CN102338561A - Foamed ceramic gas crucible - Google Patents
Foamed ceramic gas crucible Download PDFInfo
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- CN102338561A CN102338561A CN2011102671242A CN201110267124A CN102338561A CN 102338561 A CN102338561 A CN 102338561A CN 2011102671242 A CN2011102671242 A CN 2011102671242A CN 201110267124 A CN201110267124 A CN 201110267124A CN 102338561 A CN102338561 A CN 102338561A
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Abstract
The invention relates to the technical field of a foamed ceramic heating system, and particularly relates to a foamed ceramic gas crucible, aiming to solve the problems of single structure, low heat exchange efficiency and high energy consumption of the existing crucible. The foamed ceramic gas crucible comprises a cylindrical single crucible body, and is characterized in that the exterior of the single crucible body is provided with a foamed ceramic layer, and the exterior of the foamed ceramic layer is connected with a kiln wall through a plurality of side wall positioning bricks; a sealed cavity is formed between the kiln wall and the foamed ceramic layer, the upper end of the sealed cavity is provided with a smoke exhaust system, and the lower end of the sealed cavity is provided with a gas flame channel; and a tangential included angle is formed between the centre line of the gas flame channel and an circumferential diameter intersecting with the bottom of the single crucible body, and a bottom included angle is formed between the centre line of the gas flame channel and the bottom surface of the single crucible body. The foamed ceramic gas crucible can fully satisfy the requirement of polycrystalline silicon on the smelting temperature and atmosphere, so that the whole foamed ceramics are used as a heat source for the crucible radiation and heat conduction and the crucible can be continuously and evenly heated.
Description
Technical field
The present invention relates to foamed ceramics heating system technical field, especially a kind of foamed ceramics combustion gas crucible of melting processing usefulness of fusing point higher metal.
Background technology
Existing crucible kind is a lot; Its structure and performance respectively have characteristics; Material, the use occasion made are also different, are a kind of ceramic crucible of CN101256054A like patent publication No., and the plan view shape of crucible body is circular; Open top; The crucible body refers to the crucible body of oxide such as aluminium oxide, magnesia or zirconia ceramics material, is provided with under shed in the bottom of crucible body, and the diameter proportion of the diameter of under shed and the upper shed of crucible body is 1: 5～15; The ratio of the height dimension of the bottom face of crucible body to crucible body top end face and the diameter dimension of crucible body upper shed is 5: 1～5, this ceramic crucible do not fuse into the metal of containing or do not form alloy and do not influence the product quality of Nano metal powder with the Sheng metal.And for example patent publication No. is the quartz ceramic crucible of CN102153086A; The stress of its crucible bottom disperses; The bottom of crucible is the arc surface transition; With patent publication No. be a kind of ceramic crucible of CN2310302Y, the shape of ceramic crucible is made for the big inverted cone shape in the little bottom of oral area, these all are a kind of single crucible easy structure.
Pot furnace is that crucible is placed in the periodic kiln, utilizes the high temperature in the kiln, crucible good fire resistance properties and high-temperature stability, and in crucible with a kind of Thermal Equipment of material fusion, be widely used in industries such as glass, metallurgy.Reducing crucible furnace (kiln) can use electric energy to carry out radiation heating as thermal source, but also using gases or liquid fuel heat.Pot furnace is when adopting gas to act as a fuel, and flame directly washes away crucible usually, local heating's non-uniform temperature, and exhaust gas temperature is high, so heat exchange efficiency is low, energy consumption is high.
Summary of the invention
The objective of the invention is in order to solve the problem that existing crucible structure is single, heat exchange efficiency is low, energy consumption is high; A kind of foamed ceramics combustion gas crucible of reasonable in design is provided; Utilize foamed ceramics and crucible property separately; Both are combined into one effectively, realize the melting process to some fusing point higher metal, it is with the novel gas crucible of foamed ceramics as combustion system; With the smelting temperature that satisfies polysilicon and the demand of atmosphere, promptly with the reducing crucible furnace (kiln) of foamed ceramics heating system.
Above-mentioned technical problem of the present invention mainly is able to solve through following technical proposals: a kind of foamed ceramics combustion gas crucible; Comprise cylindrical single crucible body; The outside that it is characterized in that described single crucible body is provided with the foamed ceramics layer, and the outside of foamed ceramics layer links to each other with the kiln wall through some sidewall location bricks; Form sealed cavity between kiln wall and the foamed ceramics layer, the upper end of sealing cavity is provided with smoke evacuation system, and the lower end of sealing cavity is provided with the gas flame road; Crossing circle diameter of described gas flame road center line and single crucible body bottom becomes a tangential angle, and gas flame road center line becomes a bottom angle with single crucible body bottom surface.
Reducing crucible furnace (kiln) uses very extensive at metallurgy industry, carborundum or carborundum graphite crucible can satisfy the high temperature requirement of common metal melting.The foamed ceramics layer adopts novel ceramic material, have good temperature resistance can, good thermal shock resistance and enough intensity, high porosity, high-specific surface area and stronger heat transfer characteristics, can be applied to the design of gas burner.The foamed ceramics aperture is generally 0.4mm～5mm, and porosity can reach 70%～90%; The foamed ceramics combustion technology has adopted and the diverse combustion system of direct combustion technology, has overcome the deficiency of direct combustion technology, and premixed gas burns in the foamed ceramics space; Strengthened the stability of flame; Greatly changed flame structure, flame front thickness increases, and chamber temperature is evenly distributed.Foamed ceramics can change its porosity, aperture, material etc. according to actual needs, to guarantee the needs of thermal shock resistance, intensity and heat conductivility.During actual the use, can establish the some spots firearm and pass the kiln wall and lead to the sealed cavity that forms between kiln wall and the foamed ceramics layer.
The flame of fuel burner nozzle ejection arrives the foamed ceramics of bottom through the gas flame road; Premixed gas is in the foamed ceramics internal combustion; Produce high-temperature flue gas, high-temperature flue gas flows from the bottom to top, the heating foamed ceramics; Foamed ceramics is passed to sidewall of crucible through radiation, heat conduction, convection current with heat, and burnt gas gathers by smoke evacuation system discharges.Arrange burner through the bottom, will have the combustion flame of certain-length to spray into foamed ceramics, utilize the high porosity and the heat transfer characteristic of foamed ceramics, make foamed ceramics integral body become the thermal source of crucible, realize evenly heating continuously crucible.
As preferably, the bottom of described single crucible body is provided with the bottom support brick, and bottom support brick top is passed the foamed ceramics layer and is connected with the bottom of single crucible body, and the bottom is connected with at the bottom of the kiln.Single crucible body adds material and has certain weight, and several bottom support bricks evenly are arranged on the concentric circles, and the bottom support brick adopts carborundum (SiC) material to make.
As preferably, the burner system is equipped with at the inlet position in described gas flame road, and described burner system comprises combustion air, gas quantity adjusting device.Comprise a premixer in the gas flame road, the burner system can be provided with burner duty controller in addition, to satisfy the needs of automated job.
As preferably, described sidewall location brick branch is set as several layers, and every layer of sidewall location brick comprises some single bricks, and some single bricks are evenly distributed along foamed ceramics layer outer wall.The size of single brick is according to the volume settings of single crucible body, and sidewall location brick adopts high-temperature refractory to make.
As preferably, the top of described foamed ceramics layer is provided with fire-resistant cotton or lightweight refracrory, and the last plane of fire-resistant cotton flushes with the upper edge hole of single crucible body.The exhaust opening of smoke evacuation system is arranged on the below of fire-resistant cotton, and for the simplification of manufacture craft, fire-resistant cotton is auxilliary to be located on the cylindrical of single crucible body upper part, and compresses the top margin of foamed ceramics layer and kiln wall, and exhaust opening directly is opened in kiln coping edge.
As preferably, the internal diameter of described fire-resistant cotton cooperates with the external diameter of single crucible body, and the external diameter of fire-resistant cotton equates with kiln wall external diameter.Fire-resistant cotton becomes the sealing shape with single crucible body, fire-resistant cotton and foamed ceramics layer, kiln coping are sealed and matched.
As preferably, be provided with chamfering between at the bottom of the wall face of described kiln wall and the kiln, the entry design of gas flame road (6) is in this chamfering plane.Process one when making at the bottom of Yao Qiang and the kiln, can be used as the part of kiln wall at the bottom of the kiln, the processing in the easy design gas flame road on chamfering plane and the installation of burner system.
As preferably, the foam ceramic material that described foamed ceramics layer adopts is carborundum (SiC) and alundum (Al (Al2O3) mixture; The thickness of foamed ceramics layer is 1/5th to 1/10th of single crucible body diameter, and the foamed ceramics porosity is 70%～90%, and the aperture is 2mm～5mm.The setting purpose of the material of foamed ceramics layer, thickness, porosity is the effect that reaches output the best, energy-conservation the best when making the crucible operation.
As preferably, the span of the angle between described gas flame road center line and the single crucible body bottom surface is 15 °～45 °.The flame spray angle to crucible influenced by thermal uniformity bigger, single crucible body profile is the face of cylinder, the profile of foamed ceramics layer is the face of cylinder also, and the bottom is the plane, the gas flame road leads to foamed ceramics layer and single crucible body bottom position.
As preferably, the span of the tangential angle (β) that crossing circle diameter of described gas flame road center line and single crucible body bottom forms is 0～90 °.Gas flame road jet is angle of the single crucible body of court top inclination not only, and selects a best angle towards the external round tangential direction of single crucible.
Effective effect of the present invention is: fully satisfy the smelting temperature of polysilicon and the demand of atmosphere, utilize the high porosity and the heat transfer characteristic of foamed ceramics, make foamed ceramics integral body become the thermal source of the radiation and the heat conduction of crucible, realize the evenly heating continuously to crucible.
Description of drawings
Fig. 1 is a kind of structural representation of the present invention.
Fig. 2 is the A-A sectional structure sketch map of Fig. 1 of the present invention.
Fig. 3 is an a kind of pair of gas flame road structural representation of the present invention.
Fig. 4 is a kind of four gas flame road structural representations of the present invention.
Fig. 5 is a kind of structural representation that adds premixer, igniter of the present invention.
Among the figure: 1. kiln wall, 2. foamed ceramics layer, 3. single crucible body, 4. smoke evacuation system, 5. burner system; 6. gas flame road, 7. at the bottom of the kiln, 8. sidewall location brick, 9. bottom support brick, 10. fire-resistant cotton; 11. igniter, 12. premixers, α. bottom angle, β. the tangential angle.
The specific embodiment
Pass through embodiment below, and combine accompanying drawing, do further bright specifically technical scheme of the present invention.
Embodiment one, referring to Fig. 1, and a kind of foamed ceramics combustion gas of present embodiment crucible; The core of innermost layer is cylindrical single crucible body 3, the foamed ceramics layer 2 that outer wrap one deck of single crucible body 3 adopts carborundum and alundum (Al mixture to make, and the outside of foamed ceramics layer 2 links to each other with kiln wall 1 through sidewall location brick 8; As shown in Figure 2; Sidewall location brick 8 is provided with two-layer, and every layer of sidewall location brick 8 comprises 6 single bricks, and 6 single bricks are evenly distributed along foamed ceramics layer 2 outer wall.
Like this; Between kiln wall 1 and foamed ceramics layer 2, just formed sealed cavity, the space at the bottom of foamed ceramics layer 2 bottom the sealing cavity comprises and the kiln between 7, the upper end of sealing cavity is provided with smoke evacuation system 4; The exhaust opening of smoke evacuation system 4 is arranged on the top margin of kiln wall 1; The top of foamed ceramics layer 2 is provided with fire-resistant cotton 10, and fire-resistant cotton 10 last plane flushes with the upper edge hole of single crucible body 3, and fire-resistant cotton 10 is annular; The external diameter sealing of fire-resistant cotton 10 internal diameter and single crucible body 3, the end face of fire-resistant cotton 10 following ring surface and kiln wall 1, foamed ceramics layer 2 seals simultaneously.Be provided with 4 equally distributed bottom support bricks 9 in the bottom of single crucible body 3, bottom support brick 9 upper ends and single crucible body 3 bottom connections, the lower end with 7 be connected at the bottom of the kiln.
The lower end of sealed cavity is provided with circular gas flame road 6 between kiln wall 1 and foamed ceramics layer 2; Wherein be provided with chamfering between 7 at the bottom of the wall face of kiln wall 1 and the kiln; The entry design in gas flame road 6 is in this chamfering plane; Gas flame road 6 is established two, and is as shown in Figure 3, and burner system 5 is housed on the gas flame road 6.The tangential angle β that the crossing circle diameter in of the center line in gas flame road 6 and single crucible body 3 bottom forms is 90 °, and gas flame road 6 center lines become bottom angle=40 ° with single crucible body 3 bottom surfaces.R among the figure is the external diameter of foamed ceramics layer 2, and r is the internal diameter of single crucible body 3, and r0 is 1/2 concentric circles of single crucible body 3 base diameters, and by visible among the figure, 1/2 concentric circles of the center line in gas flame road 6 and crucible body 3 base diameters is tangent.
Embodiment two; Agent structure is identical with embodiment one; Gas flame road 6 is established four; As shown in Figure 4, the tangential angle β that the crossing circle diameter in of the center line in gas flame road 6 and single crucible body 3 bottom forms is 45 °, and gas flame road 6 center lines become bottom angle=40 ° with single crucible body 3 bottom surfaces.R is the internal diameter of single crucible body 3 among the figure, and r0 is 1/2 concentric circles of single crucible body 3 base diameters, and by visible among the figure, 1/2 concentric circles of the center line in gas flame road 6 and crucible body 3 base diameters is tangent.
Embodiment three; As shown in Figure 5, basic structure is identical with embodiment one, in gas flame road 6, adds a premixer 12; Combustion gas is fully mixed; And pass kiln wall 1 and lead between kiln wall 1 and the foamed ceramics layer 2 in the sealed cavity that forms establishing four igniters 11, with burning gases more fully, reach purpose of energy saving.
The foregoing description is to explanation of the present invention, is not to qualification of the present invention, any structure after the simple transformation of the present invention is all belonged to protection scope of the present invention.
Claims (10)
1. foamed ceramics combustion gas crucible; Comprise cylindrical single crucible body (3); The outside that it is characterized in that described single crucible body (3) is provided with foamed ceramics layer (2), and the outside of foamed ceramics layer (2) links to each other with kiln wall (1) through some sidewall location bricks (8); Form sealed cavity between kiln wall (1) and the foamed ceramics layer (2), the upper end of sealing cavity is provided with smoke evacuation system (4), and the lower end of sealing cavity is provided with gas flame road (6); Crossing circle diameter of described gas flame road (6) center line and single crucible body (3) bottom becomes a tangential angle (β), and gas flame road (6) center line becomes a bottom angle (α) with single crucible body (3) bottom surface.
2. a kind of foamed ceramics combustion gas crucible according to claim 1; The bottom that it is characterized in that described single crucible body (3) is provided with bottom support brick (9); Bottom support brick (9) top is passed foamed ceramics layer (2) and is connected with the bottom of single crucible body (3), and the bottom is connected with (7) at the bottom of the kiln.
3. a kind of foamed ceramics combustion gas crucible according to claim 1 and 2 is characterized in that burner system (5) is equipped with at the inlet position in described gas flame road (6), and described burner system (5) comprises combustion air, gas quantity adjusting device.
4. a kind of foamed ceramics combustion gas crucible according to claim 1; It is characterized in that described sidewall location brick (8) branch is set as several layers; Every layer of sidewall location brick (8) comprises some single bricks, and some single bricks are evenly distributed along foamed ceramics layer (2) outer wall.
5. according to claim 1 or 2 or 4 described a kind of foamed ceramics combustion gas crucibles; The top that it is characterized in that described foamed ceramics layer (2) is provided with fire-resistant cotton (10) or lightweight refracrory, and the last plane of fire-resistant cotton (10) flushes with the upper edge hole of single crucible body (3).
6. a kind of foamed ceramics combustion gas crucible according to claim 5 is characterized in that the internal diameter of described fire-resistant cotton (10) cooperates with the external diameter of single crucible body (3), and the external diameter of fire-resistant cotton (10) equates with Yao Qiang (1) external diameter.
7. a kind of foamed ceramics combustion gas crucible according to claim 1 and 2 is characterized in that being provided with chamfering between (7) at the bottom of wall face and the kiln of described kiln wall (1), and the entry design of gas flame road (6) is in this chamfering plane.
8. according to claim 1 or 2 or 4 described a kind of foamed ceramics combustion gas crucibles, it is characterized in that the foam ceramic material that described foamed ceramics layer (2) adopts is carborundum (SiC) and alundum (Al (Al2O3) mixture; The thickness of foamed ceramics layer (2) is 1/5th to 1/10th of single crucible body (3) diameter, and the foamed ceramics porosity is 70%～90%, and the aperture is 2mm～5mm.
9. a kind of foamed ceramics combustion gas crucible according to claim 1 is characterized in that the span of the bottom angle (α) between described gas flame road (6) center line and single crucible body (3) bottom surface is 15 °～45 °.
10. a kind of foamed ceramics combustion gas crucible according to claim 1 is characterized in that the span of the tangential angle (β) that the crossing circle diameter in described gas flame road (6) center line and single crucible body (3) bottom forms is 0～90 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102671242A CN102338561A (en) | 2011-09-09 | 2011-09-09 | Foamed ceramic gas crucible |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102671242A CN102338561A (en) | 2011-09-09 | 2011-09-09 | Foamed ceramic gas crucible |
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| CN102338561A true CN102338561A (en) | 2012-02-01 |
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| CN2011102671242A Pending CN102338561A (en) | 2011-09-09 | 2011-09-09 | Foamed ceramic gas crucible |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914151A (en) * | 2012-11-20 | 2013-02-06 | 昆山市大金机械设备厂 | Molten metal retainer |
| CN104233197A (en) * | 2014-09-30 | 2014-12-24 | 苏州普京真空技术有限公司 | Novel crucible |
| CN105935601A (en) * | 2016-06-27 | 2016-09-14 | 江阴市正中科教器材有限公司 | Thermal insulation heating crucible |
| CN105964318A (en) * | 2016-06-27 | 2016-09-28 | 江阴市正中科教器材有限公司 | Annular heating crucible |
| CN106482511A (en) * | 2016-11-28 | 2017-03-08 | 无锡市莱达热工工程有限公司 | The furnace binding of metal smelting-furnace |
| CN106679416A (en) * | 2016-08-19 | 2017-05-17 | 佛山市凯特科科技有限公司 | Commercial efficient high-speed-combustion infrared pressure casting crucible aluminum smelting furnace |
| CN105480608B (en) * | 2016-01-08 | 2018-01-16 | 重庆合才化工有限公司 | A kind of chemical industry storage vat heater |
| CN114062413A (en) * | 2020-08-04 | 2022-02-18 | 中国科学院大连化学物理研究所 | Sample packaging mode for measuring heat capacity |
| CN117184531A (en) * | 2023-11-06 | 2023-12-08 | 常州裕能石英科技有限公司 | Automatic packing device for quartz crucible |
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| GB103232A (en) * | 1916-04-20 | 1917-01-18 | Ralph Halkett | Improvements in Gas Fired Crucible Furnaces. |
| US4693918A (en) * | 1985-08-09 | 1987-09-15 | Toshiba Ceramics, Ltd. | Tool for firing ceramics |
| WO2003035917A2 (en) * | 2001-10-24 | 2003-05-01 | Vallo Gabor | Method for processing magnesium containing scrap by melting in a vacuum furnace |
| CN201575696U (en) * | 2009-12-10 | 2010-09-08 | 平顶山市中泰伟业机电有限公司 | Gas furnace for metal melting |
| CN102175024A (en) * | 2011-02-24 | 2011-09-07 | 河南省四达仙龙实业有限公司 | Diesel oil and water steel-making furnace |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB103232A (en) * | 1916-04-20 | 1917-01-18 | Ralph Halkett | Improvements in Gas Fired Crucible Furnaces. |
| US4693918A (en) * | 1985-08-09 | 1987-09-15 | Toshiba Ceramics, Ltd. | Tool for firing ceramics |
| WO2003035917A2 (en) * | 2001-10-24 | 2003-05-01 | Vallo Gabor | Method for processing magnesium containing scrap by melting in a vacuum furnace |
| CN201575696U (en) * | 2009-12-10 | 2010-09-08 | 平顶山市中泰伟业机电有限公司 | Gas furnace for metal melting |
| CN102175024A (en) * | 2011-02-24 | 2011-09-07 | 河南省四达仙龙实业有限公司 | Diesel oil and water steel-making furnace |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914151A (en) * | 2012-11-20 | 2013-02-06 | 昆山市大金机械设备厂 | Molten metal retainer |
| CN104233197A (en) * | 2014-09-30 | 2014-12-24 | 苏州普京真空技术有限公司 | Novel crucible |
| CN105480608B (en) * | 2016-01-08 | 2018-01-16 | 重庆合才化工有限公司 | A kind of chemical industry storage vat heater |
| CN105935601A (en) * | 2016-06-27 | 2016-09-14 | 江阴市正中科教器材有限公司 | Thermal insulation heating crucible |
| CN105964318A (en) * | 2016-06-27 | 2016-09-28 | 江阴市正中科教器材有限公司 | Annular heating crucible |
| CN106679416A (en) * | 2016-08-19 | 2017-05-17 | 佛山市凯特科科技有限公司 | Commercial efficient high-speed-combustion infrared pressure casting crucible aluminum smelting furnace |
| CN106482511A (en) * | 2016-11-28 | 2017-03-08 | 无锡市莱达热工工程有限公司 | The furnace binding of metal smelting-furnace |
| CN114062413A (en) * | 2020-08-04 | 2022-02-18 | 中国科学院大连化学物理研究所 | Sample packaging mode for measuring heat capacity |
| CN117184531A (en) * | 2023-11-06 | 2023-12-08 | 常州裕能石英科技有限公司 | Automatic packing device for quartz crucible |
| CN117184531B (en) * | 2023-11-06 | 2024-01-19 | 常州裕能石英科技有限公司 | Automatic packing device for quartz crucible |
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Application publication date: 20120201 |