CN104764324A - Silicon dioxide high-temperature phase-change furnace - Google Patents
Silicon dioxide high-temperature phase-change furnace Download PDFInfo
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- CN104764324A CN104764324A CN201510153660.8A CN201510153660A CN104764324A CN 104764324 A CN104764324 A CN 104764324A CN 201510153660 A CN201510153660 A CN 201510153660A CN 104764324 A CN104764324 A CN 104764324A
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Abstract
The invention provides a silicon dioxide high-temperature phase-change furnace. The furnace comprises a furnace body which is provided with a housing; a crucible is arranged in the housing; a crucible body is cylindrical; a plurality of supporting blocks are arranged at the bottom part of the crucible; an upper cover is arranged at the upper end of the crucible; a heating area is formed in the bottom part of the crucible and from the bottom of the crucible to 3/4-1/3 part of the crucible; a heating device is arranged at the outside of the crucible at the heating area; flame-retardant insulation layers are arranged around the crucible at the heating area; lower insulation layers are arranged below the crucible and at the inner sides of the flame-retardant layer; upper insulation layers are arranged around the crucible above the heating area. According to the furnace, the insulation layers are arranged at the outside of the crucible, so that the insulation time of the furnace body is increased; the crucible body is cylindrical, thus the crucible can be uniformly stressed and difficulty damaged during the heating and phase-change of silicon dioxide, and the crucible is free of influence of the expansion of silicon dioxide; in addition, the crucible is prepared from Al2O3, mullite and silicon dioxide and can perform heat insulation for 6 to 12 hours under the temperature of 1500 DEG C, so that the SiO2 high-temperature phase-change rate can be reached.
Description
Technical field
The present invention relates to a kind of high-temperature phase-change stove, particularly a kind of silica high-temperature phase-change stove.
Background technology
Silica high-temperature phase-change rate requirement is under the environment of 1500 DEG C, insulation 6-12 hour.Silica phase transformation simultaneously realizes again in phase-change furnace, the burner hearth of existing phase-change furnace is square and is made by glass or stainless steel, there is following shortcoming in it: can not long-term heat preservation, and heat conductivility is poor, does not have vibration resistance, stressed or internal-external temperature difference is large time all easily damage, but also can not be high temperature resistant, glass and the resistance to maximum temperature of stainless burner hearth are 1200 DEG C, can not feed in raw material in high temperature environments, because burner hearth intensity is low in high temperature environments, SiO can not be born
2the impact of particle.
Summary of the invention
Technical problem to be solved by this invention is for the deficiencies in the prior art, provides a kind of reasonable in design, good heat conductivity, high temperature resistant, intensity is high, and have the silica high-temperature phase-change stove of non-oxidizability and vibration resistance.
Technical problem to be solved by this invention is realized by following technical scheme, the present invention is a kind of silica high-temperature phase-change stove, be characterized in: comprise body of heater, body of heater is contained in frame by the rotating shaft being located at the outer both sides of body of heater, described body of heater is provided with housing, is provided with crucible in housing, and the pot body of crucible is cylindrical, the bottom of crucible is provided with some back-up blocks, and the upper end of crucible is provided with upper cover; Be set to the thermal treatment zone to crucible 3/4-1/3 eminence at the bottom of described crucible bottom and crucible, be provided with heater outside the crucible at thermal treatment zone place, be provided with refractory insulating layer in the crucible surrounding of the thermal treatment zone; Be provided with lower heat-insulation layer below described crucible, inside refractory insulating layer, the bottom of some back-up blocks and outside portion are embedded in lower heat-insulation layer and refractory insulating layer respectively; Crucible surrounding above the thermal treatment zone is provided with heat-insulation layer; Between refractory insulating layer and housing and on be equipped with heat-preservation cotton between heat-insulation layer and housing.
Technical problem to be solved by this invention can also be realized further by following technical scheme, in described silica high-temperature phase-change stove: described refractory insulating layer is made up of high temperature brick layer and insulating brick-layer from inside to outside successively.
Technical problem to be solved by this invention can also be realized further by following technical scheme, in described silica high-temperature phase-change stove: described upper heat-insulation layer is made up of 1 floor height temperature brick layer and 3 layers of insulating brick-layer from bottom to top successively.
Technical problem to be solved by this invention can also be realized further by following technical scheme, in described silica high-temperature phase-change stove: described lower heat-insulation layer is made up of insulating brick-layer.
Technical problem to be solved by this invention can also be realized further by following technical scheme, in described silica high-temperature phase-change stove: the top inner side of described upper heat-insulation layer is provided with the flange that a circle raises up, and flange coordinates with the inner ring of upper cover.
Technical problem to be solved by this invention can also be realized further by following technical scheme, in described silica high-temperature phase-change stove: 10-25mm is reduced in external diameter gradual change between 3/4-1/3 eminence to crucible top of described crucible, the internal diameter of described crucible is 400-800mm, and the wall thickness of crucible is 10-50mm.
Technical problem to be solved by this invention can also be realized further by following technical scheme, in described silica high-temperature phase-change stove: described crucible is made up of the raw material of following weight proportion, Al
2o
360-80, mullite 10-20, silica 1 0-20.
Technical problem to be solved by this invention can also be realized further by following technical scheme, in described silica high-temperature phase-change stove: the weight proportion of each raw material is, Al
2o
370, mullite 15, silica 15.
Technical problem to be solved by this invention can also be realized further by following technical scheme, in described silica high-temperature phase-change stove: the preparation method of described crucible is as follows: get above-mentioned raw materials, melting at 1700-1800 DEG C of temperature, slurrying material is again pulverized after cooling, then by slurry homogenizing, shaping crucible green compact, green compact carry out calcining and get final product at 1300-1500 DEG C of temperature.
Technical problem to be solved by this invention can also be realized further by following technical scheme, in described silica high-temperature phase-change stove: the slurry after homogenizing is injected mould under the pressure of 1-2bar, leaves standstill 2-4h shaping.
Compared with prior art, the present invention has the following advantages:
1, by crucible peripheral hardware heat-insulation layer, the furnace insulation time can be made long, high temperature in crucible can be kept;
2, the pot body of crucible is cylindrical, and adopts Al
2o
3, mullite and silica is that raw material is made, therefore the thermal conductivity of crucible is good, and more than 1500 DEG C, under high temperature, the internal-external temperature difference of sidewall of crucible is no more than 20-30 DEG C;
3, the intensity of crucible is high, reinforced under hot environment more than 1500 DEG C, can the SiO of anti-5-8cm particle diameter
2impact;
4, high temperature resistant, the high temperature that ability is more than 1500 DEG C;
5, there is non-oxidizability, can under hot environment, ingress of air can not be oxidized more than 1500 DEG C;
6, have vibration resistance, namely under crucible Nei Wenduda 1500 DEG C of high temperature, crucible internal-external temperature difference can at 200-600 DEG C, and crucible can not damage.
Accompanying drawing explanation
Fig. 1 is a kind of sectional structure schematic diagram of body of heater of the present invention.
Detailed description of the invention
Referring to accompanying drawing, further describe concrete technical scheme of the present invention, so that those skilled in the art understands the present invention further, and do not form the restriction to its right.
Embodiment 1, a kind of silica high-temperature phase-change stove, with reference to accompanying drawing 1, comprises body of heater, body of heater is contained in frame by the rotating shaft being located at the outer both sides of body of heater, and described body of heater is provided with housing, is provided with crucible 2 in housing, the pot body of crucible 2 is cylindrical, and its internal diameter is 500mm, and external diameter is 550mm.The bottom of crucible 2 is provided with 6 back-up blocks 6, and the upper end of crucible 2 is provided with upper cover 1.Bottom described crucible 2 and crucible 2 end, is set to the thermal treatment zone to crucible 1/3 eminence, is provided with heater outside the crucible 2 at thermal treatment zone place, and heater is carbon silicon heating rod.Be provided with refractory insulating layer in crucible 2 surrounding of the thermal treatment zone, refractory insulating layer is downwards until housing bottom.Below described crucible 2, be provided with lower heat-insulation layer 5 inside refractory insulating layer, the bottom of some back-up blocks 6 and outside portion are embedded in lower heat-insulation layer 5 and refractory insulating layer respectively, make back-up block 6 fixation, and crucible 2 can not be made in phase transition process to occur rocking.Crucible 2 surrounding above the thermal treatment zone is provided with heat-insulation layer 8; Between refractory insulating layer and housing and on be equipped with heat-preservation cotton 7 between heat-insulation layer 8 and housing.
Embodiment 2, in silica high-temperature phase-change stove as described in Example 1: described refractory insulating layer is made up of high temperature brick layer 4 and insulating brick-layer 3 from inside to outside successively.The thickness of high temperature brick layer 4 is 110mm.
Embodiment 3, in silica high-temperature phase-change stove as described in Example 1: described upper heat-insulation layer 8 is made up of 1 floor height temperature brick layer and 3 layers of insulating brick-layer from bottom to top successively, the thickness of high temperature brick layer and every layer of insulating brick-layer is 85mm.
Embodiment 4, in silica high-temperature phase-change stove as described in Example 1: described lower heat-insulation layer 5 is made up of insulating brick-layer, the thickness of insulating brick-layer is 300mm.
Embodiment 5, in silica high-temperature phase-change stove as described in Example 1: the top inner side of described upper heat-insulation layer 8 is provided with the flange that a circle raises up, flange coordinates with the inner ring of upper cover 1, upper cover 1 can being made like this to fasten more firm, the heat of crucible 2 can being prevented again to scatter and disappear by directly contacting with upper cover simultaneously.
Embodiment 6, in silica high-temperature phase-change stove as described in Example 1: 10-25mm is reduced in external diameter gradual change between 1/3 eminence to crucible top of described crucible 2, and namely external diameter fades to 530mm by 550mm, and such crucible 2 top combines more firm with insulating brick-layer.
Embodiment 7, in the silica high-temperature phase-change stove as described in any one of embodiment 1-6: as described in crucible 2 be made up of the raw material of following weight proportion, Al
2o
360, mullite 10, silica 10.
Embodiment 8, in the silica high-temperature phase-change stove as described in any one of embodiment 1-6: as described in crucible 2 be made up of the raw material of following weight proportion, Al
2o
370, mullite 15, silica 15.
Embodiment 9, in silica high-temperature phase-change stove as described in embodiment 7 or 8: as described in the preparation method of crucible 2 as follows: get above-mentioned raw materials, melting at 1800 DEG C of temperature, slurrying material is again pulverized after cooling, then by slurry homogenizing, shaping crucible green compact, green compact carry out calcining and get final product at 1400 DEG C of temperature.
Embodiment 10, in silica high-temperature phase-change stove as described in Example 9: the slurry after homogenizing is injected mould under the pressure of 1.5bar, leaves standstill 3h shaping.
Claims (10)
1. a silica high-temperature phase-change stove, it is characterized in that: comprise body of heater, body of heater is contained in frame by the rotating shaft being located at the outer both sides of body of heater, described body of heater is provided with housing, crucible is provided with in housing, the pot body of crucible is cylindrical, and the bottom of crucible is provided with some back-up blocks, and the upper end of crucible is provided with upper cover; Be set to the thermal treatment zone to crucible 3/4-1/3 eminence at the bottom of described crucible bottom and crucible, be provided with heater outside the crucible at thermal treatment zone place, be provided with refractory insulating layer in the crucible surrounding of the thermal treatment zone; Be provided with lower heat-insulation layer below described crucible, inside refractory insulating layer, the bottom of some back-up blocks and outside portion are embedded in lower heat-insulation layer and refractory insulating layer respectively; Crucible surrounding above the thermal treatment zone is provided with heat-insulation layer; Between refractory insulating layer and housing and on be equipped with heat-preservation cotton between heat-insulation layer and housing.
2. silica high-temperature phase-change stove according to claim 1, is characterized in that: described refractory insulating layer is made up of high temperature brick layer and insulating brick-layer from inside to outside successively.
3. silica high-temperature phase-change stove according to claim 1, is characterized in that: described upper heat-insulation layer is made up of 1 floor height temperature brick layer and 3 layers of insulating brick-layer from bottom to top successively.
4. silica high-temperature phase-change stove according to claim 1, is characterized in that: described lower heat-insulation layer is made up of insulating brick-layer.
5. silica high-temperature phase-change stove according to claim 1, is characterized in that: the top inner side of described upper heat-insulation layer is provided with the flange that a circle raises up, and flange coordinates with the inner ring of upper cover.
6. silica high-temperature phase-change stove according to claim 1, is characterized in that: 10-25mm is reduced in external diameter gradual change between 3/4-1/3 eminence to crucible top of described crucible, and the internal diameter of described crucible is 400-800mm, and the wall thickness of crucible is 10-50mm.
7. the silica high-temperature phase-change stove according to any one of claim 1-6, is characterized in that: described crucible is made up of the raw material of following weight proportion, Al
2o
360-80, mullite 10-20, silica 1 0-20.
8. silica high-temperature phase-change stove according to claim 7, is characterized in that: the weight proportion of each raw material is, Al
2o
370, mullite 15, silica 15.
9. silica high-temperature phase-change stove according to claim 7, it is characterized in that: the preparation method of described crucible is as follows: get above-mentioned raw materials, melting at 1700-1800 DEG C of temperature, slurrying material is again pulverized after cooling, then by slurry homogenizing, shaping crucible green compact, green compact carry out calcining and get final product at 1300-1500 DEG C of temperature.
10. silica high-temperature phase-change stove according to claim 9, is characterized in that: the slurry after homogenizing is injected mould under the pressure of 1-2bar, leaves standstill 2-4h shaping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510153660.8A CN104764324A (en) | 2015-04-02 | 2015-04-02 | Silicon dioxide high-temperature phase-change furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510153660.8A CN104764324A (en) | 2015-04-02 | 2015-04-02 | Silicon dioxide high-temperature phase-change furnace |
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|---|---|
| CN104764324A true CN104764324A (en) | 2015-07-08 |
Family
ID=53646306
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| CN201510153660.8A Pending CN104764324A (en) | 2015-04-02 | 2015-04-02 | Silicon dioxide high-temperature phase-change furnace |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112938987A (en) * | 2021-01-08 | 2021-06-11 | 江苏神汇新型陶瓷材料科技有限公司 | High-temperature phase change method for high-purity silicon dioxide |
| CN114807566A (en) * | 2022-05-05 | 2022-07-29 | 湖州学院 | Multifunctional well type muffle-free heat treatment atmosphere furnace |
| CN117287976A (en) * | 2023-11-24 | 2023-12-26 | 杭州嘉悦智能设备有限公司 | Graphitizing furnace |
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|---|---|---|---|---|
| CN2164534Y (en) * | 1993-07-22 | 1994-05-11 | 苗志义 | Compound silicon stone prefabricated integral crucible |
| CN2470771Y (en) * | 2001-01-08 | 2002-01-09 | 冶金工业部长春黄金研究院 | Gold smelting furnace |
| CN202442590U (en) * | 2012-02-16 | 2012-09-19 | 长沙特耐金属材料科技有限公司 | Crucible type high-temperature salt-bath heat-treatment electric furnace |
| US20120300806A1 (en) * | 2011-05-23 | 2012-11-29 | Prabhu Satyen N | Electric Induction Furnace with Lining Wear Detection System |
| CN202709723U (en) * | 2012-08-13 | 2013-01-30 | 巢湖云海镁业有限公司 | Energy-saving and environment-protection magnesium alloy smelting furnace with induced draft cover |
| CN204514026U (en) * | 2015-04-02 | 2015-07-29 | 连云港神汇硅材料科技有限公司 | A kind of silica high-temperature phase-change stove |
-
2015
- 2015-04-02 CN CN201510153660.8A patent/CN104764324A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2164534Y (en) * | 1993-07-22 | 1994-05-11 | 苗志义 | Compound silicon stone prefabricated integral crucible |
| CN2470771Y (en) * | 2001-01-08 | 2002-01-09 | 冶金工业部长春黄金研究院 | Gold smelting furnace |
| US20120300806A1 (en) * | 2011-05-23 | 2012-11-29 | Prabhu Satyen N | Electric Induction Furnace with Lining Wear Detection System |
| CN202442590U (en) * | 2012-02-16 | 2012-09-19 | 长沙特耐金属材料科技有限公司 | Crucible type high-temperature salt-bath heat-treatment electric furnace |
| CN202709723U (en) * | 2012-08-13 | 2013-01-30 | 巢湖云海镁业有限公司 | Energy-saving and environment-protection magnesium alloy smelting furnace with induced draft cover |
| CN204514026U (en) * | 2015-04-02 | 2015-07-29 | 连云港神汇硅材料科技有限公司 | A kind of silica high-temperature phase-change stove |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112938987A (en) * | 2021-01-08 | 2021-06-11 | 江苏神汇新型陶瓷材料科技有限公司 | High-temperature phase change method for high-purity silicon dioxide |
| CN112938987B (en) * | 2021-01-08 | 2023-12-05 | 江苏神汇半导体科技有限公司 | High-temperature phase change method for high-purity silicon dioxide |
| CN114807566A (en) * | 2022-05-05 | 2022-07-29 | 湖州学院 | Multifunctional well type muffle-free heat treatment atmosphere furnace |
| CN114807566B (en) * | 2022-05-05 | 2023-12-15 | 湖州学院 | Multifunctional well type Ma Fure-free treatment atmosphere furnace |
| CN117287976A (en) * | 2023-11-24 | 2023-12-26 | 杭州嘉悦智能设备有限公司 | Graphitizing furnace |
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Application publication date: 20150708 |
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