KR101697084B1 - Device for sorting particles size, and method for sorting particles size - Google Patents

Device for sorting particles size, and method for sorting particles size Download PDF

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Publication number
KR101697084B1
KR101697084B1 KR1020150127865A KR20150127865A KR101697084B1 KR 101697084 B1 KR101697084 B1 KR 101697084B1 KR 1020150127865 A KR1020150127865 A KR 1020150127865A KR 20150127865 A KR20150127865 A KR 20150127865A KR 101697084 B1 KR101697084 B1 KR 101697084B1
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KR
South Korea
Prior art keywords
sorting
screen mat
damper
screening
upper screen
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KR1020150127865A
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Korean (ko)
Inventor
이준수
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주식회사 포스코
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Priority to KR1020150127865A priority Critical patent/KR101697084B1/en
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Publication of KR101697084B1 publication Critical patent/KR101697084B1/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
    • B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
    • F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Combined Means For Separation Of Solids (AREA)

Abstract

A particle size selecting apparatus and a particle size selecting method. According to another aspect of the present invention, there is provided an upper screen mat, which is disposed at a portion where a screening object is dropped and moves the screening object in one direction, A lower screen mat for sorting the objects to be sorted smaller than the set size while moving the object in the same direction as the direction of conveyance of the upper screen mat, And a direction switching unit for switching the direction to the opposite direction.

Description

TECHNICAL FIELD [0001] The present invention relates to a device for selecting a particle size and a method for selecting a particle size,

[0001] The present invention relates to a screening apparatus and a screening method for screening a screen mat in a bidirectional manner by changing a conventional screen mat into a pinball type in which screening is performed only in a single direction, The present invention relates to a particle sorting apparatus and a particle size sorting method which can increase a weighing efficiency by increasing a weighing time compared to an existing screen mat.

In general, hot blast furnace melts iron ore in a blast furnace that produces molten iron with iron ore and coke. At this time, in order to produce iron wire more efficiently, hot air must pass through much contact with iron ore. In order to do that, the charge to be charged in the blast furnace should have a constant particle size and no minute.

The screen sorting device that screens the raw material (ore) charged in the blast furnace is called a screen. Only a certain amount of the raw material exceeding a certain size is charged into the blast furnace by the screen mat. The longer the time (weighed time) that touches the screen mat and the raw material, the more granular raw material can be screened and the screen efficiency becomes higher.

The ore assembled in the blast furnace bin is screened in the screen equipment and classified into Ore Weighing Hoppe r and transferred from the Ore Weighing Hopper to the relay tank, (Belt) to the blast furnace.

In the blast furnace bin (Bin), screens are installed to select ore ore with a size less than the set standard. Only ore with large particle size that is not separated from the screen is charged into the blast furnace (the other process is semi-luminous).

When the weighing is instructed in the cabin, the bin gate is opened according to the set program. At this time, the granules are sorted by passing over the screen mat which is pouring the soft raw material.

However, since the amount of ore passing through the screen is large, the efficiency of the screen (screen) deteriorates and it is difficult to completely sort out the granules. In order to charge the ore into the blast furnace after the perfect granularity is sorted, the blast furnace is continuously melted. Time is short.

That is, conventionally, the screen mat is in the form of a flat plate, and the screen mat is vibrated to select the particle size of the raw material. Therefore, when the raw material is poured onto the uppermost mat, it vertically falls down to the lower mat. When the raw material is dropped on the lower mat, the lower mat is difficult to use as a whole, and since the sintered ores are progressed and sorted on the lower mat from a position away from the uppermost mat, the weighed time is reduced accordingly, .

Therefore, there is a desperate need for a technique for allowing a larger amount of the raw material to pass through the screen while effectively performing particle selection.

The present invention relates to a screening apparatus for screening a screen mat in a bidirectional manner by changing a conventional screen mat which is selected only in a single direction to a pinball type and is capable of increasing the screening efficiency by increasing the weighing time A granular sorting apparatus and a granular sorting method.

According to an embodiment of the present invention, there is provided an upper screen mat for selecting a screening object having a predetermined size or smaller while moving the screening object in one direction,

A lower screen mat installed at a predetermined distance below the upper screen mat to select a screening object smaller than a set size while moving the screening object in the same direction as the conveying direction of the upper screen mat,

And a direction switching unit for switching the moving direction of the sorting object passing through the upper screen mat to a direction opposite to the moving direction of the upper screen mat.

The sorting object is provided as ore,

The direction switching unit may include a slide swash plate installed between the upper screen mat and the lower screen mat to slide the ore.

The slide swash plate may include a bottom surface forming a bottom surface and an inclined surface formed to be inclined with respect to the bottom surface.

And an abrasion-resistant liner may be provided on an inclined surface of the slide swash plate.

The slide swash plate may be provided with a damper at a predetermined interval from the one end of the upper screen mat.

The damper may include a damper bottom surface forming a floor and a damper slope surface formed to be inclined with respect to the damper bottom surface.

The damper slope may be provided with a wear-resistant liner.

The slide swash plate may be provided with a rotor for adjusting the angle of the damper.

The rotor may be rotatably installed in the rotor housing.

According to an embodiment of the present invention, there is provided a screening method for screening a screening object, comprising: a first screening step of primarily screening the screening object having a particle size smaller than a predetermined size while moving the screening object in one direction;

A direction switching step of switching the direction of movement of the sorting object not selected in the first sorting step to a direction opposite to the moving direction of the first sorting step;

And a second sorting step of sorting the sorting objects with a grain size smaller than a set size while moving the sorting object turned by the direction switching step in the same direction as the feeding direction of the first sorting step A method of selecting a grain size can be provided.

The sorting object is provided as ore,

The direction changing step may include a sliding step for sliding the ore falling after passing through the upper screen mat in the first screening step in a direction opposite to the moving direction of the first screening step by the sliding swash plate.

(Opposed light), which is provided between the first selecting step and the direction changing step and has a size larger than a setting size of the ores having passed through the upper screen mat in the first screening step, is selected by a damper And a separation optical splitting step for splitting the optical fiber without being transferred to the direction switching step.

The opposed light separation step may include an angle adjusting step of adjusting an angle of the damper with respect to the sliding swash plate.

According to the embodiment of the present invention, since the pin mat type screen mat is installed, the raw material (ore) selected at the uppermost stage is moved to the first progress part at the lower stage and then sorted, so that the entire lower screen mat can be used Thereby increasing the screening efficiency.

1 is a schematic perspective view of a particle size sorter according to an embodiment of the present invention.
2 is a schematic side cross-sectional view of a particle size sorter according to one embodiment of the present invention.
3 is a schematic block diagram of a particle size selection method according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings, so that those skilled in the art can easily carry out the present invention. As will be readily understood by those skilled in the art, the following embodiments may be modified in various ways within the scope and spirit of the present invention. Wherever possible, the same or similar parts are denoted using the same reference numerals in the drawings.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms as used herein include plural forms as long as the phrases do not expressly express the opposite meaning thereto. Means that a particular feature, region, integer, step, operation, element and / or component is specified, and that other specific features, regions, integers, steps, operations, elements, components, and / And the like.

All terms including technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the present invention belongs. Predefined terms are further interpreted as having a meaning consistent with the relevant technical literature and the present disclosure, and are not to be construed as ideal or very formal meanings unless defined otherwise.

FIG. 1 is a schematic perspective view of a particle size sorting apparatus according to an embodiment of the present invention, and FIG. 2 is a schematic side sectional view of a particle size sorting apparatus according to an embodiment of the present invention.

1 and 2, the particle size sorting apparatus according to an embodiment of the present invention is an apparatus for sorting the raw materials (ores) charged into a blast furnace efficiently.

The particle screening apparatus includes an upper screen mat 100 disposed at a portion where a screening object is dropped and an upper screen mat 100 for screening a screening object having a particle size smaller than a predetermined size while moving the screening object in one direction by a vibration of an oscillator ,

The upper screen mat 100 is installed parallel to the lower portion of the upper screen mat 100 with a predetermined distance therebetween and moves the screening object 100 in the same direction as the upper screen mat 100 by the vibration of the vibrator A lower screen mat 200 for screening a screening object having a particle size of

And a direction switching unit for switching the moving direction of the sorting object having passed through the upper screen mat 100 to a direction opposite to the moving direction of the upper screen mat 10.

The sorting object may be provided with ore (soft raw material) 10.

A plurality of upper screening holes 110 may be formed in the upper screen mat 100 to move the ore 10 in one direction by vibrating the vibrator to select ores 10 having a size smaller than a predetermined size.

The lower screen mats 200 are provided with a lower screening hole 210 for selecting ores having a size smaller than a set size while moving the ore 10 in the same direction as the direction of conveyance of the upper screen mat by vibrations of the vibrator Can be formed.

The direction switching unit is installed between the upper screen mat 100 and the lower screen mat 100 and guides the ore 10 falling after passing through the upper screen mat 100 to the upper screen mat 100 And a slide swash plate 300 for sliding in a direction opposite to the moving direction.

The slide swash plate 300 may be made of a rigid material such as stainless steel.

The slide swash plate 300 includes a bottom surface 301 forming a bottom surface, a slope surface 302 formed to be inclined at a predetermined angle with respect to the bottom surface of the slide plate 300, and a slope surface 302 connecting the bottom surface and the slope surface (Not shown).

At least one wear-resistant liner 400 may be provided on the slope 301 of the slide slope plate to prevent wear of the slope 301 due to contact with the ore 10. [

One end of the slide swash plate 300, that is, the connecting surface 303, is provided at a predetermined distance from one end of the upper screen mat 100, and a portion of the ore 10 passing through the upper screen mat 100 A damper 310 may be provided for selectively separating ore (opposed light) 20 having a particle size larger than a set size by a predetermined magnitude or more and separating it from the slide swash plate 300 so as not to fall off.

The damper 310 includes a damper bottom surface 311 forming a floor, a damper inclined surface 312 formed at an angle with the damper bottom surface 311 at an angle to the damper 310, And a damper connecting surface 313 connecting the damper bottom surface 311 and the damper inclined surface 313.

At least one wear-resistant liner 410 may be provided on the damper slope surface 312 to prevent wear of the damper slope surface 312 due to contact with the ore.

2, the damper 310 is provided at one end of the slide swash plate 300 with respect to the inclined surface 302 of the slide swash plate 300 so that the efficiency of the damper 310 can be changed according to the ore. A rotor 320 for adjusting the angle of the rotor 310 may be installed.

The rotor 320 may be rotatably installed in a rotor housing 330 provided on a connection surface 303 of the slide swash plate 300.

The upper end surface of the rotor housing may be formed as a plane parallel to the bottom surface of the slide slope plate, and may be formed of the bottom surface of the damper.

The rotor 320 is disposed between the upper end of the damper 310 and one end of the upper screen mat 100 and has a size larger than a predetermined size of the ore 10 passing through the upper screen mat 100 The angle of the damper 310 is adjusted to a predetermined angle so as to separate only the ore having opposed sides of the damper 310 from the inclined surface 302 of the slide swash plate 300, The distance between the upper end and the one end of the upper screen mat 100 can be adjusted.

Hereinafter, the operation of the particle size sorting apparatus according to one embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG.

In the following, a screening apparatus (screen facility) according to an embodiment of the present invention will be described as an example of screening a raw material (ore) charged into a blast furnace, but a raw material (ore) is charged in a device other than the blast furnace The present invention is not limited thereto.

In the particle size sorting apparatus according to an embodiment of the present invention, after the ore (sintered ores) 10 are first passed over the uppermost upper screen mat 100 by changing the mat shape of the particle size sorting apparatus into a pinball shape, The orbiting time of the ore (sintered ores) 10 advances (moves) in a direction opposite to the traveling direction of the upper screen mat 100 by the sliding swash plate 300 of the switching portion,

Thereafter, in the lower screen mat (200), the ore (sintered ores) (10) proceed in the same direction as the traveling direction of the uppermost top screen mat (100) Whereby the particle sorting efficiency can be greatly improved.

That is, in the case of a pinball-type mat according to an embodiment of the present invention, for example, the ore (sintered ores) 10 from the blast furnace bin Bin fall on the upper screen mat 100, (Arrow direction) in FIG. 1 due to the vibration of the vibrator without falling vertically directly to the mat 200, and then falls on the sliding swash plate 300 of the direction switching portion and is again moved in the leftward direction 100) in the direction opposite to the traveling direction of the ore).

When the ore is moved in a direction opposite to the advancing direction of the ore in the upper screen mat 100 by the sliding swash plate 300, the ore is vertically separated from the upper screen mat 100, The lower screen mats 200 can be entirely used from the left to the right in FIG. 1 as compared with the screen equipment of the conventional screening apparatus for falling granules.

 1) of the upper screen mat 100 is separated by a damper 310 using a similar principle (inertia) to a classifying damper, The ore having large mass / large mass (opposed light: opposed sintered ores) of the ore (raw material) not selected (passed) through the hole 110 is allowed to proceed as it is in the proceeding direction of the ore, The minute ore is separated from the slope 302 of the sliding swash plate 300 and then slides on the lower screen mat 200 so that the ore is separated from the slope 302 of the sliding swash plate 300 Respectively.

The particle size selection screening method according to an embodiment of the present invention is the same as that described in the granularity screening apparatus according to an embodiment of the present invention except for the details to be described below, and a detailed description thereof will be omitted.

3 is a schematic block diagram of a particle size selection method according to an embodiment of the present invention.

Referring to FIG. 3, when the sorting object falls on the upper screen mat 100, the sorting method according to an embodiment of the present invention moves the sorting object in one direction by the vibration of the vibrator, A first screening step (S10) for primarily selecting an object,

A direction switching step for switching the moving direction of the sorting object passed through the upper screen mat 100 without being sorted in the first sorting step S10 to a direction opposite to the moving direction of the first sorting step S10 S20), and

When the ore turned by the direction switching step (S20) falls on the lower screen mat (200), the selected object is moved in the same direction as the feeding direction of the first screening step (S10) And a second sorting step (S30) for secondarily sorting the sorted objects having a particle size equal to or less than the particle size of the selected object.

The sorting object may be provided with ore (soft raw material) 10.

The direction switching step S20 is a step of switching the ore 10 that has passed through the upper screen mat 100 without being sorted in the first screening step S10 by the sliding swash plate 300 in the first screening step S10 And a sliding step S21 for sliding in a direction opposite to the moving direction of the sliding member.

The ore passing through the upper screen mat in the first screening step (S10) may be sandwiched between the first screening step (S10) and the redirecting step (S20) (S11) for selecting only the opposed light (20) by the damper (310) and separating the opposed light without being transferred to the direction switching step (S20).

The opposed light separation step S11 may be performed in the first screening step S10 so that the efficiency of the ore passing through the upper screen mat 100 may be different from that of the damper 310 may be adjusted by adjusting the angle of the step S12.

10: Ore
100: upper screen mat
200: lower screen mat
300: Sliding swash plate
310: damper
320: rotor
330: rotor housing

Claims (13)

An upper screen mat provided at a portion where the screening object is dropped to move the screening object in one direction to select a screening object having a set size or less,
A lower screen mat installed at a predetermined distance below the upper screen mat to select a screening object having a predetermined size or smaller while moving the screening object in the same direction as the conveying direction of the upper screen mat,
And a direction switching unit for switching the moving direction of the sorting object passing through the upper screen mat to a direction opposite to the moving direction of the upper screen mat,
The sorting object is provided as ore,
Wherein the direction switching unit includes a slide swash plate installed between the upper screen mat and the lower screen mat to slide the ore,
A damper is installed on the slide swash plate at a predetermined distance from one end of the upper screen mat,
Wherein the slide swash plate is provided with a rotor for adjusting the angle of the damper. delete The method according to claim 1,
Wherein the slide swash plate includes a bottom surface forming a floor and an inclined surface inclined with respect to the bottom surface. The method of claim 3,
And an abrasion-resistant liner is provided on an inclined surface of the slide swash plate. delete The method according to claim 1,
Wherein the damper includes a damper bottom surface forming a floor and a damper slope surface formed to be inclined with respect to the damper bottom surface. The method according to claim 6,
And an abrasion-resistant liner is provided on the damper slope surface. delete The method according to claim 1,
And the rotor is rotatably installed in the rotor housing. A first screening step for primarily selecting the screening object having a particle size smaller than a set size while moving the screening object in one direction,
A direction switching step of switching the direction of movement of the sorting object not selected in the first sorting step to a direction opposite to the moving direction of the first sorting step;
And a second sorting step of sorting the sorting objects with a grain size smaller than a set size while moving the sorting object turned by the direction changing step in the same direction as the feeding direction of the first sorting step ,
The sorting object is provided as ore,
Wherein the direction switching step includes a sliding step for sliding the ore falling after passing through the upper screen mat in the first sorting step in a direction opposite to the moving direction of the first sorting step by the sliding swash plate,
(Opposed light) which is provided between the first selecting step and the direction changing step and has a size larger than a setting size of the ores having passed through the upper screen mat in the first screening step by a damper And separating the separated particles so as not to be transferred to the direction changing step. delete delete 11. The method of claim 10,
Wherein the opposed light separation step includes an angle adjusting step of adjusting an angle of the damper with respect to the sliding swash plate.
KR1020150127865A 2015-09-09 2015-09-09 Device for sorting particles size, and method for sorting particles size KR101697084B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190097538A (en) 2018-02-12 2019-08-21 주식회사 포스코 Apparatus and Method for particles size
CN115739759A (en) * 2022-10-26 2023-03-07 无锡市宜刚耐火材料有限公司 Sorting device for producing aluminum silicate refractory material and using method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140044055A (en) * 2012-10-04 2014-04-14 주식회사 포스코 Charging control system for blast furnace
CN203899897U (en) * 2014-05-30 2014-10-29 江苏德鲁尼木业有限公司 Device for screening wood processing leftover materials
KR101510544B1 (en) * 2013-10-28 2015-04-08 주식회사 포스코 Screen having apparatus for removing adhesional material

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140044055A (en) * 2012-10-04 2014-04-14 주식회사 포스코 Charging control system for blast furnace
KR101510544B1 (en) * 2013-10-28 2015-04-08 주식회사 포스코 Screen having apparatus for removing adhesional material
CN203899897U (en) * 2014-05-30 2014-10-29 江苏德鲁尼木业有限公司 Device for screening wood processing leftover materials

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190097538A (en) 2018-02-12 2019-08-21 주식회사 포스코 Apparatus and Method for particles size
KR102103390B1 (en) 2018-02-12 2020-04-22 주식회사 포스코 Apparatus and Method for particles size
CN115739759A (en) * 2022-10-26 2023-03-07 无锡市宜刚耐火材料有限公司 Sorting device for producing aluminum silicate refractory material and using method
CN115739759B (en) * 2022-10-26 2023-10-20 无锡市宜刚耐火材料有限公司 Sorting device for producing aluminum silicate refractory material and use method

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