CN205561532U - Metal smelting stove - Google Patents
Metal smelting stove Download PDFInfo
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- CN205561532U CN205561532U CN201620211290.9U CN201620211290U CN205561532U CN 205561532 U CN205561532 U CN 205561532U CN 201620211290 U CN201620211290 U CN 201620211290U CN 205561532 U CN205561532 U CN 205561532U
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- smelting furnace
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Abstract
The utility model discloses a metal smelting stove, including stove bottom, brickwork, furnace roof wall body, furnace gate, furnace, wherein, the first half of furnace is hot flue gas chamber, and the metal that will be heated is placed to the latter half, be provided with the enhanced heat transfer layer that is used for improving the endothermic speed of metal between the first half of furnace and the latter half. The utility model discloses the heat transfer intensity that the heat transfer of metal smelting stove hot flue gas in the first half in with furnace is added the thermometal for the latter half is brought up to to tens of times more than the twice, directly results in exhaust gas temperature to reduce reducing calorific loss, the fuel combustion time has been shortened in the quickening of metal programming rate, can produce obvious energy -conserving effect.
Description
Technical field
This utility model belongs to metallurgical technology field, relates to a kind of energy-efficient metal smelting furnace.
Background technology
Metallurgy industry belongs to high energy consumption high pollution industry, and along with energy prices rise steadily, the consuming cost of fuel proportion in processing cost is more and more higher, and with a large amount of consumption of natural resources, substantial amounts of carbon emission and serious environmental pollution.Constantly explore new technology to reduce cost to reduce the fuel consumption in metallurgical furnace production process, related research institutes and manufacturing enterprise, reduce the pollution to environment simultaneously.
At present, energy-conservation and fuel the new invention new technique efficiently utilizing aspect of the metal smelting furnace of whole metallurgy industry is concentrated mainly on two aspects: one is the abundant burning being realized fuel by new technique；Two is recovery waste heat as much as possible.
But, in terms of the fully burning and recovery waste heat of above-mentioned fuel, current technology is the most highly developed, and the degree that reached capacity, it is difficult to carry out studying to improve the energy-efficient performance of smelting furnace at such aspect.
It is therefore necessary to develop research, to provide a kind of new having to differ from fully combustion technology or the technical scheme of recovery waste heat technology of fuel, thus improve heat utilization rate, to reach more energy-conservation purpose.
Summary of the invention
For solving the problems referred to above, the purpose of this utility model is to provide a kind of metal smelting furnace, improves heat utilization rate, to reach more energy-conservation purpose.
For achieving the above object, the technical solution of the utility model is:
A kind of metal smelting furnace, includes furnace bottom, furnace wall, furnace roof body of wall, fire door, burner hearth；Wherein, the top half of burner hearth is heat smoke room, and metal to be heated is placed in the latter half；The heat transmission strengthening layer of heat absorption speed for improving metal it is provided with between top half and the latter half of burner hearth.
Further, also including combustion system, the combustion system told includes air port and burner.
Further, Heat Conduction Material powder being sprayed into heat smoke room, powder gradually accumulates formation heat transmission strengthening layer.
Further, described heat transmission strengthening layer appearance is to the internal aperture gathering and being interconnected.
Further, described powder is sprayed into heat smoke room or another adapter road by the air port of combustion system, burner and is injected directly into heat smoke room.
Further, described heat transmission strengthening layer is close to metal surface.
Further, described heat transmission strengthening layer thermal radiation absorption ratio is more than 0.3.
Further, the thickness of described heat transmission strengthening layer is 0.5cm-20cm.
Compared to prior art, the heat of the heat smoke in top half in burner hearth is passed to the latter half and is heated the heat transfer intensity of metal and brings up to twice with up to decades of times by this utility model metal smelting furnace, directly result in exhaust gas temperature reduction minimizing thermal loss, metal programming rate is accelerated to shorten fuel combustion time, can produce obvious energy-saving effect.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in this utility model embodiment, in describing embodiment below, the required accompanying drawing used is briefly described, apparently, accompanying drawing in describing below is only embodiments more of the present utility model, to those skilled in the art, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the principle schematic of this utility model metal smelting furnace.
Metal smelting furnace diagram when Fig. 2 is to be not provided with heat transmission strengthening layer.
Fig. 3 is the A-A generalized section along Fig. 1.
Detailed description of the invention
This utility model embodiment provides a kind of energy-efficient metal smelting furnace, and it is by strengthening heat transfer in metallurgical process, to improve metal heat absorption.
In terms of heat transfer, in metal smelting furnace, the heat absorption of metal is that the convection heat transfer' heat-transfer by convection by metal surface (i.e. burner hearth top and the bottom separating surface) and metal surface absorb heat transfer two parts of radiation and complete.In nonferrous metallurgy smelting process, due to non-ferrous metal blackness the most relatively low (if the blackness of aluminum and aluminium alloy is less than 0.25), the lowest to thermal-radiating absorptance α, its surface of heated metal receive under radiant heat transfer mode the efficiency of heat the lowest (as aluminum and aluminium alloy receive only less than 30% come from furnace roof and furnace wall radiates the heat energy come)；It addition, convection heat transfer' heat-transfer by convection mode is limited to the limited area in metal surface and the limited flowing velocity of heat smoke, so the intensity of the convection heat transfer' heat-transfer by convection of metal current smelting furnace is the most extremely limited.
This utility model, by one heat transfer new solution, drastically increases convection current and the efficiency of radiant heat transfer and speed, it is possible to produce significant impact to whole metal smelting furnace is energy-saving and cost-reducing.
For making goal of the invention of the present utility model, feature, the advantage can be the most obvious and understandable, below in conjunction with the accompanying drawing in this utility model embodiment, technical scheme in this utility model embodiment is clearly and completely described, obviously, the embodiments described below are only a part of embodiment of this utility model, and not all embodiments.Based on the embodiment in this utility model, the every other embodiment that those skilled in the art is obtained, broadly fall into the scope of this utility model protection.
Term " first " in specification and claims of the present utility model and above-mentioned accompanying drawing, " second " etc. are for distinguishing similar object, without being used for describing specific order or precedence.Should be appreciated that the term of so use can exchange in the appropriate case, this only describes the differentiation mode used the object of same alike result when describing in embodiment of the present utility model.In addition, term " includes " and " having " and their any deformation, it is intended to cover non-exclusive comprising, to comprise the process of a series of unit, method, system, product or equipment to be not necessarily limited to those unit, but can include the most clearly listing or for intrinsic other unit of these processes, method, product or equipment.
It is described in detail individually below.
This utility model metal smelting furnace is by input Heat Conduction Material powder to heat smoke in metal smelting furnace and forms one layer of heat transmission strengthening layer between heated metal (solid-state or liquid).
As this utility model one embodiment, heat transfer layer gathers the aperture being interconnected from appearance to inside, heat transfer layer not requirement must condition of equivalent thickness, do not want the same isodensity of Seeking Truth yet.Heat smoke (metal surface area, is also the interfacial areas in burner hearth top and the bottom by convection heat transfer' heat-transfer by convection area ratio original convection heat transfer' heat-transfer by convection area during these apertures, approximate burner hearth area) increase several times to hundreds times, owing to convection heat transfer' heat-transfer by convection amount is directly proportional to flow area, thus enhance convection heat transfer' heat-transfer by convection speed.Secondly, aperture also improves the absorptance of convective heat-transfer coefficient and heat transfer layer.
As another embodiment of this utility model, the radiation absorption ratio of heat transfer layer is higher than 2-5 times of heated metal (solid or liquid), owing to the absorbtivity of radiant heat energy is directly proportional by object to the absorptance of object itself, the heat absorption rate that heat transfer layer comes for the radiation of burner hearth top half furnace wall refractory adds 2-5 times.Artificial black body can also be used.As long as it is demonstrated experimentally that the absorptance of heat transfer layer just can produce energy-saving effect higher than the absorptance of metal surface.
As another embodiment of this utility model, heat transfer layer material is high thermal conductivity materials, and in the case of cost is permitted, thermal conductivity is the highest more good, and the heat energy of absorption can pass to rapidly heated metal.In this utility model embodiment, the material of described heat transfer layer is based on carborundum.Certainly, use material based on more preferable Heat Conduction Material such as Graphene, more preferable effect can be obtained.Facts have proved, as long as heat transfer layer material conducts heat rate of the present utility model just can produce energy-saving effect more than 1w/mk, if material conducts heat rate can produce goodish effect more than 5w/mk, in this utility model embodiment, the thermal conductivity of described heat transfer layer material is 2w/mk-8w/mk.
Specifically, as it is shown in figure 1, this utility model metal smelting furnace includes furnace bottom 10, furnace wall 7, furnace roof body of wall 2, burner hearth, fire door 1 and combustion system；Wherein, the top half of burner hearth is heat smoke room 4, and the metal (including solid metallic 11 or liquid metal 12, this example is as a example by aluminium melting furnace) being smelted is placed in the latter half；Being provided with the heat transmission strengthening layer 8 of heat absorption speed for improving metal between top half and the latter half of burner hearth, the thickness of described heat transmission strengthening layer is 0.5cm-20cm, is of about 2cm in this utility model embodiment；Combustion system includes air port 5 and burner 3.When feeding intake, open fire door 1, after feeding intake, close fire door and prevent thermal loss.Having been carried out example as this utility model, described combustion system is disperse formula Regenerative Combustion System, and flame enters in burner hearth top half heat smoke room 4 from burner 3.
As shown in Figure 2, the air of fuel with preheating is sprayed into heat smoke room 4 by burner 3 and air port 5 by combustion system respectively, at this moment the heat smoke that combustion gas and air mixed combustion produce flows in heat smoke room 4 with certain speed, as in figure 2 it is shown, the arrow 1A indication that flame is along burner 3 enters burner hearth.
When there is no heat transmission strengthening layer, the heat smoke that flame produces produces convection heat transfer' heat-transfer by convection with heated metal (solid metallic 11 or liquid metal 12) surface downwards and directly heats metal (solid metallic 11 or liquid metal 12), as shown in Figure 2, high-temperature flue gas is along arrow 2A direction close to metal, and after heat exchange, low-temperature flue gas leaves metal along 4A direction.Another part high-temperature flue gas that flame produces along arrow 2A upwards furnace roof 2 with side, heat smoke room furnace wall 7 and top produce convection heat transfer' heat-transfer by convection heating side furnace wall 7 and the furnace roof 2 on top, furnace roof 2 body of wall on furnace wall 7 side and top produces infrared ray 6 after being heated and heat is invested with radiation mode the metal (solid metallic 11 or liquid metal 12) of the latter half.
After having heat transmission strengthening layer 8, as it is shown on figure 3, high-temperature flue gas is close along arrow 2A direction and enters heat transmission strengthening layer 8, after heat exchange, low-temperature flue gas flows out along 4A direction and leaves heat transmission strengthening layer 8.Another part high-temperature flue gas that flame produces along arrow 2A upwards furnace roof 2 with side, heat smoke room furnace wall 7 and top produce convection heat transfer' heat-transfer by convection heating side furnace wall 7 and the furnace roof 2 on top, furnace roof 2 body of wall on furnace wall 7 side and top produces infrared ray 6, with radiation mode, heat is invested heat transmission strengthening layer 8 after being heated.Heat carries out conduction of heat through heat transmission strengthening layer such as arrow 3A direction, heats metal.
In this utility model embodiment, the heat transmission strengthening layer 8 of one layer of about 2cm is set between the top half and the latter half of burner hearth, heat transmission strengthening layer 8 appearance is to the internal aperture gathering and being interconnected, and (thermal conductivity is more than 1w/mk, proportion 2.0-2.4 ton/m can to use common thermal conductive ceramic material3).As shown in Figure 3, combustion system provides suitable power to make heat smoke room 4 interior-heat flow of flue gas speed with the most consistent, at this moment heat smoke flows downward and produces convection current with heat transmission strengthening layer 8, heat smoke passes in and out from the numerous small holes of heat transmission strengthening layer 8, increase heat exchange area, considerably increase the heat that heat transmission strengthening layer absorbs.
Heat transmission strengthening layer 8 appearance makes heat transmission strengthening layer become a kind of artificial black matrix to the internal aperture being interconnected that gathers, thus considerably increase the heat transmission strengthening layer 8 absorption to emittance, in this utility model embodiment, the heat transmission strengthening layer 8 absorptance α > 0.6 to emittance.
Heat transmission strengthening layer 8 and metal (solid metallic 11 or liquid metal 12) intimate surface contact, the distance between it levels off to zero, and heat transfer rate will tend to infinity.
As another embodiment of this utility model, the heat transmission strengthening layer 8 of one layer of heat absorption speed increasing metal being made up of heat conduction refractory material is set between the top half and the latter half of burner hearth.The generation type of heat transmission strengthening layer 8 is to spray into the powder based on carborundum.Powder is sprayed into heat smoke room 4 or another adapter road by the air port 5 of combustion system, burner 3 and is injected directly into heat smoke room 4.At this moment powder gradually accumulates formation heat transmission strengthening layer 8, in cumulative process, part heat transmission strengthening layer 8 is internal leaves the densely covered aperture being interconnected, heat transmission strengthening layer 8 is the softest is close to metal (solid metallic 11 or liquid metal 12) surface the most firmly, absorptance α is about 0.6-0.7, i.e. about 2-3 times of aluminum metal.There is between heat transmission strengthening layer 8 and metal that this mode is formed the hole 9 of minimum.
This utility model forms heat transmission strengthening layer 8 by the method for input Heat Conduction Material powder in metallurgical furnace between heat smoke and heated metal (solid-state 11 or liquid 12), create the technical scheme of an applicable metallurgical furnace strengthening heat transfer.Top half fuel combustion in burner hearth can produce the heat of heat smoke pass to the latter half and be heated the heat transfer intensity of metal and bring up to twice with up to decades of times, improve heat utilization rate, directly result in exhaust gas temperature reduction minimizing thermal loss, metal programming rate is accelerated to shorten fuel combustion time, produces obvious energy-saving effect.
Another embodiment of this utility model provides the manufacture method of a kind of metal smelting furnace, comprises the steps:
Thering is provided a metal smelt furnace body, wherein, described metal smelt furnace body includes: furnace bottom 10, furnace wall 7, furnace roof body of wall 2, burner hearth, fire door 1 and combustion system；The top half of burner hearth is heat smoke room 4, and the metal (including solid metallic 11 or liquid metal 12, this example is as a example by aluminium melting furnace) being smelted is placed in the latter half；
Arranging the heat transmission strengthening layer 8 of one layer of heat absorption speed for improving metal between the top half and the latter half of burner hearth, the thickness of described heat transmission strengthening layer is 0.5cm-20cm, is of about 2cm in this utility model embodiment；
Burner 3 and burner are set in combustion system, spray into heat smoke room 4 for by the air of fuel Yu preheating.
When feeding intake, open fire door 1, after feeding intake, close fire door and prevent thermal loss.As in figure 2 it is shown, the arrow 1A indication that flame is along burner 3 enters in burner hearth top half heat smoke room 4.
As it is shown on figure 3, the high-temperature flue gas that flame produces enters heat transmission strengthening layer 8 along arrow 2A indication, absorb the heat in heat smoke through heat transmission strengthening layer 8.Another part high-temperature flue gas that flame produces along arrow 2A upwards furnace roof 2 with side, heat smoke room furnace wall 7 and top produce convection heat transfer' heat-transfer by convection heating side furnace wall 7 and the furnace roof 2 on top, the furnace roof body of wall 2 on furnace wall 7 side and top produces infrared ray 6, with radiation mode, heat is invested heat transmission strengthening layer 8 after being heated.The heat energy of absorption such as arrow 3A direction is carried out conduction of heat by heat transmission strengthening layer 8, heats metal (solid metallic 11 or liquid metal 12).
In this utility model embodiment, in heat transmission strengthening layer 8 appearance to the internal aperture gathering and being interconnected, (thermal conductivity is more than 1w/mk, proportion 2.0-2.4 ton/m can to use common thermal conductive ceramic material3).As shown in Figure 3, combustion system provides suitable power to make heat smoke room 4 interior-heat flow of flue gas speed with the most consistent, at this moment heat smoke flows downward and produces convection current with heat transmission strengthening layer 8, heat smoke passes in and out from the numerous small holes of heat transmission strengthening layer 8, increase heat exchange area, considerably increase the heat that heat transmission strengthening layer absorbs.
Heat transmission strengthening layer 8 appearance makes heat transmission strengthening layer become a kind of artificial black matrix to the internal aperture being interconnected that gathers, thus considerably increase the heat transmission strengthening layer 8 absorption to emittance, in this utility model embodiment, the heat transmission strengthening layer 8 absorptance α > 0.6 to emittance.Heat transmission strengthening layer 8 and metal (solid metallic 11 or liquid metal 12) intimate surface contact, the distance between it levels off to zero, and heat transfer rate will tend to infinity.
As this utility model one embodiment, the generation type of heat transmission strengthening layer 8 is to spray into the powder based on carborundum.Powder is sprayed into heat smoke room 4 or another adapter road by the air port 5 of combustion system, burner 3 and is injected directly into heat smoke room 4.At this moment powder gradually accumulates formation heat transmission strengthening layer 8, in cumulative process, part heat transmission strengthening layer 8 is internal leaves the densely covered aperture being interconnected, heat transmission strengthening layer 8 is the softest is close to metal (solid metallic 11 or liquid metal 12) surface the most firmly, absorptance α is about 0.6-0.7, i.e. about 2-3 times of aluminum metal.There is between heat transmission strengthening layer 8 and metal that this mode is formed the hole 9 of minimum.
The metal smelting furnace that this utility model method manufactures forms heat transmission strengthening layer 8 by the method for input Heat Conduction Material powder in metallurgical furnace between heat smoke and heated metal (solid-state 11 or liquid 12), create the technical scheme of an applicable metallurgical furnace strengthening heat transfer.Top half fuel combustion in burner hearth can produce the heat of heat smoke pass to the latter half and be heated the heat transfer intensity of metal and bring up to twice with up to decades of times, improve heat utilization rate, directly result in exhaust gas temperature reduction minimizing thermal loss, metal programming rate is accelerated to shorten fuel combustion time, produces obvious energy-saving effect.
This utility model can be used for all non-ferrous metal aluminum, magnesium, potassium, sodium, calcium, strontium, barium, copper, lead, zinc, stannum, cobalt, nickel, antimony, hydrargyrum, cadmium, bismuth, gold, silver, platinum, ruthenium, rhodium, palladium, osmium, iridium, beryllium, lithium, rubidium, caesium, titanium, zirconium, hafnium, vanadium, niobium, tantalum, tungsten, molybdenum, gallium, indium, thallium, germanium, rhenium, lanthanum, cerium, praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutecium, scandium, yttrium, silicon, boron, selenium, tellurium, arsenic, thorium.Ferrous metal ferrum (steel), manganese, chromium can also be played energy-saving effect by the part strengthening convection heat transfer' heat-transfer by convection.
In sum, above example only in order to the technical solution of the utility model to be described, is not intended to limit；Although this utility model being described in detail with reference to above-described embodiment, it will be understood by those within the art that: the technical scheme described in the various embodiments described above still can be modified by it, or wherein portion of techniques feature is carried out equivalent；And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of this utility model each embodiment technical scheme.
Claims (8)
1. a metal smelting furnace, includes furnace bottom, furnace wall, furnace roof body of wall, fire door, burner hearth, it is characterised in that: the top half of burner hearth is heat smoke room, and metal to be heated is placed in the latter half；The heat transmission strengthening layer of heat absorption speed for improving metal it is provided with between top half and the latter half of burner hearth.
2. metal smelting furnace as claimed in claim 1, it is characterised in that: also including combustion system, the combustion system told includes air port and burner.
3. metal smelting furnace as claimed in claim 1, it is characterised in that: Heat Conduction Material powder is sprayed into heat smoke room, and powder gradually accumulates formation heat transmission strengthening layer.
4. metal smelting furnace as claimed in claim 3, it is characterised in that: described heat transmission strengthening layer appearance is to the internal aperture gathering and being interconnected.
5. metal smelting furnace as claimed in claim 3, it is characterised in that: described powder is sprayed into heat smoke room or another adapter road by the air port of combustion system, burner and is injected directly into heat smoke room.
6. the metal smelting furnace as described in claim 4 or 5, it is characterised in that: described heat transmission strengthening layer is close to metal surface or is partly submerged in metal.
7. the metal smelting furnace as described in claim 4 or 5, it is characterised in that: described heat transmission strengthening layer thermal radiation absorption is more than 0.3 than α.
8. the metal smelting furnace as described in claim 4 or 5, it is characterised in that: the thickness of described heat transmission strengthening layer is 0.5cm-20cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620211290.9U CN205561532U (en) | 2016-03-18 | 2016-03-18 | Metal smelting stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620211290.9U CN205561532U (en) | 2016-03-18 | 2016-03-18 | Metal smelting stove |
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| Publication Number | Publication Date |
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| CN205561532U true CN205561532U (en) | 2016-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620211290.9U Withdrawn - After Issue CN205561532U (en) | 2016-03-18 | 2016-03-18 | Metal smelting stove |
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| CN (1) | CN205561532U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105627745A (en) * | 2016-03-18 | 2016-06-01 | 深圳市龙瑞泰兴能源环境科技有限公司 | Metal smelting furnace |
-
2016
- 2016-03-18 CN CN201620211290.9U patent/CN205561532U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105627745A (en) * | 2016-03-18 | 2016-06-01 | 深圳市龙瑞泰兴能源环境科技有限公司 | Metal smelting furnace |
| WO2017157278A1 (en) * | 2016-03-18 | 2017-09-21 | 广州众煌电子科技有限公司 | Metal smelting furnace |
| CN105627745B (en) * | 2016-03-18 | 2018-09-07 | 深圳市龙瑞泰兴能源环境科技有限公司 | A kind of metal smelting furnace |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20160907 Effective date of abandoning: 20180907 |
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| AV01 | Patent right actively abandoned |