CN201837231U - Double-hearth high-temperature smelting furnace - Google Patents
Double-hearth high-temperature smelting furnace Download PDFInfo
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- CN201837231U CN201837231U CN2010205219309U CN201020521930U CN201837231U CN 201837231 U CN201837231 U CN 201837231U CN 2010205219309 U CN2010205219309 U CN 2010205219309U CN 201020521930 U CN201020521930 U CN 201020521930U CN 201837231 U CN201837231 U CN 201837231U
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Abstract
The utility model discloses a double-hearth high-temperature smelting furnace, which belongs to the technical field of electric heating. The double-hearth high-temperature smelting furnace is characterized in that a furnace body is simultaneously provided with a high-temperature heating hearth and an ultrahigh-temperature heating hearth, the high-temperature hearth is a case type furnace structure with a liftable bottom, the ultrahigh-temperature hearth is a well type furnace structure with a liftable bottom, and exchanges between the bottoms of the two heating hearths and the materials in the two heating hearths are realized by a furnace bottom ascending, descending and rotating mechanism. The two heating hearths can be independently used, and can also be used simultaneously. When the two hearths are used simultaneously, the materials in the high-temperature hearth can be preheated or further cooled down, and the preheated materials are further smelted or cooled in the ultrahigh-temperature hearth, The double-hearth high-temperature smelting furnace realizes cascade heating of the materials by the aid of the double-hearth structure, guarantees heating elements operating in an optimal operating zone for a long time, doubles ultrahigh-temperature smelting efficiency of the batched materials at least, greatly shortens heating time for the materials, and improves operational safety.
Description
Technical field
The utility model is a kind of high temperature smelting furnace, belongs to the electric-heating technology field.
Background technology
In the research and production process, the fusing point of a large amount of metals or non-metallic material is higher than 1300 ℃, and to this class material heating the time, heating-up temperature is often above 1300 ℃.At present, the heating furnace that uses generally is that heater is the Si-Mo rod material, and temperature can reach 1700 ℃ superhigh temperature melting furnace.But this quasi-tradition Si-Mo rod melting furnace is single chamber structure, intrinsic drawback below existing in the heating and cooling process:
(1) heating, cool time is long.For the Si-Mo rod stove, it was heated to 1300 ℃ of needs 2 ~ 3 hours from room temperature, needed about 2 hours again from 1300 ℃ to 1600 ℃; And be cooled to below 800 ℃ from 1600 ℃, then need 2 ~ 3 hours.
(2) efficient of bulge test is extremely low.Usually heat the charge cask that uses and be material crucibles such as corundum, magnesia, zirconia, and the crucible hot-cracking resistance of these refractory materials is poor, in heating process, must put into burner hearth and heat with stove from room temperature, and need be cooled to 800 ℃ even lower temperature could be from from burner hearth, taking out.Therefore, adopt traditional silicon molybdenum bar melting furnace, may can only heat 1 ~ 2 batch materials in one day, scientific research or production efficiency are extremely low.
In order to address this problem, usually adopt 1300 ℃ of high temperature furnaces (generally being the heating of resistance wire furnace or Elema) and the method that traditional silicon molybdenum bar melting furnace coupling is used to raise the efficiency, promptly in heating or cooling procedure, when the crucible that material will be housed when high temperature furnace is preheating to 1000 ~ 1300 ℃ or Si-Mo rod stove and is cooled to 1200 ~ 1400 ℃, when treating that two furnace are close, crucible and material are transferred to continuation heating in the Si-Mo rod superhigh temperature stove.Because this mode is generally manually-operated, and the transfer process time is longer, thereby, crucible can be exposed in the air for a long time on the one hand, cause the temperature of crucible acutely to descend easily, and then crucible is broken or produce small crackle, continuing in the Si-Mo rod stove that crucible breaks in the heating process, inner material overflow makes burner hearth wreck in burner hearth; On the other hand, in the operating process of artificial transfer crucible, easily because misoperation is accidents caused, even the personnel that burn, there is very high danger.
Summary of the invention
The purpose of this utility model is the deficiency that overcomes existing high temperature experiment continued operation, and a kind of simple and convenient, efficient and safe is provided, and the experiment high temperature smelting furnace that can use continuously.
A kind of double-hearth high temperature smelting furnace, furnace binding mainly partly are made of high temperature (＜1300 ℃) and superhigh temperature (＜1700 ℃) two heating furnaces, furnace bottom lifting and rotating mechanism and electric control gears etc. as shown in Figure 1; Comprise control cabinet 1, box burner hearth fire door 2, box burner hearth 3, thermal insulation fire-resistant material dividing plate 4, well type furnace fire door 5, well type furnace 6, fettling hole 7, hinge 8, furnace hearth plate 9, circular cone locating sleeve 10, hollow ball refractory brick 11, furnace bottom holder 12, turning cylinder 13, frustum of a cone alignment pin 14.Box burner hearth 3 and well type furnace 6 are arranged in the sustained height place of stove upper end, and the centre is separated by thermal insulation fire-resistant material dividing plate 4; Simultaneously box burner hearth fire door 2 is opened forward, and shaft furnace fire door 5 upwards leaves, be convenient to fire door start and heating process in observation and sampling.The used refractory slab material thickness of the furnace bottom of two burner hearths is identical, also will reserve two fettling holes 7 that diameter is identical respectively on furnace bottom simultaneously, and fettling hole is used for the exchange of crucible between box burner hearth 3 and well type furnace 6; Furnace hearth plate 9 is the rectangle plate-like, can lifting.Be connected with hinge 8 for four jiaos at furnace hearth plate, hinge links to each other with electric hoist, finishes lifting by the control electric hoist.Four circular cone locating sleeves 10 have been welded at place, four angles in the furnace hearth plate bottom, are used for linking to each other with the rotary furnace collet.Settled the identical refractory plate of two block sizes at the furnace hearth plate middle part, the refractory material panel area is filled with fire-resistant cotton, simultaneously placing truncated cone-shaped hollow ball refractory brick 11 on the refractory plate, the centre distance of two bricks is identical with the centre distance in furnace bottom two holes, and the thickness of brick is identical with the furnace bottom thickness of anti-the material.Crucible is placed on the hollow ball refractory brick, just can realize the turnover burner hearth of crucible by the lifting of furnace hearth plate 9; On the elevator furnace chassis) under be furnace bottom holder 12, furnace bottom holder 12 effects are to realize that the crucible in box burner hearth 3 and the well type furnace 6 exchanges, the furnace bottom holder also is rectangle and is welded with four frustum of a cone alignment pins 14 at upper surface, size is just in time located with furnace hearth plate four circular cone locating sleeves, 10 couplings down, when furnace hearth plate drops in the furnace bottom holder 12, frustum of a cone alignment pin just in time is inserted in the circular cone locating sleeve, then by rotating before and after the driven by motor furnace hearth plate of turning cylinder 13 belows, being transferred that the crucible that is positioned on the hollow ball refractory brick 11 can be random is put under any burner hearth, and the furnace hearth plate 9 of rising is then sent into crucible in the burner hearth.Just can realize that by such mode the crucible in box burner hearth and the well type furnace exchanges.
Described two burner hearth furnace bottoms partly are fixed on the same furnace hearth plate, and the lifting of control furnace hearth plate realizes the lifting of two burner hearth bottom lifting platforms simultaneously; 1-8 locating hole arranged at the furnace hearth plate bottom.
A furnace bottom holder that parallels with furnace hearth plate is arranged below described furnace hearth plate, and there are feeler, a 1-8 alignment pin in furnace bottom jacking portion, on the vertical line direction of furnace hearth plate center rotating shaft is arranged; When furnace hearth plate dropped in the furnace bottom holder, the alignment pin in furnace hearth plate bottom locating hole and the furnace bottom holder was realized the coupling location, and stopped to descend by sensor control; By control furnace bottom holder rotation, make 180 ° of the common fast rotational of furnace bottom holder and furnace hearth plate then
The concrete using method of double-hearth high temperature smelting furnace of the present utility model is for can be divided into three kinds:
First kind is to use the high temperature box furnace thorax separately, heating-up temperature is below 1300 ℃, at first furnace hearth plate 9 is descended, up to the circular cone locating sleeve 10 of furnace hearth plate 9 belows fully with the furnace bottom holder on frustum of a cone alignment pin 14 identical, the crucible that will install material then is positioned on the hollow ball refractory brick 11 of box burner hearth 3 belows, rising furnace hearth plate 9 is sent to crucible in the box burner hearth 3, thereafter with use the monomer batch-type furnace the same, begin heating after configuring heating schedule by control cabinet 1.After heating finishes, can also can again furnace hearth plate be lowered for 9 times with the stove cooling, with crucible tongs crucible tongs is gone out then.
Second kind is to use the superhigh temperature well type furnace separately, promptly crucible is heated to 1300 ℃ ~ 1650 ℃ high temperature in the superhigh temperature well type furnace from room temperature, at first furnace hearth plate 9 is descended, up to the circular cone locating sleeve 10 of furnace hearth plate below fully with the furnace bottom holder on frustum of a cone alignment pin 14 identical, the crucible that will install material then is positioned on the hollow ball refractory brick 11 of box burner hearth below, press the turn knob on the control cabinet 1 again, furnace bottom holder 12 drives furnace hearth plate 9 and rotates backward, forward crucible to well type furnace 6 belows, furnace hearth plate 9 is risen to the furnace bottom place, thereafter the same with use monomer shaft furnace, configure by control cabinet 1 and to begin heating behind the heating schedule, after heating finishes, can lower for 9 times, again furnace hearth plate be rotated forward, with crucible tongs crucible tongs be gone out then with the stove cooling or with furnace hearth plate.
The third uses superhigh temperature well type furnace 6(promptly for continuity: use twin furnace simultaneously), the concrete operations mode is, when superhigh temperature well type furnace 6 is heated to from room temperature after high temperature heats end for the first time, at this moment the temperature of the hollow ball refractory brick 11 of in the well type furnace 6 and below is all very high, because the crucible hot-cracking resistance is poor, therefore can't directly crucible be put on the hollow ball refractory brick 11 of rear end well type furnace 6 belows and and be sent in the well type furnace 6 it, room temperature by the temperature cooling in the well type furnace of lowering the temperature naturally can need long time simultaneously, when being elevated to 1600 ℃ of left and right sides as the temperature in the well type furnace 6, be reduced to room temperature and may need 5 ~ 7 hours, add and heated up required about 3 hours, finishing once, experiment approximately needs 10 hours, so not only increased consumption of electric, experimental expenses and waste of time, reduced the service efficiency of stove simultaneously, the more important thing is and slowed down the experiment progress.
For fear of these deficiencies, after the temperature of well type furnace 6 is heated to the high-temperature region from room temperature, the surplus temperature of stove should be used.Therefore when using stove continuously, operating sequence is for after shaft furnace heats end for the first time, stop the heating of well type furnace 6, furnace hearth plate 9 is lowered, at this moment the hollow ball refractory brick 11 under the box burner hearth 3 of front end is in room temperature state, therefore can directly crucible be put thereon, and then crucible risen in the box burner hearth 3, in about 1 hour, be rapidly heated 1200 ℃, temperature in this 1 hour in the well type furnace 6 approximately also is reduced to about 1200 ℃, at this moment furnace hearth plate 9 is dropped in the furnace bottom holder 12, the turn knob of pressing then on the control box 1 rotates backward furnace hearth plate 9, forward the crucible of preheating to rear end well type furnace 6 belows, the furnace hearth plate 9 that rises at last is sent to crucible and continues heating in the well type furnace 6, can lower crucible is taken out for convenience after heating finishes with the stove cooling or with furnace hearth plate 9, rotary furnace chassis 9 makes crucible forward box burner hearth 3 belows of front end to forward, with crucible tongs crucible tongs is gone out then.Simultaneously shaft furnace 6 heating and pick and place crucible during this period of time in batch-type furnace fire door 2 is opened, because the fire door 2 big radiating rates of batch-type furnace are very fast, temperature in the therefore box burner hearth 3 can drop to room temperature, so just can proceed experiment according to aforesaid operations, and experiment can be carried out continuously.
The characteristics of double-hearth high temperature smelting furnace of the present utility model are that high temperature box furnace thorax 3 and superhigh temperature well type furnace 6 not only can use separately, the more important thing is that they can coordinate to use together, particularly when using high-temperature burner hearth continuously, first with the high temperature box furnace thorax with the crucible preheating, in the superhigh temperature well type furnace, continue heating then, so not only can avoid crucible because the hot crackability difference can't directly at high temperature heat, the service efficiency that more valuable is can improve the superhigh temperature well type furnace, accelerate the experiment progress, save time.By the lifting of furnace hearth plate and the rotation of furnace bottom holder, crucible can make things convenient for, safe, efficient turnover burner hearth reaches the transposing between two burner hearths, avoids hot crucible to be exposed to air for a long time and causes it to break simultaneously.
Description of drawings
Fig. 1 is the utility model structural representation
1-control cabinet; 2-box burner hearth fire door; 3-box burner hearth; 4-thermal insulation fire-resistant material dividing plate; 5-well type furnace fire door; 6-well type furnace; 7-fettling hole; 8-hinge; 9-furnace hearth plate; 10-circular cone locating sleeve; 11-hollow ball refractory brick; The holder of 12-furnace bottom; 13-turning cylinder; 14-frustum of a cone alignment pin.
The specific embodiment
According to Fig. 1 and with the fusing vessel slag is that example is further described the utility model embodiment:
The main component of converter slag is SiO
2, CaO, Al
2O
3, MgO, FeO, Fe
2O
3And simple substance Fe, its fusing point is about 1600 ℃, with magnesia crucible its fusing is experimentized.
At first load weighted converter slag is packed in the crucible, furnace hearth plate is incited somebody to action for 9 times, owing to be to heat up for the first time, hollow ball refractory brick 11 and burner hearth all are in room temperature, therefore can directly crucible be placed on the front end hollow ball refractory brick 11 of box burner hearth 3 belows, the button furnace bottom holder 12 drive furnace hearth plates of pressing then on the control cabinet 19 that forward to rotate backward, make crucible forward well type furnace 6 belows of rear end to, can avoid like this crucible directly is put on the rear end well type furnace 6 below hollow ball refractory brick because the unhandy drawback that operating distance length causes.Then press the rising button on the control cabinet 1, after rising furnace hearth plate 9 is delivered to crucible in the well type furnace 6, be raised to 1200 ℃ according to 2 hours from room temperature, be raised to 1600 ℃ of temperature increasing schedules that heat since 1200 ℃ in 1 hour and begin heating, by the time after temperature is raised to 1600 ℃, stop again furnace hearth plate 9 to be descended after well type furnace 6 heating, and then rotary furnace collet 12 forwards crucible to front end forward, with crucible tongs crucible tongs is gone out.
In order to accelerate the experiment progress, improve conventional efficient, after finishing a converter slag fusing, need to continue the fusing converter slag and experimentize.Because the temperature of the hollow ball refractory brick 11 that at this moment heated with crucible in well type furnace 6 just now is very high, and the hollow ball refractory brick 11 in the box burner hearth 3 still is in room temperature state owing to do not heat it, therefore crucible can only be positioned on the hollow ball refractory brick 11 that is in room temperature, and because experimental furnace chassis 9 rotation last time, at this moment the hollow ball refractory brick 11 of room temperature is in the below of the well type furnace of rear end, the hollow ball refractory brick 11 of high temperature is in the box burner hearth 3 interior belows of front end, so needed the furnace bottom holder 12 that rotates backward again behind the EO in last time, forward the hollow ball refractory brick 11 of room temperature to front end, the crucible that to contain honest material is then put thereon, and rising furnace hearth plate 9 delivers to crucible in the box burner hearth 3, is raised to 1200 ℃ from room temperature according to temperature increasing schedule in 1 hour then.At this 1 hour and got before that the temperature in the well type furnace 6 has also dropped to about 1200 ℃ in time of crucible.After box burner hearth 3 temperature reach 1200 ℃, furnace hearth plate 9 is descended and the furnace bottom holders 12 that rotate backward, forward crucible to rear end well type furnace 6 belows and then rising furnace hearth plate 9 crucible of preheating is sent in the well type furnace 6, continue to be heated to 1600 ℃ again.Simultaneously shaft furnace 6 heating and pick and place crucible during this period of time in batch-type furnace fire door 2 is opened, because the stove gate 2 big radiating rates of batch-type furnace are very fast, temperature in the therefore box burner hearth 3 just can drop to room temperature again, then continues then can according to the aforesaid operations method again if continue the fusing vessel slag.
By the continuous operation of above this group, crucibles in the box burner hearth 3 are transferred in the well type furnace 6 approximately only needs 30 seconds, transfer to from a box burner hearth of monomer than the crucible that manually clips preheating that the used time significantly reduces in the well type furnace with crucible tongs, avoided because hot crucible is exposed to for a long time and causes the hot tearing fragmentation in the air, security simultaneously also improves greatly, has reduced owing to shift the generation of accident in the crucible process.
Compare with monomer superhigh temperature shaft furnace, need 3 hours if use shaft furnace that converter slag is raised to 1600 ℃ of fusings from room temperature separately, making burner hearth drop to room temperature from 1600 ℃ approximately needs 7 ~ 8 hours, so converter slag of fusion approximately needs about 10 hours.And the utility model only needs slag box burner hearth in be preheating to 1200 ℃ in 1 hour when the continuous fusion converter slag, needed 1 hour in well type furnace, to be heated to 1600 ℃ again from 1200 ℃, thereby melt vessel slag and only need 2 hours, therefore improved the service efficiency of stove greatly, shortened experimental period, saved the plenty of time.
Claims (3)
1. double-hearth high temperature smelting furnace, its feature comprises control cabinet (1), box burner hearth fire door (2), box burner hearth (3), thermal insulation fire-resistant material dividing plate (4), well type furnace fire door (5), well type furnace (6), fettling hole (7), hinge (8), furnace hearth plate (9), circular cone locating sleeve (10), hollow ball refractory brick (11), furnace bottom holder (12), turning cylinder (13), frustum of a cone alignment pin (14); Box burner hearth (3) and well type furnace (6) are arranged in the sustained height place of stove upper end, and the centre is separated by thermal insulation fire-resistant material dividing plate (4); Box burner hearth fire door (2) is opened forward simultaneously, and shaft furnace fire door (5) upwards leaves; The used refractory slab material thickness of the furnace bottom of two burner hearths is identical, also will reserve two fettling holes (7) that diameter is identical simultaneously on furnace bottom respectively, and fettling hole is used for the exchange of crucible between box burner hearth (3) and well type furnace (6); Furnace hearth plate (9) is the rectangle plate-like, the energy lifting; Be connected with hinge (8) four jiaos of furnace hearth plates, hinge links to each other with electric hoist, finishes lifting by the control electric hoist; Four circular cone locating sleeves (10) have been welded at place, four angles in the furnace hearth plate bottom, are used for linking to each other with the rotary furnace collet; Settled the identical refractory plate of two block sizes at the furnace hearth plate middle part, the refractory material panel area is filled with fire-resistant cotton, simultaneously placing truncated cone-shaped hollow ball refractory brick (11) on the refractory plate, the centre distance of two bricks is identical with the centre distance in furnace bottom two holes, and the thickness of brick is identical with the furnace bottom thickness of anti-the material; Crucible is placed on the hollow ball refractory brick, just can realize the turnover burner hearth of crucible by the lifting of furnace hearth plate (9); Under elevator furnace chassis (9) furnace bottom holder (12), furnace bottom holder (12) can realize that the crucible in box burner hearth (3) and the well type furnace (6) exchanges, the furnace bottom holder also is rectangle and is welded with four frustum of a cone alignment pins (14) at upper surface, frustum of a cone alignment pin size just in time with furnace hearth plate under four circular cone locating sleeves (10) coupling location, when furnace hearth plate drops in the furnace bottom holder (12), frustum of a cone alignment pin just in time is inserted in the circular cone locating sleeve, then by rotating before and after the driven by motor furnace hearth plate of turning cylinder (13) below, random being transferred of crucible energy that is positioned on the hollow ball refractory brick (11) is put under any burner hearth, and the furnace hearth plate (9) that rises is then sent into crucible in the burner hearth.
2. double-hearth high temperature smelting furnace as claimed in claim 1 is characterized in that two burner hearth furnace bottoms partly are fixed on the same furnace hearth plate, and the lifting of control furnace hearth plate realizes the lifting of two burner hearth bottom lifting platforms simultaneously; 1-8 locating hole arranged at the furnace hearth plate bottom.
3. double-hearth high temperature smelting furnace as claimed in claim 1 or 2, it is characterized in that the furnace bottom holder that below furnace hearth plate, has one to parallel with furnace hearth plate, there are feeler, a 1-8 alignment pin in furnace bottom jacking portion, on the vertical line direction of furnace hearth plate center rotating shaft is arranged; When furnace hearth plate dropped in the furnace bottom holder, the alignment pin in furnace hearth plate bottom locating hole and the furnace bottom holder was realized the coupling location, and stopped to descend by sensor control; By control furnace bottom holder rotation, make 180 ° of the common fast rotational of furnace bottom holder and furnace hearth plate then.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205219309U CN201837231U (en) | 2010-09-08 | 2010-09-08 | Double-hearth high-temperature smelting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205219309U CN201837231U (en) | 2010-09-08 | 2010-09-08 | Double-hearth high-temperature smelting furnace |
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| Publication Number | Publication Date |
|---|---|
| CN201837231U true CN201837231U (en) | 2011-05-18 |
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ID=44007342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205219309U Expired - Fee Related CN201837231U (en) | 2010-09-08 | 2010-09-08 | Double-hearth high-temperature smelting furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201837231U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109945642A (en) * | 2019-03-26 | 2019-06-28 | 杭州而然科技有限公司 | A kind of metal oxide ceramic Fast Sintering furnace and its sintering process |
| CN114919053A (en) * | 2022-05-23 | 2022-08-19 | 氢环环保科技(上海)有限公司 | Continuous artificial marble manufacturing device and manufacturing method |
-
2010
- 2010-09-08 CN CN2010205219309U patent/CN201837231U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109945642A (en) * | 2019-03-26 | 2019-06-28 | 杭州而然科技有限公司 | A kind of metal oxide ceramic Fast Sintering furnace and its sintering process |
| CN109945642B (en) * | 2019-03-26 | 2023-10-24 | 杭州而然科技有限公司 | Rapid sintering furnace and sintering process for metal oxide ceramic material |
| CN114919053A (en) * | 2022-05-23 | 2022-08-19 | 氢环环保科技(上海)有限公司 | Continuous artificial marble manufacturing device and manufacturing method |
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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: 20110518 Termination date: 20120908 |