EP2643100A1 - Dispositif et procede d'egouttage-rincage de matieres granulaires solides, riches en particules filiformes (i.e. des cables metalliques) - Google Patents
Dispositif et procede d'egouttage-rincage de matieres granulaires solides, riches en particules filiformes (i.e. des cables metalliques)Info
- Publication number
- EP2643100A1 EP2643100A1 EP11790744.4A EP11790744A EP2643100A1 EP 2643100 A1 EP2643100 A1 EP 2643100A1 EP 11790744 A EP11790744 A EP 11790744A EP 2643100 A1 EP2643100 A1 EP 2643100A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- granular material
- solid granular
- particles
- material rich
- perforated plate
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B13/00—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices
- B07B13/003—Separation of articles by differences in their geometrical form or by difference in their physical properties, e.g. elasticity, compressibility, hardness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
- B03B5/02—Washing granular, powdered or lumpy materials; Wet separating using shaken, pulsated or stirred beds as the principal means of separation
- B03B5/04—Washing granular, powdered or lumpy materials; Wet separating using shaken, pulsated or stirred beds as the principal means of separation on shaking tables
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
- B07B1/469—Perforated sheet-like material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/50—Cleaning
- B07B1/55—Cleaning with fluid jets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B2230/00—Specific aspects relating to the whole B07B subclass
- B07B2230/01—Wet separation
Definitions
- the present invention relates to a device for dewatering and optionally rinsing a solid granular material rich in filiform particles and loaded with fine particles, comprising:
- a first vibrating screen comprising a perforated orifice plate comprising a transverse median and projections directed from the face of said perforated plate receiving said solid granular material rich in filiform particles upwards, said projections being each provided with at least an orifice and said perforated plate having a head portion and a tail portion, said head portion being located below said horizontal plane of said first vibrating screen and said tail portion being located above said horizontal plane of said first vibrating screen,
- solid granular material rich in filiform particles typically in the sense of the present invention a material from a metal waste treatment for the recovery of metals or its concentrate.
- the aforesaid matter is rich in filiform particles such as wire ropes.
- the "solid granular material rich in filiform particles” thus comprises particles having a preferential direction but also corrugated portions and which can thus be wound on themselves or intermesh with each other.
- the solid granular material rich in filiform particles is typically the result of a gravimetric concentration of metal waste in a dense medium. This operation can be performed by means of a conventional screen.
- a screening system is described, for example, in US 2237491 which discloses a screen fed upstream with granular material of different particle sizes. Under the effect of vibration, the finer particles pass through the screen for further processing while the particles having a particle size greater than the size of the orifices remain on the screen and traverse the slope of the screen surface by gravity.
- the orifices are present on projections and face the direction of advancement of the material.
- this type of screen does not allow to obtain a proper screening and one of the major problems encountered is the clogging of canvases or grids by fragments of cables and other materials filiform, the section of which is smaller than the aperture of the orifices of the screen cloth, but whose twisted shape favors their accumulation on these cloths, although the length of the filiform particles is often greater than the size of said orifices.
- DE 19515349 relates to a process for separating solid particles of different sizes and densities in which the vibrating sieve has projections and orifices.
- This screen is inclined relative to the horizontal at an angle of at least 20 ° to ensure proper separation of the different particles.
- such an inclination is not suitable for the treatment of solid granular materials rich filiform particles since such a slope promotes, under the action of gravity, the accumulation of filiform materials at the orifices located at the start of the projections, which ultimately results in the clogging of these openings.
- the invention aims to solve this problem by providing a device for the screening of products from wet metal waste treatment which minimizes the clogging of the orifices of the fabric.
- the invention provides a device for dewatering and optionally rinsing a solid granular material rich in filiform particles and loaded with fine particles, characterized in that said perforated plate of orifices has an inclination ranging from 1 to 10 ° with respect to the horizontal plane passing through said transverse median.
- Such inclination advantageously avoids that, under the effect of gravity, filiform particles accumulate at the orifices located at the start of the projections, which causes the clogging of the latter.
- the screening of the material resulting from a wet metal waste treatment It is intended to separate on the one hand an aqueous phase from a solid phase which comprises solid granular material rich in filiform particles.
- the product resulting from the treatment of wet metal scrap may already comprise an aqueous phase which must be separated from the solid granular material rich in filiform particles and in this case, the solid granular material rich in filiform particles must be drained. and that the solid granular material rich in filiform particles may be optionally rinsed with an aqueous phase fed separately.
- the aqueous phase whether fed or residual wet metal waste treatment or both, carries with it fine particles whose particle size is smaller than the size of the orifices of the screen ( perforated plate).
- said supply of solid granular material rich in filiform particles is at the bottom of the perforated plate at the level of the head portion and the solid granular material rich in filiform particles back the plate up to at the tail portion where it is recovered for further processing.
- the aqueous phase flows by gravity either on the plate or under the plate or both depending on the location of the perforated plate where the aqueous phase passes through the orifices, countercurrently with respect to the rich solid granular material in filiform particles that goes up the screen.
- the vibration of the sieve and the rise of the material distribute the solid granular material rich in filiform particles homogeneously, which reduces the clogging of the orifices, the inclination being arranged to be such that it allows the upward progression of the solid granular material rich in filiform particles, avoiding that it descends under the effect of gravity, and therefore taking into account the the density of solid granular material rich in filiform particles to be treated.
- the granular materials advance on the sheets without the possibility of penetrating into the openings or orifices, by rebounding.
- the liquid flows gravitarily against the direction, giving it the opportunity to rush into the openings and be recovered at the bottom of the vibrating.
- This liquid can carry fine particles smaller than the size of the openings and for which the effects of driving the liquid are greater than the effects of the vibration. This feature allows for washing and rinsing operations while recovering a drained product output vibrating.
- the conventional methods of gravimetric concentration of the metal recovery generally treat a product having a metal particle size spectrum to recover from 10 pm to 300 mm.
- the dewatering and optionally rinsing device comprises a second vibrating screen comprising a perforated orifice plate comprising a transverse median, said perforated plate having an inclination with respect to the horizontal plane passing through. by said transverse median, a head portion and a tail portion, said head portion being located below said horizontal plane of said second vibrating screen and under said tail portion of said first vibrating screen and said tail portion being located above the horizontal plane of said first vibrating screen; and wherein the outlet of said drained filiform particulate rich granular material is connected to said tail portion of said second vibrating screen.
- the device according to the invention has a plurality of vibrating screens arranged in series with respect to the direction of advancement of the solid granular material rich in filiform particles.
- the vibrating screens of said plurality are arranged in series, but in staircase. In this way, the tail portion of the second screen is under the series portion of said first screen.
- the head portion of the second sieve is above the tail portion of the next sieve and so on to the last.
- the size of the openings is chosen according to the size of the particles that can be accepted in the recovered liquid.
- said inclination is chosen in the range from 1 to 5 °.
- the amplitude, the frequency and the direction of vibration are adjusted so as to raise the solids toward the tail end of the vibrator, the aforesaid values being preferential based on the type of metal waste treated. wet.
- the vibrating screen particles having a particle size from 3 mm and for example up to 300 mm, can be drained and optionally rinsed successfully without clogging the orifices.
- the efficiency of the process will be much higher since the losses are decreased.
- each projection provided with at least one of said orifices is in the form of a tile, said at least one of said orifices facing said tail portion.
- the openings of the sheets are obtained by stamping so as to obtain a tile shape. They are preferably staggered and are oriented such that the orifice faces said tail portion of the perforated plate.
- the orifices of the vibrating screen do not face the solid granular material rich in filiform particles that goes up the screen, which prevents sections of cables or son and the like can get stuck and clogged.
- This embodiment particularly preferred substantially reduces to zero the clogging phenomenon of the perforated plate.
- the present invention also relates to a process for draining and optionally rinsing a solid granular material rich in filiform particles and loaded with fine particles, comprising:
- This method is characterized in that said first lift is carried out substantially in an average path inclined at an angle of 1 to 10 ° relative to a horizontal plane.
- the method according to the invention therefore allows, as mentioned above, a dewatering and optionally a rinsing of a solid granular material rich in filiform particles in which the solid granular material rich in filiform particles back the perforated plate towards the tail portion, under the effect of vibration, it is distributed homogeneously which promotes the result draining and possibly rinsing by reducing the clogging of the orifices.
- the granular material rich in filiform particles back said perforated orifice plate which has an inclination ranging from 1 to 10 ° relative to the horizontal plane passing through said transverse median. Such inclination advantageously avoids that, under the effect of gravity, threadlike materials do not accumulate at the orifices facing it on the other side of the projections, which could otherwise lead to the clogging of the latter. .
- the method according to the invention also comprises:
- said second ascent is carried out substantially in a mean trajectory inclined at an angle of 1 to 10 °, preferably 1 to 5 ° relative to a horizontal plane.
- said first ascent is carried out substantially in an average path inclined at an angle of 1 to 5 ° relative to said horizontal.
- said solid granular material rich in filiform particles bounces on the sieve and bypasses protrusions coming out of said perforated plate upwards (from above or from the side).
- said aqueous phase flows at least through orifices present on said projections facing said tail portion.
- said recovered aqueous phase is recycled for reuse in said aqueous phase feed.
- the solid granular material rich in filiform particles is further rinsed with an aqueous phase fed above said first and / or second perforated plate respectively.
- the invention also relates to a use of a device according to the invention for draining a solid granular material rich in filiform particles and optionally rinsing a solid granular material rich in filiform particles.
- Figure 1 is a side view of a device according to the invention.
- FIG. 2 is a sectional view of a projection of a perforated grid according to the invention, itself illustrated in FIG.
- Figure 4 is a perspective view of a preferred device according to the invention.
- FIG. 5 is a perspective view of a variant according to the invention of FIG.
- the device according to the invention comprises a vibrating screen 1 provided with a perforated plate 2.
- the vibrating screen comprises a transverse median X through which passes a horizontal plane.
- the plane of the perforated grid 2 of the vibrating screen 1 has an inclination of an angle ⁇ with respect to the aforesaid horizontal plane, between 1 and 10 °, preferably less than 8.
- the perforated plate 2 has a head portion 3 and a tail portion 4 and, in view of the aforementioned inclination, the head portion 3 is lower than the tail portion 4, and is therefore located under the horizontal plane aforesaid. As a result, the tail portion 4 is located above the aforesaid horizontal plane.
- the device according to the invention comprises a feed of solid granular material rich in filiform particles 5, loaded with fine particles.
- Said solid granular material rich in filiform particles 6 loaded with fine particles is preferably derived from a wet metal waste treatment and therefore comprises an aqueous phase as well.
- the device according to the invention also comprises a series of feeds in an aqueous phase 7 arranged to feed an aqueous phase. for rinsing the solid granular material rich in filiform particles 6 which is on the perforated grid 2 of said vibrating screen.
- the perforated grid is moved under the effect of a motor which gives it an amplitude, a frequency and a direction of vibration arranged to raise the solid granular material rich in filiform particles 6 of the head portion 3 towards the tail portion 4 where it will then be recovered, possibly for further processing
- the aqueous phase originating on the one hand from the solid granular material rich in filiform particles 6 resulting from the treatment of wet metal waste and / or on the other hand from the aqueous phase feeds 7 rinses the solid granular material rich in filiform particles 6 which goes up the vibrating screen 1 to the tail portion 4 and the aqueous phase flows either on the perforated plate 2, or through orifices 9 and then in the trough 13 at the bottom of the vibrating screen. It is then recovered by a suitable device 14 and conveyed to be then treated and / or recycled according to the arrow B of FIG. 1.
- the solid granular material rich in filiform particles 6 thus raises the perforated plate in the average direction A and the phase Aqueous flows countercurrent in the direction B by gravity. It goes without saying that the directions A and B are the resultants of the various trajectories respectively of solid granular material rich in filiform particles 6 and of the aqueous phase since the vibrations and the movement of the sieve cause a turbulent and disturbed movement of the latter.
- the perforated plate 2 of the vibratory screen 1 further comprises 8 stampings obtained by stamping so as to obtain a tile shape, i.e., upward projections 8 having a domed top surface, as can be seen in FIG. see Figure 2, substantially flattened on the top so as to advance the solid granular material rich filiform particles 6 to the portion of tail 4 as homogeneous as possible. Therefore, the upper face of the projection 8 has 2 lateral parts, inclined and curved 10 and 1 1 connected at their apices by a substantially flat face 12. Preferably, the thickness of the upper face of the projection is similar to that perforated plate 2 since the projections are obtained by stamping. Each projection has a longitudinal aperture 9 of about 30 mm in the width direction of the perforated plate or transverse median X, i.e., having about the same width as that of the upper planar surface 12.
- the height of the orifices generally between 200 pm and 3 mm.
- the longitudinal orifice 9 faces the tail portion 4.
- the projections are preferably aligned in the direction of the transverse median X and staggered in the direction of the longitudinal median.
- the orifices 9 of the same row are preferably inscribed in an oblique plane or perpendicular to the plane of the perforated plate 2.
- FIG. 4 illustrates a preferred embodiment of the device according to the invention.
- the illustrated device comprises a first and a second vibrating screen 1, 1 'respectively comprising a first and a second perforated plate 2,2'.
- a device may also include more than two vibrating screens arranged in series and in staircase, for example three.
- each of the three vibrating screens arranged in series, and in staircase comprises two perforated plates arranged end to end in series about 1.7 m wide by 2 m long. This therefore makes it possible to have three vibrating screens in steps, each comprising two perforated sheets, 4 m long and 1.7 m wide for rinsing and / or draining over 12 m long.
- the solid granular material rich in filiform particles is then fed by the feed 5 onto the first perforated plate 2 of the first vibrating screen at the level of the head portion 3.
- the granular material is illustrated as being fed to the head portion 3 of the first vibrating screen 1, this is in no way limiting. Indeed, the solid granular material rich in filiform particles to be drained could also be fed to other places, for example in a more central part.
- the solid granular material rich in filiform particles bounces and rises the first vibrating screen 1 inclined at an angle to the horizontal ⁇ included advantageously between 1 and 5 °).
- the solid granular material rich in filiform particles may be rinsed with an aqueous phase fed by rinsing jets 7 which spray the aqueous phase during its ascent of the first vibrating screen 1.
- rinsing jets 7 which spray the aqueous phase during its ascent of the first vibrating screen 1.
- the second vibrating screen comprises for example a second perforated plate 2 'which is inclined at an angle ⁇ ', which is identical or different with respect to a but preferably between 1 and 5 °.
- the solid granular material rich in filiform particles rebounds and raises the second vibrating screen 2 'where it can be advantageously rinsed by an aqueous phase fed by rinsing jets 7.
- the different rinsing jets 7 can spray the same aqueous phase or phases A different aqueous solution which may be water, an aqueous acidic, basic, detergent or neutralizing solution.
- the head position 3 of the second vibrating screen V is situated under the tail portion 4 of the first vibrating screen 1, in partial overlap so that when the solid granular material rich in filiform particles reaches the tail portion 4, it falls back and return to the second vibrating screen where it is recovered.
- the spacing between the vibrating screens being dimensioned according to the particle size of the granular solid material rich in filiform particles, so that it can turn around a half-turn for optimal rinsing.
- the solid granular material rich in filiform particles is recovered by dropping into a recovery tank 15 for subsequent conditioning or subsequent treatment located beneath the tail portion 4 of the second strainer. vibrant.
- the aqueous phase penetrates the orifices 9 of the projections 8 of the first and second perforated plate 2,2 'and is recovered in the trough 13 below by gravity to then flow into an aqueous phase recovery device 14 against -current in the direction B relative to the solid granular material rich in filiform particles (direction A).
- FIG. 5 is a variant of Figure 4 in which the vibrating screens 1, 1 'comprise a common trough 13.
- the product to be washed shows a strong magnetite contamination on the surface of the metal fragments.
- the product after washing is relatively free of magnetite. 11 leaves the vibrator properly drained without any clogging of the perforated plate was observed.
- the pulp (water-magnetite mixture) obtained at the bottom of the vibrator can be treated and recycled; the water can be reused in the washing and the magnetite can reintegrate the gravimetric separation process in a dense medium.
- the orifices and projections of the grid may have other shapes and sizes than those described here, for example depending on the solid granular material rich in filiform particles to be treated.
Landscapes
- Combined Means For Separation Of Solids (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE2010/0696A BE1019649A5 (fr) | 2010-11-22 | 2010-11-22 | Dispositif et procede de rincage-egouttage de matieres granulaires solides, riches en particules filiformes (ie. des cables metalliques). |
| PCT/EP2011/070665 WO2012069464A1 (fr) | 2010-11-22 | 2011-11-22 | Dispositif et procede d'egouttage-rincage de matieres granulaires solides, riches en particules filiformes (i.e. des cables metalliques) |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2643100A1 true EP2643100A1 (fr) | 2013-10-02 |
| EP2643100B1 EP2643100B1 (fr) | 2015-02-18 |
Family
ID=44278765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP11790744.4A Active EP2643100B1 (fr) | 2010-11-22 | 2011-11-22 | Dispositif et procede d'egouttage-rincage de matieres granulaires solides, riches en particules filiformes (i.e. des cables metalliques) |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP2643100B1 (fr) |
| BE (1) | BE1019649A5 (fr) |
| DK (1) | DK2643100T3 (fr) |
| ES (1) | ES2536283T3 (fr) |
| PT (1) | PT2643100E (fr) |
| WO (1) | WO2012069464A1 (fr) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104525356A (zh) * | 2014-12-27 | 2015-04-22 | 高庆泽 | 一种易拆装的洗矿槽 |
| GB201703396D0 (en) * | 2017-03-02 | 2017-04-19 | Mccloskey Int Ltd | An improved vibrating screener |
| CN107185804A (zh) * | 2017-05-24 | 2017-09-22 | 青海万加环保新材料有限公司 | 一种湿法筛分用振动筛 |
| KR102072646B1 (ko) * | 2017-11-28 | 2020-02-03 | 송순철 | 분리망 구조물 |
| FR3148919B1 (fr) * | 2023-05-22 | 2025-05-02 | Claude Foullon | Procédé de séparation de particules à recycler |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2237491A (en) | 1938-09-20 | 1941-04-08 | William H Kutz | Shaker screen |
| FR1461603A (fr) * | 1965-10-26 | 1966-02-25 | Tamiseur essoreur | |
| DE19515349C2 (de) * | 1995-04-26 | 1997-04-24 | Peter Dieckmann | Vorrichtung zur Trennung eines aus dickeren und dünneren Feststoffpartikeln unterschiedlicher Gestalt und/oder Dichte bestehenden Aufgabegutes in mindestens zwei Komponenten |
| GB0714391D0 (en) * | 2007-07-24 | 2007-09-05 | Axiom Process Ltd | Vibratory screening apparatus |
-
2010
- 2010-11-22 BE BE2010/0696A patent/BE1019649A5/fr active
-
2011
- 2011-11-22 EP EP11790744.4A patent/EP2643100B1/fr active Active
- 2011-11-22 ES ES11790744.4T patent/ES2536283T3/es active Active
- 2011-11-22 PT PT117907444T patent/PT2643100E/pt unknown
- 2011-11-22 DK DK11790744.4T patent/DK2643100T3/en active
- 2011-11-22 WO PCT/EP2011/070665 patent/WO2012069464A1/fr not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2012069464A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012069464A1 (fr) | 2012-05-31 |
| PT2643100E (pt) | 2015-06-01 |
| DK2643100T3 (en) | 2015-05-18 |
| BE1019649A5 (fr) | 2012-09-04 |
| EP2643100B1 (fr) | 2015-02-18 |
| ES2536283T3 (es) | 2015-05-22 |
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