CN109631595A - A kind of fused magnesium fusing lump afterheat recovery method - Google Patents
A kind of fused magnesium fusing lump afterheat recovery method Download PDFInfo
- Publication number
- CN109631595A CN109631595A CN201811469310.2A CN201811469310A CN109631595A CN 109631595 A CN109631595 A CN 109631595A CN 201811469310 A CN201811469310 A CN 201811469310A CN 109631595 A CN109631595 A CN 109631595A
- Authority
- CN
- China
- Prior art keywords
- waste heat
- fused
- heat recovery
- magnesium
- weight
- 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.)
- Granted
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Classifications
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- 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
- F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
- F27D15/02—Cooling
- F27D15/0206—Cooling with means to convey the charge
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- 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
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2001/00—Composition, conformation or state of the charge
- F27M2001/01—Charges containing mainly non-ferrous metals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2003/00—Type of treatment of the charge
- F27M2003/13—Smelting
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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
- Y02P10/25—Process efficiency
Abstract
The present invention relates to a kind of fused magnesium fusing lump afterheat recovery methods, electrically fused magnesium fused weight is sent into annular waste heat recovery room and is cooled down, bogey is set in annular waste heat recovery room for carrying electrically fused magnesium fused weight and it being driven circumferentially to move along annular waste heat recovery room, and the waste heat of electrically fused magnesium fused weight is collected by annular waste heat recovery room.The initial cooling temperature of the electrically fused magnesium fused weight is 1000~1200 DEG C, it is discharged when its appearance is cooled to 200~300 DEG C from the outlet of annular waste heat recovery room, broken shell is carried out, the not completely cooling electrically fused magnesium fused weight that core temperature is 500 DEG C or more is again introduced into recovery waste heat in annular waste heat recovery room.The present invention is compared with conventional tunnel type waste-heat recovery device, remaining heat recovery efficiency is high, electrically fused magnesium fused weight crystallization effect is good, and occupied area is small, and land use degree is high.
Description
Technical field
The present invention relates to fused magnesium fusing lump afterheat recovery technology field more particularly to a kind of fused magnesium fusing lump afterheat recycling sides
Method.
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；Magnesium is molten simultaneously stick together in containing huge
Residual heat resources are for recycling.
Currently, domestic waste-heat recovery device generallys use tunnel type heat recovery boiler, red-hot magnesium is molten to stick together in tunnel
It is interior it is longitudinal advance, tunnel outer wall is tube bank of absorbing heat, and over time, molten stick together of magnesium is gradually cooled as it passes through the cooler, the heat distributed by
Waste-heat recovery device recycling.Molten stick together of magnesium is sent into waste-heat recovery device according to the requirement of production technology one by one, cools down after a certain period of time,
It is discharged one by one out of waste-heat recovery device.Stick together natural cooling time length (4h or more) since electric-melting magnesium magnesium is molten, initial cooling temperature
1200 DEG C, differ larger with discharge temperature (about 200 DEG C), therefore the caloric receptivity fluctuation of waste-heat recovery device is very big.Waste heat
The caloric receptivity of recyclable device gradually successively decreases with the progress time of the molten natural cooling that sticks together of magnesium, is sent into waste heat recycling dress when new magnesium melts to stick together
It postpones, the caloric receptivity of waste heat recycling increases suddenly, then gradually decreases, loops back and forth like this.
Main problem existing for above-mentioned exhaust heat recovering method is the heat that waste-heat recovery device recycles early period and later period in waste heat
Amount is unevenly distributed, waste-heat recovery device it is outer for quantity of steam fluctuate it is very big.And the front of tunnel type waste-heat recovery device by
Hot face and the back-end surfaces temperature difference are also larger.With the molten passage to stick together cooling time of magnesium, the caloric receptivity of back-end surfaces quickly subtracts
It is few.Due to the reduction of heat transfer temperature difference, according to radiant heat transfer principle, back-end surfaces caloric receptivity is rapidly reduced with biquadratic ratio,
Cooling velocity quickly reduces, molten extension cooling time that sticks together of magnesium.It is cold compared with natural cooling process when being recycled without waste heat
But the temperature difference is smaller, and cooling time is long, and production efficiency is lower, and metal material consumption is big.It will also result in waste-heat recovery device simultaneously
Carbonated drink unsmooth flowing, circulating ratio decline is too fast, and then makes back-end surfaces that can not steam, and influences entire waste-heat recovery device
Waste heat recovering effect.
Summary of the invention
The present invention provides a kind of fused magnesium fusing lump afterheat recovery methods, with conventional tunnel type waste-heat recovery device phase
Than remaining heat recovery efficiency is high, electrically fused magnesium fused weight crystallization effect is good, and occupied area is small, and land use degree is high.
In order to achieve the above object, the present invention is implemented with the following technical solutions:
Electrically fused magnesium fused weight is sent into annular waste heat recovery room and is cooled down by a kind of fused magnesium fusing lump afterheat recovery method,
Bogey is set in annular waste heat recovery room to be used to carry electrically fused magnesium fused weight and it is driven circumferentially to move along annular waste heat recovery room,
The waste heat of electrically fused magnesium fused weight is collected by annular waste heat recovery room.
The initial cooling temperature of the electrically fused magnesium fused weight is 1000~1200 DEG C, is cooled to 200~300 DEG C in its appearance
When be discharged from the outlet of annular waste heat recovery room, carry out broken shell, the not completely cooling electric smelting that core temperature is 500 DEG C or more
Molten stick together of magnesium is again introduced into recovery waste heat in annular waste heat recovery room.
The shape of the annular waste heat recovery room is annular shape, triangle ring-type or rectangular ring.
It is single-turn or multi-turn that the electrically fused magnesium fused weight, which recycles indoor motion profile in annular waste heat, and the direction of motion is single
It is moved to movement or bidirectional reciprocating.
Compared with prior art, the beneficial effects of the present invention are:
Compared with conventional tunnel type waste-heat recovery device, remaining heat recovery efficiency is high, electrically fused magnesium fused weight crystallization effect is good,
Occupied area is small, and land use degree is high.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of fused magnesium fusing lump afterheat recovery method of the present invention.
In figure: 1. 2. bogey of annular waste heat recovery room, 3. 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, a kind of fused magnesium fusing lump afterheat recovery method of the present invention, send electrically fused magnesium fused weight 3 into annular
It is cooled down in waste heat recovery room 1, bogey 2 is set in annular waste heat recovery room 1 for carrying electrically fused magnesium fused weight 3 and driving it
It is circumferentially moved along annular waste heat recovery room 1, the waste heat of electrically fused magnesium fused weight 3 is collected by annular waste heat recovery room 1.
The initial cooling temperature of the electrically fused magnesium fused weight 3 is 1000~1200 DEG C, is cooled to 200~300 DEG C in its appearance
When be discharged from the outlet of annular waste heat recovery room 1, carry out broken shell, core temperature is 500 DEG C or more completely not cooling
Electrically fused magnesium fused weight 3 is again introduced into recovery waste heat in annular waste heat recovery room 1.
The shape of the annular waste heat recovery room 1 is annular shape, triangle ring-type or rectangular ring.
Motion profile of the electrically fused magnesium fused weight 3 in annular waste heat recovery room 1 is single-turn or multi-turn, and the direction of motion is
One-way movement or bidirectional reciprocating movement.
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 (4)
1. a kind of fused magnesium fusing lump afterheat recovery method, which is characterized in that electrically fused magnesium fused weight to be sent into annular waste heat recovery room
It is cooled down, bogey is set in annular waste heat recovery room for carrying electrically fused magnesium fused weight and driving it along annular waste heat recovery room
It is circumferential mobile, the waste heat of electrically fused magnesium fused weight is collected by annular waste heat recovery room.
2. a kind of fused magnesium fusing lump afterheat recovery method according to claim 1, which is characterized in that the electrically fused magnesium fused weight
Initial cooling temperature be 1000~1200 DEG C, from annular waste heat recovery room when its appearance is cooled to 200~300 DEG C
Outlet discharge, carries out broken shell, and the not completely cooling electrically fused magnesium fused weight that core temperature is 500 DEG C or more is again introduced into annular waste heat
Recovery waste heat in recovery room.
3. a kind of fused magnesium fusing lump afterheat recovery method according to claim 1, which is characterized in that the annular waste heat returns
The shape for receiving room is annular shape, triangle ring-type or rectangular ring.
4. a kind of fused magnesium fusing lump afterheat recovery method according to claim 1, which is characterized in that the electrically fused magnesium fused weight
Recycling indoor motion profile in annular waste heat is single-turn or multi-turn, and the direction of motion is that one-way movement or bidirectional reciprocating move.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811469310.2A CN109631595B (en) | 2018-12-04 | 2018-12-04 | Method for recovering waste heat of fused magnesium fused weight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811469310.2A CN109631595B (en) | 2018-12-04 | 2018-12-04 | Method for recovering waste heat of fused magnesium fused weight |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109631595A true CN109631595A (en) | 2019-04-16 |
| CN109631595B CN109631595B (en) | 2020-10-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811469310.2A Active CN109631595B (en) | 2018-12-04 | 2018-12-04 | Method for recovering waste heat of fused magnesium fused weight |
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| Country | Link |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278892A (en) * | 2011-06-08 | 2011-12-14 | 河北联合大学 | Sintered ore double screw type cooling heat exchange device |
| CN202216564U (en) * | 2011-08-30 | 2012-05-09 | 山东华星环保集团有限公司 | Electricity melt magnesium lump cooling and waste heat recycling device |
| CN104197701A (en) * | 2014-08-28 | 2014-12-10 | 攀枝花市立宇矿业有限公司 | Tunnel kiln for direct reduction of iron ore powder |
| CN104215078A (en) * | 2014-08-29 | 2014-12-17 | 东北大学 | Magnesia clinker production equipment with waste heat recovery device and process |
| CN104296530A (en) * | 2014-10-09 | 2015-01-21 | 王树林 | Annular moving plate energy conservation kiln |
| CN204154124U (en) * | 2014-08-29 | 2015-02-11 | 东北大学 | A kind of water cooled wall type magnesium fusing lump afterheat retracting device |
-
2018
- 2018-12-04 CN CN201811469310.2A patent/CN109631595B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278892A (en) * | 2011-06-08 | 2011-12-14 | 河北联合大学 | Sintered ore double screw type cooling heat exchange device |
| CN202216564U (en) * | 2011-08-30 | 2012-05-09 | 山东华星环保集团有限公司 | Electricity melt magnesium lump cooling and waste heat recycling device |
| CN104197701A (en) * | 2014-08-28 | 2014-12-10 | 攀枝花市立宇矿业有限公司 | Tunnel kiln for direct reduction of iron ore powder |
| CN104215078A (en) * | 2014-08-29 | 2014-12-17 | 东北大学 | Magnesia clinker production equipment with waste heat recovery device and process |
| CN204154124U (en) * | 2014-08-29 | 2015-02-11 | 东北大学 | A kind of water cooled wall type magnesium fusing lump afterheat retracting device |
| CN104296530A (en) * | 2014-10-09 | 2015-01-21 | 王树林 | Annular moving plate energy conservation kiln |
Non-Patent Citations (1)
| Title |
|---|
| 云正宽主编: "《冶金工程设计》", 30 June 2006 * |
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| CN109631595B (en) | 2020-10-30 |
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