CN201817287U - Negative pressure silicon carbide smelting furnace - Google Patents
Negative pressure silicon carbide smelting furnace Download PDFInfo
- Publication number
- CN201817287U CN201817287U CN2010205633991U CN201020563399U CN201817287U CN 201817287 U CN201817287 U CN 201817287U CN 2010205633991 U CN2010205633991 U CN 2010205633991U CN 201020563399 U CN201020563399 U CN 201020563399U CN 201817287 U CN201817287 U CN 201817287U
- Authority
- CN
- China
- Prior art keywords
- furnace gas
- negative pressure
- furnace
- silicon carbide
- smelting furnace
- Prior art date
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The utility model provides a negative pressure silicon carbide smelting furnace. The smelting furnace comprises a furnace body, a furnace head and a negative pressure generating device, wherein, the furnace body comprises a side wall; the side wall comprises a channel steel frame, a ventilating wall inlaid in the channel steel frame, and a metal sealing cover welded with one side surface of the channel steel frame; a clearance is reserved between the metal sealing cover and the ventilating wall, so that a furnace gas exchanger chamber is formed; through-holes are formed on the metal sealing cover; the negative pressure generating device used for automatically discharging furnace gas produced by the silicon carbide negative pressure smelting furnace comprises furnace gas guide pipes, first fans, a second fan, a furnace gas collecting pipe and a furnace gas recovery chamber; one end of each furnace gas guide pipe is connected with the corresponding through-hole of the metal sealing cover, and the first fans are arranged at the other ends of the furnace gas guide pipes, which are communicated with the furnace gas collecting pipe; the furnace gas collecting pipe is further connected with the furnace gas recovery chamber; and the second fan is arranged in the furnace gas collecting pipe and close to the furnace gas recovery chamber.
Description
Technical field:
The utility model relates to the silicon carbide technical field of smelting, particularly a kind of silicon carbide negative pressure smelting furnace.
Background technology:
The most acheson furnaces that adopt of existing sic smelting furnace in silicon-dioxide reductive electrolytic process, according to reductive agent quantity and certain temperature condition, can obtain silicon carbide products.
Yet, because the reduction reaction of silicon carbide is a supercharging reaction, that is, produce a large amount of furnace gases in the sic smelting furnace stove, when furnace gas can not in time be got rid of, the sic smelting furnace furnace pressure increased, and then caused spray stove phenomenon.So, be unfavorable for the formation and the growth of carborundum crystals, thereby influence the quality of silicon carbide.In addition, along with the increase of sic smelting furnace furnace pressure, the forward reaction speed of carbon and silicon-dioxide is affected, and needs cost to impel carbon and silicon dioxde reaction long tap to tap time, has so increased the per unit area yield power consumption of sic smelting furnace.
Summary of the invention:
In view of this, be necessary to provide a kind of silicon carbide negative pressure smelting furnace that reduces the per unit area yield energy consumption, improves the silicon carbide quality.
A kind of silicon carbide negative pressure smelting furnace comprises shaft, burner and negative pressure generation device.Shaft comprises side wall, combustion chamber, and the zone that furnace wall and burner surround is used to accommodate combustion chamber and raw material.Wherein, side wall comprises chan frame, be embedded in ventilative wall in the chan frame, with the metallic seal cover that weld mutually chan frame one side, have the gap between metallic seal cover and the ventilative wall, so form the furnace gas switch room.Offer through hole on the metallic seal cover.The furnace gas that the negative pressure generation device is used for automatically this silicon carbide negative pressure smelting furnace being produced is discharged, so that the pressure in the silicon carbide negative pressure smelting furnace reduces.The negative pressure generation device comprises that furnace gas guiding tube, first blower fan, second blower fan, furnace gas manifold trunk and furnace gas reclaim the chamber.Furnace gas guiding tube one end is connected with the through hole of metallic seal cover, and the other end is provided with first blower fan and is communicated with the furnace gas manifold trunk.The furnace gas manifold trunk also reclaims the chamber with furnace gas and is connected, and second blower fan is arranged in the furnace gas manifold trunk, and reclaims the chamber near furnace gas.
Preferably, this side wall also comprises the triangular supports that is welded on the chan frame, and this triangular supports is used to prevent because of side wall and burner surround raw material in the zone to the pushing of side wall, and causes the side wall side to fall.
Preferably, this negative pressure generation device also comprises air pressure detector, controller of fan; Being arranged in the furnace gas switch room in the side wall and with controller of fan of air pressure detector correspondence electrically connects, and the air pressure detector is used to detect the air pressure the furnace gas switch room in, and produces corresponding atmospheric pressure value, and atmospheric pressure value that will generation sends controller of fan to; Controller of fan also electrically connects with first blower fan, and controller of fan is used for atmospheric pressure value that will receive and the atmospheric pressure value of presetting relatively, and adjusts the rotating speed of first blower fan according to comparative result.
Preferably, this silicon carbide negative pressure smelting furnace comprises a burner, is provided for first solid graphite electrode, second solid graphite electrode that are connected with the positive and negative electrode of electric supply installation on this burner; Shaft comprises first combustion chamber, second combustion chamber, and what first combustion chamber was corresponding with second combustion chamber series connection back electrically connects with first solid graphite electrode, second solid graphite electrode.
Utilize above-mentioned silicon carbide negative pressure smelting furnace, inlaying ventilative wall on the chan frame in side wall reaches at chan frame one side welding metal seal closure, so make and form the furnace gas switch room between metallic seal cover and the ventilative wall, the negative pressure generation device utilizes blower fan automatically the furnace gas by the generation of silicon carbide negative pressure smelting furnace in the furnace gas switch room to be discharged smoothly, to reduce the pressure in the silicon carbide negative pressure smelting furnace, so can prevent to spray the stove phenomenon takes place, and help the formation and the growth of carborundum crystals, and then improved the quality of silicon carbide.In addition, reducing of the discharge of the interior furnace gas of sic smelting furnace stove and the interior pressure of sic smelting furnace stove can impel the forward reaction of carbon and silicon-dioxide to speed up, thereby reduced the per unit area yield power consumption of sic smelting furnace.
Description of drawings:
Fig. 1 is the floor map of the silicon carbide negative pressure smelting furnace of a better embodiment.
Fig. 2 is the structural representation of the single side wall of silicon carbide negative pressure smelting furnace among Fig. 1.
Fig. 3 is the structural representation of single another angle of side wall of silicon carbide negative pressure smelting furnace among Fig. 1.
Fig. 4 is the cross-sectional view of the single side wall of silicon carbide negative pressure smelting furnace among Fig. 1.
Fig. 5 is the floor map of the silicon carbide negative pressure smelting furnace of another better embodiment.
Fig. 6 is the cross-sectional view of the single side wall of silicon carbide negative pressure smelting furnace among Fig. 5.
Among the figure: silicon carbide negative pressure smelting furnace 10, shaft 20, side wall 21, chan frame 211, ventilative wall 212, metallic seal cover 213, furnace gas switch room 214, triangular supports 215, through hole 216, combustion chamber 22, burner 30, negative pressure generation device 40, furnace gas guiding tube 41, first blower fan 42, second blower fan 43, furnace gas manifold trunk 44, furnace gas reclaims chamber 45, silicon carbide negative pressure smelting furnace 11, side wall 61, chan frame 611, ventilative wall 612, metallic seal cover 613, furnace gas switch room 614, triangular supports 615, through hole 616, negative pressure generation device 70, furnace gas guiding tube 71, first blower fan 72, second blower fan 73, furnace gas manifold trunk 74, furnace gas reclaims chamber 75, air pressure detector 76, controller of fan 77, burner 80, first solid graphite electrode 81, second solid graphite electrode 82
Embodiment:
As shown in Figure 1, silicon carbide negative pressure smelting furnace 10 comprises shaft 20, burner 30 and negative pressure generation device 40.
The furnace gas that negative pressure generation device 40 is used for automatically this silicon carbide negative pressure smelting furnace 10 being produced is discharged, so that the pressure in the silicon carbide negative pressure smelting furnace 10 reduces.Negative pressure generation device 40 comprises that furnace gas guiding tube 41, first blower fan 42, second blower fan 43, furnace gas manifold trunk 44 and furnace gas reclaim chamber 45.Furnace gas guiding tube 41 1 ends are connected with the through hole 216 of metallic seal cover 213, and the other end is provided with first blower fan 42 and is communicated with furnace gas manifold trunk 44.Furnace gas manifold trunk 44 also reclaims chamber 45 with furnace gas and is connected, and second blower fan 43 is arranged in the furnace gas manifold trunk 44, and reclaims chamber 45 near furnace gas.In the present embodiment, the furnace gas guiding tube in the negative pressure generation device 40 41, first blower fan, 42 quantity are corresponding with through hole 216 quantity on the metallic seal cover 213.
When utilizing silicon carbide negative pressure smelting furnace 10 silicon carbide smeltings, the furnace gas that produces in the silicon carbide negative pressure smelting furnace 10 enters furnace gas switch room 214 from ventilative wall, negative pressure generation device 40 utilizes first blower fan 42, second blower fan 43 automatically the furnace gas of furnace gas switch room 214 to be discharged smoothly, and the furnace gas of discharging is introduced furnace gas recovery chamber 45 reclaim.Like this, reduce the pressure in the stove, can prevent to spray formation and the growth that carborundum crystals takes place and helps the stove phenomenon, and then improved the quality of silicon carbide.In addition, reducing of the discharge of the interior furnace gas of stove and the interior pressure of stove can impel the forward reaction of carbon and silicon-dioxide to speed up, thereby reduced the per unit area yield power consumption of sic smelting furnace.
The floor map of the silicon carbide negative pressure smelting furnace 11 of another better embodiment as shown in Figure 5.Silicon carbide negative pressure smelting furnace 11 adopts single burner, twin furnace core series design, that is, first solid graphite electrode 81, second solid graphite electrode 82 that on a burner 80, are provided for being connected with the positive and negative electrode of electric supply installation, first combustion chamber 62, second combustion chamber 63 are set in shaft, what first combustion chamber 62 was corresponding with second combustion chamber, 63 series connection backs electrically connects with first solid graphite electrode 81, second solid graphite electrode 82, and first combustion chamber 62,63 heatings of second combustion chamber are smelted to generate silicon carbide raw material 50.Side wall 21 in side wall 61 in the silicon carbide negative pressure smelting furnace 11, the building block of negative pressure generation device 70 and the silicon carbide negative pressure smelting furnace 10, the building block of negative pressure generation device 40 are identical, that is, the side wall 61 of silicon carbide negative pressure smelting furnace 11 comprises chan frame 611, ventilative wall 612, metallic seal cover 613, furnace gas switch room 614, triangular supports 615, through hole 616, and negative pressure generation device 70 comprises that furnace gas guiding tube 71, first blower fan 72, second blower fan 73, furnace gas manifold trunk 74 and furnace gas reclaim chamber 75.
Further, negative pressure generation device 70 also comprises air pressure detector 76 and controller of fan 77.Please be simultaneously referring to Fig. 6, being arranged in the furnace gas switch room 614 in the side wall 61 and with controller of fan 77 of air pressure detector 76 correspondences electrically connects.Air pressure detector 76 is used to detect the air pressure in the furnace gas switch room 614, and produces corresponding atmospheric pressure value, and sends the atmospheric pressure value that produces to controller of fan 77.Controller of fan 77 also electrically connects with first blower fan 72, and controller of fan 77 is used for atmospheric pressure value that will receive and the atmospheric pressure value of presetting relatively, and adjusts the rotating speed of first blower fan 72 according to comparative result.For example,, increase the rotating speed of first blower fan 72, the furnace gases in the furnace gas switch room 614 are discharged quickening when the atmospheric pressure value that compares reception during greater than default atmospheric pressure value.
Utilize above-mentioned silicon carbide negative pressure smelting furnace, inlaying ventilative wall on the chan frame in side wall reaches at chan frame one side welding metal seal closure, so make and form the furnace gas switch room between metallic seal cover and the ventilative wall, the negative pressure generation device utilizes blower fan automatically the furnace gas by the generation of silicon carbide negative pressure smelting furnace in the furnace gas switch room to be discharged smoothly, to reduce the pressure in the silicon carbide negative pressure smelting furnace, so can prevent to spray the stove phenomenon takes place, and help the formation and the growth of carborundum crystals, and then improved the quality of silicon carbide.In addition, reducing of the discharge of the interior furnace gas of sic smelting furnace stove and the interior pressure of sic smelting furnace stove can impel the forward reaction of carbon and silicon-dioxide to speed up, thereby reduced the per unit area yield power consumption of sic smelting furnace.
Claims (4)
1. a silicon carbide negative pressure smelting furnace comprises shaft, burner; Shaft comprises side wall, combustion chamber, and the zone that furnace wall and burner surround is used to accommodate combustion chamber and raw material; It is characterized in that: the metallic seal cover that this side wall comprises chan frame, be embedded in ventilative wall in the chan frame, weld mutually with chan frame one side, has the gap between metallic seal cover and the ventilative wall, so form the furnace gas switch room, offer through hole on the metallic seal cover; This silicon carbide negative pressure smelting furnace also comprises the negative pressure generation device, and the furnace gas that this negative pressure generation device is used for automatically this silicon carbide negative pressure smelting furnace being produced is discharged, so that the pressure in the silicon carbide negative pressure smelting furnace reduces; This negative pressure generation device comprises that furnace gas guiding tube, first blower fan, second blower fan, furnace gas manifold trunk and furnace gas reclaim the chamber, furnace gas guiding tube one end is connected with the through hole of metallic seal cover, the other end is provided with first blower fan and is communicated with the furnace gas manifold trunk, the furnace gas manifold trunk also reclaims the chamber with furnace gas and is connected, second blower fan is arranged in the furnace gas manifold trunk, and reclaims the chamber near furnace gas.
2. silicon carbide negative pressure smelting furnace according to claim 1, it is characterized in that: this side wall also comprises the triangular supports that is welded on the chan frame, this triangular supports is used to prevent because of side wall and burner surround raw material in the zone to the pushing of side wall, and causes the side wall side to fall.
3. silicon carbide negative pressure smelting furnace according to claim 1 is characterized in that: this negative pressure generation device also comprises air pressure detector, controller of fan; Being arranged in the furnace gas switch room in the side wall and with controller of fan of air pressure detector correspondence electrically connects, and the air pressure detector is used to detect the air pressure the furnace gas switch room in, and produces corresponding atmospheric pressure value, and atmospheric pressure value that will generation sends controller of fan to; Controller of fan also electrically connects with first blower fan, and controller of fan is used for atmospheric pressure value that will receive and the atmospheric pressure value of presetting relatively, and adjusts the rotating speed of first blower fan according to comparative result.
4. silicon carbide negative pressure smelting furnace according to claim 1 is characterized in that: this silicon carbide negative pressure smelting furnace comprises a burner, is provided for first solid graphite electrode, second solid graphite electrode that are connected with the positive and negative electrode of electric supply installation on this burner; Shaft comprises first combustion chamber, second combustion chamber, and what first combustion chamber was corresponding with second combustion chamber series connection back electrically connects with first solid graphite electrode, second solid graphite electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205633991U CN201817287U (en) | 2010-10-19 | 2010-10-19 | Negative pressure silicon carbide smelting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205633991U CN201817287U (en) | 2010-10-19 | 2010-10-19 | Negative pressure silicon carbide smelting furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201817287U true CN201817287U (en) | 2011-05-04 |
Family
ID=43915250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205633991U Expired - Fee Related CN201817287U (en) | 2010-10-19 | 2010-10-19 | Negative pressure silicon carbide smelting furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201817287U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101993078A (en) * | 2010-10-19 | 2011-03-30 | 平罗县滨河碳化硅制品有限公司 | Silicon carbide negative pressure smelting furnace and furnace gas recovery method thereof |
| CN107188182A (en) * | 2017-07-26 | 2017-09-22 | 郑州睿科生化科技有限公司 | One kind automation sic smelting furnace |
| CN108178158A (en) * | 2017-11-28 | 2018-06-19 | 贾玉东 | The straight trough type resistance furnace collected exhaust gas and can be explosion-proof |
-
2010
- 2010-10-19 CN CN2010205633991U patent/CN201817287U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101993078A (en) * | 2010-10-19 | 2011-03-30 | 平罗县滨河碳化硅制品有限公司 | Silicon carbide negative pressure smelting furnace and furnace gas recovery method thereof |
| CN101993078B (en) * | 2010-10-19 | 2013-01-09 | 平罗县滨河碳化硅制品有限公司 | Silicon carbide negative pressure smelting furnace and furnace gas recovery method thereof |
| CN107188182A (en) * | 2017-07-26 | 2017-09-22 | 郑州睿科生化科技有限公司 | One kind automation sic smelting furnace |
| CN108178158A (en) * | 2017-11-28 | 2018-06-19 | 贾玉东 | The straight trough type resistance furnace collected exhaust gas and can be explosion-proof |
| CN108178158B (en) * | 2017-11-28 | 2022-11-01 | 贾玉东 | Straight-groove type resistance furnace capable of collecting waste gas and preventing explosion |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201473319U (en) | Vertical graphitizing furnace for carbon dust high temperature graphitization | |
| CN101261078B (en) | Large-sized DC hollow electrode hermetic submerged arc furnace | |
| CN201945191U (en) | Novel alloy baking device | |
| CN201817287U (en) | Negative pressure silicon carbide smelting furnace | |
| CN101532781B (en) | Sealed submerged arc furnace system | |
| CN202063977U (en) | Electric heating raw cadmium continuous reduction smelting furnace | |
| CN102154663A (en) | Method for preheating alumina by using smoke afterheat from aluminium electrolysis production | |
| CN107815516B (en) | External heating type coal-based vertical furnace for producing direct reduced iron | |
| CN1038260C (en) | Method and apparatus for controlling of operation of double-furnace | |
| CN201653117U (en) | Furnace roof sealing device for electro-fused magnesia furnace | |
| CN102021299A (en) | Device for utilizing residual heat of gas flue in hood-type annealing furnace | |
| CN101993078B (en) | Silicon carbide negative pressure smelting furnace and furnace gas recovery method thereof | |
| CN204151368U (en) | The natural air cooled device of iron alloy electric furnace furnace bottom | |
| CN204138359U (en) | A kind of iron scale oxidation treatment device | |
| CN212533052U (en) | Scrap steel continuous charging electric arc furnace with double preheating channels | |
| CN106672971A (en) | Electrode type calcium carbide furnace | |
| CN207738789U (en) | A kind of external-heat coal base upright furnace for producing direct reduced iron | |
| CN102445075B (en) | A kind of Medium frequency induction roaster heat energy recovering method and device | |
| CN104261484B (en) | A kind of iron scale oxidation treatment device | |
| CN210718679U (en) | Bottom ring for ferro-silicon-iron-ore heating furnace electrode holding system for coal source power generation with high power concentration and heat efficiency | |
| CN219693905U (en) | Tail gas collecting and utilizing device for silicomanganese ore heating furnace | |
| CN217383322U (en) | Grate structure for producing steam | |
| CN204385263U (en) | A kind of hot blast mineral hot furnace | |
| CN102564130B (en) | Continuous temperature control smelting system integrating rotary kiln with melting furnace | |
| CN209802116U (en) | Smoke dust cooling device for submerged arc furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110504 Termination date: 20121019 |