CN109737759A - A kind of fused magnesium fusing lump afterheat recyclable device with from deoxygenation function - Google Patents
A kind of fused magnesium fusing lump afterheat recyclable device with from deoxygenation function Download PDFInfo
- Publication number
- CN109737759A CN109737759A CN201811469100.3A CN201811469100A CN109737759A CN 109737759 A CN109737759 A CN 109737759A CN 201811469100 A CN201811469100 A CN 201811469100A CN 109737759 A CN109737759 A CN 109737759A
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- Prior art keywords
- water
- waste heat
- heat recovery
- cooling wall
- drum
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- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 title claims abstract description 54
- 229910052749 magnesium Inorganic materials 0.000 title claims abstract description 54
- 239000011777 magnesium Substances 0.000 title claims abstract description 54
- 238000006392 deoxygenation reaction Methods 0.000 title claims abstract description 38
- 239000002918 waste heat Substances 0.000 claims abstract description 72
- 238000011084 recovery Methods 0.000 claims abstract description 71
- 238000001816 cooling Methods 0.000 claims abstract description 63
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 31
- 230000008676 import Effects 0.000 claims description 11
- 238000009825 accumulation Methods 0.000 claims 1
- 238000004064 recycling Methods 0.000 claims 1
- 238000002844 melting Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 6
- 239000010410 layer Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000032258 transport Effects 0.000 description 6
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005338 heat storage Methods 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical group [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 235000014380 magnesium carbonate Nutrition 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- Y02P10/25—Process efficiency
Abstract
The present invention relates to a kind of fused magnesium fusing lump afterheat recyclable devices with from deoxygenation function, including molten stick together of waste heat recovery room, drum, deoxygenation head, track and magnesium to carry trolley；The waste heat recovery room is made of water-cooling wall, and the top of waste heat recovery room is arranged in drum, is connected by tedge, down-comer with water-cooling wall, deoxygenation head is set at the top of drum；Set track in waste heat recovery room, magnesium is molten to stick together and carry trolley and can move along track.Low temperature exhaust heat possessed by shelling electric-melting magnesium can be effectively absorbed and utilized in the configuration of the present invention is simple, economical and efficient.
Description
Technical field
The present invention relates to fused magnesium fusing lump afterheat recovery technology field more particularly to a kind of electric smelting with from deoxygenation function
Magnesium fusing lump afterheat recyclable device.
Background technique
In electric-melting magnesium magnesia production process, it will form that magnesium is molten to stick together after magnesite melting.Manufacturing technique requirent magnesium is molten to stick together only
It can be carried out natural cooling, not can be carried out pressure cooling, in order to avoid influence the crystallization effect of magnesia.200 are cooled in electrically fused magnesium fused weight
DEG C or so after can be to shelling, the molten surface temperature that sticks together of the magnesium after shelling is about 400~500 DEG C, this partial heat has just melted relatively
Electrically fused magnesium fused weight (1200 DEG C) institute's heat content after refining is much lower, and due to the factor of heat transfer temperature difference, conventional waste-heat recovery device
Heat absorption it is relatively inefficient.
It needs to carry out deoxygenation to boiler feedwater during cogeneration, generally uses independent thermal deaerator, remove
The steam that the gas source of oxygen device is drawn from boiler or steam turbine.But such design can consume good gas source, simultaneously for
There is no efficiently use for low temperature exhaust heat possessed by the electric-melting magnesium of shelling.And independent oxygen-eliminating device adapts to unheated condensed water
Property it is poor, deaerating effect is bad, it is often necessary to increase additional low-pressure heater, cause system designed by independent oxygen-eliminating device throw
Money is higher, and sexual valence is relatively low.
It is more economical, higher to heat utilization rate that therefore, it is necessary to one kind, and the electric-melting magnesium institute of shelling can effectively be absorbed and utilized
The low temperature exhaust heat having, structure is simple, can replace the waste-heat recovery device of low-pressure heater.
Summary of the invention
The present invention provides a kind of fused magnesium fusing lump afterheat recyclable devices with from deoxygenation function, and structure is simple, warp
Efficiently, low temperature exhaust heat possessed by shelling electric-melting magnesium can be effectively absorbed and utilized in Ji.
In order to achieve the above object, the present invention is implemented with the following technical solutions:
A kind of fused magnesium fusing lump afterheat recyclable device with from deoxygenation function, including waste heat recovery room, drum, deoxygenation
Molten stick together of head, track and magnesium carries trolley；The waste heat recovery room is made of water-cooling wall, and the upper of waste heat recovery room is arranged in drum
Side, is connected with water-cooling wall by tedge, down-comer, deoxygenation head is set at the top of drum；Track is set in waste heat recovery room, magnesium is molten to stick together
Carrying trolley can be moved along track.
The water-cooling wall is fin panel casing.
Upper collecting chamber is set at the top of the water-cooling wall, header is set in the bottom of water-cooling wall, and lower header passes through down-comer and drum
It is connected, upper collecting chamber is connected by tedge with drum.
Water separator is set in the drum, and safety valve, pressure gauge, water-level gauge and emergency blowoff pipe are set on drum；Vapour
The bottom of packet sets out water pipe；The top of the deoxygenation head sets water inlet, and top sets exhaust outlet.
The waste heat recovery room is annular waste heat recovery room or tunnel type waste heat recovery room.
The annular waste heat recovery room collectively constitutes closed ring by top water-cooling wall, inner ring water-cooling wall, outer ring water-cooling wall
Shape space, the side of the annular space set the import of waste heat recovery room and the outlet of waste heat recovery room, the import of waste heat recovery room and waste heat
Recovery room outlet is disposed adjacent, and passes through access doors and outlet door termination respectively；Magnesium is molten to stick together that carry trolley be rotary trolley, rail
Road is circular orbit, and rotary trolley is moved in a circle by trolley driving device drives edge circular orbit.
The bottom end of the outer ring water-cooling wall is connected to by lower header outer ring, and the bottom end of inner ring water-cooling wall passes through lower header inner ring
Connection；The top of outer ring water-cooling wall is connected to the outer end of top water-cooling wall by upper collecting chamber outer ring, the top of inner ring water-cooling wall with
The inner end of top water-cooling wall is connected to by upper collecting chamber inner ring；Lower header inner ring is connected to by central tube, and central tube passes through interior subordinate
Drop pipe is connected to drum；Lower header outer ring is connected to by external down-comer with drum；Upper collecting chamber inner ring by multiple tedges with
Heat storage container is connected.
Compared with prior art, the beneficial effects of the present invention are:
1) structure of the more traditional fused magnesium fusing lump afterheat recyclable device of waste-heat recovery device of the present invention is more compact, subtracts
The investment for having lacked pipeline, valve, reduces construction investment, to greatly reduce construction investment；
2) the more traditional fused magnesium fusing lump afterheat recyclable device of waste-heat recovery device of the present invention improves total waste heat and returns
It produces effects rate, reduces unnecessary steam consumption；
3) occupied area of waste-heat recovery device of the present invention is small, and land use degree is high；
4) waste-heat recovery device of the present invention is compared with the waste-heat recovery device at present in the form of natural heat dissipation, Ke Yida
To optimal waste heat recovering effect, the total amount highest of heat is recycled；
5) deaerating effect of waste-heat recovery device of the present invention is more preferable, since heat transfer temperature difference is big, so heat transfer effect is more
Add remarkably, boiling time is longer in oxygen-eliminating device, and intensity is bigger.
Detailed description of the invention
Fig. 1 is a kind of structural representation with the fused magnesium fusing lump afterheat recyclable device from deoxygenation function of the present invention
Figure.
Fig. 2 is the A-A view in Fig. 1.
In figure: water-cooling wall 1-2. inner ring water-cooling wall 1-3. outer ring water-cooling wall 1- at the top of 1. annular waste heat recovery room 1-1.
4. it is only that waste heat recovery room import 1-5. waste heat recovery room exports 2. rotary trolley 2-1. loading floor 2-2. wheel group 2-3.
Vertical 3. trolley driving device of suspension, 4. circular orbit, 5. steel structure support, 6. drum 6-1. safety valve 6-2. is outer for steam
In 7. deoxygenation head 7-1. water inlet 7-2. exhaust outlet of valve 6-3. pressure gauge 6-4. water-level gauge 6-5. water outlet, 8. lower header
Outside 12. flexible seals of ring 9. lower header outer ring, 10. upper collecting chamber inner ring, 11. upper collecting chamber outer ring, 13. inner drop tube 14.
15. central tube 16. of portion's down-comer shelling electrically fused magnesium fused weight
Specific embodiment
Specific embodiments of the present invention will be further explained with reference to the accompanying drawing:
As shown in Figure 1 and Figure 2, a kind of fused magnesium fusing lump afterheat recyclable device with from deoxygenation function of the present invention, packet
It includes molten stick together of waste heat recovery room, drum 6, deoxygenation head 7, track and magnesium and carries trolley；The waste heat recovery room is made of water-cooling wall, vapour
The top of waste heat recovery room is arranged in packet 6, is connected by tedge, down-comer with water-cooling wall, the top of drum 6 sets deoxygenation head 7；
Set track in waste heat recovery room, magnesium is molten to stick together and carry trolley and can move along track.
The water-cooling wall is fin panel casing.
Upper collecting chamber is set at the top of the water-cooling wall, header is set in the bottom of water-cooling wall, and lower header passes through down-comer and drum 6
It is connected, upper collecting chamber is connected by tedge with drum.
Water separator is set in the drum 6, and safety valve, pressure gauge, water-level gauge and emergency blowoff pipe are set on drum 6；
The bottom of drum 6 sets out water pipe；The top of the deoxygenation head 7 sets water inlet, and top sets exhaust outlet.
The waste heat recovery room is annular waste heat recovery room 1 or tunnel type waste heat recovery room.
The annular waste heat recovery room 1 is by top water-cooling wall 1-1, inner ring water-cooling wall 1-2, common group of outer ring water-cooling wall 1-3
At closed annular space, the side of the annular space sets waste heat recovery room import 1-4 and waste heat recovery room outlet 1-5, waste heat
Recovery room import 1-4 and waste heat recovery room outlet 1-5 are disposed adjacent, and pass through access doors and outlet door termination respectively；Magnesium is molten to stick together
Carrying trolley is rotary trolley 2, and track is circular orbit 4, and rotary trolley 2 is by 3 drives edge circular rails of trolley driving device
Road 4 moves in a circle.
The bottom end of the outer ring water-cooling wall 1-3 is connected to by lower header outer ring 9, under the bottom end of inner ring water-cooling wall 1-2 passes through
Header inner ring 8 is connected to；The top of outer ring water-cooling wall 1-3 is connected to the outer end of top water-cooling wall 1-1 by upper collecting chamber outer ring 11, interior
The top of ring water-cooling wall 1-2 is connected to the inner end of top water-cooling wall 1-1 by upper collecting chamber inner ring 10；During lower header inner ring 8 passes through
Heart pipe 15 is connected to, and central tube 15 is connected to by inner drop tube 13 with drum 6；Lower header outer ring 9 by external down-comer 14 with
Drum 6 is connected to；Upper collecting chamber inner ring 8 is connected by multiple tedges with heat storage container.
Following embodiment is implemented under the premise of the technical scheme of the present invention, gives detailed embodiment and tool
The operating process of body, but protection scope of the present invention is not limited to following embodiments.Method therefor is such as without spy in following embodiments
Not mentionleting alone bright is conventional method.
[embodiment]
As shown in Figure 1, the present embodiment is described as follows for having the waste-heat recovery device of annular waste heat recovery room:
A kind of fused magnesium fusing lump afterheat recyclable device with from deoxygenation function described in the present embodiment, including annular waste heat return
Receive room 1, drum 6, deoxygenation head 7, rotary trolley 2 and trolley driving device 3；The annular waste heat recovery room 1 is by top water cooling
Wall 1-1, inner ring water-cooling wall 1-2, outer ring water-cooling wall 1-3 collectively constitute closed annular space, and the side of the annular space sets remaining
Heat recovery chamber import 1-4 and waste heat recovery room export 1-5, and 1-5 is adjacent waste heat recovery room import 1-4 and the outlet of waste heat recovery room sets
It sets, and passes through access doors and outlet door termination respectively；The top of annular waste heat recovery room 1 sets drum 6, and drum 6 passes through tedge
Each water-cooling wall 1-1,1-2,1-3 of annular waste heat recovery room 1 are connected with down-comer；Rotary trolley 2 is arranged in annular waste heat
It in recovery room 1, is moved in a circle by 3 drives edge circular orbit 4 of trolley driving device, rotary trolley 2 is for carrying shelling electricity
Molten magnesium is molten to stick together 16.
The top water-cooling wall 1-1, inner ring water-cooling wall 1-2, outer ring water-cooling wall 1-3 are fin panel casing；Each water cooling
Heat insulation layer and protective layer are respectively equipped on the outside of wall；Splash guard is set at the top of the circular space that inner ring water-cooling wall 1-2 is surrounded.
The outside of the annular waste heat recovery room 1 sets steel structure support 5, and the annular hanging of waste heat recovery room 1 is in steel construction branch
On frame 5, lower header inner ring 8, lower header outer ring 9 bottom and ground between be tightly connected by flexible seals 12；Drum 6 is set
It sets on steel structure support 5, the top of drum 6 sets deoxygenation head 7.
The rotary trolley 2 includes loading floor 2-1, wheel group 2-2 and independent suspension 2-3；Loading floor 2-1 is by multistage
Table top connection forms, and one or more groups of wheel group 2-2 is set below every section of table top, and between every section of table top and corresponding wheel group 2-2
It is connected by independent suspension 2-3；Wheel group 2-2 includes inner ring wheel group and outer ring wheel group；The trolley driving device 3 is set to more than annular
Outside heat recovery chamber 1, it is made of motor, retarder and transmission device.
The rotary trolley 2 by heat-resisting steel making, the outer surface of rotary trolley 2 be equipped with low-emissivity material coating or
Heat radiation reflecting layer.
The waste heat recovery room import is along the tangentially-arranged intake channel of annular space, and the outlet of waste heat recovery room is along annular empty
Between tangentially-arranged exit passageway, intake channel, exit passageway constructed by refractory material, is respectively equipped on the inside of channel low
Emissivity material coating or heat radiation reflecting layer.
The low-emissivity material coating is chrome layer, and heat radiation reflecting layer is tinfoil paper reflecting layer.
The access doors and outlet portal are fast opening and closing type rolling screen door.
A kind of working principle with the fused magnesium fusing lump afterheat recyclable device from deoxygenation function described in the present embodiment is as follows:
First enter deoxygenation head 7 from water inlet 7-1 into each water-cooling wall 1-1 of waste-heat recovery device, 102, the cold water of 1-3, passes through
Enter drum 6 after crossing the water drenching head in deoxygenation head 7, it is logical in the water vapour of water-cooling wall 1-1,1-2,1-3 and 6 internal circulation heat-exchanging of drum
Reverse contact heat-exchanging is carried out with the cold water of non-deoxygenation in deoxygenation head 7 after the steam-water separator progress steam-water separation crossed in drum 6, is added
Hot cold water, releases oxygen contained in cold water, is discharged by the exhaust outlet 7-2 being arranged above deoxygenation head 7.In drum 6
Water be in fluidized state, the incondensable gas released is through draining into atmosphere outside 7 top vent 7-2 of deoxygenation head.
Electrically fused magnesium fused weight after shelling is loaded by the molten transport trolley that sticks together of magnesium, is entered more than annular through waste heat recovery room import 1-4
In heat recovery chamber 1, by be mounted in the molten material-pulling device to stick together on transport trolley of magnesium will shell electrically fused magnesium fused weight 16 shift onto it is rotary
On trolley 2, after the molten transport trolley that sticks together of magnesium after discharging exits annular waste heat recovery room 1, access doors are closed immediately；
Start trolley driving device 3, shelling electrically fused magnesium fused weight 16 is moved with rotary trolley 2 along circular orbit 4；Drum 6
Interior water enters lower header inner ring 8 into 13 by inner drop tube, while entering lower header outer ring 9 by external down-comer 14, then
In each water-cooling wall for circularizing waste heat recovery room 1 into group；Shell electrically fused magnesium fused weight 16 in moving process with each water cooling
Radiant heat transfer is carried out between wall 1-1,1-2,1-3, by adjusting the movement speed of rotary trolley 2, is guaranteed to water-cooling wall everywhere
Carry out relatively uniform heat exchange.
The 16 heat major storage of shelling electrically fused magnesium fused weight that annular waste heat recovery room 1 absorbs in drum 6, by drum 6 into
The storage of row energy and outer confession；Shelling electrically fused magnesium fused weight 16 after cooling melts the device for discharging for the transport trolley that sticks together by being mounted in magnesium
It is discharged on the molten transport trolley that sticks together of magnesium and transports outward from the loading floor of rotary trolley 2.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (7)
1. a kind of fused magnesium fusing lump afterheat recyclable device with from deoxygenation function, which is characterized in that including waste heat recovery room, vapour
Molten stick together of packet, deoxygenation head, track and magnesium carries trolley；The waste heat recovery room is made of water-cooling wall, and drum setting is recycled in waste heat
The top of room is connected with water-cooling wall by tedge, down-comer, deoxygenation head is set at the top of drum；Track is set in waste heat recovery room,
Magnesium is molten to stick together and carries trolley and can move along track.
2. a kind of fused magnesium fusing lump afterheat recyclable device with from deoxygenation function according to claim 1, feature exist
In the water-cooling wall is fin panel casing.
3. a kind of fused magnesium fusing lump afterheat recyclable device with from deoxygenation function according to claim 1, feature exist
In, upper collecting chamber is set at the top of the water-cooling wall, header is set in the bottom of water-cooling wall, and lower header is connected by down-comer with drum,
Upper collecting chamber is connected by tedge with drum.
4. a kind of fused magnesium fusing lump afterheat recyclable device with from deoxygenation function according to claim 1, feature exist
In setting water separator in the drum, safety valve, pressure gauge, water-level gauge and emergency blowoff pipe set on drum；The bottom of drum
Portion sets out water pipe；The top of the deoxygenation head sets water inlet, and top sets exhaust outlet.
5. a kind of fused magnesium fusing lump afterheat recyclable device with from deoxygenation function according to claim 1, feature exist
In the waste heat recovery room is annular waste heat recovery room or tunnel type waste heat recovery room.
6. a kind of fused magnesium fusing lump afterheat recyclable device with from deoxygenation function according to claim 5, feature exist
In the annular waste heat recovery room collectively constitutes closed annular sky by top water-cooling wall, inner ring water-cooling wall, outer ring water-cooling wall
Between, the side of the annular space sets the import of waste heat recovery room and the outlet of waste heat recovery room, the import of waste heat recovery room and waste heat recycling
Room outlet is disposed adjacent, and passes through access doors and outlet door termination respectively；Molten stick together of magnesium carries trolley as rotary trolley, and track is
Circular orbit, rotary trolley are moved in a circle by trolley driving device drives edge circular orbit.
7. a kind of fused magnesium fusing lump afterheat recyclable device with from deoxygenation function according to claim 6, feature exist
In the bottom end of the outer ring water-cooling wall is connected to by lower header outer ring, and the bottom end of inner ring water-cooling wall is connected to by lower header inner ring；
The top of outer ring water-cooling wall is connected to the outer end of top water-cooling wall by upper collecting chamber outer ring, the top of inner ring water-cooling wall and top water
The inner end of cold wall is connected to by upper collecting chamber inner ring；Lower header inner ring by central tube be connected to, central tube by inner drop tube with
Drum connection；Lower header outer ring is connected to by external down-comer with drum；Upper collecting chamber inner ring is held by multiple tedges and accumulation of heat
Device is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811469100.3A CN109737759B (en) | 2018-12-04 | 2018-12-04 | Electric smelting magnesium melting lump waste heat recovery device with self-deoxidizing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811469100.3A CN109737759B (en) | 2018-12-04 | 2018-12-04 | Electric smelting magnesium melting lump waste heat recovery device with self-deoxidizing function |
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| CN109737759A true CN109737759A (en) | 2019-05-10 |
| CN109737759B CN109737759B (en) | 2024-04-26 |
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| CN109737759B (en) | 2024-04-26 |
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