KR20100122399A - Waste glass screening dry-type apparatus - Google Patents

Waste glass screening dry-type apparatus Download PDF

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Publication number
KR20100122399A
KR20100122399A KR1020090041420A KR20090041420A KR20100122399A KR 20100122399 A KR20100122399 A KR 20100122399A KR 1020090041420 A KR1020090041420 A KR 1020090041420A KR 20090041420 A KR20090041420 A KR 20090041420A KR 20100122399 A KR20100122399 A KR 20100122399A
Authority
KR
South Korea
Prior art keywords
drum
sub
glass
relay
circumferential surface
Prior art date
Application number
KR1020090041420A
Other languages
Korean (ko)
Inventor
장의택
Original Assignee
유한회사인동지알시
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 유한회사인동지알시 filed Critical 유한회사인동지알시
Priority to KR1020090041420A priority Critical patent/KR20100122399A/en
Publication of KR20100122399A publication Critical patent/KR20100122399A/en

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    • 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
    • B07B1/18—Drum screens
    • B07B1/22—Revolving drums
    • B07B1/24—Revolving drums with fixed or moving interior agitators
    • 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
    • B07B13/04—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices according to size
    • 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
    • B07B13/14—Details or accessories
    • B07B13/16—Feed or discharge arrangements

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  • Combined Means For Separation Of Solids (AREA)

Abstract

The present invention relates to a dry waste glass separation screen device, which is rotatably supported by a supporting means, arranged in coaxially to separate and discharge the pieces of glass injected through the inlet through different discharge paths according to size. A separator having a plurality of drums, a discharge portion having a plurality of chutes for collecting and discharging pieces of glass provided to correspond to the discharge paths of the drums of the separator and driving the separator.

Dry waste glass separation screen device according to the present invention can improve the stirring efficiency of the glass pieces by the rotation of the drum and the amount of glass tissue can be increased to increase the separation rate, the passing size of the outer peripheral surface and side of each drum By applying differently, it provides the advantage of improving the sorting ability by size of glass pieces.

Description

Waste glass screening dry-type apparatus

The present invention relates to a dry waste glass separation screen device, and more particularly to a dry waste glass separation screen device for separating the glass pieces according to the size.

To recycle the waste glass, clean bottles should be reused after washing. Otherwise, the glass is first sorted by color, the sorted glass is crushed, and the pieces of glass are recycled according to size.

Pieces of glass of size or about 2.5 to 5.0 cm in diameter are used as raw materials to make new bottles. Glass fragments not used as raw materials are, depending on their size, used for road pavement, building interior and exterior coatings, road surface painting, and thermal insulation cold insulation aggregates. Therefore, in the process of recycling the waste glass, it is essential to sort the broken glass pieces according to the size.

If this process is done by hand, it is not only too cumbersome but also causes a problem that it is difficult to select fine pieces with the naked eye. In order to improve this problem, conventionally, a vibrating sorter was used to classify pieces of glass by size. Korean Patent Publication No. 10-0256991 discloses a vibrating separator in the process of recycling waste glass.

The vibrator classifier classifies the glass product which is finely crushed and conveyed by the crushing unit by the vibration of a flat multistage device having different sieve sizes.

However, the vibrating separator has a problem in that the stirring efficiency between glass fragments having different particle sizes is lowered and the receiving space is limited to the flat plate area, thereby lowering the separation speed by size and generating noise due to vibration.

The present invention has been made to improve the above problems, the object of the present invention is to provide a dry waste glass separation screen device that can increase the processing speed of separating the glass pieces by size by increasing the stirring efficiency of the glass pieces. .

Dry waste glass separation screen device according to the present invention is rotatably supported by the support means, to achieve the above object can be separated and discharged by separating the glass pieces introduced through the inlet through different discharge paths according to the size. A separator having a plurality of drums arranged coaxially so as to be arranged, a discharge part having a plurality of chutes for collecting and discharging pieces of glass provided and corresponding to a discharge path of each drum of the separator and driving the separator A driving part is provided.

The separating part is rotatably mounted to the supporting means and is rotated by the driving of the driving part, and on one side, a plurality of first side outlets are formed along the circumferential direction on a position spaced apart from the edge in the rotational center direction, and on the other side The inlet is formed, the outer circumferential surface has a main drum having a transmission portion formed with a first relay through hole for passing a glass piece of a size smaller than the size of the first side outlet, and the outer diameter around the main drum At least one sub drum coupled to the multi-stage having a sub receiving space in the extending direction to receive the glass fragments discharged through the permeable portion of the main drum to be separated and discharged sequentially by size through the side and outer peripheral surface It is preferable to provide.

More preferably, the sub-drum is coupled to an outer circumferential surface of the main drum on a position spaced apart from one side of the main drum, and has a first sub drum having a first sub receiving space, and a portion of an outer circumferential surface of the first sub drum. A second sub drum having a second sub receiving space coupled to an outer circumferential surface of the first sub drum on a position spaced apart from the first sub drum from one side of the main drum to be exposed to the outside; A second relay through hole having a size smaller than that of the first relay through hole is formed on an outer circumferential surface of the sub drum facing the second sub drum, and one side of the first sub drum arranged in parallel with one side of the main drum. On the side, a second side outlet having a size that is larger than the second relay through hole is spaced apart from the edge of the first sub drum in the direction toward the center of rotation. A plurality of third relay through holes having a smaller size than the second relay through hole are formed on an outer circumferential surface of the second sub drum, and the second sub drum is arranged side by side with one side of the first sub drum. On the outer side of the sub drum, a third side outlet is formed which is extended from the third relay through at a position spaced apart from the edge of the second sub drum in the direction toward the center of rotation.

In addition, according to one aspect of the present invention, the transmission portion of the main drum is a first transmission portion and the first transmission portion is formed in the region on the outer circumferential surface opposite to the outer circumferential surface of the second sub drum, the first transmission portion A plurality of rods 215 are formed as a second transmission portion coupled to be spaced apart from each other in parallel with each other in a width corresponding to the inner diameter of the first relay through hole in a direction toward one side of the first sub drum from the A first outer circumferential surface outlet of an extended size than the first relay through hole is formed on an outer circumferential surface of the extended portion extending from the end of the second transmission portion to one side of the main drum.

The support means includes a frame, a pillow block installed in the frame to rotatably support a rotation axis extending from the center of one side of the main drum, and the main drum opposite to the pillow block is inclined lower than the other side. It is preferable to have a plurality of support rollers rotatably installed on the frame to rotatably support the outer circumferential surface of the drum.

More preferably, it is further provided with a brush which is installed to face the second sub drum so as to be separated from the outer peripheral surface of the second sub drum by interference, and is interlocked by the driving unit.

The apparatus may further include a foreign matter removing unit for separating foreign matter by applying vibration to the glass fragments discharged through the chute.

Dry waste glass separation screen device according to the present invention can improve the stirring efficiency of the glass pieces by the rotation of the drum and the amount of glass tissue can be increased to increase the separation rate, the passing size of the outer peripheral surface and side of each drum By applying differently, it provides the advantage of improving the sorting ability by size of glass pieces.

Hereinafter, a dry waste glass screen device according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a dry separation waste glass screen device according to a first embodiment of the present invention.

Referring to FIG. 1, the dry waste glass separation screen device 100 includes a support unit 600, a separation unit 200, a discharge unit 300, a driving unit 500, and a foreign material removing unit 400.

The separating unit 200 will be described with reference to FIG. 2.

The separation unit 200 includes a main drum 210 and first and second sub drums 221 and 225 coaxially arranged to separate and separate glass pieces through different discharge paths according to sizes.

The main drum 210 is rotatably mounted to the support means 600, and is formed in a hollow cylindrical shape.

On one side of the main drum 210, a plurality of first side outlets 217 are formed along a circumferential direction on a position spaced apart from the edge in a rotational center direction, and an inlet 218 for injecting a piece of glass into the other side. Is formed.

The main drum 210 is divided into a first transmission part 211, a second transmission part 212, and an extension part 213.

The outer circumferential surface of the first transmission portion 211 has a mesh shape in which a plurality of first relay through holes 219 are formed to pass glass pieces smaller than the size of the first side surface discharge holes 217.

The first transmission portion 211 is preferably formed of a length of the second sub drum 225. The first relay through hole 219 is preferably formed to have an internal diameter of about 24mm.

The second transmission portion 212 has a plurality of rods having a width corresponding to the inner diameter of the first relay passage 219 in a direction from the first transmission portion 211 toward one side of the first sub drum 221. 215 are extended to be spaced next to each other and coupled to the extension portion 213. An extension length from the first transmission portion 211 to the second transmission portion 212 is preferably applied to correspond to the length of the first sub drum 221.

The extension part 213 refers to a part extending from the end of the second transmission part 212 to one side of the main drum 210.

The outer peripheral surface exposed to the outside of the extension portion 213 is formed with a first outer peripheral surface discharge port 216 of a larger size than the first relay through hole 219. In addition, a first driven sprocket 501 is formed on the outer circumferential surface of the extended portion 213 exposed to the outside of the main drum 210 so as to receive a rotational force from the driving unit 500.

The first and second sub drums 221 and 225 are formed in a direction in which an outer diameter thereof extends around the main drum 210.

The first sub drum 221 is coupled to the outer circumferential surface of the extension portion 213 of the main drum 210 on a position spaced apart from one side of the main drum 210 to have a first sub receiving space 224.

The second sub drum 225 has a first sub drum in a position spaced apart from the first sub drum 221 from one side of the main drum 210 so that a part of the outer circumferential surface of the first sub drum 221 is exposed to the outside. It is coupled to the outer circumferential surface of 221 and has a second sub receiving space 226.

The outer circumferential surface of the first sub drum 221 facing the second sub drum 225 has a mesh formed with a second relay through hole 222 having a size smaller than that of the first through hole 219. The second relay through hole 222 is preferably formed to have a size of about 16mm inner diameter.

In addition, on one side of the first sub drum 221 arranged in parallel with one side of the main drum 210, the second relay on a position spaced apart from the edge of the first sub drum 221 in the direction toward the center of rotation A plurality of second side outlets 223 having a size larger than that of the through holes 222 are formed.

The second sub drum 225 has a mesh formed on the outer circumferential surface thereof with a third relay through hole 228 having a size smaller than that of the second relay through hole 222. The third relay through hole 228 is preferably formed to have an inner diameter of about 5mm in size. A third relay is provided on an outer surface of the second sub drum 225 arranged in parallel with one side of the first sub drum 221 on a position spaced apart from an edge of the second sub drum 225 in a direction toward the center of rotation. A plurality of third side outlets 227 having a size larger than that of the through holes 228 are formed.

The support means 600 includes a pillow block 601 installed on the frame 700 to rotatably support the frame 700, a rotation shaft 603 extending from the center of one side of the main drum 210, and the pillow block 601. A plurality of support rollers 602 rotatably installed on the frame 700 to rotatably support the outer circumferential surface of the main drum 210 so that one side of the main drum 210 is inclined lower than the other side. do.

The discharge unit 300 will be described with reference to FIG. 3.

The discharge part 300 is composed of first, second, third, fourth and fifth chutes 310, 320, 3030, 340 and 350.

The first chute 310 collects and discharges the glass pieces discharged through the third relay through hole 228. The first chute 310 has a size equal to the axial length of the second sub drum 225. Here, the side of the first chute 310 adjacent to the side of the second sub drum 225 is partitioned to a height lower than the position where the third side outlet 227 is spaced apart from the outer edge of the second sub drum 225. Is formed.

The second chute 320 collects and discharges the glass pieces discharged through the third side outlet 227. One side of the second chute 320 is installed in close contact with the third side outlet 227 in order to easily collect the glass fragments discharged.

The third chute 330 collects and discharges the glass fragments discharged through the second side outlet 223.

The third chute 330 has a second side outlet 223 formed at the lowest position among the plurality of second side outlets 223 formed on the side surface of the first sub drum 221 so as to more easily collect the glass fragments discharged. The partition is formed to the extent that it is covered.

 The fourth chute 340 collects and discharges the glass pieces discharged through the first outer circumferential surface discharge port 216.

In addition, the fifth chute 350 collects and discharges the glass fragments discharged through the first side outlet 217. The fifth chute 350 is installed at a distance close to the first side outlet 217 to easily collect pieces of glass.

The foreign material removing unit 400 is installed under the first chute 310, the second vibrator 402 installed below the second chute 320, and the third chute 330 below. A third vibrator 403 and a fourth vibrator 404 provided below the fourth chute 340 are provided. The first, second, third, and fourth vibrators 401, 402, 403, and 404 apply vibration by transferring the pieces of glass discharged through the first, second, third, and fourth chutes 310, 320, 330, and 340 to the next process. Remove any paper scrap from labels or labels mixed in the pieces.

On the other hand, each of the vibrators (401, 402, 403, 404) is provided with a suction fan 410, to suck out the foreign matter separated from the glass pieces.

On the other hand, preferably the upper portion of the second sub drum 225, the removal portion which is installed to face the second sub drum 225 so as to separate the glass pieces caught on the outer peripheral surface of the second sub drum 225 by interference ( 240 is provided.

The removal unit 240 is rotatably supported by the frame 700 and installed on the auxiliary shaft 241 rotated by the driving unit 500 and the auxiliary shaft 241 on the outer circumferential surface of the second sub drum 225. It is composed of a brush 242 that can separate the glass fragments. The brush 242 is formed of a soft material and rotates in contact with the outer circumferential surface of the second sub drum 225. Although not shown in the drawing, unlike the embodiment, the removal unit 240 may be provided with a plurality of brushes.

The driving unit 500 includes a driving motor 510 fixed to the frame 700, a first driving sprocket 502 fastened to the driving motor 510, and a second driven fastening fastened to the auxiliary shaft 241. A second drive sprocket fastened to the first chain 505 and the drive motor 510 to connect the procket 504, the first drive sprocket 502 and the second driven sprocket 504 in an endless track. 503, a second chain 506 connecting the first driven sprocket 501 fastened to the main drum 210, and the second driven sprocket 503 and the first driven sprocket 501 in an endless track. )

Referring to the operation of the separation unit 200 of the dry waste glass separation screen device 100 according to the present invention configured as described above are as follows.

First, the main drum 210 rotatably supported by the support means 600 is rotated through the driver 500. Inject the glass pieces to be separated by the inlet 218 formed on the side of the rotating main drum (210). The injected glass fragments are discharged to the first sub drum 221 through the first permeable portion 211 and the second permeable portion 212. Here, the glass fragments of a relatively large size that are not discharged through the first and second permeable portions 211 and 212 are moved to the first outer circumferential surface outlet 216 and are separated and separated again through the first outer circumferential surface outlet 216. Glass fragments discharged through the first outer circumferential surface outlet 216 are discharged through the fourth chute 340 and then transferred to the next process. Glass fragments that are not discharged through the first outer surface discharge port 216 are discharged to the fifth chute 350 through the first side discharge port 217.

Meanwhile, the glass fragments discharged through the first and second transparent portions 211 and 212 may be accommodated in the first sub accommodation space 224, and the glass pieces accommodated in the first sub accommodation space 224 may include the second relay through-hole. And screened by 222. The separated glass pieces are discharged to the second sub drum 225. At this time, the glass fragments which are not discharged through the second relay through hole 222 are moved to the side surface of the first sub drum 221, and the moved glass fragments are discharged through the second side discharge holes 223 formed at the side surfaces. . The glass fragments discharged through the second side outlet 223 are collected through the third chute 330 and then transferred to the next process.

The glass pieces discharged through the first sub drum 221 are accommodated in the second sub accommodation space 226, and the glass pieces accommodated in the second sub accommodation space 226 are transferred to the third relay through hole 228. By screening and separation. Fine pieces of glass which are not discharged into the third relay through hole 228 are separated from the third relay through hole 228 by a brush 242 rotating on the outer circumferential surface of the second sub drum 225.

The glass fragments discharged through the third relay through hole 228 are discharged to the first chute 310. At this time, the glass fragments which are not discharged through the third relay through hole 228 are moved to the side of the second sub drum 225, and the glass fragments are transferred to the second chute through the third side outlet 227 formed at the side. Discharged to 320.

Glass fragments discharged through the chute (310, 320, 330, 340, 350) is applied to the vibration through each vibrator (401, 402, 403, 404) to separate the foreign matter, and the suction foreign matter separated through the suction fan 410.

Although the present invention has been described with reference to the embodiments illustrated in the drawings, these are merely exemplary, and those skilled in the art will understand that various modifications and equivalent embodiments are possible therefrom.

Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

1 is a perspective view of a dry separation waste glass screen device according to a first embodiment of the present invention,

Figure 2 is an exploded perspective view of the separator of the dry separation waste glass screen device of Figure 1,

3 is a side view of the dry separating waste glass screen device of FIG. 1.

[Description of Symbols for Main Parts of Drawing]

100: dry waste glass separation screen unit

200: separator

300: discharge part

400: foreign material removal unit

500: drive unit

600: support means

Claims (7)

A separation part rotatably supported by the support means and having a plurality of drums arranged coaxially to separate and discharge the glass pieces introduced through the inlet through different discharge paths according to sizes; A discharge part having a plurality of chutes for collecting and discharging pieces of glass provided to correspond to the discharge paths of the respective drums of the separation part; And And a driving part for driving the separating part. The method of claim 1, The separating part is rotatably mounted to the supporting means and is rotated by the driving of the driving part, and on one side, a plurality of first side outlets are formed along the circumferential direction on a position spaced apart from the edge in the rotational center direction, and on the other side A main drum having a penetrating portion formed therein, the outer circumferential surface having a transmissive portion formed with a first relay through hole through which a piece of glass having a size smaller than that of the first side discharge port is formed; Combined in multiple stages having a sub receiving space in the direction in which the outer diameter extends around the main drum to accommodate the glass fragments discharged through the permeable portion of the main drum to be sequentially separated by size through the side and outer peripheral surface At least one sub drum formed; Dry waste glass separation screen device comprising a. 3. The method of claim 2, The subdrum A first sub drum coupled to an outer circumferential surface of the main drum on a position spaced apart from one side of the main drum and having a first sub receiving space; A second sub accommodation space coupled to an outer circumferential surface of the first sub drum on a position spaced apart from the first sub drum from one side of the main drum so that a portion of the outer circumferential surface of the first sub drum is exposed to the outside; 2 sub drums; On the outer circumferential surface of the first sub drum facing the second sub drum, a second relay through hole having a size smaller than that of the first relay through hole is formed, and the first sub is arranged side by side with one side of the main drum. One side of the drum has a plurality of circumferentially formed second side outlets on the position spaced apart from the edge of the first sub drum in the direction toward the center of rotation from the second relay through the circumference, A plurality of third relay through holes having a smaller size than the second relay through hole is formed on an outer circumferential surface of the second sub drum, and an outer surface of the second sub drum arranged in parallel with one side of the first sub drum. And a third side outlet having a size larger than that of the third relay through-hole on a position spaced apart from an edge of the second sub drum in a direction toward the center of rotation. The method of claim 3, wherein The transmissive portion of the main drum may include a first transmissive portion in which the first relay through hole is formed in an area on an outer circumferential surface of the main sub drum and an outer circumferential surface of the second sub drum, and one side of the first sub drum from the first transmissive portion. A plurality of rods are formed in a width corresponding to the inner diameter of the first relay through hole in a direction extending toward the second transmission part coupled to be spaced apart from each other in parallel. Dry waste glass, characterized in that the outer peripheral surface exposed to the outside of the extending portion extending from the end of the second transmission portion to the one side of the main drum is formed with a first outer peripheral surface outlet of an expanded size than the first relay through hole Separation screen device. The method of claim 4, wherein The support means A frame; A pillow block installed in the frame to rotatably support a rotation shaft extending from the center of one side of the main drum; And a plurality of support rollers rotatably installed on the frame so as to rotatably support an outer circumferential surface of the main drum such that one side of the main drum is inclined lower than the other side of the pillow block. Waste glass separation screen unit. The method of claim 4, wherein Dry waste glass, characterized in that it further comprises a brush which is installed to face the second sub drum so as to separate the glass pieces caught on the outer circumferential surface of the second sub drum by the drive unit to rotate Separation screen device. The method of claim 6, And a foreign material removing unit for separating foreign matter by applying vibration to the glass fragments discharged through the chute.
KR1020090041420A 2009-05-12 2009-05-12 Waste glass screening dry-type apparatus KR20100122399A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101066239B1 (en) * 2010-12-30 2011-09-21 롯데건설 주식회사 Multiple trommel screen for sorting of municipal waste
KR101367564B1 (en) * 2011-09-02 2014-02-25 김연실 Trommel device
KR101699778B1 (en) 2015-10-21 2017-02-01 (주) 엔피에코텍스 Separating apparatus for polyvinylbutyral and glass of waste glass plate using treating waste water
KR101721936B1 (en) 2015-10-21 2017-04-03 (주) 엔피에코텍스 Separating method for polyvinylbutyral and glass of waste glass plate using treating waste water
CN110813696A (en) * 2019-10-31 2020-02-21 南京信息职业技术学院 Coaxial drum-type pearl sorting machine
CN112495595A (en) * 2020-11-18 2021-03-16 安徽景图机械科技有限公司 Rotary full-automatic rice sieving machine
IT202000028850A1 (en) * 2020-11-27 2022-05-27 White Black Slag Tech S R L Improved Selection Apparatus

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101066239B1 (en) * 2010-12-30 2011-09-21 롯데건설 주식회사 Multiple trommel screen for sorting of municipal waste
KR101367564B1 (en) * 2011-09-02 2014-02-25 김연실 Trommel device
KR101699778B1 (en) 2015-10-21 2017-02-01 (주) 엔피에코텍스 Separating apparatus for polyvinylbutyral and glass of waste glass plate using treating waste water
KR101721936B1 (en) 2015-10-21 2017-04-03 (주) 엔피에코텍스 Separating method for polyvinylbutyral and glass of waste glass plate using treating waste water
CN110813696A (en) * 2019-10-31 2020-02-21 南京信息职业技术学院 Coaxial drum-type pearl sorting machine
CN110813696B (en) * 2019-10-31 2021-12-14 南京信息职业技术学院 Coaxial drum-type pearl sorting machine
CN112495595A (en) * 2020-11-18 2021-03-16 安徽景图机械科技有限公司 Rotary full-automatic rice sieving machine
CN112495595B (en) * 2020-11-18 2022-04-19 安徽仝芯机械科技有限公司 Rotary full-automatic rice sieving machine
IT202000028850A1 (en) * 2020-11-27 2022-05-27 White Black Slag Tech S R L Improved Selection Apparatus
WO2022112995A1 (en) * 2020-11-27 2022-06-02 White Black Slag Technology S.R.L. Apparatus for the selection of materials

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