EP1009533B1 - Procede et installation pour reduire un materiau brut en morceaux en un materiau en grains selon une distribution granulometrique - Google Patents

Procede et installation pour reduire un materiau brut en morceaux en un materiau en grains selon une distribution granulometrique Download PDF

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Publication number
EP1009533B1
EP1009533B1 EP98908186A EP98908186A EP1009533B1 EP 1009533 B1 EP1009533 B1 EP 1009533B1 EP 98908186 A EP98908186 A EP 98908186A EP 98908186 A EP98908186 A EP 98908186A EP 1009533 B1 EP1009533 B1 EP 1009533B1
Authority
EP
European Patent Office
Prior art keywords
lumps
fractions
grain
grains
size
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
EP98908186A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1009533A1 (fr
Inventor
André Pinoncely
Jean-François PICHON
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.)
FCB Aluminium
Original Assignee
FCB Aluminium
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Filing date
Publication date
Application filed by FCB Aluminium filed Critical FCB Aluminium
Publication of EP1009533A1 publication Critical patent/EP1009533A1/fr
Application granted granted Critical
Publication of EP1009533B1 publication Critical patent/EP1009533B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C21/00—Disintegrating plant with or without drying of the material
    • 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

Definitions

  • the present invention relates to a method and an installation, especially with continuous operation, to reduce a raw material into pieces and obtain a grain material with a required particle size distribution as well that an application of the mixture of granular material obtained by setting work of such a process.
  • a characteristic generally prevailing in the definition of this granulometric zone is the aptitude of fine grains to fill the most exactly possible the intergranular spaces of the size grains superior, this characteristic contributing to an optimization of the compactness of the workpiece, to a reduction in the consumption of any binder to fill the gaps, as well as better performance in terms of mechanical resistance and / or electrical or thermal conductivity.
  • Another feature often sought after for fractions coarse of this size range is to present resistance optimal for compression, so as not to be degraded during subsequent work and to reinforce the mechanical characteristics of the part worked after forming.
  • the first step is to divide the material into several grain size fractions using classification devices, to reduce possible surpluses of certain fractions by means of crushing or grinding, to recirculate the fragmented products on the classification apparatus, and for storing the various fractions thus produced in silos or hoppers buffers according to their granulometry.
  • the second step then consists in reconstituting a mixture different particle size fractions produced in the first step, in order to satisfy the required size zone, thanks to an extraction controlled materials under each silo by means of volumetric and / or weight dosing.
  • the object of the invention is to propose a method and a installation for particle size reduction of a raw material into pieces in one grain material which overcomes the aforementioned drawbacks and allows the direct, especially continuous, production of a particle size distribution required without recirculation, without classification or remixing of all or part fragmented products.
  • Another object of the present invention is to provide a process and installation for particle size reduction of a raw material into pieces which allow direct use of the grain material obtained without having to modify its particle size distribution again according to the desired application.
  • Another object of the present invention is to provide a application of the mixture of grain material obtained allowing the manufacture objects having advantageous physical properties.
  • the present invention relates first of all to a method of particle size reduction of a raw material into pieces according to claim 1.
  • the process which is the subject of the invention uses a raw starting product whose pieces have, for example, dimensions less than or equal to 200 mm.
  • crushing by crushing in a layer of material designates the grinding processes according to which a multigranular layer of product to be ground is compressed between two surfaces with pressure sufficient to cause fragmentation of grains which are reduced to grains smaller.
  • the compressive force exerted is transmitted within the layer of grain to grain material through grain contact zones.
  • the coarse grain size of the matter makes the intergranular spaces generally large, and that the contact surfaces between grains are limited, which generates a significant pressure and causes the most fragile grains to burst.
  • the grains of smaller size thus generated then rearrange themselves in the spaces vacant intergranulars, gradually increasing contact surfaces between grains, and simultaneously reducing the local pressure in the areas of contact.
  • the process therefore contributes to reducing the volume intergranular voids by correlatively increasing the compactness of the layer of material, until the multiplication of the points of contact between grains lowers local pressures below the rupture threshold by overwriting of these.
  • the active parts of the mill for the reduction may have little contact with the material. In effect, it grinds by itself under the effect of the pressure transmitted between the grains. It is therefore possible to treat abrasive materials by limiting the wear of the parts used.
  • the latter will depend, in particular, on the pressure of subsequent use of the material and will be greater than or at least equal to it to avoid grain deterioration in this step.
  • Apparatus known for the implementation of grinding by crushing in a layer of material are, for example, grinding mills, vertical ball or roller mills, ring mills, presses with cylinders and vibrating cone crushers.
  • a vertical cone crusher vibrating i.e. a grinder in which the cone or the tank is placed vibration, the other element, tank or cone, of the mill being fixed or mobile.
  • a vertical cone crusher vibrating i.e. a grinder in which the cone or the tank is placed vibration, the other element, tank or cone, of the mill being fixed or mobile.
  • Various examples using some of these mills are developed in the after.
  • the present invention also relates to a installation according to claim 2.
  • the grain material obtained has particle size distributions directly usable, as determined, and the installation according to the invention therefore does not require a product recirculation or division device fragmented.
  • the installation according to the invention thus comprises, advantageously a single crusher by crushing in a layer of material.
  • other preliminary operations notably crushing could also be considered, using other devices provided for in upstream.
  • the installation could be possibly supplemented, upstream of the latter, with a classification which will generally be a screen and / or a grid, allowing to select different fractions of the raw material and, in particular, take from its pieces one or more large fractions missing in the material in grains. These large fractions will then avoid, thanks to a bypass, in all or part of the grinder.
  • these large fractions will consist of grains with dimensions greater than or equal to one millimeter.
  • the present invention advantageously relates to a application of the mixture of grain material obtained by the implementation of the process described above during manufacture, after compacting, pressing and / or compaction by vibration of said mixture, of objects having properties optimized mechanics.
  • the break points between grains during fragmentation may be different depending on the nature and cohesion of the latter, it appears a selective fragmentation primarily affecting the grains fragile.
  • the large grains of the fragmented product are preferably from the hardest constituents of the raw product.
  • the distribution particle size of the ground product has a satisfactory compactness, the vacant intergranular spaces being filled during treatment.
  • the installation according to the invention consists, for example, of a system feed of raw material 1, a grinder 2 and a system of storage 3 and truck loading 5.
  • the crusher 2 is, for example, a vibrating cone crusher of the type described in documents FR-2.702.970 and FR-2.735.402 in the name of applicant.
  • the truck storage and loading system can also be replaced by any other system such as a heaping device on the ground, bagging or other.
  • the crusher 2 can also directly feed a downstream device ensuring possible mixing with a binder and / or setting work of the mixture.
  • the installation can be designed mobile, trailer or self-propelled, for example by assembly on a road or rail chassis.
  • Such an installation can be used, in particular for the production of road material with grain size which can be 0-30 mm.
  • the gross product is previously divided into different fractions particle size, so that, as previously mentioned, some of the the coarsest fractions avoid, thanks to a bypass, in whole or in part the grinding stage and are mixed with the ground material in order to complete the coarse grain content necessary to satisfy the distribution particle size required.
  • the installation the diagram of which is shown in Figure 2 can be considered for example for the manufacture of certain hydraulic concrete.
  • Such an installation comprises, between the supply system 1 and the crusher 2, in particular, a screen 4 with two fabrics or grids which go allow to puncture two coarse fractions G1 and G2 in the material brute.
  • These coarse fractions can be for example a 5-20 mm and a 20-40 mm respectively. They are stored in silos or hoppers 6 and 7.
  • the mill 2 is here, for example, a ring mill of the type described in documents FR-90 / 14.004 and FR-2,679,792.
  • the fragmented material F in particular in 0-10 mm, is taken up by a handling system 3, such as a bucket elevator, to be stored in a silo 5.
  • a handling system 3 such as a bucket elevator
  • An extraction and metering system 9 constituted here for the example of a vibrating extractor, under each silo or hopper 5-7, allows to control the flow of fragmented products extracted, and that of additions correspondents of the two coarse fractions to complete the product fragmented to meet the required size range.
  • the mixture of grains obtained after grinding can also be applied, in particular, to the preparation coke for the manufacture of anodes used in the production of aluminum by electrolysis.
  • the metering system 9 shown under the silos 5 and 6 is by weight, of the weight loss type, as commonly used in conventional installations.
  • the typical particle size of the various flows of material are of the order of 0-30 mm for raw coke, 15-30 mm for the fraction G2, 5-15 mm for fraction G1 and 0-15 mm containing a small quantity greater than 5 mm for the fragmented material F.
  • Figure 4 illustrates a simplified alternative of the example previous based on a simple volumetric assay of the fractions F and G1, when the precision of the weight system is not required.
  • the intermediate silo storage is no longer necessary and the volumetric flow rate of the G1 fraction is regulated as a proportion of the total flow measured on the rocker 11 of the recovery conveyor 12, by acting on the extraction system of the overflow dispenser 13.
  • the latter can be, as shown, a dispenser by variable frequency vibrating extractor.
  • the operating parameters of the shredder 2 are then regulated to ensure online control of the total flow on scale 11.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Disintegrating Or Milling (AREA)
  • Crushing And Grinding (AREA)
  • Cultivation Of Plants (AREA)
  • Fertilizers (AREA)
EP98908186A 1997-02-19 1998-02-13 Procede et installation pour reduire un materiau brut en morceaux en un materiau en grains selon une distribution granulometrique Expired - Lifetime EP1009533B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9702178A FR2759610B1 (fr) 1997-02-19 1997-02-19 Procede et installation pour reduire un materiau brut en morceaux en un materiau en grains selon une distribution granulometrique donnee
FR9702178 1997-02-19
PCT/FR1998/000280 WO1998036841A1 (fr) 1997-02-19 1998-02-13 Procede et installation pour reduire un materiau brut en morceaux en un materiau en grains selon une distribution granulometrique

Publications (2)

Publication Number Publication Date
EP1009533A1 EP1009533A1 (fr) 2000-06-21
EP1009533B1 true EP1009533B1 (fr) 2003-01-22

Family

ID=9504104

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98908186A Expired - Lifetime EP1009533B1 (fr) 1997-02-19 1998-02-13 Procede et installation pour reduire un materiau brut en morceaux en un materiau en grains selon une distribution granulometrique

Country Status (13)

Country Link
US (1) US6481651B1 (no)
EP (1) EP1009533B1 (no)
AR (1) AR011836A1 (no)
AT (1) ATE231415T1 (no)
AU (1) AU736562B2 (no)
BR (1) BR9807423A (no)
CA (1) CA2279833C (no)
DE (1) DE69810939T2 (no)
FR (1) FR2759610B1 (no)
NO (1) NO322318B1 (no)
RU (1) RU2218212C2 (no)
WO (1) WO1998036841A1 (no)
ZA (1) ZA981334B (no)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103263966A (zh) * 2013-06-17 2013-08-28 长兴电子材料（昆山）有限公司 一种粉碎球磨一体机
CN103285993A (zh) * 2013-05-22 2013-09-11 江苏新业重工股份有限公司 一种物料分级装置
CN110302862A (zh) * 2019-07-03 2019-10-08 安徽一诺青春工业设计有限公司 一种泥煤成型装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105597902B (zh) * 2015-12-31 2019-06-07 攀枝花东方钛业有限公司 一种硫酸法钛白粉生产中原材料钛精矿的分级方法

Family Cites Families (19)

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US3003708A (en) * 1960-04-15 1961-10-10 United States Steel Corp Impact crusher
GB1179557A (en) * 1966-10-19 1970-01-28 Diddier Werke Ag Improvement in Permeable Refractory Products
USRE26727E (en) * 1966-10-21 1969-12-02 Separation apparatus
US3514045A (en) * 1967-09-11 1970-05-26 Dravo Corp Apparatus for converting pea gravel into useful aggregate
US3622087A (en) * 1969-10-24 1971-11-23 Dorr Oliver Inc Beneficiation of phosphate rock
US3622089A (en) * 1969-12-04 1971-11-23 Johnson Welding & Equipment Co Crushing plant
US3622083A (en) * 1970-05-18 1971-11-23 Herbert Greenewald Jr Apparatus and methods for processing ceramic mold and core materials
FR2236560A1 (en) * 1973-07-12 1975-02-07 Rosslyn Mitchell Lignite lump grading machine - directs those above given size to reducer and has two reception units
US4116390A (en) * 1975-02-14 1978-09-26 Uhde Gmbh Process for reducing the grain size of phosphate rock
US4418892A (en) * 1982-05-10 1983-12-06 Howell Frank H Aluminum furnace skim recovery system
US4824031A (en) * 1985-01-31 1989-04-25 Microfuel Corporation Means of pneumatic comminution
US4923124A (en) * 1985-01-31 1990-05-08 Microfuel Corporation Method of pneumatic comminution
DE3855619T2 (de) * 1987-04-28 1997-03-06 Nittetsu Mining Co Ltd Walzenbrecher und Brechverfahren mit Anwendung desselben
DE3731934A1 (de) * 1987-09-23 1989-04-13 Kloeckner Humboldt Deutz Ag Zweiwalzenmaschine wie z. b. walzenpresse
DE4338362A1 (de) * 1993-11-10 1995-05-11 Sued Chemie Ag Verfahren zur Herstellung von Sorptionsmitteln auf Smektitbasis zur Aufnahme von Flüssigkeiten
US5375779A (en) * 1993-12-20 1994-12-27 Modern Process Equipment, Inc. Process for grinding limestone to predetermined particle size distribution
US5379948A (en) * 1994-01-06 1995-01-10 American Colloid Company Method for milling clay without substantial generation of powder
DE19504589A1 (de) * 1995-02-11 1996-08-14 Kloeckner Humboldt Deutz Ag Rostkühler
FR2746329B1 (fr) * 1996-03-22 1998-05-22 Fcb Procede et installation pour la production simultanee et en continu de plusieurs fractions granulometriques d'une matiere minerale

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103285993A (zh) * 2013-05-22 2013-09-11 江苏新业重工股份有限公司 一种物料分级装置
CN103263966A (zh) * 2013-06-17 2013-08-28 长兴电子材料（昆山）有限公司 一种粉碎球磨一体机
CN110302862A (zh) * 2019-07-03 2019-10-08 安徽一诺青春工业设计有限公司 一种泥煤成型装置

Also Published As

Publication number Publication date
DE69810939D1 (de) 2003-02-27
FR2759610A1 (fr) 1998-08-21
FR2759610B1 (fr) 1999-04-16
ZA981334B (en) 1998-08-27
CA2279833A1 (fr) 1998-08-27
NO993988L (no) 1999-09-27
CA2279833C (fr) 2005-08-16
ATE231415T1 (de) 2003-02-15
EP1009533A1 (fr) 2000-06-21
RU2218212C2 (ru) 2003-12-10
BR9807423A (pt) 2000-03-21
DE69810939T2 (de) 2003-11-20
WO1998036841A1 (fr) 1998-08-27
NO322318B1 (no) 2006-09-18
NO993988D0 (no) 1999-08-18
AR011836A1 (es) 2000-09-13
US6481651B1 (en) 2002-11-19
AU6627798A (en) 1998-09-09
AU736562B2 (en) 2001-08-02

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