CN113566586A - Automatic slag removing device of smelting furnace - Google Patents
Automatic slag removing device of smelting furnace Download PDFInfo
- Publication number
- CN113566586A CN113566586A CN202110859032.7A CN202110859032A CN113566586A CN 113566586 A CN113566586 A CN 113566586A CN 202110859032 A CN202110859032 A CN 202110859032A CN 113566586 A CN113566586 A CN 113566586A
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- Prior art keywords
- stirring
- furnace
- deslagging
- blade
- stirring shaft
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- 238000003723 Smelting Methods 0.000 title claims abstract description 21
- 239000002893 slag Substances 0.000 title claims description 33
- 238000003756 stirring Methods 0.000 claims abstract description 113
- 239000007788 liquid Substances 0.000 claims abstract description 24
- 238000003860 storage Methods 0.000 claims abstract description 11
- 238000007599 discharging Methods 0.000 claims description 25
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 238000007670 refining Methods 0.000 abstract description 7
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 abstract description 2
- 229910052782 aluminium Inorganic materials 0.000 description 23
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 22
- 238000000034 method Methods 0.000 description 8
- 238000007872 degassing Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000013049 sediment Substances 0.000 description 5
- 229910000838 Al alloy Inorganic materials 0.000 description 4
- 239000004411 aluminium Substances 0.000 description 3
- 239000000274 aluminium melt Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000010009 beating Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 101100298222 Caenorhabditis elegans pot-1 gene Proteins 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/15—Tapping equipment; Equipment for removing or retaining slag
- F27D3/1545—Equipment for removing or retaining slag
- F27D3/1554—Equipment for removing or retaining slag for removing the slag from the surface of the melt
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention relates to the field of metal smelting preparation, in particular to an automatic deslagging device of a smelting furnace, which comprises a liquid storage tank, a first discharge channel, a deslagging furnace, a stirring mechanism, a second discharge channel and a third discharge channel; a stirring mechanism is arranged on the deslagging furnace, the stirring mechanism comprises a first stirring piece, a second stirring piece, a first bearing frame and a gearbox, the first stirring piece comprises a first stirring shaft and a first stirring blade, the second stirring piece comprises a second stirring shaft and a second stirring blade, and the second stirring shaft is rotatably connected with the first bearing frame; a side wall opening is arranged at the upper part of the deslagging furnace, the feed end of the third discharge channel is communicated with the bottom of the deslagging furnace, and the feed end of the second discharge channel is communicated with the upper part of the deslagging furnace through the side wall opening; in the vertical direction, the upper portion of the second agitating blade is not lower than the lowest point of the side wall opening, and the lower portion of the second agitating blade is not higher than the lowest point of the side wall opening. Realize continuous automatic refining slagging-off, reduce intensity of labour, promote the operating efficiency.
Description
Technical Field
The invention relates to the field of metal smelting preparation, in particular to the technical field of structures of automatic deslagging devices of smelting furnaces.
Background
In the process of smelting aluminum alloy, after aluminum ingots and aluminum ores are melted into liquid at high temperature, the molten liquid is required to be refined, degassed, purified and deslagged.
At present, most deslagging operations are carried out by degassing and refining deslagging through a single furnace, and finally manual deslagging operations are carried out, so that although burning loss can be reduced, certain limitation is brought to continuous and high-yield operation efficiency of aluminum alloy processing; and often the degassing and refining deslagging of a single furnace need to be matched with a plurality of people, so that the labor cost is increased.
Disclosure of Invention
The invention aims to provide an automatic slag removing device for a smelting furnace, which collects and discharges floated slag ash by utilizing centrifugal blades, can realize continuous automatic refining and slag removal, does not need excessive manual intervention, reduces the labor intensity and improves the operation efficiency.
In order to solve the technical problems, the invention adopts the following technical scheme:
the automatic deslagging device of the smelting furnace comprises a liquid storage tank, a first discharge channel, a deslagging furnace, a stirring mechanism, a second discharge channel and a third discharge channel; the feeding end of the first discharging channel is communicated with the discharging end of the liquid storage tank, and the discharging end of the first discharging channel is communicated with the feeding end of the deslagging furnace; the slag removing furnace is provided with a stirring mechanism, the stirring mechanism comprises a first stirring piece, a second stirring piece, a first bearing frame and a gearbox, the first stirring piece comprises a first stirring shaft and a first stirring blade, the second stirring piece comprises a second stirring shaft and a second stirring blade, the second stirring shaft is rotatably connected with the first bearing frame, the second stirring blade is arranged on the outer side wall of the bottom of the second stirring shaft, the first stirring shaft penetrates through the second stirring shaft and is rotatably connected with the second stirring shaft, the first stirring shaft and the second stirring shaft are coaxially arranged, and the bottom of the first stirring shaft is provided with the first stirring blade; a gearbox is arranged on the first bearing frame and is in transmission connection with the second stirring shaft; the far end of the second stirring blade is close to the inner wall of the deslagging furnace; a side wall opening is arranged at the upper part of the deslagging furnace, the feed end of the third discharge channel is communicated with the bottom of the deslagging furnace, and the feed end of the second discharge channel is communicated with the upper part of the deslagging furnace through the side wall opening; in the vertical direction, the upper portion of the second agitating blade is not lower than the lowest point of the side wall opening, and the lower portion of the second agitating blade is not higher than the lowest point of the side wall opening.
Furthermore, a slope surface is arranged inside one end, close to the deslagging furnace, of the second discharging channel, and the height of the slope surface is gradually increased along the direction far away from the inside of the deslagging furnace.
Further, the second stirring leaf includes centrifugal blade and notch plate, and the symmetry sets up a plurality of centrifugal blades on second pivot lateral wall, sets up the notch plate on centrifugal blade's upper portion, and the concave surface of notch plate sets up along centrifugal blade's direction of rotation.
Further, the upper portion of the concave plate is higher than the height of the slope surface.
Further, a combustion burner is arranged above the slope surface.
Furthermore, a grate plate is arranged at the communication position of the third discharging channel and the slag removing furnace.
Compared with the prior art, the invention can at least achieve one of the following beneficial effects:
1. utilize centrifugal blade to collect the sediment ash that floats and discharge, and can realize continuous automatic refining slagging-off, need not too much human intervention, reduce intensity of labour, promote the operating efficiency.
2. The slope is arranged, so that the loss of the aluminum liquid is reduced.
3. The concave plate is arranged, so that the slag raking effect is improved.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of another aspect of the present invention.
FIG. 3 is a schematic structural view of an embodiment of the second stirring member of the present invention.
FIG. 4 is a schematic view of the second stirring member and the side wall opening from another perspective in the present invention.
In the figure: 1-a liquid storage tank; 21-a first outlet channel; 22-a second outlet channel; 23-a third discharge channel; 3-deslagging furnace; 31-sidewall openings; 32-grate plate; 4-a stirring mechanism; 41-a first stirring member; 411-first stirring shaft; 412-a first stirring blade; 42-a second stirring member; 421-a second stirring shaft; 422-second stirring blade; 4221-centrifuge blades; 43-a first carrier; 44-a gearbox; 4222-concave plate; 100-aluminum solution.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1:
as shown in fig. 1-4, the automatic slag removing device of the smelting furnace comprises a liquid storage tank 1, a first discharging channel 21, a slag removing furnace 3, a stirring mechanism 4, a second discharging channel 22 and a third discharging channel 23; the feeding end of the first discharging channel 21 is communicated with the discharging end of the liquid storage tank 1, and the discharging end of the first discharging channel 21 is communicated with the feeding end of the slag removing furnace 3; a stirring mechanism 4 is arranged on the deslagging furnace 3, the stirring mechanism 4 comprises a first stirring piece 41, a second stirring piece 42, a first bearing frame 43 and a gearbox 44, the first stirring piece 41 comprises a first stirring shaft 411 and a first stirring blade 412, the second stirring piece 42 comprises a second stirring shaft 421 and a second stirring blade 422, the second stirring shaft 421 is rotatably connected with the first bearing frame 43, the second stirring blade 422 is arranged on the outer side wall of the bottom of the second stirring shaft 421, the first stirring shaft 411 penetrates through the second stirring shaft 421 and is rotatably connected with the second stirring shaft, the first stirring shaft 411 and the second stirring shaft 421 are coaxially arranged, and the first stirring blade 412 is arranged at the bottom of the first stirring shaft 411; a gearbox 44 is arranged on the first bearing frame 43, and the gearbox 44 is in transmission connection with the second stirring shaft 421; the far end of the second stirring blade 422 is close to the inner wall of the deslagging furnace 3; a side wall opening 31 is arranged at the upper part of the deslagging furnace 3, the feed end of the third discharge channel 23 is communicated with the bottom of the deslagging furnace 3, and the feed end of the second discharge channel 22 is communicated with the upper part of the deslagging furnace 3 through the side wall opening 31; in the vertical direction, the upper portion of the second agitating blade 422 is not lower than the lowest point of the side wall opening 31, and the lower portion of the second agitating blade 422 is not higher than the lowest point of the side wall opening 31.
When the device works, the proper liquid storage amount is ensured in the liquid storage tank 1, and the material is continuously fed into the deslagging furnace 3 through the first discharge channel 21; continuously adding a refining agent/deslagging agent into the deslagging furnace 3, driving a gearbox 44 to work by a driving motor, driving the first stirring shaft 411 to rotate rapidly and driving the second stirring shaft 421 to rotate slowly (or driving the two gearboxes respectively to realize differential rotation) by the gearbox 44 (through bevel gear transmission), and rapidly rotating the first stirring shaft 411 and the first stirring blade 412 to rapidly stir the molten liquid in the deslagging furnace 3, so that the refining/deslagging effect is improved; the formed slag ash floats to the surface of the aluminum liquid through buoyancy; the second stirring shaft 421 and the second stirring blade 422 rotate at a slow speed, so that dross on the surface of the aluminum liquid is beaten to the outer side (close to the inner wall of the deslagging furnace 3), and by continuously stirring and raking the second stirring blade 422, as much dross as possible is beaten into the second discharging channel 22 through the side wall opening 31 and discharged, thereby realizing continuous deslagging operation; preferably, in order to ensure that the scum can be discharged in time, the aluminum liquid in the deslagging furnace 3 needs to be kept at a certain liquid level as far as possible, the discharge amount can be adjusted by arranging the gate plate at the third discharge channel 23, and the feeding amount of the deslagging furnace 3 is adjusted in a matching manner to control, so that the liquid level of the molten liquid in the deslagging furnace 3 is basically kept unchanged, and the continuous deslagging operation efficiency and effect are improved.
Preferably, first (mixing) shaft 411 is hollow rotating shaft to set up the degasification passageway (aluminium alloy melt degasification (mixing) shaft is prior art, does not describe here for carry out the degasification to the melt that takes off in the slag furnace 3 and handle the process saving, promote the operating efficiency.
Preferably, when the lower portion of the second stirring blade 422 is not higher than the lowest point of the side wall opening 31, the bottom portion of the second stirring blade 422 is immersed in the aluminum melt, and when the second stirring blade 422 rotates, the skimming and discharging effect on the dross can be improved, but the protective film on the surface of the aluminum melt is damaged, so that the burning loss is increased; the other implementation mode is as follows: the lower portion of the second stirring blade 422 is higher than the lowest point of the side wall opening 31, and at this time, the bottom of the second stirring blade 422 is made to contact with the surface of the molten aluminum as less as possible and contact with dross (the height of the dross is higher than the height of the surface of the molten aluminum by a certain distance), so that the second stirring blade 422 reduces damage to the protective film on the surface of the molten aluminum, but the dross skimming efficiency is reduced, and the dross cannot be timely and efficiently discharged. Therefore, one of the two ways can be selected according to the operation efficiency and the subsequent aluminum ash treatment process as the embodiment of the patent application.
Preferably, this patent application aims at solving the concise degasification slagging-off operating efficiency problem of aluminum alloy melt among the continuous production process, consequently need guarantee to have sufficient material in the liquid storage pot 1, and to adopting stirring vane to take off the scaling loss increase problem that the sediment leads to, can carry out "aluminium ash is handled" through setting up the sediment ash after collecting and retrieve again and solve.
Example 2:
as shown in fig. 1-4, the second outlet channel configuration is optimized for the above embodiment.
In the automatic slag removing device of the smelting furnace, the slope surface 221 is arranged inside one end, close to the slag removing furnace 3, of the second discharging channel 22, and the height of the slope surface 221 is gradually increased along the direction far away from the inside of the slag removing furnace 3. Through setting up slope 221, when the dross carried aluminium melt and got into slope 221, because the inclination of slope for aluminium melt can flow back to in the slagging-off stove 3, reduce the consumption of taking off the sediment in-process aluminium, practice thrift the cost greatly (in the continuous operation in-process, the temperature of the inner wall of slagging-off stove and lateral wall opening 31 department is all higher relatively, provides high temperature environment support for the backward flow of aluminium melt).
Example 3:
as shown in fig. 1 to 4, the second stirring vane structure is optimized for the above embodiment.
In the automatic slag removing device for the smelting furnace, the second stirring blade 422 comprises a centrifugal blade 4221 and a concave plate 4222, the plurality of centrifugal blades 4221 are symmetrically arranged on the outer side wall of the second rotating shaft 421, the concave plate 4222 is arranged at the upper part of the centrifugal blade 4221, and the concave surface of the concave plate 54 is arranged along the rotating direction of the centrifugal blade 4221. The centrifugal blades 4221 are beneficial to beating scum to the inner wall of the deslag furnace 3 through centrifugal force generated by rotation, and the concave plates 4222 are arranged, so that the amount of the scum collected by the second stirring blades 422 in the rotating process can be increased, the scum is reduced, the scum is excessive, the scum is leaked from the top of the centrifugal blades 4221, and the scum removing effect is improved.
Example 4:
as shown in fig. 1 to 4, the second stirring vane structure is optimized for the above embodiment.
The upper part of the concave plate 4222 in the automatic slag removing device of the smelting furnace is higher than the height of the slope surface 221. The height of the concave plate 4222 is higher than that of the slope surface 221, so that the aluminum slag is extruded through the slope surface 221, and the discharging operation is completed.
Preferably, along the rotation direction of second pivot 421, lateral wall opening 31 is the slope upwards to set up, and the lateral wall opening 31 of slope setting can increase second stirring leaf 422 rotation in-process and the "contact" time of lateral wall opening, promotes the aluminium sediment volume of once beating into in lateral wall opening 31 promptly to the slagging-off efficiency has been promoted.
Example 5:
as shown in fig. 1 to 4, for the above embodiment, the present embodiment optimizes the aluminum liquid recovery structure.
In the automatic slag removing device of the smelting furnace, a combustion flame nozzle 6 is arranged above the slope surface 221. The combustion flame jet nozzle 6 is connected with natural gas and performs blowing type combustion above the position near the slope surface 221, so that aluminum liquid carried in aluminum slag can be heated, and the backflow recovery amount of the aluminum liquid is increased.
Example 6:
as shown in fig. 1 to 4, the present embodiment optimizes the filtering structure for the above-described embodiment.
In the automatic slag removing device of the smelting furnace, a grate plate 32 is arranged at the communication part of the third discharging channel 23 and the slag removing furnace 3. The grate plate 32 is arranged, so that the influence of the pressure formed by the rotational flow of the aluminum slag on the slag removal effect caused by the fact that the aluminum slag enters the third discharging channel 23 is reduced.
Preferably, the discharge amount of the slagging furnace 3 can be adjusted by setting the throughput of the grid plate 32.
Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure. More specifically, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.
Claims (6)
1. Automatic slagging-off device of smelting furnace, its characterized in that: comprises a liquid storage tank (1), a first discharge channel (21), a deslagging furnace (3), a stirring mechanism (4), a second discharge channel (22) and a third discharge channel (23); the feeding end of the first discharging channel (21) is communicated with the discharging end of the liquid storage tank (1), and the discharging end of the first discharging channel (21) is communicated with the feeding end of the deslagging furnace (3); the slag removing furnace is characterized in that a stirring mechanism (4) is arranged on the slag removing furnace (3), the stirring mechanism (4) comprises a first stirring part (41), a second stirring part (42), a first bearing frame (43) and a gearbox (44), the first stirring part (41) comprises a first stirring shaft (411) and a first stirring blade (412), the second stirring part (42) comprises a second stirring shaft (421) and a second stirring blade (422), the second stirring shaft (421) is rotatably connected with the first bearing frame (43), the second stirring blade (422) is arranged on the outer side wall of the bottom of the second stirring shaft (421), the first stirring shaft (411) penetrates through the second stirring shaft (421) and is rotatably connected with the second stirring shaft, the first stirring shaft (411) and the second stirring shaft (421) are coaxially arranged, and the first stirring blade (412) is arranged at the bottom of the first stirring shaft (411); a gearbox (44) is arranged on the first bearing frame (43), and the gearbox (44) is in transmission connection with the second stirring shaft (421); the far end of the second stirring blade (422) is close to the inner wall of the deslagging furnace (3); a side wall opening (31) is arranged at the upper part of the deslagging furnace (3), the feed end of the third discharge channel (23) is communicated with the bottom of the deslagging furnace (3), and the feed end of the second discharge channel (22) is communicated with the upper part of the deslagging furnace (3) through the side wall opening (31); in the vertical direction, the upper portion of the second agitating blade (422) is not lower than the lowest point of the side wall opening (31), and the lower portion of the second agitating blade (422) is not higher than the lowest point of the side wall opening (31).
2. The automatic slag removing device of a smelting furnace according to claim 1, characterized in that: a slope surface (221) is arranged in one end, close to the deslagging furnace (3), of the second discharging channel (22), and the height of the slope surface (221) is gradually increased along the direction far away from the inside of the deslagging furnace (3).
3. The automatic slag removing device of a smelting furnace according to claim 1, characterized in that: the second stirring blade (422) comprises a centrifugal blade (4221) and a concave plate (4222), the plurality of centrifugal blades (4221) are symmetrically arranged on the outer side wall of the second rotating shaft (421), the concave plate (4222) is arranged on the upper portion of the centrifugal blade (4221), and the concave surface of the concave plate (4222) is arranged along the rotating direction of the centrifugal blade (4221).
4. The automatic slag removing device of a smelting furnace according to claim 3, characterized in that: the upper part of the concave plate (4222) is higher than the height of the slope surface (221).
5. The automatic slag removing device of a smelting furnace according to claim 2, characterized in that: and a combustion flame nozzle (6) is arranged above the slope surface (221).
6. The automatic slag removing device of a smelting furnace according to claim 1, characterized in that: a grate plate (32) is arranged at the communication part of the third discharging channel (23) and the deslagging furnace (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110859032.7A CN113566586A (en) | 2021-07-28 | 2021-07-28 | Automatic slag removing device of smelting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110859032.7A CN113566586A (en) | 2021-07-28 | 2021-07-28 | Automatic slag removing device of smelting furnace |
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| Publication Number | Publication Date |
|---|---|
| CN113566586A true CN113566586A (en) | 2021-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110859032.7A Pending CN113566586A (en) | 2021-07-28 | 2021-07-28 | Automatic slag removing device of smelting furnace |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205803560U (en) * | 2016-06-07 | 2016-12-14 | 万泰和汽车材料（武汉）有限公司 | A kind of secondary aluminium stir-melting stove |
| CN209493621U (en) * | 2018-11-08 | 2019-10-15 | 浙江新格有色金属有限公司 | The online depassing unit of aluminium alloy smelting process |
| CN209890701U (en) * | 2019-03-12 | 2020-01-03 | 郑州万和铝业有限公司 | Aluminum slag recovery device |
| CN112985080A (en) * | 2021-02-23 | 2021-06-18 | 常州机电职业技术学院 | Non-ferrous metal smelting waste residue discharge and collection device and collection method |
| CN215864665U (en) * | 2021-07-28 | 2022-02-18 | 河南恒通新材料有限公司 | Automatic slag removing device of smelting furnace |
-
2021
- 2021-07-28 CN CN202110859032.7A patent/CN113566586A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205803560U (en) * | 2016-06-07 | 2016-12-14 | 万泰和汽车材料（武汉）有限公司 | A kind of secondary aluminium stir-melting stove |
| CN209493621U (en) * | 2018-11-08 | 2019-10-15 | 浙江新格有色金属有限公司 | The online depassing unit of aluminium alloy smelting process |
| CN209890701U (en) * | 2019-03-12 | 2020-01-03 | 郑州万和铝业有限公司 | Aluminum slag recovery device |
| CN112985080A (en) * | 2021-02-23 | 2021-06-18 | 常州机电职业技术学院 | Non-ferrous metal smelting waste residue discharge and collection device and collection method |
| CN215864665U (en) * | 2021-07-28 | 2022-02-18 | 河南恒通新材料有限公司 | Automatic slag removing device of smelting furnace |
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