CN201942521U - Furnace body structure of tungsten powder carbonization furnace - Google Patents
Furnace body structure of tungsten powder carbonization furnace Download PDFInfo
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- CN201942521U CN201942521U CN2010206689829U CN201020668982U CN201942521U CN 201942521 U CN201942521 U CN 201942521U CN 2010206689829 U CN2010206689829 U CN 2010206689829U CN 201020668982 U CN201020668982 U CN 201020668982U CN 201942521 U CN201942521 U CN 201942521U
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Abstract
The utility model discloses a furnace body structure of a tungsten powder carbonization furnace. The furnace body structure comprises a furnace body housing and is characterized in that a main body of the furnace body is composed of a corundum furnace tube or a magnesium oxide furnace tube; the periphery of the furnace tube is provided with a thermal insulating layer composed of a magnesium oxide refractory brick; and the periphery of the thermal insulating layer is distributed with a plurality of microwave magnetrons. The beneficial effects of the furnace body structure are that: the traditional method that the graphite carbon tube is heated through the electricity is replaced by the microwave heating method; the periphery of the furnace tube is provided with certain magnetrons used for generating microwaves; under the microwave effect, the materials in the furnace tube are heated uniformly; therefore, the defect that the materials in the graphite carbon tube are not heated uniformly is overcome.
Description
Technical field
The utility model relates to a kind of furnace binding of tungsten powder carbide furnace, especially carbide furnace.
Background technology
Wolfram varbide is the important source material of producing Wimet, generally is at high temperature the tungsten powder carbonization to be made with carbon black.The carbonization of tungsten powder is generally carried out in tube furnace, and carbonization temperature is generally 1300 ℃-1600 ℃, and carbonization temperature directly affects the granularity of carbonizing degree, wolfram varbide carbon content and wolfram varbide etc.Therefore, the acquisition mode of high temperature heat source is the key problem in technology that influences the use properties of carbide furnace, and is then most important to the work-ing life of body of heater as the selection of the high-temperature refractory of burner hearth.
The tungsten powder carbonizing apparatus that is generally adopted at present is the graphite carbon pipe furnace, its structure mainly comprises as shown in Figure 1: carbon tube 1, carbon black 2, graphite cannula 3, conduction copper sheathing 4, radiation pyrometer 5, push away boat device 6, compressed air inlet 7, cooling water inlet 8, cooling water outlet 9 etc.In the graphite carbon pipe furnace, carbon tube 1 is a heating element, is again burner hearth.Usually be the transformer-supplied of 10-20V by input voltage 220V, output voltage, power is about 50kW, and the stove top temperature can reach 2500 ℃.When carrying out the carbonization operation, elder generation is abundant mixing in mixer with tungsten powder and carbon black, is loaded on then to push in the graphite boat in the carbon tube 1, after carbonization under the specified temperature fully graphite boat is released.The advantage of this equipment is simple in structure, quick heating, working temperature height.But the shortcoming easy oxidation that is graphite boiler tube, the life-span is short, often needs repairing; It is poor that the interior material of stove is heated evenly degree, causes carbonizing degree inhomogeneous.Consider body of heater intensity simultaneously, the diameter of carbon tube 1 can not be done too much, therefore is unfavorable for that equipment further maximizes.
In recent years, the tungsten powder carbonization technique is constantly developed, and some CEMENTED CARBIDE PRODUCTION producers have begun to adopt more advanced medium-frequency induction furnace to carry out the production of wolfram varbide.Medium-frequency induction furnace is made up of crucible (being burner hearth), inductor block, cooling system, thermofin etc.Its concrete structure mainly comprises as shown in Figure 2: charging covers 11, water-cooled induction coil 12, furnace shell 13, refractory materials 14, refractory tube 15, graphite heater 16, bearing 17, cooling water cavity 18 etc.Its principle of work is, according to electromagnetic induction principle, when feeding exchange current in the coil, produces alternating magnetic field, makes to produce eddy current in the conductor (plumbago crucible) and generate heat, thereby adds thermal material.Its frequency is generally 4000Hz, and furnace temperature can reach 2800 ℃, and burner hearth can be laid three large-scale graphite boats that are of a size of Φ 750mm * 600mm, and every stove charge amount can reach more than the 200kg.The advantage of this equipment is that material is heated evenly, the stove quick heating, and cooling is fast, does not need frequent maintenance, good operation conditions.But it is big that its shortcoming is a power consumption, and can only discontinuous operation.
The utility model content
In order to overcome above-mentioned drawback, technical problem to be solved in the utility model is, a kind of furnace binding of tungsten powder carbide furnace is provided, and has that material homogeneous heating, work energy consumption are low, the characteristics of long service life.In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is, a kind of furnace binding of tungsten powder carbide furnace, comprise the body of heater shell, it is characterized in that, the main body of described body of heater is made of corundum boiler tube or magnesium oxide boiler tube, and the thermal insulation layer that magnesium oxide refractory brick constitutes is set around the boiler tube, the peripheral some microwave magnetrons that distribute of thermal insulation layer.
Traditional heating mode is to make heat pass to material inside from the outside according to conduction, convection current and radiating principle, unavoidably low in the material has thermograde, so that material inside is heated is inhomogeneous, causes material phenomenons such as local superheating to occur.And microwave heating is in the traditional heating mode difference, microwave is that a kind of vibrational frequency can be up to 24.5 hundred million times frequency electromagnetic waves, when microwave action is on the object that can absorb microwave, the dipole molecule of interior of articles can be done the high frequency to-and-fro movement under the effect of microwave field, produce internal friction heat and make and be heated the material temperature and raise, and do not need any heat transfer process, just can make the not intensification simultaneously of heating simultaneously of material inside and outside, rate of heating is fast and even, only needs the part of the energy consumption of traditional heating mode.Then can not generate heat for the material that can not absorb microwave because of the effect of microwave.Therefore microwave heating has following characteristics: homogeneous heating and speed are fast, only can realize that selectivity to suction ripple material heats, adds that thermal control is timely, energy consumption is few.、
The beneficial effects of the utility model are, adopt microwave heating to replace the traditional way of graphite carbon pipe energising heating, promptly around boiler tube a certain amount of magnetron that is used to produce microwave are installed, and with the material of microwave action in boiler tube, make it even heating.Thereby overcome in the graphite carbon pipe furnace material uneven shortcoming of being heated.Simultaneously, owing to do not need boiler tube simultaneously as heating element, so boiler tube also needn't be selected easily oxidized graphite carbon pipe for use again, selecting for use among the present invention can high temperature resistant resistance to oxidation and to the corundum boiler tube or the magnesium oxide boiler tube of microwave absorption capacity difference, and the thermal insulation layer of body of heater also adopts the magnesium oxide refractory brick of wave-sucking performance difference, thereby make the material that microwave farthest acts on needs heating, can guarantee maximum heating efficiency like this, the work-ing life that can improve boiler tube again.After adopting microwave heating, than the type of heating of traditional graphite boiler tube energising back heating, its energy consumption can reduce more than 50%, and the wolfram varbide quality is more secure.Owing to continued to use the body of heater form and the operating method of graphite carbon pipe furnace, thereby still can carry out successive carbonization operation as operation graphite carbon pipe furnace.
The designed microwave heating tungsten powder carbide furnace of the utility model has been continued to use the operating method that pushes away boat continuously of graphite carbon pipe furnace, again by introducing the being heated evenly property that microwave heating has improved material, resistance to oxidation and the high corundum boiler tube of physical strength have more been used instead, prolonged the work-ing life of boiler tube, reduce the frequency of maintenance of equipment, reduced the energy consumption of heating.
Below in conjunction with the drawings and specific embodiments the utility model is described further.
Description of drawings
Fig. 1 is existing graphite carbon pipe furnace structural representation;
Fig. 2 is existing Medium frequency induction carbide furnace structural representation;
Fig. 3 is the furnace binding synoptic diagram of the utility model microwave heating carbonization stove.
Embodiment
Referring to Fig. 3, reflect a kind of concrete structure of the present utility model, the furnace binding of described tungsten powder carbide furnace, comprise body of heater shell 21, the main body of described body of heater is made of corundum boiler tube 24, the thermal insulation layer 23 that magnesium oxide refractory brick constitutes is set, the some microwave magnetrons 22 of thermal insulation layer 23 peripheral uniform distribution around the corundum boiler tube 24.
The microwave heating carbonization furnace body that utilizes the utility model to provide is as follows to the detailed process that tungsten powder carries out carbonization: the abundant mixing in mixer with tungsten powder and carbon black, it is loaded in several graphite boats or the corundum boat then, and boat is pushed boiler tube.Open the microwave heating power supply, the material in the boiler tube heated, treat that furnace temperature reaches predetermined temperature after, begin to promote boat, to control suitable heating and carbonization time by certain speed.After the wolfram varbide carbonization fully, boat is released from the other end of boiler tube, gets final product discharging after cooling.
Claims (2)
1. the furnace binding of a tungsten powder carbide furnace comprises the body of heater shell, it is characterized in that, the main body of described body of heater is made of corundum boiler tube or magnesium oxide boiler tube, and the thermal insulation layer that magnesium oxide refractory brick constitutes is set around the boiler tube, the peripheral some microwave magnetrons that distribute of thermal insulation layer.
2. the furnace binding of a kind of tungsten powder carbide furnace as claimed in claim 1 is characterized in that, described microwave magnetron is at the peripheral uniform distribution of described thermal insulation layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206689829U CN201942521U (en) | 2010-12-20 | 2010-12-20 | Furnace body structure of tungsten powder carbonization furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206689829U CN201942521U (en) | 2010-12-20 | 2010-12-20 | Furnace body structure of tungsten powder carbonization furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201942521U true CN201942521U (en) | 2011-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206689829U Expired - Fee Related CN201942521U (en) | 2010-12-20 | 2010-12-20 | Furnace body structure of tungsten powder carbonization furnace |
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| CN (1) | CN201942521U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102758271A (en) * | 2012-07-30 | 2012-10-31 | 广州赛奥碳纤维技术有限公司 | High-temperature carbide furnace capable of producing carbon fibers in large scale |
| TWI667339B (en) * | 2018-09-06 | 2019-08-01 | 永虹先進材料股份有限公司 | High-temperature carbonization furnace |
-
2010
- 2010-12-20 CN CN2010206689829U patent/CN201942521U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102758271A (en) * | 2012-07-30 | 2012-10-31 | 广州赛奥碳纤维技术有限公司 | High-temperature carbide furnace capable of producing carbon fibers in large scale |
| TWI667339B (en) * | 2018-09-06 | 2019-08-01 | 永虹先進材料股份有限公司 | High-temperature carbonization furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110824 Termination date: 20161220 |
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| CF01 | Termination of patent right due to non-payment of annual fee |