CN101852543B - Inner structure of high-efficiency energy-saving aluminum and aluminum alloy isothermal smelting furnace - Google Patents
Inner structure of high-efficiency energy-saving aluminum and aluminum alloy isothermal smelting furnace Download PDFInfo
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- CN101852543B CN101852543B CN 201010208811 CN201010208811A CN101852543B CN 101852543 B CN101852543 B CN 101852543B CN 201010208811 CN201010208811 CN 201010208811 CN 201010208811 A CN201010208811 A CN 201010208811A CN 101852543 B CN101852543 B CN 101852543B
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Abstract
The invention provides an inner structure of a high-efficiency energy-saving aluminum and aluminum alloy isothermal smelting furnace, a partition wall is arranged at the middle part of a hearth, the hearth is divided into a furnace starting melting region and a heating region through the partition wall, a feeding well and a circulating pump are arranged outside a furnace body, the inlet of the circulating pump is communicated with the hearth of the heating region, the outlet of the circulating pump is communicated with the feeding well, the feeding well is communicated with the hearth of the furnace starting melting region, the partition wall is provided with an inclined surface with an inclination angle of 3 to 20 degrees, a guiding region is arranged at one end of the partition wall, and the guiding region is arranged between the furnace starting melting region and the heating region and is in the shape of a spindle-shaped small-curvature arc. When in working, an aluminum liquid in the furnace starting melting region passes through the guiding region and enters the heating region in a more advantageous flowing state. The inner structure of the aluminum and aluminum alloy isothermal smelting furnace enhances the heat exchange between the aluminum liquid and a heater, reduces the scouring erosion of the aluminum liquid to a wall surface and enables the temperature to be more uniform by adjusting the flowing direction of the aluminum liquid in the heating region.
Description
Technical field
The present invention relates to the isothermal smelting of a kind of aluminium melting industry aluminium and aluminium alloy, relate in particular to a kind of energy-efficient aluminium and aluminum alloy isothermal smelting furnace structure in the stove, belong to the metal smelt technical field.
Background technology
Have many difficulties in aluminium and the aluminium alloy smelting, at first, with respect to other metals, aluminium has the higher specific heat capacity and the latent heat of fusion, and is secondly, very easily oxidized during the very little and high temperature of the blackness of aluminium.For the industrial melting of aluminium and aluminium alloy, at present most widely used both at home and abroad is reflective smelting furnace, secondly is induction melting furnace and crucible type smelting furnace, and wherein reflective smelting furnace accounts for the overwhelming majority.These several kinds of type of furnaces all have pluses and minuses separately, but a significant common ground is exactly that energy consumption is higher relatively, and the thermal efficiency is lower.
The isothermal melting technique is a kind of brand-new smelting technology, and this technology energy resource consumption and metal loss are all very low, is a kind of energy-efficient smelting technology.The isothermal melting is carried out melting to furnace charge exactly under steady temperature, the aluminum melt temperature in the isothermal smelting burner hearth changes in very among a small circle, and temperature everywhere is almost consistent.Heater directly inserts in the melted material, and heat is effectively passed to melted material through the heat conduction tube wall, and furnace charge is carried out three-dimensional heating, and melt temperature is consistent, and composition is even, can formation temperature gradient and thermosphere phenomenon, and the melt quality improves greatly.The heater heat is almost absorbed by aluminium liquid entirely, has improved the thermal efficiency, and burnt gas does not contact with motlten metal, thereby reduces oxidational losses, and furnace binding is simple, and floor space is little, and investment greatly descends.Isothermal melting temperature of aluminum liquid in process of production remains on 680～760 ℃, adds cold burden to reinforced well simultaneously, and institute of system calorific requirement is supplied with by immersion heater.Flowing of aluminium liquid can be strengthened the exchange capability of heat between aluminium liquid and the heater in the burner hearth, but is not that the moving speed of aluminium flow is big more, and heater power is big more, and the efficient of system is just high more.Thermal treatment zone aluminium fluid power is not extremely important with the abundant heat exchange of heater, if aluminium flow reason owing to resistance when the thermal treatment zone has been avoided heater, or has only part aluminium liquid to carry out heat exchange through heater, and the heat of heater just can not make full use of so; Can not be absorbed by aluminium liquid but the heater local temperature is very high, influence the thermal efficiency, cause system temperature inhomogeneous, and can influence the life-span of heater; Characteristic stroke spatial variations according to fluid can produce eddy flow, and eddy flow not only consumes energy but also strengthened the erosion of washing away to wall.
This shows that the isothermal smelting internal structure is bigger for the influence of whole system.
Summary of the invention
The objective of the invention is to overcome the deficiency that prior art exists, a kind of energy-efficient aluminium and aluminum alloy isothermal smelting furnace structure in the stove are provided, be intended to guarantee that the aluminium flow is moving smooth and easy in aluminium and the aluminum alloy isothermal smelting furnace; Strengthen aluminium liquid and the effective heat exchange of immersion heater; Improve system thermal efficiency, eliminate temperature non in the stove, improve the metal quality; Reduce aluminium liquid to the washing away of furnace lining, prolong service life of equipment.
The object of the invention is realized through following technical scheme:
A kind of energy-efficient aluminium and aluminum alloy isothermal smelting furnace structure in the stove, the middle part of burner hearth is provided with partition wall, and partition wall is divided into burner hearth and opens the stove fusion zone and the thermal treatment zone; Body of heater is furnished with reinforced well and circulating pump outward; Inlet of circulating pump is connected with the burner hearth of the thermal treatment zone, and outlet of circulating pump is connected with reinforced well, and reinforced well is connected with the burner hearth that opens the stove fusion zone; Characteristics are: said partition wall has the inclined plane at 3～20 ° of inclination angles, and an end of partition wall is provided with the water conservancy diversion district; The water conservancy diversion district is arranged on opens between the stove fusion zone and the thermal treatment zone, is spindle shape arc.The water conservancy diversion district designs according to fluid behaviour, mainly act as to change the moving direction of aluminium flow, makes aluminium liquid evenly flow through the thermal treatment zone as much as possible, improves heat exchange efficiency, reduces the temperature Centralized phenomenon.In addition, whole isothermal smelting system also is provided with reinforced well and circulating pump, and the pipeline that is installed in thermal treatment zone headwall links to each other with reinforced well through circulating pump, the pipeline that comes out by reinforced well company again with open the stove fusion zone and be communicated with, form closed circuit like this.The immersion heater that the heat of whole system is installed by the thermal treatment zone during ordinary production provides, and aluminium liquid that therefore flows and the exchange capability of heat between the heater directly affect overall system efficiency.
Further, above-mentioned a kind of energy-efficient aluminium and aluminum alloy isothermal smelting furnace structure in the stove, wherein, each interface is set to the arc surface of different radians in the said burner hearth.
Further, above-mentioned a kind of energy-efficient aluminium and aluminum alloy isothermal smelting furnace structure in the stove, wherein, said reinforced well is connected with the burner hearth that opens the stove fusion zone with 3～15 ° of angles through circulation line.
Substantive distinguishing features and obvious improvement that technical scheme of the present invention is outstanding are mainly reflected in:
1. an end of partition wall is provided with the water conservancy diversion district, and the aluminium liquid that opens during work in the stove fusion zone passes through the water conservancy diversion district, under the effect of water conservancy diversion district, gets into the thermal treatment zone with more favourable flow regime, improves heat exchange efficiency, reduces the temperature Centralized phenomenon; The fairshaped curve shape in water conservancy diversion district makes by opening the aluminium liquid with certain speed that flows out the stove fusion zone and flows into the thermal treatment zone more uniformly, effectively reduces the aluminium direction of motion simultaneously and changes the energy loss that causes;
2. each interface is set to the arc surface of different radians all according to aluminium flow condition emotionally in the burner hearth, effectively reduces the aluminium liquid recycle stream and forms vortex in the part when moving;
3. connect the material well and get into burner hearth with 3～20 ° of angles with the pipeline that opens the stove fusion zone; This angle matches at the inclination angle of opening stove fusion zone one side with partition wall; Both effectively eliminated aluminium liquid and formed vortex, and can make again and open the stove fusion zone and have certain delivered payload capability and satisfy and open the stove requirement at the partition wall place;
4. this aluminium and aluminum alloy isothermal smelting furnace structure in the stove have been strengthened the heat exchange between aluminium liquid and the heater, reduce the erosion of washing away of aluminium liquid to wall, and adjustment thermal treatment zone aluminium flow is to making temperature more even.
Description of drawings
Below in conjunction with accompanying drawing technical scheme of the present invention is described further:
Fig. 1: the schematic top plan view of isothermal smelting system;
The A-A cross-sectional schematic of Fig. 2: Fig. 1;
Fig. 3: the moving sketch map of the inner aluminium flow of burner hearth.
The implication of each Reference numeral sees the following form among the figure:
| Reference numeral | Implication | Reference numeral | Implication | Reference numeral | Implication |
| 1 | Circulating pump | 2 | Reinforced well | 3 | Circulation line |
| Reference numeral | Implication | Reference numeral | Implication | Reference numeral | Implication |
| 4 | Body of heater | 5 | |
6 | |
| 7 | Open the |
8 | Open burner | 9 | The water |
| 10 | |
11 | Heating element heater | 12 | |
| 13 | The |
14 | Immersion heater | 15 | |
| 16 | |
701 | |
101 | The partition wall inclined plane |
The specific embodiment
Like Fig. 1, shown in Figure 2; Aluminium and aluminum alloy isothermal smelting furnace comprise circulating pump 1, reinforced well 2, circulation line 3, circulation line 16 and body of heater 4, and body of heater 4 side walls are installed fire door 6, overfall 15 is set; Headwall is installed and is opened stove combustion system 8, and liner 5 is lining in the body of heater 4.The middle part of burner hearth is provided with partition wall 10; Partition wall 10 is divided into burner hearth and opens the stove fusion zone 7 and the thermal treatment zone 13, and body of heater is furnished with reinforced well 2 and circulating pump 1 outward, and the import of circulating pump 1 is connected through the burner hearth of circulation line 16 with the thermal treatment zone 13; The outlet of circulating pump 1 is connected with reinforced well 2; Reinforced well 2 is connected with the burner hearth that opens stove fusion zone 7 with 3～15 ° of angles through circulation line 3, and this angle needs to match at the inclination angle of opening stove fusion zone one side with partition wall, both can effectively eliminate aluminium liquid and form vortex at the partition wall place; Can make again and open the stove fusion zone and have certain delivered payload capability and satisfy and to open the stove requirement, thereby form a system that is interconnected.Heating element heater 11 is installed on the partition wall 10, and immersion heater 14 is installed at 13 tops, the thermal treatment zone, and immersion heater 14 vertically stretches into the burner hearth of the thermal treatment zone 13, and the thermal treatment zone 13 side walls, one end is provided with weif orifice 12.As shown in Figure 3, partition wall 10 has the inclined plane 101 (following fluid flow characteristics) at 3～20 ° of inclination angles, and an end of partition wall 10 is provided with water conservancy diversion district 9, and water conservancy diversion district 9 is arranged on opens between the stove fusion zone 7 and the thermal treatment zone 13, is spindle shape small curve arc; The fairshaped curve shape in water conservancy diversion district can make by opening the aluminium liquid with certain speed that flows out the stove fusion zone and flow into the thermal treatment zone more uniformly, effectively reduces the aluminium direction of motion simultaneously and changes the energy loss that causes; This water conservancy diversion district designs according to fluid behaviour, mainly act as the change flow direction, makes aluminium liquid evenly flow through the thermal treatment zone 13.Each interface is set to the arc surface (like fillet 701) of different radians all according to aluminium flow condition emotionally in the burner hearth, effectively reduces the aluminium liquid recycle stream and forms vortex in the part when moving.
The circulation path of aluminium liquid mainly receives the influence of burner hearth internal structure in burner hearth, and fluid because inertia is arranged, can form vortex during from the pipeline flow-direction large-diameter pipeline of minor diameter between tube wall.This phenomenon is very disadvantageous in system, and this situation also can take place when fluid flows into little space by large space.In addition, fluid can be avoided the bigger place of resistance to the less direction motion of resistance in flow process, and therefore in the thermal treatment zone, aluminium liquid can be avoided heater friction, is unfavorable for the heat transmission like this.Body of heater internal structure of the present invention has taken into full account the characteristic of fluid; As shown in Figure 3; Aluminium liquid is got into certain angle by circulation line 3 and opens stove fusion zone 7; Under the acting in conjunction of opening stove fusion zone lopsidedness face 101, partition wall and headwall junction fillet 701 and circulation line 3 inclination angles, effectively prevented to produce vortex between partition wall and the main flow bundle, guarantee that simultaneously opening stove fusion zone 7 has certain capacity.Aluminium liquid can pass through water conservancy diversion district 9 before opening the 7 inflow thermals treatment zone 13, stove fusion zone.Water conservancy diversion district 9 integral body present arc, can effectively accept incoming flow near opening stove fusion zone one end curve shape, and energy loss that minimizing causes because of flow direction changes and aluminium liquid are to the souring of wall.Aluminium liquid through water conservancy diversion district 9 near the thermal treatment zone one end after since the special shape aluminum liquid movement direction in this place change; Make fluid flow direction mainly be divided into two parts; What part speed was bigger flows to like A among Fig. 3 owing to inertia moves along the curved surface tangential direction; Another part flows along the wall direction and flows to like B among Fig. 3, and aluminium liquid area coverage when getting into the thermal treatment zone increases like this, reduces and distributes uneven phenomenon in the flow set.
Chamber structure is avoided the generation of vortex effectively, reduces energy loss and to the furnace lining local scour, increases effective circulation aluminium liquid measure and improved exchange capability of heat.Rationally change the moving direction of aluminium flow, cooperate the non-homogeneous immersion heater of arranging to make Heating Zone Temperature more even, prevent localized hyperthermia or low temperature, improve metal quality.This aluminium and aluminum alloy isothermal smelting furnace structure in the stove need not to increase auxiliary equipment, and be simple in structure, improved the effective heat exchange efficiency of aluminium liquid and immersion heater, reduced aluminium liquid washing away furnace lining.
What need understand is: the above only is a preferred implementation of the present invention; For those skilled in the art; Under the prerequisite that does not break away from the principle of the invention, can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (3)
1. energy-efficient aluminum or aluminum alloy isothermal smelting structure in the stove, the middle part of burner hearth is provided with partition wall, and partition wall is divided into burner hearth and opens the stove fusion zone and the thermal treatment zone; Body of heater is furnished with reinforced well and circulating pump outward; Inlet of circulating pump is connected with the burner hearth of the thermal treatment zone, and outlet of circulating pump is connected with reinforced well, and reinforced well is connected with the burner hearth that opens the stove fusion zone; It is characterized in that: said partition wall has the inclined plane at 3～20 ° of inclination angles; One end of partition wall is provided with the water conservancy diversion district, and the water conservancy diversion district is arranged on opens between the stove fusion zone and the thermal treatment zone, is spindle shape arc.
2. a kind of energy-efficient aluminum or aluminum alloy isothermal smelting structure in the stove according to claim 1 is characterized in that: each interface is set to the arc surface of different radians in the said burner hearth.
3. a kind of energy-efficient aluminum or aluminum alloy isothermal smelting structure in the stove according to claim 1, it is characterized in that: said reinforced well is connected with the burner hearth that opens the stove fusion zone with 3～15 ° of angles through circulation line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010208811 CN101852543B (en) | 2010-06-24 | 2010-06-24 | Inner structure of high-efficiency energy-saving aluminum and aluminum alloy isothermal smelting furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010208811 CN101852543B (en) | 2010-06-24 | 2010-06-24 | Inner structure of high-efficiency energy-saving aluminum and aluminum alloy isothermal smelting furnace |
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| Publication Number | Publication Date |
|---|---|
| CN101852543A CN101852543A (en) | 2010-10-06 |
| CN101852543B true CN101852543B (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010208811 Expired - Fee Related CN101852543B (en) | 2010-06-24 | 2010-06-24 | Inner structure of high-efficiency energy-saving aluminum and aluminum alloy isothermal smelting furnace |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2783752B2 (en) * | 1993-11-29 | 1998-08-06 | 株式会社宮本工業所 | Melting furnace for aluminum waste |
| DE10014711A1 (en) * | 2000-03-24 | 2001-09-27 | Hertwich Engineering Ges M B H | Gas-heated dual-chamber furnace for immersion melting of contaminated aluminum scrap, includes pyrolysis chamber in which hot flue gases purify charge |
| CN101586912B (en) * | 2009-06-18 | 2010-10-20 | 苏州新长光热能科技有限公司 | Aluminum and aluminum alloy isothermal smelting furnace |
| CN101699204A (en) * | 2009-11-06 | 2010-04-28 | 苏州新长光热能科技有限公司 | Efficient and environment-friendly melting furnace for recycling the scrap aluminum |
| CN201751783U (en) * | 2010-06-24 | 2011-02-23 | 苏州新长光热能科技有限公司 | Inner structure of high-efficiency and energy-saving aluminum and aluminum alloy isothermal smelting furnace |
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| CN101852543A (en) | 2010-10-06 |
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