière à traiter 5 eat plaoé sur un chemin guidage 6. Un dispositif constitué par une plaquette 9 reliée à contrepoids 10 par des   gaieté   de renvoi 7 et 8 pousse régulières le pain vera la face de la meule.



   <Desc / Clms Page number 1>
 
 EMI1.1
 



  Company known as: SOCIETE NOUVELLE DE dTALLI8ATlpN
 EMI1.2
 For certain employa lnaaatziele, in particular for the projection with the aid of spray gun $ ob4lumeaux pulveriaateura, for the ol tention of plastics coating, it mat ndo4seair to obtain a powder of a, fine granuloindtzie Certain sheets of materialea plantiqut4, leu polythene in particular, vigorously resist all pzocecide oonnua of crushing or of marte lodge;

   the marl plasticity of the material which elongates it frowns the pr aion or softens aoua the action of the oballur created by successive ohooa, or the electrification of the particles Bey oppoaaD even if we have resorted to dea abaiaaementa Important temperature, with the help of compressed air or dry ice
 EMI1.3
 example,

 <Desc / Clms Page number 2>

 
The methods of reduction in the pulverulent state by molding did not seem a priori to be able to give results. because the molding at the speeds usually employed usually develops intense heat which could be ordered as an obstacle to obtaining fine powders.



   However, experience has made it possible to make this surprising observation that we are careful to maintain the speed at a sufficiently low value, it is possible to achieve a particle size of a fineness corresponding to the needs, heating, to these blea speeds not being appreciable, and can moreover be c beaten by accessory processes such as the projection of cold air or any other similar means,
The present invention therefore relates to a method for obtaining the state of fine powders of plastics such as polythene and nylon, cargo ized by the fact that the treated material,

   preferably taken in the form of flat and elongated masses and filed on the surface of a grinding wheel rotating at a speed such that the linear speed in the grinding zone is between approximately 600 and 1000 meters per minute. The pressure with which the mass of plastic material is applied against the grinding wheel is between 0.50 and 2.50 grams per square millimeter, below the grinding is insufficient; above, the release of heat is too great,
Thus, good results have been obtained for polythene with a linear speed of 800 meters per minute and a contact pressure of 1.25 grams per mm 2.



   Preferably, the grinding wheel is chosen of sufficiently coarse grain but it seems to result from the tests carried out by the inventor that the size of the grain of the grinding wheel, if it is sufficient, does not have a considerable influence on the correct operation of the wheel. the operation but is based on the grain size of the powder obtained.

 <Desc / Clms Page number 3>

 by way of example and to facilitate the understanding of the description, we represent in the appended destiny:
Figure 1, the elevational view of a machine used in the mine implementation of the invention:
Figure 2, the corresponding side elevational view,
On the arm 2 of a grinder of appropriate shape this fixed grinding wheel 2; this is surrounded by a watertight cover1 oonatruit and silo shape 4.

   We can either recover the powder at the lower part, aoit add a vacuum cleaner, not shown in the drawing e a sieve thus directly obtaining the powder of the chosen particle size. The bread of material to be treated 5 is placed on a guide path 6. A device consisting of a plate 9 connected to counterweight 10 by return gaiety 7 and 8 regularly pushes the bread towards the face of the grinding wheel.


    

Claims (1)

RESUME L'invention a pour objet : 1 /- Un procédé pour l'obtention à l'état de poudre fine de matières plastiques, tellea que le polythène et le nylon, sé par le fa it que la matière traitée est limée par moulage, la @ toast de la meule étant telle que la vitesse linéaire dans la son d'appui aoit oompriae entre 600 et 1000 mètre% par minute environ et la pression d'appui entre 0,50 et 2,50 gramme. au millimètre carré. SUMMARY The subject of the invention is: 1 / - A process for obtaining the state of fine powder of plastics, such as polythene and nylon, seized by the fact that the treated material is filed by molding, the @ toast of the grinding wheel being such that the linear velocity in the sound of support is oompriae between 600 and 1000 meters% per minute approximately and the pressure of support between 0.50 and 2.50 grams. to the square millimeter. On peut aussi assurer refroidir la matière en ooure de meula- ge, par exemple par insufflation d'air comprimé. It is also possible to ensure that the material being milled is cooled, for example by blowing in compressed air. 2 /- Un appareil à meuler pour la réalisation de oe procéd@ comportant un chemin de guidage de la matière traitée contre la meule et un système à contrefoids et poulies de renvoi pour appli- quer ladite matière contre la meule. 2 / - A grinding apparatus for the production of a proced @ comprising a guide path for the material treated against the grinding wheel and a system of counterfoids and return pulleys for applying said material against the grinding wheel.
BE485440D BE485440A (en)

Publications (1)

Publication Number Publication Date
BE485440A true BE485440A (en)

Family

ID=131358

Family Applications (1)

Application Number Title Priority Date Filing Date
BE485440D BE485440A (en)

Country Status (1)

Country Link
BE (1) BE485440A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0508042A1 (en) * 1991-03-13 1992-10-14 ASAOKA Co., Ltd. Method and apparatus for pulverizing difficult to crush plastic materials

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0508042A1 (en) * 1991-03-13 1992-10-14 ASAOKA Co., Ltd. Method and apparatus for pulverizing difficult to crush plastic materials

Similar Documents

Publication Publication Date Title
US20150367350A1 (en) Granules conditioner
US4709864A (en) Method and apparatus for the crushing of material
BE485440A (en)
RU2006121169A (en) METHOD FOR GRANULATING PROCESSED FOOD PRODUCT OF LOW HUMIDITY AND HIGH FAT AND ITS RE-USE
US20130193245A1 (en) Apparatus and method for producing crumb rubber
US2512523A (en) Centrifugal impeller mill with rotating target
US4130901A (en) Plastication arrangement in a machine for processing polymeric materials
KR101289776B1 (en) The production equipment of powder material with low tensile strength from the waste tire rubber
KR840005050A (en) Crushing material transfer and treatment device
EP0140613A3 (en) Apparatus for and method of obtaining a comminuted product from a solid feed material
US3263980A (en) Apparatus for treating thermoplastic material to improve flowability thereof
JPH0214088A (en) Control valve for regenerating fiber of paper waste
US979186A (en) Machine for facilitating the separation of garlic from wheat.
US234122A (en) Germ-detacher for roller-mills
CN209999529U (en) pure device of plastic powder
RU2765648C1 (en) Method for cleaning solid cryogenic matter particles and a device for its implementation
JPH07185375A (en) Method for pulverizing low melting resin
US973811A (en) Grinding-mill.
SU239534A1 (en) INSTALLATION FOR GETTING GRANULES
US20210388249A1 (en) Abrasive powders in soft matrices
US543202A (en) washbuen
US657398A (en) Apparatus for preparing and feeding fuel.
RU2069096C1 (en) Bulk material grinding apparatus
US583008A (en) Apparatus for grinding ores or other substances
NL1019690C2 (en) Cryogenic grinder for carbon dioxide particles, has grinding mechanism formed by nip between two ribbed rolls