CN109382307A - Steel slag preselects rotary screen and the bored slag pre-selection method of heat - Google Patents
Steel slag preselects rotary screen and the bored slag pre-selection method of heat Download PDFInfo
- Publication number
- CN109382307A CN109382307A CN201811417020.3A CN201811417020A CN109382307A CN 109382307 A CN109382307 A CN 109382307A CN 201811417020 A CN201811417020 A CN 201811417020A CN 109382307 A CN109382307 A CN 109382307A
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- CN
- China
- Prior art keywords
- sieve pore
- screen drum
- turning rolls
- steel slag
- screen
- 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.)
- Pending
Links
- 239000002893 slag Substances 0.000 title claims abstract description 55
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 38
- 239000010959 steel Substances 0.000 title claims abstract description 38
- 238000010187 selection method Methods 0.000 title claims abstract description 10
- 239000011148 porous material Substances 0.000 claims abstract description 52
- 239000000463 material Substances 0.000 claims abstract description 22
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 11
- 238000005096 rolling process Methods 0.000 claims abstract description 5
- 239000008187 granular material Substances 0.000 claims abstract description 4
- 239000002245 particle Substances 0.000 claims abstract description 4
- 125000004122 cyclic group Chemical group 0.000 claims description 3
- 210000000867 larynx Anatomy 0.000 claims description 3
- 230000011218 segmentation Effects 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 2
- 210000003205 muscle Anatomy 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 16
- 238000012545 processing Methods 0.000 abstract description 7
- 239000002994 raw material Substances 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000007885 magnetic separation Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000012536 packaging technology Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 210000003625 skull Anatomy 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/18—Drum screens
- B07B1/22—Revolving drums
-
- 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
Landscapes
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The present invention provides a kind of steel slag pre-selection rotary screen, including rack, turning rolls and screen drum, wherein, turning rolls is mounted on the rack, screen drum is placed on turning rolls, and screen drum has the tubular structure of one, is sequentially arranged feed inlet, reinforcing rib, the first sieve pore, the second sieve pore and discharge port along feedstock direction.The bored slag pre-selection method of heat based on the device, material is inputted into screen drum from feed inlet, the rolling along screen drum is fed forward, first passes through the first sieve pore and first export small particles material, then medium grain material is exported by the second sieve pore, last a small amount of large granular materials are discharged from discharge port.By the pre-selection of this equipment, the material of different size in hot bored slag is efficiently separated out, to provide regular raw material after subsequent technique processing, improves the efficiency of slag crushing processing.
Description
Technical field
The present invention relates to the smeltings of steel to melt Slag treatment field, and in particular to a kind of steel slag pre-selection rotary screen and hot bored slag pre-selection
Method.
Background technique
Converter slag is in a liquid state at high temperature, and in blocky, stick together shape after Slow cooling, and surface is easily at Sales shape, clinker one
As be dark-grey, dark brown, and quality is hard closely knit, and hole is less, and slag, which sticks together, crystallizes that fine and closely woven, the division is clearly demarcated with skull, especially slag
Shell, section are neat.Converter slag is after the bored process of heat, and granularity > 280mm bulk slag steel accounts for 1.5%, the middle block of 20 ~ 280mm
Steel slag accounts for 5%, and the steel slag fine powder of the bulky grain tailings 32% of 20 ~ 80mm, the little particle tailings 54% of < 20mm, < 20mm accounts for 7.5%.It can
See, the material accounting of 0 ~ 20mm granularity is more than 60% in the bored slag of heat.The subsequent treatment process of the bored slag of heat, target is larger grain fine crushing
The steel slag of degree, while selecting high-grade steel scrap therein.
Inventor has designed a whole set of steel slag advanced treatment process, by the technique application patent of invention and obtains invention specially
Benefit authorization, is detailed in CN108187880B, which puts into Tianjin Rongcheng steel enterprise and apply, the design based on " more broken few mills "
Principle, using corresponding broken, screening and magnetic plant, executes " 3 broken+3 roads sieves for the material characteristic of the bored steel slag of heat
+ 12 dedustings are cleared up in point+1 road of+2 road magnetic separation " move in circles, not only recycled to economical and efficient 99% or more metal, but also will be outer
Tailings partial size specification is sold to 0-5mm, 1% or less metal Ferrum content.The bored slag of heat and production among it for treatment process input
Object has specific material characteristic and technique requirement, need to specially design the corresponding steel slag pre-selection process device to match.
Inventor is based on being engaged in such product design manufacture practical experience and professional knowledge abundant for many years, and cooperates scientific principle
Utilization, be actively subject to research and innovation, found the steel slag pre-selection rotary screen and the bored slag pre-selection method of heat of a kind of more practicability.
Summary of the invention
Goal of the invention: the technique requirement in order to meet steel slag advanced treating, the present invention design a kind of steel slag pre-selection rotary screen
And the bored slag pre-selection method of heat.
Technical solution: in order to solve the above technical problems, steel slag provided by the invention preselects rotary screen, including rack, idler wheel
Frame and screen drum, the turning rolls are mounted in rack, and the screen drum is placed on turning rolls, and the screen drum has the knot of one
Structure is sequentially arranged feed inlet, reinforcing rib, the first sieve pore, the second sieve pore and discharge port along feedstock direction.
Specifically, the feed inlet of the screen drum has the changeover portion of larynx contracting shape, and the changeover portion is fixed with circular tube shaped main body
Connection, one end of the body transition section circumferentially cyclic reinforcing rib, the aperture of first sieve pore is less than the second sieve pore.
Specifically, first sieve pore is the square hole having a size of 7cm*7cm, and first sieve pore is along screen drum circumferential direction side
To 8 circles are disposed with, the position of the first sieve pore of adjacent turn is mutually staggered, in the axial direction the distance of circle where adjacent first sieve pore center
It is 14cm, the center of adjacent first sieve pore is away from being 14cm in the circumferential.
Specifically, second sieve pore is the square hole having a size of 25cm*25cm, and second sieve pore is along screen drum circumferential direction
Direction is disposed with 4 circles, and the position of the first sieve pore of adjacent turn mutually staggers, in the axial direction circle where adjacent second sieve pore center away from
From being 50cm, the center of adjacent second sieve pore is away from being 50cm in the circumferential.
Specifically, the internal diameter of the feed inlet is 138cm, and the diameter of the circular tube shaped main body and discharge port is 220cm.
Specifically, on turning rolls mounted in pairs idler wheel, the idler wheel is heavy duty pneumatic rubber tyre, guarantees that screen drum is outstanding
Floating stability and frictional force, the wheel hub of tire connect input shaft, tire rotation, and then the contact friction force for passing through surface of tyre
Screen drum linear velocity in the circumferential is assigned, screen drum is enabled to roll along its geometrical central axis.
Specifically, the turning rolls has two groups, first group of turning rolls be mounted on screen drum feed inlet and reinforcing rib it
Between, discharge port of second group of turning rolls close to screen drum.
Present invention simultaneously provides the bored slag pre-selection methods of heat of above equipment, using screen drum by steel slag rough segmentation at 0-60mm, 60-
250mm and material greater than tri- specifications of 250mm, the screen drum are sequentially arranged feed inlet, reinforcing rib, first along feedstock direction
Sieve pore, the second sieve pore and discharge port, first sieve pore are the square holes of 7cm*7cm, and second sieve pore is 25cm*25cm
Square hole；Material enters screen drum from feed inlet, and the rolling along screen drum is fed forward, and first passes through the first sieve pore and first exports small
Grain material, then exports medium grain material by the second sieve pore, and last a small amount of large granular materials are discharged from discharge port.
Specifically, the mounted in pairs heavy duty pneumatic rubber tyre idler wheel on turning rolls, the wheel hub of tire connect input shaft, wheel
Contact friction force when tire rotates through surface assigns the linear velocity in screen drum circumferential direction, and screen drum is enabled to roll along its geometrical central axis.This
The slag processing ability of the feeding warehouse of invention meets the processing capacity of 500,000 tons of steel slags of year at 100-150 ton/hours.
The utility model has the advantages that wear-resisting steel plate screen drum of the present invention using one, allows large size to roll using the suspension structure of rubber tyre
Bobbin rotation, helical feed simultaneously screen steel slag, and using specially designed sieve pore, the material of variable grain rank in steel slag is sorted
Out, convenient for executing subsequent advanced treatment process, and equipment component quantity is few, high reliablity, and overall structure is using mature
Welding and packaging technology product manufacturing can be completed, improve the manufacture efficiency of equipment, at the same be also convenient for scene processing and inspection
It repairs.By the pre-selection of this equipment, the material of different size in the bored slag of heat can be efficiently separated, it is regular to be provided after subsequent technique processing
Raw material, improve the efficiency of slag processing.
Except it is above-described present invention solves the technical problem that, constitute technical solution technical characteristic and by these technologies
Outside advantage brought by the technical characteristic of scheme.To keep the object of the invention, technical scheme and beneficial effects clearer, below will
In conjunction with the attached drawing in the embodiment of the present invention, to other for including in the other technologies problem of the invention that can solve, technical solution
The advantages of technical characteristic and these technical characteristics are brought does apparent, complete description, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.Therefore, below to the reality of the invention provided in the accompanying drawings
The detailed description for applying example is not intended to limit the range of claimed invention, but is merely representative of selected implementation of the invention
Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts
Every other embodiment, shall fall within the protection scope of the present invention.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention 1；
Fig. 2 is the main view of Fig. 1
Fig. 3 is the structural schematic diagram of roller in Fig. 2；
Fig. 4 is the left view of Fig. 3；
Fig. 5 is the A-A cross-sectional view of Fig. 4；
Fig. 6 is the structural schematic diagram of turning rolls in Fig. 1；
Fig. 7 is the working principle diagram of Fig. 6；
Fig. 8 is the structural schematic diagram of the embodiment of the present invention 2；
Fig. 9 is the axonometric drawing of Fig. 8；
In figure: feed inlet 201, reinforcing rib 202, the first sieve pore 203, the second sieve pore 204, discharge port 205, turning rolls 206, rack
207, idler wheel 208, feeding warehouse 101, oscillating feeder 102, vibration excitor 103, bracket 104, spring 105.
Specific embodiment
Embodiment 1:
The steel slag pre-selection rotary screen use state of the present embodiment is as depicted in figs. 1 and 2, including the rack being fixed on ground
207, and a pair of of the turning rolls 206 being mounted in rack 207, it is put above turning rolls 206 screen drum (roller), screen drum tool
There is integrated structure, is sequentially arranged feed inlet 201, reinforcing rib 202, the first sieve pore 203,204 and of the second sieve pore along feedstock direction
Discharge port 205.
As shown in Fig. 3, Fig. 4 and Fig. 5, screen drum is the charging by the integral structure of wear-resisting steel plate welding fabrication, with larynx contracting
Mouth 201 and circular tube shaped main body, the internal diameter of feed inlet 201 are 138cm, and the diameter of circular tube shaped main body is 220cm.Main body close into
One end of material mouth 201 is circumferentially used for the cyclic reinforcing rib 202 of structural strengthening and sizing, the square having a size of 7cm*7cm
First sieve pore 203, and the second sieve pore of square 204 and discharge port 205 having a size of 25cm*25cm.
As shown in Figure 6 and shown in Fig. 7, the idler wheel 208 of mounted in pairs on turning rolls 206, idler wheel 208 uses heavy duty pneumatic rubber
Rubber tire tire, guarantees stability and frictional force that screen drum suspends, and the wheel hub of tire connects input shaft, driven by motor (not shown)
Driven input shaft enables tire rotate, and then assigns screen drum linear velocity in the circumferential by the contact friction force of surface of tyre, enables screen drum
(circle of dotted line in figure) is rolled along its geometrical central axis.
Embodiment 2:
The present embodiment be by the pre-selection rotary screen of embodiment 1 and oscillation feed gear combined layout, as shown in Figure 8 and Figure 9, including
Pre-selection rotary screen in embodiment 1, and the feeding warehouse 101, spring 105 and the oscillating feeder 102 that are mounted on bracket 104,
There is vibration excitor 103 in 102 bottom of oscillating feeder, for quantitative be orderly transported to of the steel slag in feeding warehouse 101 to be preselected rolling
The feed inlet 201 of shaft screen.
In use, pre-selection rotary screen is used for steel slag rough segmentation into the first sieve pore of 0-60mm(), the second sieve pore of 60-250mm()
And the material of 250mm or more (discharge port) three specifications, screen drum are made of the wear-resisting steel plate of 20mm thickness, by four rubber wheel branch
Support, 2 22KW motors drive, and speed is adjustable.In the first sieve pore, the second sieve pore arranged beneath conveyer belt, arranged in discharge outlet
Bulk steel slag cuts workshop.
Material enters screen drum from feed inlet, and rolling is fed forward, and first passes through the first sieve pore and first exports small particles material, then
Medium grain material is exported by the second sieve pore, last a small amount of large granular materials are discharged from discharge port, can use gas flame cuttiug.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one
Connect to body；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be indirect by intermediary
It is connected, can be the connection inside two elements.For the ordinary skill in the art, on being understood with concrete condition
State the concrete meaning of term in the present invention.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that term " stem ", " tail portion ", " top ", " bottom ", " two
The orientation or positional relationship of the instructions such as side ", "vertical" be based on the orientation or positional relationship shown in the drawings or the invention produce
Product using when the orientation or positional relationship usually put, be merely for convenience of description of the present invention and simplification of the description, rather than indicate
Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand
For limitation of the present invention.In addition, term " first ", " second ", " third " etc. are only used for distinguishing description, and should not be understood as referring to
Show or imply relative importance.
The present invention preselects rotary screen for steel slag and the bored slag pre-selection method of heat provides a kind of completely new thinking and method, specifically
Realize that there are many method and the approach of the technical solution, the above is only the preferred embodiments provided in an illustrative manner.This field
Technical staff can expect many changes without deviating from the invention, change and substitute.It should be appreciated that practicing this hair
It can be using the various alternative solutions to embodiments of the invention described herein in bright process.Appended claims are intended to
It limits the scope of the invention, and therefore covers the method and structure in the range of these claims and its equivalent item.This implementation
The available prior art of each component part being not known in example is realized.
Claims (9)
1. a kind of steel slag preselects rotary screen, it is characterised in that: including rack, turning rolls and screen drum, the turning rolls is mounted on machine
On frame, the screen drum is placed on turning rolls, the screen drum have one structure, along feedstock direction be sequentially arranged feed inlet,
Reinforcing rib, the first sieve pore, the second sieve pore and discharge port.
2. steel slag according to claim 1 preselects rotary screen, it is characterised in that: the feed inlet of the screen drum has larynx contracting shape
Changeover portion, the changeover portion is fixedly connected with circular tube shaped main body, and one end of the body transition section is circumferentially cyclic annular to be reinforced
Muscle, the aperture of first sieve pore is less than the second sieve pore.
3. steel slag according to claim 2 preselects rotary screen, it is characterised in that: first sieve pore is having a size of 7cm*
The square hole of 7cm, first sieve pore are disposed with 8 circles along screen drum circumferential direction, and the position of the first sieve pore of adjacent turn is mutually wrong
It opens, the distance of circle is 14cm where adjacent first sieve pore center in the axial direction, and the center of adjacent first sieve pore is away from being in the circumferential
14cm。
4. steel slag according to claim 3 preselects rotary screen, it is characterised in that: second sieve pore is having a size of 25cm*
The square hole of 25cm, second sieve pore are disposed with 4 circles along screen drum circumferential direction, and the position of the first sieve pore of adjacent turn is mutually wrong
It opens, the distance of circle is 50cm where adjacent second sieve pore center in the axial direction, and the center of adjacent second sieve pore is away from being in the circumferential
50cm。
5. steel slag according to claim 4 preselects rotary screen, it is characterised in that: the internal diameter of the feed inlet is 138cm, institute
The diameter for stating circular tube shaped main body and discharge port is 220cm.
6. steel slag according to claim 1 preselects rotary screen, it is characterised in that: the mounted in pairs idler wheel on turning rolls, institute
Stating idler wheel is heavy duty pneumatic rubber tyre.
7. steel slag according to claim 6 preselects rotary screen, it is characterised in that: the turning rolls has two groups, first group
Turning rolls be mounted on screen drum between feed inlet and reinforcing rib, discharge port of second group of turning rolls close to screen drum.
8. a kind of bored slag pre-selection method of heat, it is characterised in that: using screen drum by steel slag rough segmentation at 0-60mm, 60-250mm and big
In the material of tri- specifications of 250mm, the screen drum is sequentially arranged feed inlet, reinforcing rib, the first sieve pore, the second sieve along feedstock direction
Hole and discharge port, first sieve pore are the square holes of 7cm*7cm, and second sieve pore is the square hole of 25cm*25cm；
Material enters screen drum from feed inlet, and the rolling along screen drum is fed forward, and first passes through the first sieve pore and first exports small particles material, then
Medium grain material is exported by the second sieve pore, last a small amount of large granular materials are discharged from discharge port.
9. the bored slag pre-selection method of heat according to claim 8, it is characterised in that: the mounted in pairs heavy duty pneumatic on turning rolls
Rubber tyre idler wheel, the wheel hub of tire connect input shaft, and contact friction force when tire rotates through surface assigns in screen drum circumferential direction
Linear velocity, enable screen drum along its geometrical central axis roll.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811417020.3A CN109382307A (en) | 2018-11-26 | 2018-11-26 | Steel slag preselects rotary screen and the bored slag pre-selection method of heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811417020.3A CN109382307A (en) | 2018-11-26 | 2018-11-26 | Steel slag preselects rotary screen and the bored slag pre-selection method of heat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109382307A true CN109382307A (en) | 2019-02-26 |
Family
ID=65429564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811417020.3A Pending CN109382307A (en) | 2018-11-26 | 2018-11-26 | Steel slag preselects rotary screen and the bored slag pre-selection method of heat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109382307A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109382175A (en) * | 2018-12-26 | 2019-02-26 | 南京芬钢环保科技有限公司 | Steel scrap autogenous grinding rolling barrel and autogenous grinding method for cleaning |
| CN117644027A (en) * | 2024-01-30 | 2024-03-05 | 云南凯瑞特工程机械设备有限公司 | Portable sand material screening device who carries on |
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|---|---|---|---|---|
| DE3839607A1 (en) * | 1988-11-24 | 1990-05-31 | Fritz Roedder | Method and device for dry-sieving |
| EP0521361A2 (en) * | 1991-06-29 | 1993-01-07 | LINTEC GmbH + Co. KG | Sieve drum |
| CN101653761A (en) * | 2009-09-14 | 2010-02-24 | 广东绿洲肥业有限公司 | Multistage granularity screening device for material |
| CN203711311U (en) * | 2014-02-22 | 2014-07-16 | 湖南九鼎科技（集团）永州鼎立饲料有限公司 | Feed processing precleaner |
| CN206390237U (en) * | 2016-12-20 | 2017-08-11 | 李红琴 | A kind of water chestnut sorting, transmission, cleaning equipment |
-
2018
- 2018-11-26 CN CN201811417020.3A patent/CN109382307A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3839607A1 (en) * | 1988-11-24 | 1990-05-31 | Fritz Roedder | Method and device for dry-sieving |
| EP0521361A2 (en) * | 1991-06-29 | 1993-01-07 | LINTEC GmbH + Co. KG | Sieve drum |
| CN101653761A (en) * | 2009-09-14 | 2010-02-24 | 广东绿洲肥业有限公司 | Multistage granularity screening device for material |
| CN203711311U (en) * | 2014-02-22 | 2014-07-16 | 湖南九鼎科技（集团）永州鼎立饲料有限公司 | Feed processing precleaner |
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| Title |
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| 王绍文: "《固体废弃物资源化技术与应用》", 30 June 2003, 冶金工业出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109382175A (en) * | 2018-12-26 | 2019-02-26 | 南京芬钢环保科技有限公司 | Steel scrap autogenous grinding rolling barrel and autogenous grinding method for cleaning |
| CN117644027A (en) * | 2024-01-30 | 2024-03-05 | 云南凯瑞特工程机械设备有限公司 | Portable sand material screening device who carries on |
| CN117644027B (en) * | 2024-01-30 | 2024-04-09 | 云南凯瑞特工程机械设备有限公司 | Portable sand material screening device who carries on |
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Application publication date: 20190226 |
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