EP0348262B1 - Procédé de broyage fin de minéraux et broyeur à cylindres perfectionné pour la mise en oeuvre de ce procédé - Google Patents

Procédé de broyage fin de minéraux et broyeur à cylindres perfectionné pour la mise en oeuvre de ce procédé Download PDF

Info

Publication number
EP0348262B1
EP0348262B1 EP19890401594 EP89401594A EP0348262B1 EP 0348262 B1 EP0348262 B1 EP 0348262B1 EP 19890401594 EP19890401594 EP 19890401594 EP 89401594 A EP89401594 A EP 89401594A EP 0348262 B1 EP0348262 B1 EP 0348262B1
Authority
EP
European Patent Office
Prior art keywords
rolls
transducer
ground
cylinders
grinding mill
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 - Lifetime
Application number
EP19890401594
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0348262A1 (fr
Inventor
Alain Chielens
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.)
F C B
Original Assignee
F C B
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9367689&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0348262(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by F C B filed Critical F C B
Publication of EP0348262A1 publication Critical patent/EP0348262A1/fr
Application granted granted Critical
Publication of EP0348262B1 publication Critical patent/EP0348262B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/02—Crushing or disintegrating by roller mills with two or more rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C19/00—Other disintegrating devices or methods
    • B02C19/16—Mills provided with vibrators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/10—Crushing or disintegrating by roller mills with a roller co-operating with a stationary member
    • B02C4/18—Crushing or disintegrating by roller mills with a roller co-operating with a stationary member in the form of a bar

Definitions

  • the present invention relates to a process of fine grinding of minerals consisting in subjecting a layer of the product to be ground to a compression between two cylinders with parallel axes, rotating in opposite directions and elastically pushed towards one another.
  • said to be forced feed said to be forced feed, the spacing of the cylinders is adjusted to a low value and the mill is fed with a flow rate equal to several times the theoretical flow rate corresponding to this spacing.
  • the material thus forced between the cylinders causes their displacement at the cost of an overload of the pressure of the springs the greater the greater the flow of material.
  • the present invention provides another solution to this problem. It consists in subjecting the ground material to vibrations at low or medium frequency at its exit from the cylinders, in an area located as close as possible to the imaginary plane containing the axes of the cylinders.
  • the vibration frequency will be between 1 Hz and 1000 Hz.
  • These vibrations can be applied to the ground material by means of a transducer constituted, for example, by a bar with a triangular section, solid or hollowed out and in the latter case with contours. closed or not, placed between the cylinders with one of its edges situated as close as possible to the imaginary plane containing the axes of the cylinders and subjected to longitudinal and / or transverse vibrations by known means.
  • the vibrations could be applied by means of a roller of small diameter, with an axis parallel to the axes of the cylinders, and placed between the cylinders below the plane of the axes of the cylinders. Sufficient space will be provided between the transducer and at least one of the cylinders to allow the evacuation of the ground products.
  • This crusher consists essentially of two identical cylinders 10 and 12, with horizontal and parallel axes, elastically pushed towards one another by springs or by means of a hydro-pneumatic system. Both cylinders are rotated at the same speed and in opposite directions, as indicated by the arrows.
  • a bar 14 of triangular section arranged with one of its edges upward and symmetrically with respect to the plane of symmetry of the cylinders.
  • This bar is supported at its ends by elastic means or slides and is connected to a vibration generator 16, electromagnetic, unbalanced or of any other type, which makes it vibrate longitudinally and / or transversely.
  • Adjustment means are provided to adjust the position of the bar relative to the cylinders, in particular to compensate for wear, and maintain a predetermined clearance between the bar and the cylinders.
  • an instantaneous erasure device for the bar which can be a known device with springs, counterweight, hydraulic or other means, is provided to allow the passage of overwhelming elements.
  • the bearings of one of the cylinders are fixed and the bearings of the other cylinder are mounted on slides or pivoting arms to allow it to approach and move away from the first cylinder.
  • the mobile bearings are held in abutment by the elastic thrust means so as to maintain a minimum spacing between the cylinders.
  • the material to be ground is loaded above the cylinders in a chute supply 18, and the feed rate is significantly greater than the rate corresponding to the minimum spacing, fixed by the stops, so that the cylinders are maintained at a greater spacing by the layer of material which forms between them.
  • the grinding is carried out not only by crushing, under the action of the pressure exerted by the cylinders, but also by attrition between the particles, so that a high proportion of fine particles is formed.
  • the vibrations applied by the bar 14 to the layer of ground material causes the destruction of possible agglomerates in the ground product.
  • the frequency of the vibrations is chosen according to the nature of the materials to be ground and will be between 1 and 1000 Hertz.
  • the ground material is discharged through the slots provided between the cylinders and the bar, on either side of the latter.
  • the bar could be arranged asymmetrically very close to one of the cylinders, the crushed materials then being discharged through the slot made between the bar and the other cylinder.
  • the bar could possibly be replaced by a small diameter roller placed asymmetrically near one of the cylinders with its axis parallel to those of the cylinders.
  • the device for vibrating the bar may be provided with adjustment means making it possible to maintain the amplitude of the vibrations at a value sufficient to create the energy necessary to obtain the desired result: absence of agglomerates in the product leaving the mill.
  • this device is constituted by an electromagnetic vibrator, the frequency can be controlled by the amplitude so as to maintain the level of amplitude whatever the added mass of ground particles supported instantaneously by the bar.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
EP19890401594 1988-06-24 1989-06-08 Procédé de broyage fin de minéraux et broyeur à cylindres perfectionné pour la mise en oeuvre de ce procédé Expired - Lifetime EP0348262B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8808519 1988-06-24
FR8808519A FR2633197B1 (fr) 1988-06-24 1988-06-24 Procede de broyage fin de mineraux et broyeur a cylindres perfectionne pour la mise en oeuvre de ce procede

Publications (2)

Publication Number Publication Date
EP0348262A1 EP0348262A1 (fr) 1989-12-27
EP0348262B1 true EP0348262B1 (fr) 1992-04-29

Family

ID=9367689

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890401594 Expired - Lifetime EP0348262B1 (fr) 1988-06-24 1989-06-08 Procédé de broyage fin de minéraux et broyeur à cylindres perfectionné pour la mise en oeuvre de ce procédé

Country Status (4)

Country Link
EP (1) EP0348262B1 (enrdf_load_stackoverflow)
ES (1) ES2030986T3 (enrdf_load_stackoverflow)
FR (1) FR2633197B1 (enrdf_load_stackoverflow)
GR (1) GR3004777T3 (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104056682A (zh) * 2014-06-06 2014-09-24 陈晨 辊板磨矿机

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1396711A (en) * 1921-08-15 1921-11-08 Johnston George Apparatus for pulverizing ore and the like
GB688165A (en) * 1949-12-30 1953-02-25 Miag Vertriebs Gmbh Improvements in or relating to comminuting devices in roller mills
DE3433577A1 (de) * 1984-09-13 1986-03-13 Hazemag Dr. E. Andreas GmbH & Co, 4400 Münster Walzenmuehle

Also Published As

Publication number Publication date
FR2633197B1 (fr) 1992-07-24
GR3004777T3 (enrdf_load_stackoverflow) 1993-04-28
EP0348262A1 (fr) 1989-12-27
ES2030986T3 (es) 1992-11-16
FR2633197A1 (fr) 1989-12-29

Similar Documents

Publication Publication Date Title
EP0642387B1 (fr) Broyeur vibrant a cone et procede de reglage de la marche d'un tel broyeur
FR2616359A1 (fr) Procede et installation pour le broyage continu par compression de materiaux cassants
EP0348262B1 (fr) Procédé de broyage fin de minéraux et broyeur à cylindres perfectionné pour la mise en oeuvre de ce procédé
FR2541135A1 (fr) Procede et broyeur a cylindres pour la fragmentation continue par pression d'une matiere a broyer fragile
EP3224159B1 (fr) Dispositif de transfert de poudre a ecoulement ameliore
EP0308350B1 (fr) Procédé de broyage fin de minéraux et broyeur pour la mise en oeuvre de ce procédé
EP0489633B1 (fr) Procédé de broyage de matières cassantes comportant pour la mise en oeuvre du procédé une désagglomération sélective et installation
CA2285654C (fr) Perfectionnements aux broyeurs a piste annulaire et rouleau
CA2279833C (fr) Procede et installation pour reduire un materiau brut en morceaux en un materiau en grains selon une distribution granulometrique
FR2527054A1 (fr) Procede et dispositif d'alimentation pour hachoirs a tabac
JPH08309213A (ja) ロール機
RU2036724C1 (ru) Способ измельчения сыпучего кускового материала и устройство для его осуществления
JPH0418937A (ja) 砕石の粒形改善方法とその装置
FR2948885A1 (fr) Dispositif compact de cisaillage ou dechiquetage et de broyage de produits a broyer
FR2670134A1 (fr) Procede de broyage de matieres minerales.
FR2473276A1 (fr) Procede et mecanisme d'alimentation pour hachoirs a tabac
FR2705909A1 (fr) Procédé et dispositif de broyage par vibration.
FR2660579A1 (fr) Procede de broyage de matieres premieres solides, tels que des minerais.
FR2689035A1 (fr) Procédé de concassage et/ou broyage de matériaux avec un dispositif à effets vibratoires, et la machine mettant en Óoeuvre le procédé.
FR2697175A1 (fr) Procédé de concassage et/ou broyage de matériaux avec un dispositif à effets vibratoires et la machine mettant en Óoeuvre le procédé.
EP0094307A2 (fr) Perfectionnements aux broyeurs à jets
USRE25965E (en) Apparatus for delaminating laminar minerals
FR2648366A2 (fr) Procede de broyage fin de mineraux et broyeur pour la mise en oeuvre de ce procede
EP0760713A1 (fr) Dispositif et procede de separation et de qualification de particules formant un produit granuleux
WO2018154189A1 (fr) Procédé de contrôle d'une machine de broyage à cône

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE CH ES GR IT LI

17P Request for examination filed

Effective date: 19900327

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: F C B

17Q First examination report despatched

Effective date: 19910913

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE CH ES GR IT LI

ITF It: translation for a ep patent filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 19920525

Year of fee payment: 4

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GR

Payment date: 19920529

Year of fee payment: 4

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19920605

Year of fee payment: 4

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19920609

Year of fee payment: 4

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2030986

Country of ref document: ES

Kind code of ref document: T3

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

REG Reference to a national code

Ref country code: GR

Ref legal event code: FG4A

Free format text: 3004777

26 Opposition filed

Opponent name: KRUPP POLYSIUS AG

Effective date: 19930114

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19930609

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19930630

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19930630

Ref country code: BE

Effective date: 19930630

BERE Be: lapsed

Effective date: 19930630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19931231

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

RDAG Patent revoked

Free format text: ORIGINAL CODE: 0009271

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: PATENT REVOKED

27W Patent revoked

Effective date: 19940704

REG Reference to a national code

Ref country code: GR

Ref legal event code: MM2A

Free format text: 3004777