CN201269692Y - High-efficiency aluminum alloy melting and heat preservation stove with low oxidization burning loss and high molten aluminum quality - Google Patents
High-efficiency aluminum alloy melting and heat preservation stove with low oxidization burning loss and high molten aluminum quality Download PDFInfo
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- CN201269692Y CN201269692Y CNU2008200608233U CN200820060823U CN201269692Y CN 201269692 Y CN201269692 Y CN 201269692Y CN U2008200608233 U CNU2008200608233 U CN U2008200608233U CN 200820060823 U CN200820060823 U CN 200820060823U CN 201269692 Y CN201269692 Y CN 201269692Y
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Abstract
A high-efficiency aluminum alloy melt maintaining furnace with low oxygenized burning loss and high aluminum liquid quality comprises a furnace body, a temperature rising room, a furnace cover, a melt heat preservation room, a combustor arranged on the furnace cover, a melting chamber combustor and a batch charging tower, and is characterized in that the temperature rising room between the melt heat preservation room and an aluminum liquid output port is provided with a degasifier, a filter plate and an electric heating rod which is connected with a temperature controller. The melt heat preservation room is provided with a flat flame combustor and an aluminum liquid temperature sensor. By adding the degasifier, the filter plate and the electric heating rod in the temperature rising room between the melt heat preservation room and the aluminum liquid output port and simultaneously altering a long-flame combustor into the flat flame combustor, the utility model leads the flame not to be contacted with the aluminum liquid, increases the radiation area of flame, and causes a heating space in the melt heat preservation room to be smaller and a flame heat transfer area to be larger. Besides, the furnace can independently control the temperature of the aluminum liquid and the atmosphere in the temperature rising room, lower the temperature of the aluminum liquid and the atmosphere in the melt temperature rising room as far as possible on the premise of ensuring the normal use of supply capacity, and dramatically decrease the oxygenized burning loss and hydrogen absorption amount of aluminum liquid.
Description
Technical field
The utility model relates to a kind of aluminum alloy melting holding furnace, and especially a kind of efficient suboxides scaling loss high alumina water quality aluminum alloy melting holding furnace belongs to the special-purpose melting and heat preservation equipment class of aluminium alloy casting.
Background technology
Efficient tower type melting and heat preservation stove is that present aluminium alloy casting processing industry melts the most frequently used design of operation to the aluminium alloy solid, and this stove uses burner that the solid aluminium alloy is carried out heat fused.The solid aluminium alloy is dropped into by the feeding tower (smokejack of holding concurrently) of melting furnace, the burner of bottom side carries out heat fused to the solid aluminium alloy, discharge out of the furnace after the melting solid aluminium alloy heat absorption of combustion product gases in feeding tower, the high-temperature flue gas of aluminium liquid intensification chamber burner is also discharged after the solid alloy heat absorption from this passage, aluminium liquid intensification chamber uses bright flame long-flame burner that aluminium liquid liquid level is sprayed heating, is easy to generate scaling loss and increases aluminium liquid to inhale hydrogen and cause bubble structure in the fabircated shapes.
Simultaneously, in the aluminium liquid intensification chamber of the melting and heat preservation stove that uses at present, the aluminium liquid that flows in the time of need be to the fusing operation that heats up makes it can reach the temperature that can use.When aluminium liquid is heated up operation, owing to worry that conventional long-flame burner adds the oxidization burning loss of thermo-contact aluminium liquid to aluminium liquid liquid level from top, intensification chamber, generally all do the spatial altitude of intensification chamber higherly, She Ji result is like this: cause that flame and aluminium liquid liquid level distance, furnace atmosphere space are big, area of dissipation area excessive, flame in furnace wall is little, thereby cause the low excessively of the thermal efficiency.
Because aluminium casting processing industry need be used low impurity content, the pure high temperature aluminum water (higher 50～100 ℃) of low aluminium water hydrogen content than die casting industry, and for the hydrogen of eliminating in the aluminium water produces blow hole, generally all to filter employed aluminium water, dehydrogenation (degasification), and in the filtration degassing procedure, filter can increase the thermal resistance of aluminium water, can take away heat again during degasification, the final high temperature aluminum water that comes out from aluminium water intensification chamber is progressively reduced, in order to guarantee that intake aluminium coolant-temperature gage can normally use, generally all be in the intensification chamber aluminium coolant-temperature gage to be increased to more than 800 ℃, like this, through filtering, aluminium coolant-temperature gage after the degasification cooling could be fit to casting to be used.According to the characteristics of aluminium alloy, temperature of aluminum liquid and its oxidization burning loss are proportional, so, reduce the aluminium coolant-temperature gage and help reducing oxidization burning loss; In addition, the ascendant trend linearly behind 660 ℃ of aluminium coolant-temperature gages of the hydrogen content in the aluminium liquid.The raising of intensification chamber temperature of aluminum liquid has not only increased scaling loss and hydrogen content, and also because the intensification outdoor face is long-pending for maximum in the stove, the rising of inner furnace temperature has also brought huge radiation loss.
Therefore, how to improve aluminium alloy and concentrate the energy utilization rate of melting furnace, abandon at present this a small amount of high temperature aluminum liquid for the use of intake gap, back, and desperately a large amount of aluminium liquid whole in the holding furnace are promoted to the very incorrect heating method of high-temperature, solve and use pure high temperature aluminum water and reduce this a pair of contradiction of scaling loss, just become the important measures that the sector is increased economic efficiency.
The utility model content
The purpose of the present utility model: be intended to propose a kind of efficient suboxides scaling loss high alumina water quality aluminum alloy melting holding furnace.Can be on the basis of conventional melting and heat preservation stove, promptly reduce intensification chamber atmosphere control temperature, prevent that flame from directly contacting liquid aluminum and causing oxidization burning loss, improve the heat transfer efficiency of intensification chamber burner, the oxidation oxidization burning loss that reduces intensification chamber aluminium liquid, reduction because the aluminium liquid hydrogen that high temperature causes increases problem, thereby improve the integrated heat efficiency and the aluminium water quality of this melting furnace.
This efficient suboxides scaling loss high alumina water quality aluminum alloy melting holding furnace, comprise body of heater, intensification chamber, bell, melting and heat preservation chamber, be located at burner, melting chamber burner, feeding tower on the bell, it is characterized in that: at indoor deaerator, filter and the electrically heated rod of being provided with of the intensification between melting and heat preservation chamber and aluminium liquid delivery outlet.
Described electrically heated rod is connected with temperature controller.
Described melting and heat preservation chamber is provided with flat-flame burner and aluminium water temperature sensor.
Described filter middle and lower part is provided with an aluminium liquid passage.
Described body of heater, the following low-temperature space of its liquid level uses aluminosilicate fiberboard, composite calcium silicate plate, and posts thermal reflecting coating between every layer of warming plate of furnace lining.The above high temperature position part of liquid level has then adopted the splendid import nano-thermal-insulating plate of heat-insulating property.
This efficient suboxides scaling loss high alumina water quality aluminium alloy melting furnace according to above technical scheme proposition, by setting up indoor deaerator, filter and the electrically heated rod of intensification between melting and heat preservation chamber and aluminium liquid delivery outlet, simultaneously make long-flame burner into flat-flame burner again, make flame not contact aluminium liquid, increased the flame radiation area, be incubated the change of burner structure simultaneously, reduced the distance of burner between aluminium liquid liquid level, made that melting and heat preservation chamber heating space diminishes, the flame heat transfer area strengthens; But also can control the temperature of heat up indoor aluminium liquid and atmosphere separately, and guaranteeing normally to use under the prerequisite of deliverability, reduce the heat up temperature of indoor aluminium liquid and atmosphere of fusing as much as possible, significantly reduced aluminium liquid oxidation scaling loss and hydrogen.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Among the figure: the 11-liquid outlet of 9-filter 10-intensification chamber, 1-body of heater 2-electrically heated rod 3-deaerator 4-temperature controller 5-bell 6-flat-flame burner 7-feeding tower 8-melting and heat preservation chamber
The specific embodiment
This efficient suboxides scaling loss high alumina water quality aluminium alloy is as shown in the figure concentrated melting furnace, comprise body of heater 1, intensification chamber 10, bell 5, melting and heat preservation chamber 8, be located at burner, melting chamber burner 6, feeding tower 7 on the bell, it is characterized in that: in the intensification chamber 10 between melting and heat preservation chamber 8 and aluminium liquid delivery outlet 11, deaerator 3, filter 9 and electrically heated rod 2 are set.
Described electrically heated rod 2 is connected with temperature controller 4.
Be provided with flat-flame burner and aluminium water temperature sensor in the described melting and heat preservation chamber 8.
Described filter 9 middle and lower parts are provided with an aluminium liquid passage.
This technical scheme had both made aluminium liquid keep the better quality state before casting by indoor deaerator, filter and the electrically heated rod of being provided with of the intensification between melting and heat preservation chamber and aluminium liquid delivery outlet.
Rejected by the filter of newly establishing and to have formed impurity in the process of heating, by being arranged on the deaerator (this deaerator can make ceramic degasification rod or rotation degasification level) behind the filter, use is through cryodesiccated pure argon gas, disperse to enter aluminium water liquid in the minute bubbles mode, catch and combine with it behind the bubble hydrogen in the aluminium liquid and rise and take liquid level out of.By a near electrically heated rod that directly inserts the band special substance shell of aluminium liquid that deaerator, is provided with, the aluminium liquid that is flowed out by the melting and heat preservation chamber is carried out hyperthermic treatment, directly thermal energy transfer give is flowed out aluminium liquid before the delivery outlet by electrically heated rod, to replenish the thermal loss in filter and the degassing processing process, make between quality, hydrogen content and the energy consumption of aluminium water to be kept perfect balance.For the heating properties that makes electrically heated rod is able to effective performance, this electrically heated rod is controlled by the temperature control instrument.
Simultaneously again by being arranged on the flat-flame burner of fusing intensification chamber, improve the flame profile of intensification chamber burner, prevent that flame from directly contacting liquid aluminum and causing oxidization burning loss, improve intensification chamber burner heat transfer efficiency, reduce intensification chamber aluminium liquid the oxidation oxidization burning loss, reduced because the aluminium liquid hydrogen that high temperature causes increases problem, thereby improve the integrated heat efficiency and the aluminium water quality of this melting furnace.Through practical on-site measurement: this aluminum alloy melting holding furnace ton aluminium consumes that natural gas reduces by 5%, deslagging refining agent consumption reduces 20%, degasification with inert gas consumption reduce by 20%, aluminium liquid hydrogen content is 0.15CC/100AL, and under the prerequisite that cuts down the consumption of energy, also improved the quality of aluminium water, reached final goal of the present invention.
Claims (4)
1, a kind of efficient suboxides scaling loss high alumina water quality aluminum alloy melting holding furnace, comprise body of heater (1), intensification chamber (10), bell (5), melting and heat preservation chamber (8), be located at melting chamber burner (6), feeding tower on the bell, it is characterized in that: at indoor deaerator (3), filter (9) and the electrically heated rod (2) of being provided with of intensification that is positioned between melting and heat preservation chamber (8) and the aluminium liquid delivery outlet (11).
2, a kind of efficient suboxides scaling loss high alumina water quality aluminum alloy melting holding furnace as claimed in claim 1, it is characterized in that: described electrically heated rod (2) is connected with temperature controller (4).
3, a kind of efficient suboxides scaling loss high alumina water quality aluminum alloy melting holding furnace as claimed in claim 1 is characterized in that described filter (9) middle and lower part is provided with an aluminium liquid passage.
4, a kind of efficient suboxides scaling loss high alumina water quality aluminum alloy melting holding furnace as claimed in claim 1, it is characterized in that: described melting and heat preservation chamber (8) is provided with flat-flame burner and aluminium water temperature sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200608233U CN201269692Y (en) | 2008-10-13 | 2008-10-13 | High-efficiency aluminum alloy melting and heat preservation stove with low oxidization burning loss and high molten aluminum quality |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200608233U CN201269692Y (en) | 2008-10-13 | 2008-10-13 | High-efficiency aluminum alloy melting and heat preservation stove with low oxidization burning loss and high molten aluminum quality |
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| Publication Number | Publication Date |
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| CN201269692Y true CN201269692Y (en) | 2009-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008200608233U Expired - Fee Related CN201269692Y (en) | 2008-10-13 | 2008-10-13 | High-efficiency aluminum alloy melting and heat preservation stove with low oxidization burning loss and high molten aluminum quality |
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| CN (1) | CN201269692Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102618732A (en) * | 2012-04-18 | 2012-08-01 | 重庆烁鑫工业炉制造有限公司 | Continuous multistage refining and degassing keeping furnace for molten aluminum |
| CN103353225A (en) * | 2013-07-17 | 2013-10-16 | 绥中伊菲人工晶体科技有限公司 | Molten aluminum heat preserving furnace for high-pressure casting |
| US20130269482A1 (en) * | 2012-04-14 | 2013-10-17 | C. Edward Eckert | Recuperated isothermal melter and related methods |
| CN103968666A (en) * | 2014-05-26 | 2014-08-06 | 苏州卡迪亚铝业有限公司 | Smelting furnace for producing aluminium or aluminium alloy |
| CN104567434A (en) * | 2015-01-06 | 2015-04-29 | 辽宁伊菲科技股份有限公司 | Gravity aluminum melting furnace and aluminum melting method |
| CN105972999A (en) * | 2016-06-12 | 2016-09-28 | 辽宁伊菲科技股份有限公司 | Molten aluminum heat preservation heat reflection furnace |
| CN110715549A (en) * | 2019-09-23 | 2020-01-21 | 宁波兴展旺节能科技有限公司 | Transformation method of metal melting furnace |
-
2008
- 2008-10-13 CN CNU2008200608233U patent/CN201269692Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130269482A1 (en) * | 2012-04-14 | 2013-10-17 | C. Edward Eckert | Recuperated isothermal melter and related methods |
| US8926892B2 (en) * | 2012-04-14 | 2015-01-06 | C. Edward Eckert | Recuperated isothermal melter and related methods |
| CN102618732A (en) * | 2012-04-18 | 2012-08-01 | 重庆烁鑫工业炉制造有限公司 | Continuous multistage refining and degassing keeping furnace for molten aluminum |
| CN102618732B (en) * | 2012-04-18 | 2014-07-09 | 重庆烁鑫工业炉制造有限公司 | Continuous multistage refining and degassing keeping furnace for molten aluminum |
| CN103353225A (en) * | 2013-07-17 | 2013-10-16 | 绥中伊菲人工晶体科技有限公司 | Molten aluminum heat preserving furnace for high-pressure casting |
| CN103353225B (en) * | 2013-07-17 | 2016-04-27 | 辽宁伊菲科技股份有限公司 | A kind of high-pressure casting aluminium liquid holding furnace |
| CN103968666A (en) * | 2014-05-26 | 2014-08-06 | 苏州卡迪亚铝业有限公司 | Smelting furnace for producing aluminium or aluminium alloy |
| CN104567434A (en) * | 2015-01-06 | 2015-04-29 | 辽宁伊菲科技股份有限公司 | Gravity aluminum melting furnace and aluminum melting method |
| CN105972999A (en) * | 2016-06-12 | 2016-09-28 | 辽宁伊菲科技股份有限公司 | Molten aluminum heat preservation heat reflection furnace |
| CN110715549A (en) * | 2019-09-23 | 2020-01-21 | 宁波兴展旺节能科技有限公司 | Transformation method of metal melting furnace |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090708 Termination date: 20141013 |
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| EXPY | Termination of patent right or utility model |