CN104142060A - Metallurgy heating furnace - Google Patents
Metallurgy heating furnace Download PDFInfo
- Publication number
- CN104142060A CN104142060A CN201410354673.7A CN201410354673A CN104142060A CN 104142060 A CN104142060 A CN 104142060A CN 201410354673 A CN201410354673 A CN 201410354673A CN 104142060 A CN104142060 A CN 104142060A
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- Prior art keywords
- infrared radiation
- high temperature
- thermal insulation
- wall
- temperature resistant
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 25
- 238000005272 metallurgy Methods 0.000 title abstract 4
- 230000005855 radiation Effects 0.000 claims abstract description 65
- 238000009413 insulation Methods 0.000 claims abstract description 14
- 239000000919 ceramic Substances 0.000 claims abstract description 8
- 239000000835 fiber Substances 0.000 claims abstract description 8
- 239000011819 refractory material Substances 0.000 claims abstract description 6
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 6
- 229910052878 cordierite Inorganic materials 0.000 claims abstract description 4
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000005245 sintering Methods 0.000 claims description 15
- 238000003723 Smelting Methods 0.000 claims description 12
- 238000010276 construction Methods 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 abstract 1
- 239000011195 cermet Substances 0.000 description 22
- 150000001875 compounds Chemical class 0.000 description 20
- 229910052863 mullite Inorganic materials 0.000 description 9
- 239000000463 material Substances 0.000 description 7
- 238000012546 transfer Methods 0.000 description 7
- 239000002131 composite material Substances 0.000 description 5
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 241000365446 Cordierites Species 0.000 description 4
- 239000011449 brick Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000003546 flue gas Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 238000000498 ball milling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052571 earthenware Inorganic materials 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000003870 refractory metal Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000005457 Black-body radiation Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000006253 efflorescence Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 206010037844 rash Diseases 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007592 spray painting technique Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Landscapes
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The invention provides a metallurgy heating furnace. The metallurgy heating furnace is high in energy utilization rate and long in service life. The metallurgy heating furnace comprises a furnace body, wherein a plurality of high-temperature-resistant infrared radiant panels are detachably installed on the inner wall of a hearth of the furnace body, an infrared radiation layer is arranged on the face, facing towards the interior of the hearth, of each high-temperature-resistant infrared radiant panel, and a thermal insulation layer is arranged on the face, facing towards the wall of the hearth, of each high-temperature-resistant infrared radiant panel; the infrared radiation layers are made of cordierite slabstone or silicon carbide plates, and the thermal insulation layers are ceramic fiber blankets. Due to the fact that the high-temperature-resistant infrared radiant panels with the thermal insulation layers are installed on the inner wall of the kiln furnace, absorbed energy can be evenly radiated to a product to be sintered. The thermal insulation layers are arranged on the back sides of the radiant panels, heat is prevented from being transmitted to the furnace wall, and thus energy can be transmitted to the product to be sintered through radiation. The service life of the kiln furnace is prolonged due to the high-temperature-resistant infrared radiant panels, economic benefits are improved, the requirement for the quality level of refractory materials of the wall of the kiln furnace can be reduced, and the furnace construction cost is reduced.
Description
Technical field
The present invention relates to a kind of smelting and heating.
Background technology
China's Industrial Stoves and Industrial Boiler are the main bodys of energy resource consumption, and the Industrial Stoves ubiquity thermal efficiency is low, the phenomenon that energy waste is larger.Low for the ubiquitous effective utilization rate of energy of Industrial Stoves, the problem that energy waste is larger, general taked Main Energy-saving Measures is both at home and abroad: (1) adopts the light weight type insulation material of high insulating effect as far as possible; (2) adopt far infrared energy-saving spray painting technology; (3) flue gas heat recovery; (4) black body radiation element power-saving technology.
Traditional approach is to adopt less light material and the insulation material brickwork of thermal capacitance, to reduce accumulation of heat and radiation loss.This power-economizing method, just heat " is blocked up " in burner hearth, do not need the available heat of the product of sintering to absorb, do not change " diffuse reflection " state of heat ray, do not solve the problem whether heat ray puts in place, so need the available heat of product of sintering still very low.People by heat Balance Calculation or test, find that body of heater accumulation of heat and radiation loss are up to 60%～70%, and need the available heat only 25%～30% of the product of sintering.
The thermal efficiency of heat accumulating type smelting and heating obtains raising by a relatively large margin; The application of infrared radiation coating subsequently, the available heat that has solved the product that needs sintering on the basis of high thermal effect absorbs problem, has further improved the thermal efficiency.
In industry kiln burner hearth, conduct heat and have: the convection heat transfer' heat-transfer by convection of the product radiation of Fire Radiation, burning, the radiation of the furnace wall surface of solids and furnace gas radiation and furnace gas.In simple terms, participate in the 3 kinds of basic objects that have of the interior heat exchanging process of kiln: furnace gas, furnace wall, heating and calcining thing.At 800 ℃, be that heat transfer between kiln gas and heating object mainly relies on convection heat transfer' heat-transfer by convection below; Between 800 ℃～1000 ℃, be to rely on convection current and radiation, when temperature, the heat conduction between kiln gas and heating object is main during higher than 1000 ℃ relies on far infrared radiation heat exchange simultaneously, and the heat 90% that heating object absorbs realizes by radiation heat transfer.Most of industry kiln burner hearth is interior by refractory brick, castable refractory, and fire-resistant light insulating brick or ceramic fibre are built by laying bricks or stones.These refractory materials have fire resistance, under high temperature, intensity is high, the characteristics such as stability height can meet kiln needs, but the far infrared transmissivity of these refractory materials generally in 0.35 left and right (as at 1100 ℃: chamotte brick: 0.35～0.65, mullite 0.4, aluminium oxide 0.18～0.52, refractory fibre 0.35), and the emissivity of coatings capable of preventing from far infrared radiation is 0.85～0.95.Infrared radiation heat transfer is exactly the radianting capacity heating object that utilizes infrared ray uniqueness, object is heated, at a certain temperature, heating object gives off the infrared waves with certain penetration capacity, make heating object generation molecular oscillation, produce energy level transition, the infrared ray of the certain wave band of radiation, thus produce heat.Its feature one is heat absorption object thermally equivalent, the 2nd, and heat from inside to outside, thereby reduced the heat time, improve energy utilization rate.
The basic weakness of far infrared coating technology is that coating is easily aging, and continuous efflorescence is in actual use dropped or by air-flow erosion, thermal infrared emissivity progressively decays, and loses infra red radiation function, and thermal effect is passed decline in time.
Summary of the invention
The object of the invention is to propose that a kind of energy utilization rate is high, the smelting and heating of long service life.
Smelting and heating of the present invention comprises body of heater, key is that the inboard wall of burner hearth of described body of heater is removably provided with some high temperature resistant infrared radiation panels, the one side of described high temperature resistant infrared radiation panel towards burner hearth inside is provided with infra-red radiation layer, and high temperature resistant infrared radiation panel is provided with thermal insulation layer towards the one side of hearth wall; Described infra-red radiation layer is made by cordierite or mullite or carborundum or corundum-mullite, and described thermal insulation layer is ceramic fiber blanket.
High temperature resistant infrared radiation panel at kiln inwall mounting strap band thermal insulation layer, its method phase total emissivity is 0.85～0.98, and adjusting angle as required, energy even is radiated on the product that needs sintering, also can and need the product of sintering to stack design infra-red radiation plate structure and radian according to kiln type simultaneously, the energy even absorbing is radiated on the product that needs sintering.The high temperature resistant infrared radiation panel back side has thermal insulation layer, can make energy as much as possible by radiation delivery to the product that needs sintering, its back temperature is compared low 300～500 ℃ with temperature in stove; High temperature resistant infrared radiation panel can increase the service life, and fiber liner particularly can the chalk retardation time, can solve airflow scouring damaged fiber liner equitemperature simultaneously, significantly extends kiln service life, increases economic efficiency.And, high temperature resistant infrared radiation panel is installed on furnace wall and can be slowed down the thermal shock that compact refractory material causes by flue gas rapid heat cycle and damage, can reduce the quality requirement of refractory material, reduce brickwork cost.High temperature resistant infrared radiation panel long service life, can reach 5～10 years, suitable with the projected life of Industrial Stoves and boiler, even higher.In actual use, far infrared radiation ability is unattenuated for Far infrared radiant panel, guarantees for a long time the energy-efficient of smelting and heating, and synthesis energy saving efficiency reaches 15～30%, compared with the prior art has further and improves.
Further, described high temperature resistant infrared radiation panel utilizes the compound anchor nails of cermet to be fixed on inboard wall of burner hearth, and the compound anchor nails of described cermet is three-decker, and skin is earthenware, internal layer is metal or cermet, the fine and close castable of intermediate layer for internal layer is wrapped up completely.Traditional metal anchorage, because oxidation-resistance property is poor, cannot meet the long-time application under hot environment, and ceramic anchoring piece is because the fragility problem of ceramic material own cannot guarantee to hang security reliability; And the compound anchor nails of cermet in the present invention, its skin is highly heatproof and shockproof dense ceramic tube, 1100 ℃ of water-cooleds are greater than 30 times, internal layer is refractory metal or cermet, there is certain resistance to high temperature oxidation characteristic, centre is high temperature resistant fine and close castable, it is sealant, have high strength simultaneously, can be used as structural support layers and use, room temperature compressive resistance is greater than 120MPa, rupture strength reaches 20MPa, can prevent refractory metal part or cermet oxidation, the compound anchor nails of above-mentioned cermet has multiple protective action, guarantees to hang stable and long-life; In three layers, any individual layer or two-layer damage all can not have influence on suspension security reliability, only have three layers to be damaged simultaneously and just likely to have influence on suspension, have improved reliability.
Further, be the connective stability between each layer of reinforcement metal Ceramic Composite anchor nails, the skin of the compound anchor nails of described cermet has internal and external threads, and the internal layer of the compound anchor nails of cermet has external screw thread; Or the skin of the compound anchor nails of described cermet has external screw thread, and the internal layer of the compound anchor nails of cermet has external screw thread.
Further, described every high temperature resistant infrared radiation panel all utilizes five compound anchor nails of cermet to be fixed on inboard wall of burner hearth, wherein four compound anchor nails of cermet are distributed in four angles of high temperature resistant infrared radiation panel, and all the other compound anchor nails of cermet are positioned at the central authorities of high temperature resistant infrared radiation panel.Above-mentioned five compound anchor nails of cermet have formed the figure by four triangle splicings, and wherein the compound anchor nails of any two cermets is damaged and also can not affected the equal suspension safety of high temperature resistant infrared radiation panel.
Further, the normal direction of described infra-red radiation layer, over against the product that needs sintering in burner hearth, as much as possible the energy even being absorbed is radiated on the product that needs sintering, improves capacity usage ratio.
Further, on described high temperature resistant infrared radiation panel, there is hollow convex to go out cavity and/or fin, to absorb the energy in more flue gas, and this energy is reflected back to heating workpiece.
Further, described high temperature resistant infrared radiation panel material is by 90 ~ 95 parts of cordierites or mullite or carborundum or corundum-mullite, 5 ~ 10 parts of composite mixed high infrared radiation material phosphor composings; Described composite mixed high infrared radiation material powder is by Fe
2o
355 ~ 75 parts, 15 ~ 30 parts of NiO, 5 ~ 10 parts of ZnO, MnO
20.5 ~ 1.5 part, 0.5 ~ 2 part of CoO, Cr
2o
33 ~ 5 parts, CeO
20.05 ~ 0.2 part, Er
2o
30.05 ~ 0.2 part, Nd
2o
30.05 ~ 0.2 part, Yb
2o
30.05 ~ 0.2 part of composition, adopts blend to grind, fill after saggar high temperature sintering, then forms through broken ball milling.
Smelting and heating of the present invention is provided with dismountable high temperature resistant infrared radiation panel, installs and convenient disassembly, and long service life, fixing reliable, capacity usage ratio and the service life that can greatly improve smelting and heating, there is good promotional value.
Accompanying drawing explanation
Fig. 1 is the chamber structure schematic diagram of smelting and heating of the present invention.
Fig. 2, the 3rd, the mounting structure schematic diagram of high temperature resistant infrared radiation panel of the present invention.
Fig. 4 is the structural representation of the compound anchor nails of cermet of the present invention.
The specific embodiment
Contrast accompanying drawing below, by the description to embodiment, the specific embodiment of the present invention is described in further detail as the effect of the mutual alignment between the shape of each related member, structure, each several part and annexation, each several part and operation principle etc.
Embodiment 1:
As shown in the figure, the present embodiment smelting and heating comprises body of heater, the inboard wall of burner hearth 1 of body of heater is removably provided with some high temperature resistant infrared radiation panels 2, the one side of described high temperature resistant infrared radiation panel 2 towards burner hearth inside is provided with infra-red radiation layer 21, and high temperature resistant infrared radiation panel 2 is provided with thermal insulation layer 22 towards the one side of hearth wall; The normal direction of infra-red radiation layer 21 is over against the product that needs sintering 3 in burner hearth.Wherein, the infra-red radiation layer 21 of high temperature resistant infrared radiation panel 2 is made by cordierite or mullite or carborundum or corundum-mullite, and thickness is about 10mm; The thermal insulation layer 22 of high temperature resistant infrared radiation panel 2 is ceramic fiber blanket, and thickness is about 5～20mm.
Every high temperature resistant infrared radiation panel 2 all utilizes five compound anchor nails 4 of cermet to be fixed on inboard wall of burner hearth 1, wherein four compound anchor nails 4 of cermet are distributed in four angles of high temperature resistant infrared radiation panel 2, and the compound anchor nails 4 of all the other cermets is positioned at the central authorities of high temperature resistant infrared radiation panel 2.The compound anchor nails 4 of described cermet is three-decker, and outer 41 is earthenware, and internal layer 42 is metal or cermet, and intermediate layer 43 is the fine and close castable that internal layer 42 is wrapped up completely; The skin 41 of the compound anchor nails 4 of described cermet has internal and external threads, and the internal layer 42 of the compound anchor nails 4 of cermet has external screw thread.
On high temperature resistant infrared radiation panel 2, there is fin 5, to absorb the energy in more flue gas, and this energy is reflected back to heating workpiece.Certainly, the cavity that fin 5 also can protrude by hollow replaces, and plays same effect.
High temperature resistant infrared radiation panel material is by 90 ~ 95 parts of cordierites or mullite or carborundum or corundum-mullite, 5 ~ 10 parts of composite mixed high infrared radiation material phosphor composings; Described composite mixed high infrared radiation material powder is by Fe
2o
355 ~ 75 parts, 15 ~ 30 parts of NiO, 5 ~ 10 parts of ZnO, MnO
20.5 ~ 1.5 part, 0.5 ~ 2 part of CoO, Cr
2o
33 ~ 5 parts, CeO
20.05 ~ 0.2 part, Er
2o
30.05 ~ 0.2 part, Nd
2o
30.05 ~ 0.2 part, Yb
2o
30.05 ~ 0.2 part of composition, adopts blend to grind, fill after saggar high temperature sintering, then forms through broken ball milling.
Claims (4)
1. the object of the invention is to propose that a kind of energy utilization rate is high, the smelting and heating of long service life.
2. smelting and heating of the present invention comprises body of heater, the inboard wall of burner hearth of described body of heater is removably provided with some high temperature resistant infrared radiation panels, the one side of described high temperature resistant infrared radiation panel towards burner hearth inside is provided with infra-red radiation layer, and high temperature resistant infrared radiation panel is provided with thermal insulation layer towards the one side of hearth wall; Described infra-red radiation layer is made by cordierite plate or carborundum plate, and described thermal insulation layer is ceramic fiber blanket.
3. at the high temperature resistant infrared radiation panel of kiln inwall mounting strap band thermal insulation layer, can make the energy even absorbing be radiated on the product that needs sintering.
4. the radiant panel back side has thermal insulation layer, stops heat to pass to furnace wall, can make energy as much as possible by radiation delivery to the product that needs sintering; High temperature resistant infrared radiation panel extends kiln service life, increases economic efficiency, and can reduce the credit rating requirement of the refractory material of kiln wall, reduces brickwork cost.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410354673.7A CN104142060B (en) | 2014-07-24 | 2014-07-24 | A kind of smelting and heating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410354673.7A CN104142060B (en) | 2014-07-24 | 2014-07-24 | A kind of smelting and heating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104142060A true CN104142060A (en) | 2014-11-12 |
| CN104142060B CN104142060B (en) | 2015-11-11 |
Family
ID=51851319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410354673.7A Active CN104142060B (en) | 2014-07-24 | 2014-07-24 | A kind of smelting and heating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104142060B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5017209A (en) * | 1988-05-19 | 1991-05-21 | Sumitomo Electric Industries, Ltd. | High temperature furnace with thermal insulation |
| CN2201644Y (en) * | 1994-07-30 | 1995-06-21 | 北京雷迪艾森新技术开发公司 | Photoelectric tube heating furnace |
| CN2299292Y (en) * | 1997-03-19 | 1998-12-02 | 葛世名 | Maintenance-free high infrared furnace wall reflecting appts. |
| CN2702259Y (en) * | 2004-04-13 | 2005-05-25 | 李树华 | Housing structure of electric furnace for energy-saving experiment |
| CN201837236U (en) * | 2010-06-21 | 2011-05-18 | 徐其明 | Infrared heating furnace for aluminum profile die |
| CN102230737A (en) * | 2011-06-24 | 2011-11-02 | 北京中太投资管理有限公司 | Energy-saving cone |
| CN202041080U (en) * | 2011-02-17 | 2011-11-16 | 湖南晟通科技集团有限公司 | Heating furnace |
-
2014
- 2014-07-24 CN CN201410354673.7A patent/CN104142060B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5017209A (en) * | 1988-05-19 | 1991-05-21 | Sumitomo Electric Industries, Ltd. | High temperature furnace with thermal insulation |
| CN2201644Y (en) * | 1994-07-30 | 1995-06-21 | 北京雷迪艾森新技术开发公司 | Photoelectric tube heating furnace |
| CN2299292Y (en) * | 1997-03-19 | 1998-12-02 | 葛世名 | Maintenance-free high infrared furnace wall reflecting appts. |
| CN2702259Y (en) * | 2004-04-13 | 2005-05-25 | 李树华 | Housing structure of electric furnace for energy-saving experiment |
| CN201837236U (en) * | 2010-06-21 | 2011-05-18 | 徐其明 | Infrared heating furnace for aluminum profile die |
| CN202041080U (en) * | 2011-02-17 | 2011-11-16 | 湖南晟通科技集团有限公司 | Heating furnace |
| CN102230737A (en) * | 2011-06-24 | 2011-11-02 | 北京中太投资管理有限公司 | Energy-saving cone |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104142060B (en) | 2015-11-11 |
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