CN108662901A - Sintering kiln for ceramics - Google Patents
Sintering kiln for ceramics Download PDFInfo
- Publication number
- CN108662901A CN108662901A CN201810564008.9A CN201810564008A CN108662901A CN 108662901 A CN108662901 A CN 108662901A CN 201810564008 A CN201810564008 A CN 201810564008A CN 108662901 A CN108662901 A CN 108662901A
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- thermal current
- temperature
- preheating zone
- material conveying
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- 239000000919 ceramic Substances 0.000 title claims abstract description 43
- 238000005245 sintering Methods 0.000 title claims abstract description 43
- 239000000463 material Substances 0.000 claims abstract description 74
- 238000010438 heat treatment Methods 0.000 claims abstract description 55
- 238000001816 cooling Methods 0.000 claims abstract description 33
- 239000007789 gas Substances 0.000 claims description 70
- 238000005192 partition Methods 0.000 claims description 7
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- 229910006295 Si—Mo Inorganic materials 0.000 claims description 5
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 239000003345 natural gas Substances 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 description 7
- 239000005416 organic matter Substances 0.000 description 6
- 239000002918 waste heat Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000000280 densification Methods 0.000 description 2
- 230000007717 exclusion Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052573 porcelain Inorganic materials 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000011797 cavity material Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004018 waxing Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B17/00—Furnaces of a kind not covered by any preceding group
Abstract
The invention discloses a kind of sintering kilns for ceramics, including furnace body, furnace body has feed inlet, material conveying passage and discharge port, material conveying passage is placed with preheating zone, high-temperature region and cooling zone successively from feed inlet to discharge port, the bottom of material conveying passage, which has, circulates for high temperature gas flow and carries out heating to material conveying passage using high temperature gas flow and carry out the thermal current flow-guiding channel of heating preheating to preheating zone, and the output end of thermal current flow-guiding channel is connected to preheating zone；In the air-flow influent stream end of high-temperature region, the air-flow output of high-temperature region, cooling zone at least one at be equipped with for being connected to thermal current flow-guiding channel so that high temperature gas flow to be delivered to the connectivity structure in thermal current flow-guiding channel；The thermal current circulating line for the high temperature gas flow of cooling zone to be delivered to preheating zone for preheating zone heating preheating is equipped between cooling zone and preheating zone.
Description
Technical field
The present invention relates to high technology ceramics sintering technology fields, particularly, are related to a kind of sintering kiln for ceramics.
Background technology
Kiln is the equipment to burnt product being built into refractory material, is that the indispensability in pottery art hot-injection molding is set
It applies.And in novel electronic ceramics manufacture craft, the high-volume of ceramic de-waxing and sintering is required for by kiln.Pottery
The sintering process of porcelain is the process that ceramic body is densified at high temperature, is mainly used for：By the cavity between ceramic body endoparticle
It excludes, a small amount of gas and impurity organic matter is excluded, make mutually growth combination between particle.
Existing ceramic post sintering mainly uses tunnel oven, is heated at high temperature in tunnel stage casing, material is by tunnel with reality
Show sintering circuit, the temperature in tunnel is difficult to control, and the residence time of material is also unable to control, and leads to the heating ladder of ceramic post sintering
Degree is unable to control, and too fast heating is easy to cause in material and generates bubble, material deformation and material problems of crack, serious shadow
Ring the qualification rate to ceramic product；
On the other hand, existing furnace construction will produce the exhaust gas discharge that a large amount of bands have surplus heat during manufacture craft,
It is easy to cause energy waste；Existing most kiln is all directly to discharge the exhaust in air, be easy to cause atmosphere pollution.
Invention content
The present invention provides a kind of sintering kilns for ceramics, and to solve existing furnace construction, heating is too fast to be easy to lead
It causes to generate bubble, material deformation and material problems of crack in material, seriously affects the qualification rate of ceramic product；Exhaust gas and
Waste heat discharging directly into atmosphere, the technical issues of polluting.
The present invention provides a kind of sintering kiln for ceramics, including furnace body, and furnace body has feed inlet, material conveying passage
And discharge port, material conveying passage are placed with preheating zone, high-temperature region and cooling zone successively from feed inlet to discharge port, material is defeated
It send the bottom in channel to have to circulate for high temperature gas flow and material conveying passage heat and to described using high temperature gas flow
Preheating zone carries out the thermal current flow-guiding channel of heating preheating, and the output end of thermal current flow-guiding channel is connected to preheating zone；High-temperature region
Air-flow influent stream end, the air-flow output of the high-temperature region, be equipped with for being connected to the hot gas at least one in cooling zone
High temperature gas flow to be delivered to the connectivity structure in thermal current flow-guiding channel by conductance circulation road；It is equipped between cooling zone and preheating zone
For the high temperature gas flow of the cooling zone to be delivered to the preheating zone so that the thermal current of preheating zone heating preheating recycles
Pipeline.
Further, thermal current flow-guiding channel is in the part composition of preheating zone bottom for carrying out heating ladder to preheating zone
The temperature-controlled area of control is spent, temperature-controlled area includes multiple temperature control units arranged along material conveying direction, temperature control
Unit processed is connected to the different zones of preheating zone and exports high temperature gas flow to control the heating gradient of preheating zone respectively；Temperature controls
Unit is connected to thermal current flow-guiding channel respectively, and temperature control unit output end is laid towards material conveying passage.
Further, be equipped with partition board for high temperature gas flow to be isolated between adjacent temperature control unit, partition board in furnace body
There are the passage gaps being circulated through for high temperature gas flow between the face of bottom of chamber, set between material conveying passage and temperature control unit
It is useful for providing the power plant for conveying power from material conveying passage to the air-flow in temperature control unit direction.
Further, multiple passage gaps are arranged in order along material conveying direction, the gap width of passage gaps it is identical or
Gap width is different.
Further, temperature control unit passes through extension tube attached using the individual cavities body being isolated from each other, material conveying passage
Be respectively communicated to each temperature control unit, between material conveying passage and extension tube attached and extension tube attached and temperature control unit it
Between be equipped be used for high temperature gas flow flow and temperature controlled control device.
Further, the insulating layer kept the temperature for tube cavity is covered in extension tube attached.
Further, connectivity structure is using the embedded pipe being embedded in furnace body wall body；And/or connectivity structure uses and is in stove
External outer tube is covered with the insulating layer kept the temperature for tube cavity on outer tube；And/or connectivity structure is defeated using material is opened in
Send the stomata that airflow is used between channel and thermal current flow-guiding channel.
Further, the output end of connectivity structure opens up and/or the output of connectivity structure from discharge port to feed inlet direction
End is opened up from material conveying passage to thermal current flow-guiding channel direction.
Further, the heat source for being heated to furnace body inner cavity is laid in high-temperature region.
Further, heat source is using combustion of natural gas heating or Si-Mo rod electrical heating.
The invention has the advantages that：
Sintering kiln of the present invention for ceramics, it is near high-temperature region that high temperature gas flow is defeated by connectivity structure guiding material
The thermal current flow-guiding channel of the bottom of the channel, the high temperature gas flow in thermal current flow-guiding channel is sent to be formed from discharge port to feed inlet direction
Falling temperature gradient constitutes material conveying while the air-flow in thermal current flow-guiding channel heats the bottom of material conveying passage
From feed inlet to the heating gradient in discharge port direction in channel, to be matched with the heating gradient curve needed for ceramic post sintering, then by
High temperature gas flow is controlled and is directed into preheating zone by thermal current flow-guiding channel, while will be circulated to cooling by thermal current circulating line
The high temperature gas flow in area is transmitted to preheating zone, and the air-flow of last preheating zone enters high-temperature region and further heats, air-flow from preheating zone to
The heating of high-temperature region tends to be steady, and the intergranular cavity in material, gas and impurity organic matter slowly exclude, and make particle it
Between mutually grown junction sum velocity and the slow exclusion speed of empty, gas and impurity organic matter match, after reaching sintering
Ceramic product equably, fully realize the purpose of densification.Material conveying passage, connectivity structure and thermal current water conservancy diversion are logical
Road constitutes a closed loop of air-flow so that high-temperature heating and recycling of the air-flow by high-temperature region reduce waste heat
The probability discharged, while also realizing the heating control of preheating zone, to achieve the purpose that high efficiency of energy utilizes and environmentally friendly.Object
Another closed loop that transfer passage and thermal current circulating line constitute air-flow is flowed, it will be from by thermal current circulating line
The high temperature gas flow that high-temperature region enters cooling zone is delivered to preheating zone in time, and high temperature gas flow is avoided to be detained cooling in cooling zone and cause
Heat losses and be unable to get sufficient utilization, to achieve the purpose that high efficiency of energy utilizes and environmentally friendly.
Other than objects, features and advantages described above, the present invention also has other objects, features and advantages.
Below with reference to figure, the present invention is described in further detail.
Description of the drawings
The attached drawing constituted part of this application is used to provide further understanding of the present invention, schematic reality of the invention
Example and its explanation are applied for explaining the present invention, is not constituted improper limitations of the present invention.In the accompanying drawings：
Fig. 1 is one of the structural schematic diagram of sintering kiln for ceramics of the preferred embodiment of the present invention；
Fig. 2 is the second structural representation of the sintering kiln for ceramics of the preferred embodiment of the present invention；
Fig. 3 is the third structural representation of the sintering kiln for ceramics of the preferred embodiment of the present invention；
Fig. 4 is the four of the structural schematic diagram of the sintering kiln for ceramics of the preferred embodiment of the present invention.
Marginal data：
1, furnace body；2, feed inlet；3, material conveying passage；301, preheating zone；302, high-temperature region；303, cooling zone；4, go out
Material mouth；5, thermal current flow-guiding channel；6, connectivity structure；601, outer tube；602, stomata；7, temperature control unit；701, partition board；
702, passage gaps；703, power plant；704, extension tube attached；705, control device；706, heat transfer hole；8, heat source；9, thermal current
Circulating line.
Specific implementation mode
The embodiment of the present invention is described in detail below in conjunction with attached drawing, but the present invention can be limited by following and
The multitude of different ways of covering is implemented.
Fig. 1 is one of the structural schematic diagram of sintering kiln for ceramics of the preferred embodiment of the present invention；Fig. 2 is the present invention
The second structural representation of the sintering kiln for ceramics of preferred embodiment；Fig. 3 is the preferred embodiment of the present invention for making pottery
The third structural representation of the sintering kiln of porcelain；Fig. 4 is the structure of the sintering kiln for ceramics of the preferred embodiment of the present invention
The four of schematic diagram.
As shown in Figure 1, the sintering kiln for ceramics of the present embodiment, including furnace body 1, furnace body 1 have feed inlet 2, object
Material transfer passage 3 and discharge port 4, material conveying passage 3 are placed with preheating zone 301, high temperature successively from feed inlet 2 to discharge port 4
Area 302 and cooling zone 303, the bottom of material conveying passage 3, which has, circulates for high temperature gas flow and utilizes high temperature gas flow to object
Material transfer passage 3 carries out heating and carries out the thermal current flow-guiding channel 5 of heating preheating, thermal current flow-guiding channel 5 to preheating zone 301
Output end be connected to preheating zone 301；Air-flow influent stream end, the air-flow output of high-temperature region 302, the cooling zone 303 of high-temperature region 302
In at least one at be equipped with for being connected to thermal current flow-guiding channel 5 so that high temperature gas flow to be delivered in thermal current flow-guiding channel 5
Connectivity structure 6；It is equipped between cooling zone 303 and preheating zone 301 for the high temperature gas flow of cooling zone 303 to be delivered to preheating zone
The 301 thermal current circulating lines 9 preheated for the heating of preheating zone 301.Sintering kiln of the present invention for ceramics, from high-temperature region
302 are nearby oriented to high temperature gas flow by connectivity structure 6 the thermal current flow-guiding channel 5 of 3 bottom of material conveying passage, hot gas conductance
High temperature gas flow in circulation road 5 forms falling temperature gradient, the air-flow in thermal current flow-guiding channel 5 from discharge port 4 to 2 direction of feed inlet
It is constituted while heating to the bottom of material conveying passage 3 in material conveying passage 3 from feed inlet 2 to 4 direction of discharge port
Heating gradient, to be matched with the heating gradient curve needed for ceramic post sintering, the air-flow in reheating air flow guiding channel 5 is to material
High temperature gas flow is controlled by thermal current flow-guiding channel 5 while the bottom of transfer passage 3 is heated and is directed into preheating zone 301
It is interior, while the high temperature gas flow for being circulated to 303 top of cooling zone is transmitted to by preheating zone 301 by thermal current circulating line 9, finally
The air-flow of preheating zone 301 enters high-temperature region 302 and further heats, and heating gradient of the air-flow from preheating zone 301 to high temperature tends to be flat
Surely, intergranular cavity, gas and the impurity organic matter in material slowly exclude, and make mutual grown junction sum velocity between particle
Match with the slow exclusion speed of cavity, gas and impurity organic matter, to reach sintered ceramic product equably, it is complete
The purpose of densification is realized entirely.Material conveying passage 3, connectivity structure 6 and thermal current flow-guiding channel 5 constitute one of air-flow
Closed loop so that high-temperature heating and recycling of the air-flow by high-temperature region 302, reduction waste heat discharge several
Rate, while also realizing the heating control of preheating zone 301, to achieve the purpose that high efficiency of energy utilizes and environmentally friendly.Logistics delivery is logical
Road 3 constitutes another closed loop of air-flow with thermal current circulating line 9, will be from high temperature by thermal current circulating line 9
The high temperature gas flow that area 302 enters cooling zone 303 is delivered to preheating zone 301 in time, avoids high temperature gas flow from being detained in cooling zone 303 cold
But lead to heat losses and be unable to get sufficient utilization, to achieve the purpose that high efficiency of energy utilizes and environmentally friendly.Optionally, even
Logical structure 6 is equipped with conveys power for providing from high-temperature region 302 and/or cooling zone 303 to the air-flow of thermal current flow-guiding channel 5
Power plant 703.The air flow rate and flow velocity of thermal current flow-guiding channel 5 are delivered to for controlling connectivity structure 6, to control
Cavity temperature in thermal current flow-guiding channel 5, for material conveying passage 3 uniformly add from 3 bottom of material conveying passage
Heat, while the temperature for being delivered to 301 air-flow of preheating zone can be also controlled, so as in the temperature to heating gradient in preheating zone 301
Limit control.Optionally, the input terminal of thermal current circulating line 9 is equipped with for providing from cooling zone 303 to thermal current circulating line 9
Air-flow conveying power power plant 703.Optionally, thermal current circulating line 9 is set to the top or side of furnace body 1.It is optional
Ground is equipped with more thermal current circulating lines 9 being circumferentially arranged along furnace body 1, cooling zone 303 between cooling zone 303 and preheating zone 301
High temperature gas flow be delivered to preheating zone 301 by more thermal current circulating lines 9.Optionally, thermal current circulating line 9 is equipped with one
A air inlet and a gas outlet.The high temperature gas flow of cooling zone 303 is entered by air inlet in thermal current circulating line 9, then is led to
It crosses a gas outlet and enters preheating zone 301.Optionally, thermal current circulating line 9 sets that there are one air inlets and defeated along preheating zone 301
The multiple gas outlets for sending direction to arrange.Optionally, thermal current circulating line 9 is equipped with arranges along 303 air-flow conveying direction of cooling zone
Multiple air inlets and along 301 conveying direction of preheating zone arrangement multiple gas outlets.The high temperature gas flow of cooling zone 303 passes through air inlet
Mouth enters in thermal current circulating line 9, then enters preheating zone 301 by gas outlet.The High Temperature Gas of the different zones of cooling zone 303
Stream is entered in thermal current circulating line 9 by multiple air inlets and is formed to 2 direction of feed inlet along discharge port 4 in flow process
Falling temperature gradient, the high temperature gas flow of different temperatures enter the different zones of preheating zone 301 by multiple gas outlets, to make preheating zone
301 form heating gradient along material conveying direction, with the heating gradient curve needed for match with ceramic sintering.Optionally, outside furnace body 1
Equipped with insulating layer.Optionally, insulating layer is insulation cotton, heat preservation thermal insulation brick, heat preservation non-woven fabrics etc..It can improve in furnace body 1
Temperature upper limit, avoid temperature to external diffusion, be conducive to the utilization rate for improving the energy.Optionally, 4 position of discharge port is equipped with and is used for
The residual heat air current at 4 position of discharge port is oriented to the waste heat diversion pipe in 2 direction of feed inlet, waste heat diversion pipe is equipped with for providing gas
The power plant 703 of stream conveying power.The residual heat air current for being delivered to feed inlet 2 can be without constraint, and forms material conveying
The pre-heated air flow in direction；Being delivered to the residual heat air current of feed inlet 2 can also constrain to form gas curtain, to shield feed inlet 2, avoid gas
The inside and outside generation air-flow exchange of material mouth 2 and temperature exchange are flowed into, to improve energy utilization rate.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, in the present embodiment, thermal current flow-guiding channel 5 is in 301 bottom of preheating zone
Part constitutes the temperature-controlled area for carrying out heating gradient control to preheating zone 301, and temperature-controlled area includes multiple along material
The temperature control unit 7 of conveying direction arrangement, temperature control unit 7 are respectively used to be connected to simultaneously with the different zones of preheating zone 301
High temperature gas flow is exported to control the heating gradient of preheating zone 301；Temperature control unit 7 is connected to thermal current flow-guiding channel 5 respectively,
7 output end of temperature control unit is laid towards material conveying passage 3.High temperature gas flow in thermal current flow-guiding channel 5 sequentially enters
In multiple temperature control units 7, it is gradual along the conveying direction of thermal current flow-guiding channel 5 that multiple temperature control units 7 form temperature
The temperature gradient of reduction, then air-flow is delivered to by preheating zone 301 by hole 706 of conducting heat respectively by multiple temperature control units 7
Different zones, to make the air-flow of preheating zone 301 form heating gradient along material conveying direction, the air-flow of preheating zone 301 by
Enter high-temperature region 302 after step heating to heat, heating gradient tends to be steady, and intergranular cavity, gas and the impurity in material have
Machine object slowly excludes in sintering process.
As shown in Figure 3 and Figure 4, in the present embodiment, by for high temperature gas flow to be isolated between adjacent temperature control unit 7
Partition board 701.It avoids generating temperature interference between temperature control unit 7, so that it is guaranteed that the accurate control to 301 heating gradient of preheating zone
System.There are the passage gaps 702 being circulated through for high temperature gas flow between 1 inner chamber bottom surface of partition board 701 and furnace body.Using between circulation
Gap 702 controls the high temperature gas flow conveying capacity that each temperature control unit 7 is entered by thermal current flow-guiding channel 5, to realization pair
301 heating gradient of preheating zone accurately controls.It is equipped between material conveying passage 3 and temperature control unit 7 for providing by object
Expect that transfer passage 3 conveys the power plant 703 of power to the air-flow in 7 direction of temperature control unit.It is controlled using power plant 703
The high temperature gas flow conveying capacity that each temperature control unit 7 is entered by thermal current flow-guiding channel 5, utilizes thermal current flow-guiding channel 5
The fed distance for being connected to each temperature control unit 7 is different, and is circulated to each temperature control from each passage gaps 702
The air-flow throughput of unit 7 is different, is accurately controlled to 301 heating gradient of preheating zone to realize, utilizes structure automation reality
The control of existing 301 heating gradient of preheating zone.
As shown in Figure 3 and Figure 4, in the present embodiment, multiple passage gaps 702 are arranged in order along material conveying direction.Such as Fig. 2
Shown, the gap width of passage gaps 702 is identical, and full utilization thermal current flow-guiding channel 5 is connected to each temperature control unit 7
Fed distance it is different, it is different using the cooling degree of far and near distance, to realize the accurate control of 301 heating gradient of preheating zone
System.As shown in figure 3, the gap width of passage gaps 702 is different, each temperature control is circulated to using from each passage gaps 702
The air-flow throughput of unit 7 processed is different, is accurately controlled to 301 heating gradient of preheating zone to realize, utilizes structure automation
Realize the control of 301 heating gradient of preheating zone.
As shown in figure 4, in the present embodiment, the gap width of passage gaps 702 is successively increased along material conveying direction.It utilizes
The air-flow throughput that each temperature control unit 7 is circulated to from each passage gaps 702 is different, is formed and controls list to each temperature
The temperature of member 7 influences difference, and air-flow fed distance is closer and the bigger temperature influence of airflow amount is bigger, and air-flow fed distance is got over
The smaller temperature influence of remote and airflow amount is smaller, is correspondingly formed the heating gradient variation in preheating zone 301 as along material conveying
Direction is slowly heated up, and the control of 301 heating gradient of preheating zone is realized using structure automation, to realize to 301 liters of preheating zone
Warm gradient accurately controls.
As shown in Figure 1, in the present embodiment, temperature control unit 7 is using the individual cavities body being isolated from each other.Material conveying is logical
Road 3 is respectively communicated to each temperature control unit 7 by extension tube attached 704.Between material conveying passage 3 and extension tube attached 704 and
It is equipped between extension tube attached 704 and temperature control unit 7 and is used for high temperature gas flow flow and temperature controlled control device 705.It is each
Temperature control unit 7 uses independently to 301 conveying high-temperature gas of preheating zone to change the individual cavities body of corresponding region temperature.Profit
The air flow rate and gas flow temperature for entering each temperature control unit 7 with the control of control device 705, to control each temperature control
Unit 7 processed enters to the air flow rate and gas flow temperature of corresponding region in preheating zone 301, to realize to heating in preheating zone 301
Gradient accurately controls.
In the present embodiment, the insulating layer kept the temperature for tube cavity is covered in extension tube attached 704.For avoiding high temperature gas flow
Temperature loss in transmission process improves energy utilization rate.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, in the present embodiment, connectivity structure 6 uses and is embedded in burying in 1 wall body of furnace body
If pipe；And/or connectivity structure 6 is using the outer tube 601 outside the furnace body 1, is covered on outer tube 601 and is kept the temperature for tube cavity
Insulating layer；And/or connectivity structure 6 uses to be opened between material conveying passage 3 and thermal current flow-guiding channel 5 and is used for airflow
Stomata 602.The different mode of communicating of selection connectivity structure 6 as needed, improves the height entered in thermal current flow-guiding channel 5
The temperature of warm air flow amount and high temperature gas flow, in order to be realized in preheating zone 301 by each temperature control unit 7
Heating gradient controls.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, in the present embodiment, the output end of connectivity structure 6 is from discharge port 4 to feed inlet 2
Direction opens up and/or the output end of connectivity structure 6 is opened up from material conveying passage 3 to 5 direction of thermal current flow-guiding channel.It can
The air-flow motive force to 7 direction of temperature control unit is formed in thermal current flow-guiding channel 5, is not only improved to material conveying passage
3 bottoms carry out heat temperature raising, and can improve the high temperature gas flow flow into each temperature control unit 7 and the high temperature of entrance
The gas flow temperature upper limit, to which the convenient heating gradient in preheating zone 301 controls.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, in the present embodiment, be laid in high-temperature region 302 for 1 inner cavity of furnace body into
The heat source 8 of row heating.For carrying out continuous heating to the high-temperature region 302 in furnace body 1, to ensure to meet the temperature of ceramic body sintering
Degree requires, while meeting and being passed through to the slow heating gradient of composition in preheating zone 301, to exclude the cavity in ceramic body, gas
And mutually growth combination between particle is arranged and promoted to impurity organic matter, improves the compactness of ceramic post sintering product.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, in the present embodiment, heat source 8 is heated using combustion of natural gas or Si-Mo rod electricity adds
Heat.It can be needed to select different heat sources 8 according to sintering temperature to meet sintering temperature requirement.Optionally, position is arranged in Si-Mo rod
It is set in 1 wall body of furnace body or on the wall body of 1 inner cavity of furnace body.Si-Mo rod is set to the both sides of furnace body 1 and/or set on the top of furnace body 1
Portion.It can require to select different heat source installation positions according to chamber size, material type, sintering in furnace body 1, to ensure to be sintered
Quality.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of sintering kiln for ceramics, including furnace body (1),
The furnace body (1) has feed inlet (2), material conveying passage (3) and discharge port (4),
The material conveying passage (3) is placed with preheating zone (301), height from the feed inlet (2) to the discharge port (4) successively
Warm area (302) and cooling zone (303),
It is characterized in that,
The bottom of the material conveying passage (3), which has, circulates for high temperature gas flow and high temperature gas flow is utilized to convey the material
Channel (3) carries out heating and the preheating zone (301) is carried out with the thermal current flow-guiding channel (5) of heating preheating, the thermal current
The output end of flow-guiding channel (5) is connected to the preheating zone (301)；
In the air-flow influent stream end of the high-temperature region (302), the air-flow output of the high-temperature region (302), the cooling zone (303)
At least one at be equipped with for being connected to the thermal current flow-guiding channel (5) so that high temperature gas flow is delivered to thermal current flow-guiding channel
(5) connectivity structure (6) in；
It is equipped between the cooling zone (303) and the preheating zone (301) for the high temperature gas flow of the cooling zone (303) is defeated
Thermal current circulating line (9) for the preheating zone (301) heating preheating is sent to the preheating zone (301).
2. the sintering kiln according to claim 1 for ceramics, which is characterized in that
The part that the thermal current flow-guiding channel (5) is in the preheating zone (301) bottom is constituted for the preheating zone
(301) temperature-controlled area of heating gradient control is carried out, the temperature-controlled area includes multiple arranging along material conveying direction
Temperature control unit (7), the temperature control unit are connected to the different zones of the preheating zone (301) and export high temperature respectively
Air-flow is to control the heating gradient of the preheating zone (301)；
The temperature control unit (7) is connected to the thermal current flow-guiding channel (5) respectively,
Temperature control unit (7) output end is laid towards the material conveying passage (3).
3. the sintering kiln according to claim 2 for ceramics, which is characterized in that
The partition board (701) for high temperature gas flow to be isolated is equipped between the adjacent temperature control unit (7),
There are the passage gaps being circulated through for high temperature gas flow between the partition board (701) and the furnace body (1) inner chamber bottom surface
(702),
It is equipped between the material conveying passage (3) and the temperature control unit (7) and leads to for providing to be conveyed by the material
Road (3) conveys the power plant (703) of power to the air-flow in the temperature control unit (7) direction.
4. the sintering kiln according to claim 3 for ceramics, which is characterized in that
Multiple passage gaps (702) are arranged in order along material conveying direction,
The gap width of the passage gaps (702) is identical or gap width is different.
5. the sintering kiln according to claim 2 for ceramics, which is characterized in that
The temperature control unit (7) uses the individual cavities body being isolated from each other,
The material conveying passage (3) is respectively communicated to each temperature control unit (7) by extension tube attached (704),
Between the material conveying passage (3) and the extension tube attached (704) and the extension tube attached (704) is controlled with the temperature
It is equipped between unit (7) and is used for high temperature gas flow flow and temperature controlled control device (705).
6. the sintering kiln according to claim 5 for ceramics, which is characterized in that
It is covered with the insulating layer kept the temperature for tube cavity on the extension tube attached (704).
7. the sintering kiln according to any one of claim 1 to 6 for ceramics, which is characterized in that
The connectivity structure (6) is using the embedded pipe being embedded in the furnace body (1) wall body；And/or
The connectivity structure (6) is covered on the outer tube (601) and is used for using the outer tube (601) of the furnace body (1) outside is in
The insulating layer of tube cavity heat preservation；And/or
The connectivity structure (6) uses to be opened between the material conveying passage (3) and the thermal current flow-guiding channel (5) and use
In the stomata (602) of airflow.
8. the sintering kiln according to claim 7 for ceramics, which is characterized in that
The output end of the connectivity structure (6) is opened up from the discharge port (4) to the feed inlet (2) direction, and/or
The output end of the connectivity structure (6) is opened from the material conveying passage (3) to thermal current flow-guiding channel (5) direction
If.
9. the sintering kiln according to any one of claim 1 to 6 for ceramics, which is characterized in that
The heat source (8) for being heated to the furnace body (1) inner cavity is laid in the high-temperature region (302).
10. the sintering kiln according to claim 9 for ceramics, which is characterized in that
The heat source (8) is heated using combustion of natural gas or Si-Mo rod electrical heating.
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| CN201810564008.9A CN108662901B (en) | 2018-06-04 | 2018-06-04 | Sintering kiln for ceramics |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810564008.9A CN108662901B (en) | 2018-06-04 | 2018-06-04 | Sintering kiln for ceramics |
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| CN108662901B CN108662901B (en) | 2023-08-04 |
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| CN109442987A (en) * | 2018-12-13 | 2019-03-08 | 山西北斗星新材料有限公司 | A kind of kiln car formula kiln |
| CN115406229A (en) * | 2022-08-16 | 2022-11-29 | 贵州新园特种陶瓷科技有限公司 | High-temperature de-waxing kiln for ceramics |
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|---|---|
| CN108662901B (en) | 2023-08-04 |
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Effective date of registration: 20231219 Address after: 556011 Building 6, Standard Workshop, High tech Industrial Park, Kaili Economic Development Zone, Qiandongnan Miao and Dong Autonomous Prefecture, Guizhou Province Patentee after: Guizhou Xinyuan Special Ceramics Technology Co.,Ltd. Address before: 417600 Xianghong Industrial Park, Xinhua County Economic Development Zone, Loudi City, Hunan Province Patentee before: XINHUA XINYUAN ELECTRONIC CERAMICS Co.,Ltd. |