CN201575695U - Efficient and environmental-protection aluminum scrap recovery melting furnace - Google Patents
Efficient and environmental-protection aluminum scrap recovery melting furnace Download PDFInfo
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- CN201575695U CN201575695U CN2009202661925U CN200920266192U CN201575695U CN 201575695 U CN201575695 U CN 201575695U CN 2009202661925 U CN2009202661925 U CN 2009202661925U CN 200920266192 U CN200920266192 U CN 200920266192U CN 201575695 U CN201575695 U CN 201575695U
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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
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
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Abstract
The utility model relates to an efficient and environmental-protection aluminum scrap recovery melting furnace which comprises a main melting chamber and a feed well; the main melting chamber is connected with the feed well through a feed pipe and an electromagnetic pump mounted on the feed pipe, the feed well is connected with the main melting chamber through a return pipe mounted at the bottom of the feed well to construct a circulation loop, and the pipe mouth elevation of the feed pipe of the main melting chamber is more than the pipe mouth elevation of the return pipe. The main melting chamber and the feed well are separated from each other and are communicated with each other through the circulation loop, the electromagnetic pump mounted on the feed pipe pumps the aluminum liquid, the molten aluminum in the main melting chamber flows to the feed well in specific speed and angle along the feed pipe under the electromagnetic force effect, and forms swirl in the circular feed well, and then the aluminum scraps fed into the feed well are quickly absorbed and covered by the molten aluminum flowing in swirl manner, the aluminum scraps are molten by the aluminum liquid in high speed, and the aluminum liquid flows back to the main melting chamber through the return pipe on the lower part of the feed well. The efficient and environmental-protection aluminum scrap recovery melting furnace has simple operation, low aluminum scrap oxidation burning loss, high heat efficiency and strong melting capacity.
Description
Technical field
The utility model relates to a kind of old metal smelting furnace, and the aluminium bits that relate in particular to a kind of high-efficiency environment friendly reclaim melting furnace.
Background technology
The aluminium scrap form is varied, and the aluminium bits are small and light because of it, very easily blown afloat oxidation by flame during fusing, sometimes the highest burn out rate causes the regeneration rate lower more than 70%, how to reduce scaling loss, improving the rate of recovery of aluminium, is that the aluminium bits reclaim the problem that needs emphasis to solve, and also is main difficult point problem.
Recovery fusing mode for the aluminium bits mainly contains following several at present: the one,, direct heat fused, do like this that energy consumption is big, environmental pollution is serious, in addition Zui Da problem is exactly an oxidization burning loss, for undersized aluminium bits, this fusing mode oxidization burning loss is quite serious, causes resource to waste greatly; The 2nd,, aluminium bits packing is squeezed into to add in the stove behind the piece melts, though reduce much than the aluminium bits are directly added working chamber's oxidization burning loss, burn out rate is still up to 10～15%; The third is, aluminium liquid covers smelting technology, the aluminium bits are dropped in the stove, utilize the thermal source of high temperature aluminum liquid as the fusing of aluminium bits, directly heat the aluminium bits without flame, thereby reduced the oxidization burning loss of aluminium bits, this method is an aluminium bits renovation process both economical, environmental protection, superiority is very outstanding aspect the recovery of aluminium bits, and its oxidization burning loss can accomplish≤4%.
The equipment that most of aluminum fabrication plants reclaim for the aluminium bits, adopted is cell-type reverberatory furnace and the molten aluminium stove of crucible type induction more, be shortcomings such as the melting mode mainly adopts aluminium bits packing extruding back heat fused, and this melting technique exists oxidization burning loss serious, and metal recovery rate is low, production efficiency is low.And developed country, in actual production for the fines regenerated metal, generally adopt above-mentioned aluminium liquid to cover smelting technology, not only can effectively avoid the big problem of naked light heated oxide scaling loss, aluminium liquid feasible aluminium water quality ground homogenising everywhere under the promotion of circulating pump has reduced or eliminated the temperature layer, and can be adapted to existing large-scale aluminum fabrication plant and Way of Remelting Scrap Aluminium factory simultaneously, can effectively reduce equipment investment very easily with the original reflective melting unit transformation of producer.
Summary of the invention
The purpose of this utility model is to overcome the deficiency that prior art exists, and provides a kind of aluminium bits of high-efficiency environment friendly to reclaim melting furnace, is intended to solve problems such as oxidization burning loss is big.
The purpose of this utility model is achieved through the following technical solutions:
A kind of aluminium bits of high-efficiency environment friendly reclaim melting furnace, comprise main molten chamber and reinforced well, be provided with weif orifice in main position of melting the close bottom of sidewall of chamber, characteristics are: the molten chamber of described master is connected with reinforced well with electromagnetic pump on being installed in feed pipe by feed pipe, described reinforced well links to each other with main molten chamber by the return duct that is installed in the bottom, constitute closed circuit, and the main mouth of pipe absolute altitude that melts feed pipe on the chamber is higher than the mouth of pipe absolute altitude of return duct.Main molten chamber separates with reinforced well, utilize circulation line to be communicated with, for flowing, aluminium liquid provides power by the electromagnetic pump that is installed on the feed pipe, aluminium water in the main molten chamber enters reinforced well along feed pipe with certain speed and angle under the effect of electromagnetic force, aluminium water forms vortex in the reinforced well of circle, the aluminium water that the aluminium bits of the reinforced well of adding are formed vortex motion entrainments rapidly, covers, the temperature of utilizing aluminium liquid is with the aluminium bits partial melting that adds, and unfused part is then got back to main molten chamber fusing with aluminium liquid through the return line flow of reinforced down-hole portion.
Further, the aluminium of above-mentioned a kind of high-efficiency environment friendly bits reclaim melting furnace, wherein, reinforced well reasonable diameter and height, aluminium liquid can not spill when helping producing the bigger vortex and the work of assurance.Adopting the inner chamber section is that circular pipeline connects main molten chamber, electromagnetic pump and reinforced well, and feed pipe and return duct all adopt certain angle and caliber, and feed pipe angle and caliber guarantee that the aluminium liquid that enters reinforced well has certain tangential and normal velocity respectively; Return duct guarantees liquid level in the reinforced well.Electromagnetic pump is installed on the feed pipe, and electromagnetic pump provides power for aluminum liquid movement, and electromagnetic pump can provide a plurality of gear thrusts and positive and negative two pushing directions, and during forward work, electromagnetic pump can be extracted the aluminium liquid of main molten chamber out, pushes reinforced well at a high speed to.
Further, the aluminium of above-mentioned a kind of high-efficiency environment friendly bits reclaim melting furnace, and wherein, the wall of described reinforced well is provided with the cleaning eye that is used to clear up feed pipe, and the concentricity line of cleaning eye and feed pipe can be by the residual aluminium in this hole cleaning feed pipe.
Further, the aluminium bits of above-mentioned a kind of high-efficiency environment friendly reclaim melting furnace, wherein, the overhead burner that is used for reinforced well oven dry and preheating is installed at the top of described reinforced well, the overhead burner uses when reinforced well is dried and start each time, and also is the guarantee of reinforced well temperature in day-to-day operation.
Again further, the aluminium of above-mentioned a kind of high-efficiency environment friendly bits reclaim melting furnace, wherein, temperature thermocouple and liquid level detector probe are installed on the sidewall of described reinforced well.
The substantive distinguishing features of technical solutions of the utility model and progressive being mainly reflected in:
The molten chamber of the utility model master separates with reinforced well, utilizes circulation line to be communicated with, and aluminium liquid is circulating between main molten chamber and reinforced well under the effect of electromagnetic pump.This type of furnace is used easy and simple to handle, aluminium bits oxidization burning loss is little, thermal efficiency height, melting capacity is strong, significantly improve the uniformity of melt temperature and composition, effectively avoid the big problem of naked light heated oxide scaling loss, can very easily original type of furnace be transformed into this type of furnace and produce, effectively reduced equipment investment.
Description of drawings
Below in conjunction with accompanying drawing technical solutions of the utility model are described further:
Fig. 1: schematic top plan view of the present utility model;
Fig. 2: the master of reinforced well looks schematic diagram.
The implication of each Reference numeral sees the following form among the figure:
| Reference numeral | Implication | Reference numeral | Implication | Reference numeral | Implication |
| 1 | Main |
2 | |
3 | Reinforced well |
| 4 | |
5 | |
6 | Weif |
| 31 | |
32 | |
33 | The |
| 34 | The liquid level detector probe |
The specific embodiment
As shown in Figure 1, a kind of aluminium bits of high-efficiency environment friendly reclaim melting furnace, comprise main molten chamber 1, electromagnetic pump 5 and reinforced well 3, be provided with weif orifice 6 at main position of melting the close bottom of sidewall of chamber 1, main molten chamber 1 is connected with reinforced well 3 with electromagnetic pump 5 on being installed in feed pipe by feed pipe 4, the return duct 2 of reinforced well 3 bottom being installed in links to each other with main molten chamber 1, constitute closed circuit, and the main mouth of pipe absolute altitude that melts feed pipe on the chamber 1 is higher than the mouth of pipe absolute altitude of return duct.Ever-increasing aluminium liquid in the main molten chamber 1 can be emitted by the weif orifice 6 on the main molten locular wall face, can not be lower than the top edge of feed pipe 4 at main molten chamber side pipe mouth in order to guarantee to produce the aluminium liquid height of leading continuously in the molten chamber.
The said equipment is used for the fusing of aluminium bits: add clean bulk aluminium waste during blow-on in main molten chamber 1, melt fast, form the melt of certain depth in the molten bath; Open electromagnetic pump 5; Aluminium liquid enters into reinforced well 3 through feed pipe 4, adds truck by mechanical oscillation the aluminium bits are added reinforced well 3, and the aluminium bits are covered fusing by high temperature aluminum liquid; Aluminium liquid is got back to main molten chamber 1 through return duct 2 again; Melt is circulated between main molten chamber 1 and reinforced well 3.
At the blow-on initial stage, the relatively large aluminium ingot of molten chamber 1 fusing of master because feed pipe 4 is higher than return duct 2, when the aluminium liquid degree of depth reaches feed pipe when the master is melted the mouth of pipe of chamber side, just can stop aluminium liquid to enter pipeline as long as oppositely open electromagnetic pump 5.Temperature in whole pipeline and reinforced well meets the demands, and the aluminium water in the main molten chamber has exceeded the molten chamber of feed pipe master side pipe mouth, when having certain depth, electromagnetic pump 5 is adjusted into forward work, main molten indoor aluminium liquid enters reinforced well 3 with certain speed along feed pipe 4 under the effect of electromagnetic pump 5 drafts.Because fluid has the structure that tangential velocity is added circular reinforced well, aluminium liquid forms in reinforced well has the conical vortex that the ability of necessarily entrainmenting is rolled downwards.Aluminium liquid in the reinforced well 3 is under the acting in conjunction of gravity and fluid viscous force, and the return duct 2 that speed reduces to fall then gradually by reinforced bottom flow back into main molten chamber 1.When producing continuously, by reinforced well 3 top charging mechanism continuous chargings, discharging then mostly is periodically, by 6 cycle of the weif orifice blowing on the main molten chamber, each discharging need keep certain aluminium water yield in stove, smooth with the fusion process that guarantees following one-period.
As shown in Figure 2, the wall of reinforced well 3 is provided with the cleaning eye 31 that is used to clear up feed pipe, at the top of reinforced well 3 the overhead burner 33 that is used for reinforced well oven dry and preheating is installed, on the sidewall of reinforced well 3, temperature thermocouple 32 and liquid level detector probe 34 is installed.
Whole stove group mainly is made up of main molten chamber 1, several sections such as reinforced well 3, electromagnetic pump 5 and circulation line, and aluminium liquid circulates between main molten chamber 1 and reinforced well 3 under the effect of electromagnetic pump 5.The type of furnace is simple to operate, and aluminium bits oxidization burning loss is little, thermal efficiency height, and melting capacity is strong, improves the uniformity of melt temperature and composition, can very easily the original type of furnace of producer be transformed into this type of furnace and produce, and has effectively reduced equipment investment.
The main chamber 1 of melting has a certain amount of molten aluminum liquid all the time when work, main molten chamber top seal can adopt electrical heating, or the combustion gas heating, for whole stove is to provide heat, these heats to be used for keeping the temperature of fusion of aluminium liquid and whole stove group.
Reinforced well 3 has unique internal structure, helps producing bigger vortex; The borehole wall is installed thermocouple 32, is used to detect reinforced well temperature; Liquid level detector probe 34 detects liquid level in the reinforced well, prevents that metal bath surface is too high; Reinforced well overhead burner 33, it mainly act as reinforced well baker, and the overhead burner must be used in reinforced well oven dry with when starting for the first time, and also is temperature guarantee in reinforced well and the pipeline in routine duties.
Pipeline has certain caliber and angle, and both having guaranteed has certain speed and angle when aluminium liquid enters reinforced well, guarantees that again aluminium liquid can keep certain degree of depth in the reinforced well.On feed pipe 4 and the return duct 2 temperature thermocouple is installed respectively, is used for the signal piping inner wall temperature.
When main molten chamber 1 temperature of aluminum liquid reaches certain value, open electromagnetic pump 5, the aluminium liquid in the feed pipe tangentially enters reinforced well 3 with certain speed and the angle that makes progress under the effect of electromagnetic pump thrust.Because aluminium liquid enters circular reinforced well 3 with certain tangential velocity, under the effect of fluid behaviour, form a very strong aluminium liquid vortex in the reinforced well, moment was just entrainmented into aluminium liquid after the aluminium bits added the pan feeding well, the aluminium bits are melted under the condition of secluding air, thereby greatly reduce oxidization burning loss, aluminium scrap liquid after the fusing and original aluminium liquid begin circulation together.The equipment that produces aluminium liquid vortex does not come in contact with aluminium liquid, can not pollute aluminium liquid, thereby guarantee the quality of aluminium liquid.
Aluminium liquid in the reinforced well 3 is under the acting in conjunction of gravity and fluid viscous force, and speed reduces gradually, and the return duct 2 through reinforced bottom flows back to main molten chamber 1 at last.Meanwhile, main molten indoor aluminium liquid replenishes under the effect of electromagnetic pump 5 and enters reinforced well 3.After system is stable, will form a stable aluminium liquid closed circuit between main molten chamber 1, reinforced well 3 like this, aluminium liquid obtains heat from main molten chamber 1, carries out heat exchange in reinforced well 3, with the fusing of initiate aluminium bits.
Feed pipe 4 and return duct 2 between reinforced well 3 and the main molten chamber 1 have certain angle, and return line is higher than feeding pipe, the blow-on initial stage when main molten chamber aluminium liquid begins to melt, open the electromagnetic pump of installing on the feed pipe 5 and make its acting in opposition, promoting main molten indoor aluminium liquid stops aluminium liquid to flow into reinforced well and pipeline, when preventing that the pipeline temperature is low, aluminium liquid solidifies at pipeline.
The refractory material that reinforced well 3 and circulation line are all selected for use, under the service condition of a large amount of long-term agitation cycle of aluminium liquid, material still can satisfy the normal use of given operating mode.
In sum, the utility model type of furnace adopts aluminium liquid to cover smelting technology, its oxidization burning loss≤4%.This type of furnace has not only effectively been avoided the big problem of naked light heated oxide scaling loss, and is adapted to existing large-scale aluminum fabrication plant and aluminium scrap fusing producer with original reflective melting unit transformation, has effectively reduced the investment of equipment.Problems such as the equipment that has solved the existence of present domestic aluminium bits regeneration fusion process is outmoded, backward in technique, oxidization burning loss is big.
What need understand is: above-mentioned explanation is not to be to restriction of the present utility model, and in the utility model design scope, the interpolation of being carried out, conversion, replacement etc. also should belong to protection domain of the present utility model.
Claims (4)
1. the aluminium of high-efficiency environment friendly bits reclaim melting furnace, comprise main molten chamber (1) and reinforced well (3), bottom position at main molten chamber (1) sidewall is provided with weif orifice (6), it is characterized in that: described master is melted chamber (1) and is connected with reinforced well (3) with electromagnetic pump (5) on being installed in feed pipe by feed pipe (4), described reinforced well (3) links to each other with main molten chamber (1) by the return duct (2) that is installed in the bottom, constitute closed circuit, and the master is melted the mouth of pipe absolute altitude that the mouth of pipe absolute altitude of going up feed pipe in chamber (1) is higher than return duct.
2. the aluminium of a kind of high-efficiency environment friendly according to claim 1 bits reclaim melting furnace, and it is characterized in that: the wall of described reinforced well (3) is provided with the cleaning eye (31) that is used to clear up feed pipe.
3. the aluminium of a kind of high-efficiency environment friendly according to claim 1 bits reclaim melting furnace, it is characterized in that: the overhead burner (33) that is used for reinforced well oven dry and preheating is installed at the top of described reinforced well (3).
4. the aluminium of a kind of high-efficiency environment friendly according to claim 1 bits reclaim melting furnace, it is characterized in that: temperature thermocouple (32) and liquid level detector probe (34) are installed on the sidewall of described reinforced well (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202661925U CN201575695U (en) | 2009-11-06 | 2009-11-06 | Efficient and environmental-protection aluminum scrap recovery melting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202661925U CN201575695U (en) | 2009-11-06 | 2009-11-06 | Efficient and environmental-protection aluminum scrap recovery melting furnace |
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| Publication Number | Publication Date |
|---|---|
| CN201575695U true CN201575695U (en) | 2010-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202661925U Expired - Lifetime CN201575695U (en) | 2009-11-06 | 2009-11-06 | Efficient and environmental-protection aluminum scrap recovery melting furnace |
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| Country | Link |
|---|---|
| CN (1) | CN201575695U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094120A (en) * | 2011-03-16 | 2011-06-15 | 湖南江滨机器（集团）有限责任公司 | Process for recovering aluminum scraps |
| CN102978420A (en) * | 2012-12-25 | 2013-03-20 | 遵义钛业股份有限公司 | Reducing device for producing titanium sponge |
-
2009
- 2009-11-06 CN CN2009202661925U patent/CN201575695U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094120A (en) * | 2011-03-16 | 2011-06-15 | 湖南江滨机器（集团）有限责任公司 | Process for recovering aluminum scraps |
| CN102978420A (en) * | 2012-12-25 | 2013-03-20 | 遵义钛业股份有限公司 | Reducing device for producing titanium sponge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100908 |