CN106544455A - A kind of portable casting residue single treatment device and method - Google Patents
A kind of portable casting residue single treatment device and method Download PDFInfo
- Publication number
- CN106544455A CN106544455A CN201710066159.7A CN201710066159A CN106544455A CN 106544455 A CN106544455 A CN 106544455A CN 201710066159 A CN201710066159 A CN 201710066159A CN 106544455 A CN106544455 A CN 106544455A
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- China
- Prior art keywords
- water
- slag
- cover body
- slag ladle
- dedusting
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
The invention discloses a kind of portable casting residue single treatment device and method.Feature is to include driving, embrace tank car, slag ladle, mounting, loader, moving cart vehicle frame, overhead steel guide rail, water spraying mechanism and the wet stockyard of slag, overhead steel guide rail is crossed on mounting both sides, and two the length of overhead steel guide rail process the lateral length that station is located beyond slag ladle, overhead steel guide rail is provided with proximity switch；Driving, armful tank car are located at directly over moving cart vehicle frame, and moving cart vehicle frame is provided with the drive mechanism of reducing motor, running wheel, dedusting cover body and dedusting cover body, and running wheel is placed on overhead rail；Water spraying mechanism is placed in dust excluding hood body, and dedusting cover body is dropped to slag ladle above 100mm position by drive mechanism；The wet stockyard of slag is arranged on the mounting side that slag ladle processes station, and loader treats work on the wet stockyard of slag.The frequent operation pattern of conventional casting residue processing mode has been abandoned in the invention, and automaticity is higher, and environment protecting is also preferable.
Description
Technical field
The invention belongs to the technical field that metallurgical solid waste is utilized, more particularly to a kind of portable casting residue single treatment device
And method.
Background technology
2015, China's rustless steel crude steel yield reached 2156.22 × 104T/a, pre-capita consumption about 16kg, basically reaches
The per capita consuming level of developed country.The quantity of slag (including electric furnace, AOD furnace slag etc.) that 20% is produced according to every production 1t rustless steels is estimated
Calculate, China's stainless steel slag is 431.24 × 10 within 20154t/a.Tenor about 10%, wherein rustless steel in slag according to statistics
Containing valuable rare heavy metals such as nickel, chromium in slag, such as deal with improperly and be likely to result in serious environmental pollution, so reclaiming not
Metal in rust steel slag, realizes that stainless steel slag resource regeneration is the major issue that iron and steel enterprise faces.
At present, domestic main rustless steel manufacturer physical characteristics mainly according to rustless steel casting residue, are typically chosen heat
Bold and vigorous simply and easy treat mode, generally using the residual steel of disk absorption bulk after the process of casting residue hot application, remaining tailings is transported into steel
Store up slag muck field.This conventional processing mode has metal recovery rate low, the shortcomings of production environment difference, seriously annoyings many
Rustless steel manufacturer.
The content of the invention
In order to overcome the defect of prior art, it is an object of the invention to provide a kind of portable casting residue single treatment dress
Put, to rustless steel casting residue first using slag ladle fetch water cooling technique again slag pot tipping to wet slag place is carried out drying, magnetic separation, it is real
Show efficient, the environmentally friendly single treatment of rustless steel casting residue, be that good raw material basis has been established in the after-treatment of casting residue,
There are higher economic benefit and social benefit.
In order to realize above-mentioned goal of the invention, technical scheme below is present invention employs：
A kind of portable casting residue single treatment device, is characterized in including driving, embraces science and engineering at tank car, slag ladle, slag ladle
The mounting of position, loader, moving cart vehicle frame, the two wet stockyards of overhead steel guide rail, water spraying mechanism and slag be arrangeding in parallel, described two
The overhead steel guide rail be arrangeding in parallel is crossed on the mounting both sides that slag ladle processes station, and the length of two overhead steel guide rails exceeds slag ladle
The lateral length that station is located is processed, overhead steel guide rail is provided with proximity switch；The driving, armful tank car are little positioned at above-mentioned movement
Directly over vehicle carriage, the moving cart vehicle frame is provided with the driving of reducing motor, running wheel, dedusting cover body and dedusting cover body
Mechanism, running wheel are placed on overhead steel guide rail, for the movable of moving cart vehicle frame；Sprinkler with nozzle is set up
In above-mentioned dust excluding hood body, dedusting cover body is dropped to slag ladle above 50mm position by drive mechanism, and water for industrial use enters nozzle,
Realize that the dynamic of casting residue in slag ladle is fetched water cooling；The wet stockyard of the slag is arranged on the mounting side that slag ladle processes station, loads
Machine treats work on the wet stockyard of slag.
In above-mentioned portable casting residue single treatment device, optionally, the drive mechanism includes Electrohydraulic push rod, chain
Wheel, chain, double pulleies unit and single-sheaved block group, Electrohydraulic push rod drive sprocket are connected to dedusting around bearing action of tumbling, chain one end
On cover body, the other end is connected to tumbles on bearing, and chain is moved along double pulleies unit and single-sheaved block group.
In above-mentioned portable casting residue single treatment device, optionally, the dedusting cover body is provided with cover body dedusting
Pipe and the dedusting pipeline being connected with cover body dust removing tube, dedusting pipeline are connected with spray column, on dedusting pipeline are provided with electric butterfly valve.
In above-mentioned portable casting residue single treatment device, optionally, the dedusting pipeline includes two docking ports,
Cover body dust removing tube can be achieved a butt joint with docking port, be easy to appropriate design and the utilization in place.
In above-mentioned portable casting residue single treatment device, optionally, the water spraying mechanism includes feedwater piping, peace
The electric feed water valve being mounted on feedwater piping and nozzle, nozzle are fixed on dedusting covering on top, and feedwater piping is connected to nozzle, work
Industry water enters nozzle by feedwater piping, and nozzle early stage adopts 0.5m3The little water yields of/h, middle and late stage are fetched water using dynamic, are fetched water
0.5～1.0m of amount3/h。
In above-mentioned portable casting residue single treatment device, optionally, the angle of inclination immediately below being provided with of slag ladle
For 5% slope, and the gutter for being provided with cover plate being connected with Slope Facies is easy to casting residue to fetch water the spilling in cooling procedure
Water or steam condensate (SC) are discharged.
It is a further object of the present invention to provide a kind of casting residue single treatment method, using above-mentioned portable casting residue one
Secondary processing meanss, comprise the following steps：
(1) under the driving of reducing motor, running wheel is then travelled to wait moving cart vehicle frame along overhead steel guide rail
Position, driving a vehicle, it is in place on the mounting of slag ladle process station be hoisted to the slag ladle embraced on tank car；
(2) under the driving of reducing motor, running wheel is travelled to place's science and engineering moving cart vehicle frame along overhead steel guide rail
Position, moving cart vehicle frame are stopped at after touching proximity switch above process position；
(3) the Electrohydraulic push rod drive sprocket on moving cart vehicle frame is around bearing action of tumbling, chain along double pulleies unit and
Single-sheaved block group is moved, and dedusting cover body is dropped to slag ladle above 50mm position；
(4) electric feed water valve is adjusted, the nozzle that water for industrial use is entered on dedusting cover body by feedwater piping is realized in slag ladle
The dynamic of casting residue is fetched water cooling, and early stage adopts little water yield 0.5m3/ h fetches water, and middle and late stage adopts the water yield for 0.5～1.0m3/ h beats
Water, observation slag ladle overflow water are fetched water system determining slag ladle：Water overflows, and reduces or stop to fetch water；Water does not overflow, then continue to beat
Water；The spilling water or steam condensate (SC) that casting residue is fetched water in cooling procedure is drained into and is provided with lid along the slope that angle of inclination is 5%
In the gutter of plate；
(5), after moving cart vehicle frame and dedusting cover body are in place, first open and process the corresponding electrical dust-removing butterfly valve in position, in slag ladle
Casting residue fetch water cooling procedure generation dust-laden steam under the negative pressure of dedusting fan Jing cover bodies dust removing tube, dedusting pipeline to spray
It is up to standard after tower process, discharge from chimney；
(6) fetch water 24h, and electric feed water valve is closed, and dedusting cover body rises, and subsequently, moving cart vehicle frame is moved back to wait position, car
Stop at gear；Driving is embraced a tank car and the slag ladle after process is transported to wet slag stockyard is tumbled, and wet slag drainage, dries 24h, OK
Car carries electromagnetic disc and selects big lumpiness residual steel, and remaining casting residue is then transported into after-treatment process area by loader.
Compared with prior art, beneficial effect is：
1) invention adopts wet treatment mode, it is to avoid the generation of dry ash, preferable to production environment；
2) the frequent operation pattern of conventional casting residue processing mode has been abandoned in the invention, and automaticity is higher, environmental protection effect
Fruit is also preferable.
Description of the drawings
Technical scheme is described in further detail below with reference to drawings and Examples, but should
Know, these accompanying drawings are only designed for task of explanation, therefore not as the restriction of the scope of the invention.Additionally, removing non-specifically
Point out, these accompanying drawings are meant only to conceptually illustrate rail configurations described herein, without being drawn to scale.
Fig. 1 is the structural representation of movable type casting residue single treatment device of the invention；
Fig. 2 is Fig. 1 along line A-A sectional view；
Fig. 3 is Fig. 1 along line B-B sectional view.
In figure：1- tracks, 2- reducing motors, 3- running wheels, 4- dedusting pipelines, 5- electric butterfly valves, 6- spray columns, 7- are removed
Dirt blower fan, 8- chimneys, 9- embrace tank car, 10- double pulleies units, 11- feedwater pipings, 12- and tumble bearing, 13- cover body dust removing tubes, 14-
Chain, 15- nozzles, 16- single-sheaved block groups, 17- dedusting cover bodies, 18- moving cart vehicle frames, 19- mountings, 20- slag ladles, 21- driving,
22- loaders, 23- sprocket wheels, 24- Electrohydraulic push rods, the overhead steel guide rails of 25-, 26- cover plates, 27- gutters, 28- electromagnetic disc, 29- cars
Gear, 30- proximity switches, 31- slopes.
Specific embodiment
Firstly, it is necessary to explanation, below will illustrate movable type casting residue of the invention by way of example and once locate
Concrete guide rail, feature and advantage of device etc. are managed, but all of description is intended merely to what is illustrated, and should not be understood
It is that any restriction is formed to the present invention.Additionally, any single skill in mentioned each embodiment being herein described by or implying
Art feature, or shown or implicit any single technical characteristic in the drawings, still can these technical characteristics (or its
Equivalent) between proceed combination in any or delete, may there is no the present invention's for directly referring to herein so as to obtain
More other embodiments.
Incorporated by reference to referring to figs. 1 to Fig. 3, below the embodiment that is just given by this come to movable type casting residue one of the invention
Secondary processing meanss and method are illustrative.
As shown in Figure 1 to Figure 3, a kind of portable casting residue single treatment device include driving 21, embrace tank car 9, slag ladle 20,
The overhead steel guide rail 25, sprinkler that the mounting 19 of slag ladle process station, loader 22, moving cart vehicle frame 18, two be arranged in parallel
Structure and the wet stockyard of slag (not marking in figure), the described two overhead steel guide rails 25 be arrangeding in parallel are crossed on the mounting that slag ladle processes station
19 both sides, and the length of two overhead steel guide rails 25 processes the lateral length that station is located beyond slag ladle, sets on overhead steel guide rail 25
There is proximity switch 30；The driving 21, armful tank car 9 are located at directly over above-mentioned moving cart vehicle frame 18, the moving cart vehicle frame
18 drive mechanisms for being provided with reducing motor 2, running wheel 3, dedusting cover body 17 and dedusting cover body, running wheel 3 is placed in overhead
On steel guide rail 25, for the movable of moving cart vehicle frame 18；Water spraying mechanism with nozzle 15 is placed in above-mentioned dust excluding hood
In body 17, dedusting cover body is dropped to slag ladle above 50mm position by drive mechanism, and water for industrial use enters nozzle 15, realizes in slag ladle
The dynamic of casting residue is fetched water cooling；The wet stockyard of the slag is arranged on 19 side of mounting that slag ladle processes station, and loader is in slag
On wet stockyard, work is treated.
From figure 2 it can be seen that the drive mechanism includes Electrohydraulic push rod 24, sprocket wheel 23, chain 14,10 and of double pulleies unit
Single-sheaved block group 16, around 12 action of bearing of tumbling, chain one end is connected on dedusting cover body 17 24 drive sprocket of Electrohydraulic push rod, another
End is connected to tumbles on bearing 12, and chain 14 is moved along double pulleies unit 10 and single-sheaved block group 16.
Further, as can be seen that the dedusting cover body 17 is provided with cover body dust removing tube 13 and and cover body from Fig. 1, Fig. 2
The dedusting pipeline 4 of dust removing tube connection, dedusting pipeline are connected with spray column 6, and electric butterfly valve 5 is provided with dedusting pipeline 4.
Further, from figure 1 it appears that the dedusting pipeline 4 includes two docking ports, cover body dust removing tube 13 can be with
Achieve a butt joint with docking port, be easy to appropriate design and the utilization in place.
Further, the water spraying mechanism includes feedwater piping 11, the electric feed water valve on feedwater piping (in figure
Do not mark) and nozzle 15, nozzle 15 is fixed at the top of dedusting cover body 17, and feedwater piping 11 is connected to nozzle 15, and water for industrial use leads to
Feedwater piping is crossed into nozzle 15, nozzle early stage adopts 0.5m3The little water yields of/h, middle and late stage are fetched water using dynamic, and the amount of fetching water 0.5～
1.0m3/h。
The spilling water or steam condensate (SC) fetched water for the ease of casting residue in cooling procedure is discharged, in being just provided with for slag ladle 20
Inclined downward angle is 5% slope 31, and the gutter 27 for being provided with cover plate 26 being mutually connected with slope 31.
It is a further object of the present invention to provide a kind of casting residue single treatment method, using above-mentioned portable casting residue one
Secondary processing meanss, comprise the following steps：
(1) under the driving of reducing motor 2, running wheel 3 is then travelled moving cart vehicle frame 18 along overhead steel guide rail 25
The slag ladle 20 embraced on tank car 9 is hoisted to into slag ladle and processes in place on the mounting 19 of station to position, driving 21 is waited；
(2) moving cart vehicle frame 18 is under the driving of reducing motor 2, running wheel 3 along overhead steel guide rail 25 travel to
Station is processed, moving cart vehicle frame 18 is stopped at after touching proximity switch 30 above process position；
(3) 24 drive sprocket of Electrohydraulic push rod on moving cart vehicle frame 18 is around 12 action of bearing of tumbling, and chain 14 is along double
Assembly pulley 10 and single-sheaved block group 16 are moved, and dedusting cover body 17 is dropped to more than 20 50mm positions of slag ladle；
(4) electric feed water valve (not marking in figure) is adjusted, water for industrial use is entered on dedusting cover body 17 by feedwater piping 11
Nozzle 15, realize that the dynamic of casting residue in slag ladle is fetched water cooling, early stage adopts little water yield 0.5m3/ h fetches water, and middle and late stage is adopted
The water yield is 0.5～1.0m3/ h fetches water, and observation slag ladle overflow water is fetched water system determining slag ladle：Water overflows, and reduces or stop to beat
Water；Water does not overflow, then continue to fetch water；The spilling water or steam condensate (SC) that casting residue is fetched water in cooling procedure along angle of inclination is
5% slope 31, drains into and is provided with the gutter 27 of cover plate 26；
(5), after moving cart vehicle frame 18 and dedusting cover body 17 are in place, first open and process the corresponding electric butterfly valve 5 in position, slag ladle
Interior casting residue fetch water cooling procedure generation dust-laden steam under the negative pressure of dedusting fan 7 Jing cover bodies dust removing tube 13, dedusting pipeline 4
It is up to standard to the process of spray column 6, discharge from chimney 8；
(6) fetch water 24h, and electric feed water valve (not marking in figure) is closed, and dedusting cover body 17 rises, subsequently, moving cart car
Frame 18 is moved back to wait position, stops at car bumper 29；Slag ladle 20 after process is transported to wet slag stockyard and is carried out by driving 21 or an armful tank car 9
Tumble, wet slag drainage, dry 24h, driving carries electromagnetic disc 28 and selects big lumpiness residual steel, remaining casting residue then passes through loader
It is transported into after-treatment process area.
Below only by way of example come elaborate the present invention portable casting residue single treatment device and method, these
Individual example is only used for the principle and embodiments thereof of the explanation present invention, rather than limitation of the present invention, without departing from the present invention's
In the case of spirit and scope, those skilled in the art can also make various modifications and improvement.Therefore, the technology of all equivalents
Scheme all should belong to scope of the invention and be limited by every claim of the present invention.
Claims (7)
1. a kind of portable casting residue single treatment device, it is characterised in which includes driving a vehicle (21), embraces tank car (9), slag ladle
(20), the mounting (19) of slag ladle process station, loader (22), moving cart vehicle frame (18), the two overhead steel be arrangeding in parallel are led
Rail (25), water spraying mechanism and the wet stockyard of slag, the described two overhead steel guide rails (25) be arrangeding in parallel are crossed on slag ladle and process station
Mounting (19) both sides, and the length of two overhead steel guide rails (25) processes the lateral length that station is located beyond slag ladle, overhead steel is led
Rail (25) is provided with proximity switch (30)；The driving (21), an armful tank car (9) are just gone up positioned at above-mentioned moving cart vehicle frame (18)
Side, the moving cart vehicle frame (18) are provided with reducing motor (2), running wheel (3), dedusting cover body (17) and dedusting cover body
Drive mechanism, running wheel (3) are placed on overhead steel guide rail (25), for the movable of moving cart vehicle frame (18)；Have
The water spraying mechanism of nozzle (15) is placed in above-mentioned dedusting cover body (17), and dedusting cover body is dropped to more than slag ladle by drive mechanism
50mm positions, water for industrial use enter nozzle (15), realize that the dynamic of casting residue in slag ladle is fetched water cooling；The wet stockyard of the slag is arranged
Mounting (19) side of station is processed in slag ladle, loader (22) treats work on the wet stockyard of slag.
2. portable casting residue single treatment device according to claim 1, it is characterised in that the drive mechanism includes
Electrohydraulic push rod (24), sprocket wheel (23), chain (14), double pulleies unit (10) and single-sheaved block group (16), Electrohydraulic push rod (24) drive chain
Around bearing of tumbling (12) action, chain one end is connected on dedusting cover body (17) wheel, and the other end is connected on bearing of tumbling (12),
Chain (14) is moved along double pulleies unit (10) and single-sheaved block group (16).
3. portable casting residue single treatment device according to claim 2, it is characterised in that the dedusting cover body (17)
The dedusting pipeline (4) for being provided with cover body dust removing tube (13) and being connected with cover body dust removing tube, dedusting pipeline are connected with spray column (6),
Electric butterfly valve (5) is provided with dedusting pipeline (4).
4. portable casting residue single treatment device according to claim 3, it is characterised in that the dedusting pipeline (4)
Including two docking ports, cover body dust removing tube (13) is achieved a butt joint with docking port.
5. portable casting residue single treatment device according to claim 4, it is characterised in that the water spraying mechanism includes
Feedwater piping (11), the electric feed water valve on feedwater piping and nozzle (15), nozzle (15) are fixed on dedusting cover body
(17) at the top of, feedwater piping (11) is connected to nozzle (15), and water for industrial use enters nozzle (15), nozzle early stage by feedwater piping
Using 0.5m3The little water yields of/h, middle and late stage are fetched water using dynamic, 0.5～1.0m of the amount of fetching water3/h。
6. portable casting residue single treatment device according to claim 5, it is characterised in that in being provided with for slag ladle (20)
Immediately below angle of inclination be 5% slope (31), and the gutter (27) for being provided with cover plate (26) being mutually connected with slope (31).
7. a kind of casting residue single treatment method, using the portable casting residue single treatment device described in claim 6, which is special
Levy and be, comprise the following steps：
(1), under the driving of reducing motor (2), running wheel (3) is then along overhead steel guide rail (25) for moving cart vehicle frame (18)
Travel to wait position, the slag ladle (20) embraced on tank car (9) is hoisted to slag ladle and is just processed on the mounting (19) of station by driving (21)
Position；
(2) moving cart vehicle frame (18) is under the driving of reducing motor (2), running wheel (3) along overhead steel guide rail (25) OK
Sail to station is processed, moving cart vehicle frame (18) is stopped at after touching proximity switch (30) above process position；
(3) Electrohydraulic push rod (24) drive sprocket on moving cart vehicle frame (18) is around bearing of tumbling (12) action, chain (14) edge
Double pulleies unit (10) and single-sheaved block group (16) motion, dedusting cover body (17) is dropped to into slag ladle (20) above 50mm position；
(4) electric feed water valve is adjusted, water for industrial use passes through feedwater piping (11) into the nozzle (15) on dedusting cover body (17), real
In existing slag ladle, the dynamic of casting residue is fetched water cooling, and early stage is using little water yield 0.5m3/ h fetches water, and middle and late stage adopts the water yield for 0.5～
1.0m3/ h fetches water, and observation slag ladle overflow water is fetched water system determining slag ladle：Water overflows, and reduces or stop to fetch water；Water does not overflow,
Then continue to fetch water；The spilling water or steam condensate (SC) that casting residue is fetched water in cooling procedure is along the slope that angle of inclination is 5%
(31), drain into and be provided with the gutter (27) of cover plate (26)；
(5), after moving cart vehicle frame (18) and dedusting cover body (17) are in place, first open and process the corresponding electric butterfly valve (5) in position, slag
In tank casting residue fetch water cooling procedure generation dust-laden steam under the negative pressure of dedusting fan (7) Jing cover bodies dust removing tube (13), remove
Dirt pipeline (4) is up to standard to spray column (6) process, discharges from chimney (8)；
(6) fetch water 24h, and electric feed water valve is closed, and dedusting cover body (17) rises, and subsequently, moving cart vehicle frame (18) is moved back to wait
Position, car bumper (29) place stops；Slag ladle (20) after process is transported to wet slag stockyard and is inclined by driving (21) or an armful tank car (9)
Turn over, wet slag drainage, dry 24h, driving carries electromagnetic disc (28) and selects big lumpiness residual steel, remaining casting residue then passes through loader
(22) it is transported into after-treatment process area.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710066159.7A CN106544455B (en) | 2017-02-06 | 2017-02-06 | A kind of movable type casting residue single treatment device and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710066159.7A CN106544455B (en) | 2017-02-06 | 2017-02-06 | A kind of movable type casting residue single treatment device and method |
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| CN106544455B CN106544455B (en) | 2018-06-29 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106944450A (en) * | 2017-04-19 | 2017-07-14 | 中冶华天南京工程技术有限公司 | Tear the movable dust removal system and technique of tank open based on steel-making |
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| Publication number | Publication date |
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| CN106544455B (en) | 2018-06-29 |
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