CN201672799U - Environment-friendly high-efficient aluminum metal melting holding furnace with low burning loss - Google Patents

Environment-friendly high-efficient aluminum metal melting holding furnace with low burning loss Download PDF

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Publication number
CN201672799U
CN201672799U CN2010201976865U CN201020197686U CN201672799U CN 201672799 U CN201672799 U CN 201672799U CN 2010201976865 U CN2010201976865 U CN 2010201976865U CN 201020197686 U CN201020197686 U CN 201020197686U CN 201672799 U CN201672799 U CN 201672799U
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CN
China
Prior art keywords
molten bath
environment
furnace
aluminum metal
metal melting
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CN2010201976865U
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Chinese (zh)
Inventor
冼齐鸿
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佛山市中科炉业有限公司
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Priority to CN2010201976865U priority Critical patent/CN201672799U/en
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Publication of CN201672799U publication Critical patent/CN201672799U/en

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Abstract

The utility model discloses an environment-friendly high-efficient aluminum metal melting holding furnace with low burning loss. A furnace body of the furnace is provided with a molten bath in the middle, the front of the furnace body is provided with a soup opening and the rear part thereof is provided with a furnace door. A hearth is arranged above the molten bath and internally provided with a set of electric heating elements, the lower part of the molten bath is communicated with the lower part of the soup opening, and a preheating platform is arranged between the molten bath and the furnace door. For the melting holding furnace, the electric heating elements and a furnace lining are long in service life, aluminum melting is efficient and fast, aluminum material is low in burning loss, aluminum liquid is small in temperature fluctuation amplitude and oxidizing slags are few and easy to clean.

Description

Environment-friendly highly efficient hangs down scaling loss aluminum metal melting and heat preservation stove
Technical field
The utility model relates to aluminum metal melting and heat preservation stove technical field, and particularly a kind of environment-friendly highly efficient hangs down scaling loss aluminum metal melting and heat preservation stove.
Background technology
Aluminum metal melting and heat preservation stove mainly contains flame-type and electrical heating type two big classes.The flame-type stove generally uses coal, fuel oil or coal gas to act as a fuel, and can produce a large amount of gas pollutants and carbon emission during operation, can not adapt to the requirement of cleaner production and low emission.The electrical heating type stove with being easy to get property, the security of its fuel, need not to store in a warehouse and the zero-emission of heating process and being widely used.
Electrical heating type melting and heat preservation stove is divided into crucible type electric furnace and no crucible type electric furnace by whether disposing crucible.The crucible type electric furnace adopts heating tape or heating wire heating, needs first heating crucible then by the heat conduction heat fused aluminum metallic material of crucible, and the thermal efficiency is lower, and needs often to change crucible, use cost height; In case and crucible leaks, and will damage heater element, and may cause serious accident.No crucible type electric furnace generally adopts the Elema heating, the refractory material casting that corrodes with anti-aluminium or build into the molten bath by laying bricks or stones, the top in molten bath is adopted refractory material to build by laying bricks or stones and is surrounded a confined space that heat-insulating property is good, it is burner hearth, some Elemas are set in the top, molten bath, and be respectively arranged with the dog-house that is connected with the molten bath and get the soup mouth, no crucible type electric furnace directly heats aluminum in the molten bath by the Elema radiation, need not change crucible, solved the above-mentioned deficiency of crucible type electric furnace, become the first-selected product that the molten aluminium stove of various crucible types updates, represented the developing direction of aluminum metal melting and heat preservation stove.
But, also there is following shortcoming in existing no crucible type electric furnace: (1) directly joins solid aluminium in the aluminium liquid in molten bath, temperature of aluminum liquid can decline to a great extent more than 30 ℃ on the one hand, cause temperature of aluminum liquid to cross low and make die casting or founding operation interrupt, because of containing steam, air or greasy dirt in the solid aluminium, cause quick-fried the splashing of aluminium liquid to make Elema area load inequality on the Elema and damage easily on the other hand; (2) its mode of heating is the heat radiation heating aluminium liquid surface by Elema, melt the solid aluminium that is dipped in the aluminium liquid by heat conducting mode again, burn-off rate is extremely slow, in order to reach required melting efficiency, the temperature of burner hearth is risen to 900-960 ℃, and, compare 850-899 ℃ of warm area at this warm area, the oxidization burning loss rate of aluminium liquid significantly improves, and furnace lining also can accelerated ageing; (3) limit by burner hearth and skimming gate height and angle, oxidizing slag on molten bath and hearth wall cleaning difficulty, the long-term cleaning of oxidizing slag does not totally then cause the furnace lining corundum knurl of growing easily, finally makes lining durability shorten to 2-3, even 1 year; In addition, growing up unusually of corundum knurl will make it constantly close Elema, and causes the damage of Elema.
Fragile and the too short shortcoming of lining durability of Elema has been offset existing no crucible type electric furnace fully and need not to change the economy advantage that crucible obtains, and the difficulty that scarfing cinder brings even much larger than the trouble of changing crucible.
Summary of the invention
The purpose of this utility model is to provide the efficiently scaling loss of the low fusing of environment-friendly highly efficient fast aluminum metal melting and heat preservation stove of a kind of heater element low-loss, oxidizing slag easy to clean, the low scaling loss of aluminum and molten aluminium.
The technical solution that the utility model proposed is as follows:
A kind of environment-friendly highly efficient hangs down scaling loss aluminum metal melting and heat preservation stove, comprise body of heater, described body of heater middle part is provided with the molten bath, the body of heater front portion is provided with gets the soup mouth, the body of heater rear portion is provided with fire door, and top, described molten bath is provided with burner hearth, is provided with one group of electrical heating element in this burner hearth, bottom, described molten bath with get the Tang Kou bottom and be connected, between described molten bath and fire door, be provided with a pre-heating station.
One end of described pre-heating station is connected with the lower door frame of fire door, and the other end is connected with the top in described molten bath, and pre-heating station is from being a downtilt angles near fire door one end to the molten bath direction.
Relative airtight heating space of the common formation of described fire door, pre-heating station, molten bath and burner hearth.
Described upper furnace is provided with the electrical heating element of three or its integral multiple, and this electrical heating element adopts Elema or Electrothermic wire.
The environment-friendly highly efficient that designs according to such scheme hangs down scaling loss aluminum metal melting and heat preservation stove when carrying out melting the aluminium operation continuously, earlier the solid aluminium material is put on the pre-heating station from stove gate, on pre-heating station, carry out preheating, when being preheating to 200-450 ℃, push again among the molten bath that aluminium liquid is housed, go round and begin again.Electrical heating element heats solid aluminium on the pre-heating station and the liquid aluminium in the molten bath simultaneously, after the aluminium liquid in the molten bath reaches operation required amount and temperature, then can take out aluminium liquid in getting soup mouth place, carry out die casting or founding operation.
Molten aluminium operation reaches (such as 12 hours or 24 hours) behind the some cycles, if die casting or founding need carry out refining or slagging-off, at this moment, can open fire door and carry out refining or slagging-off, and use the oxidizing slag of scarfing cinder instrument cleaning molten bath and burner hearth.Because stove gate is enough big,, thereby also solved the problem that the corundum knurl misgrowth that causes thus and lining durability are lacked so slagging-off and scarfing cinder very smoothly and conveniently, have solved the difficult problem of scarfing cinder fully.
The utility model is provided with a pre-heating station between molten bath and fire door, make the solid aluminium material can preheating placed on it, push again after the preheating in the aluminium liquid in molten bath, changed the operating type among the aluminium liquid that existing no crucible type electric furnace directly joins solid aluminium the molten bath.As everyone knows, the area on the surface area of solid aluminium material aluminium liquid surface in the molten bath, and the surface temperature of initiate solid aluminium material only is equivalent to room temperature, so its efficient that absorbs heat this means that far above only relying on aluminium liquid surface, molten bath to absorb the melting efficiency of aluminum is largely increased.This basis has been arranged, and the temperature of burner hearth just need not be raised to 900-960 ℃ of warm area, gets final product and only need remain on 850-899 ℃ of warm area, so the oxidization burning loss rate of aluminium liquid also significantly reduces thereupon.Simultaneously, because the solid aluminium on the pre-heating station only is heated to 200-450 ℃, be again in enclosure space, so do not produce oxidation and scaling loss basically.
In addition, be preheating to 200-450 ℃ because the aluminum of solid is pushed into before the aluminium liquid, and weight only is controlled at the 6-8% of aluminium liquid in the molten bath, so cause the temperature of aluminum liquid range of decrease in the molten bath very little, have only 5-15 ℃, do not influence working continuously of aluminium die casting or founding.On the other hand, the steam on the aluminum, air and greasy dirt be all volatilizations after preheating, have avoided the quick-fried phenomenon that splashes on the heater element of aluminium liquid, the service life of having guaranteed heater element.
Compared with prior art, the utlity model has following beneficial effect:
Realize adding the hot work zero-emission, pollution-free, not consume crucible in, the oxide that produces in the stove is significantly reduced and be easy to and clear up, make prolong more than one times the service life of heater element and furnace lining than existing no crucible type electric furnace, thereby greatly promoted the economy advantage of stove, reduced the oxidization burning loss rate of aluminum when having improved the stove melting efficiency; In addition, supply in the soup process at continuous molten aluminium, the fluctuating range of temperature of aluminum liquid is very little, can guarantee the uninterrupted operation of aluminium die casting or founding, has high social and economic benefit.
Description of drawings
Fig. 1 is the structural representation of the low scaling loss aluminum metal melting and heat preservation stove of a kind of environment-friendly highly efficient of an embodiment of the utility model.
Among the figure, 1. fire door, 2. pre-heating station, 3. molten bath, 4. burner hearth is 5. got the soup mouth, 6. Elema, 7. aluminium ingot, 8. aluminium liquid, 9. body of heater.
The specific embodiment
By following embodiment the utility model is further elaborated.
Referring to shown in Figure 1, a kind of environment-friendly highly efficient hangs down scaling loss aluminum metal melting and heat preservation stove, and body of heater 9 is by fire door 1, pre-heating station 2, molten bath 3, burner hearth 4 and get soup mouth 5 five parts and constitute, and its working lining all adopts refractory material casting or builds by laying bricks or stones and forms.Molten bath 3 is arranged at the middle part of body of heater 9, get soup mouth 5 and be arranged at the front portion of body of heater 9, fire door 1 is arranged at the rear portion of body of heater 9, and burner hearth 4 is arranged at the top in molten bath 3, is provided with a pre-heating station 2 between molten bath 3 and fire door 1, one end of pre-heating station 2 is connected with the lower door frame of fire door 1, the other end links to each other with the top in molten bath 3, and pre-heating station 2 is higher near fire door 1 one ends, and from then on holds to molten bath 3 directions and be a downtilt angles, so that aluminium ingot 7 is pushed molten bath 3, generally be advisable with 5 ° of-30 ° of angles.Fire door 1, pre-heating station 2, molten bath 3 and burner hearth 4 form relative airtight spaces (being the melting and heat preservation chamber on the melting and heat preservation stove ordinary meaning), only stay 3 bottoms, molten bath and get soup mouth 5 bottoms and be connected for 8 outflows of aluminium liquid.On the top of burner hearth 4, be provided with the electrical heating element of three or its integral multiple, the electrical heating element of present embodiment adopts six Elemas 6.
The low scaling loss aluminum metal melting and heat preservation stove of this environment-friendly highly efficient is put into aluminium ingot 7 earlier and is carried out preheating on the pre-heating station 2 when carrying out melting the aluminium operation continuously, when being preheating to 200-450 ℃, pushes among the molten bath 3 that aluminium liquid 8 is housed again, and goes round and begins again.One group of Elema 6 heats aluminium ingot 7 on the pre-heating station 2 and the aluminium liquid 8 in the molten bath 3 by electric energy being converted into heat energy, after aluminium liquid 8 reaches operation required amount and temperature, then can take out aluminium liquid 8 getting soup mouth 5 places, carry out die casting or founding operation.
Molten aluminium operation reaches (such as 12 hours or 24 hours) behind the some cycles, if die casting or founding need carry out refining or slagging-off, at this moment, can open fire door 1 and carry out refining or slagging-off, and use the oxidizing slag of scarfing cinder instrument cleaning molten bath 3 and burner hearth 4.

Claims (5)

1. an environment-friendly highly efficient hangs down scaling loss aluminum metal melting and heat preservation stove, comprise body of heater, described body of heater middle part is provided with the molten bath, the body of heater front portion is provided with gets the soup mouth, the body of heater rear portion is provided with fire door, and top, described molten bath is provided with burner hearth, is provided with one group of electrical heating element in this burner hearth, bottom, described molten bath with get the Tang Kou bottom and be connected, it is characterized in that: between described molten bath and fire door, be provided with a pre-heating station.
2. environment-friendly highly efficient according to claim 1 hangs down scaling loss aluminum metal melting and heat preservation stove, it is characterized in that: an end of described pre-heating station is connected with the lower door frame of fire door, the other end links to each other with the top in described molten bath, and pre-heating station is from being a downtilt angles near fire door one end to the molten bath direction.
3. environment-friendly highly efficient according to claim 1 hangs down scaling loss aluminum metal melting and heat preservation stove, it is characterized in that: relative airtight heating space of the common formation of described fire door, pre-heating station, molten bath and burner hearth.
4. environment-friendly highly efficient according to claim 1 hangs down scaling loss aluminum metal melting and heat preservation stove, it is characterized in that: be provided with the electrical heating element of three or its integral multiple in described upper furnace, this electrical heating element adopts Elema.
5. environment-friendly highly efficient according to claim 1 hangs down scaling loss aluminum metal melting and heat preservation stove, it is characterized in that: be provided with the electrical heating element of three or its integral multiple in described upper furnace, this electrical heating element adopts Electrothermic wire.
CN2010201976865U 2010-05-12 2010-05-12 Environment-friendly high-efficient aluminum metal melting holding furnace with low burning loss CN201672799U (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN103471388A (en) * 2013-09-25 2013-12-25 梁刚 Molten aluminum heat insulation furnace
CN104949511A (en) * 2015-06-17 2015-09-30 朱可可 Taper double control automatic vacuum lead smelting furnace
US9188390B2 (en) 2012-08-23 2015-11-17 Chai-Long Yu Aluminum-based material melting apparatus
CN106440829A (en) * 2016-11-16 2017-02-22 攀枝花市仁通钒业有限公司 Afterheat-utilizing type electric-arc furnace
CN106895700A (en) * 2017-03-07 2017-06-27 重庆大学 A kind of aluminum alloy melting method
CN110360594A (en) * 2019-06-19 2019-10-22 张勇 A kind of preheating igniting method and device for electric melting furnace

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9188390B2 (en) 2012-08-23 2015-11-17 Chai-Long Yu Aluminum-based material melting apparatus
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
CN103471388A (en) * 2013-09-25 2013-12-25 梁刚 Molten aluminum heat insulation furnace
CN104949511A (en) * 2015-06-17 2015-09-30 朱可可 Taper double control automatic vacuum lead smelting furnace
CN106440829A (en) * 2016-11-16 2017-02-22 攀枝花市仁通钒业有限公司 Afterheat-utilizing type electric-arc furnace
CN106440829B (en) * 2016-11-16 2019-06-04 攀枝花市仁通钒业有限公司 Utilize residual heat type electric arc furnaces
CN106895700A (en) * 2017-03-07 2017-06-27 重庆大学 A kind of aluminum alloy melting method
CN106895700B (en) * 2017-03-07 2018-10-09 重庆大学 A kind of aluminum alloy melting method
CN110360594A (en) * 2019-06-19 2019-10-22 张勇 A kind of preheating igniting method and device for electric melting furnace
CN110360594B (en) * 2019-06-19 2020-09-15 北京金亚润环保科技有限公司 Preheating ignition method and device for electric melting furnace

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Granted publication date: 20101215

Termination date: 20130512