CN103108421A - Electrical heating structure - Google Patents
Electrical heating structure Download PDFInfo
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- CN103108421A CN103108421A CN2012105161797A CN201210516179A CN103108421A CN 103108421 A CN103108421 A CN 103108421A CN 2012105161797 A CN2012105161797 A CN 2012105161797A CN 201210516179 A CN201210516179 A CN 201210516179A CN 103108421 A CN103108421 A CN 103108421A
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Abstract
The invention discloses an electrical heating structure which is characterized by comprising an upper heating connecting ring (1) and a lower heating connecting ring(2), and a heating body (3) is arranged between the upper heating connecting ring (1) and the lower heating connecting ring(2). The heating connecting ring (1) is connected with an upper graphite electrode (4), and the lower heating connecting ring (2) is connected with a lower graphite electrode (5). The electrical heating body is made of titanium, nickel, tungsten, cobalt, hafnium or silicon and other materials. Composite materials of graphite and carbide of various materials formed at a high temperature such as the mixture of carbon and titanium carbide can effectively prevent the fluorine from corrosion and improve the resistivity of the heating body. The whole heating body is formed by sintering, the structure is simple and the installation is convenient. The fixing connection can be carried out without accessories and the whole resistance is consistent. Compared with the prior art, the electrical heating structure has the advantages of being simple in structure, consistent in the whole resistance, fluoride-resistant, high in heating temperature, large in output.
Description
Technical field
The present invention relates to a kind of electric heating device, particularly a kind of electric heating device for calciner.
Background technology
Calcining is an important procedure during carbon product is produced, and its burning quality has a significant impact the quality of goods and the technical indicator of follow-up each technique, is the important guarantee of producing qualified carbon goods.Calcination process can make coke that complicated physicochemical change occurs, and discharges volatile matter, moisture, raising density and conductivity, and coke structure shrinks simultaneously, and microstructure obtains regular, and fault of construction is made up, and generates the high-quality calcined coke.At present ripe carbon calcining system such as calcining petroleum coke system all can reach the shorter requirement of calcining cycle, due to cooling, and carbon element are reclaimed the reasons such as the corrosion resistance of fluoride in industry is poor, and its adaptability and productive rate are lower.Take the petroleum coke calcined by rotary kiln stove of extensive employing as example, refractory material adopts Si
3N
4Or SiC, heat is sent into the rotary kiln body carbon dust is calcined, and its cooling rate is extremely restricted.In electrolytic aluminium carbon waste material, with a small amount of fluoride salt, form the fluoride salt steam when high-temperature calcination, and the refractory material reaction becomes SiF simultaneously
4, cause the kiln hood operational environment to worsen, the impact very large on final carbon product quality.
The calcined petroleum coke production technology that the burnt production technology of calcined by rotary kiln is domestic extensive employing at present, according to incompletely statistics, 43, China burnt factory of existing calcined by rotary kiln, annual production is 4,500,000 t approximately, account for 56% of gross domestic product.But in process of production, the ubiquity energy-output ratio is large, scaling loss is large and the problem such as unstable product quality.Take Guizhou Aluminum Factory as example, the calcination system that uses is that a specification is the calcination rotary kiln of Φ 2.2m * 45m, and designed productive capacity is 6t/h, mainly for the calcine technology of petroleum coke.The rotary kiln end temperature is about 1200 ℃ of left and right, and the kiln tail is not cooling fast, and the high temperature carbon dust after calcining easily easily causes scaling loss at combustion synthesis in air, and what refractory lining adopted simultaneously is Si compound refractory material, effectively anti-fluorine corrosion.
External comparatively ripe carbon calciner technology, as U.S. tall and erect (METSO) carbon-calcining rotary kiln stove, be made of entire body part, bracing or strutting arrangement, transmission device, tertiary air device, kiln head cover, kiln hood, kiln head and tail sealing, gear wheel etc., refractory material is arranged on cylindrical shell and kiln head and tail cover inwall.Burn by after-burner, the high-temperature gas that produces is sent into the kiln body from kiln hood, but high-temperature gas stream directly contacts with solid flow not with air insulated, realizes calcining in fire-resistant liner plate kiln body, realized that simultaneously the temperature from kiln hood to the kiln tail realizes graded, realized like this high temperature limit, but it still can not accomplish anti-fluorine corrosion, can not realize cooling fast simultaneously, realize that high yield must design very huge calcination system, its productivity ratio is lower.
Simultaneously, domestic other carbon calciner technology, for isolated air, the quirk mode that generally adopts separates Jiao and quirk employing refractory material when carbon calcining, and gaseous flow does not directly contact with solid flow, has limited greatly its calcining heat.
Along with industrial expansion, from discarded object, carbon element is carried out separating-purifying, and be sintered into Jiao, realize the discarded object recycling.For the carbon calcining process optimization, the production cycle shortens, and reduces every production consumption indicators simultaneously, try hard to be fully calcined volatile matter, reduce simultaneously fume emission, reduce the discharge capacity of live load and the minimizing tar of environmental protection equipment, realize that energy-saving and emission-reduction are necessary.
applicant of the present invention and inventor have applied for respectively separation and purification method of electrolytic aluminum scraps in 2010, the patent No. 201010168303.6 and magnetic selection method for electrolytic aluminum waste material, the patent No. 201010168403.9, preliminary test and exploration have been carried out in recycling to electrolytic aluminum scraps, and on carbon materials (carbon dust) basis of gained, studied and applied for following patent in 2011: the method for processing coke by electrolytic aluminium waste and isolated plant, application number 201110397026.0, the raw material of a kind of aluminium metallurgy carbon materials preparation method and device and employing, the patents such as application number 201110419835.7, further processing to carbon materials is studied.Applicant's discovery, in disclosed technology, the carbon materials of gained prepares carbon product, needs first to use pitch, tar kneading, die mould, and technique is comparatively complicated, and device therefor is many, and heating time is long, and energy consumption is large.
Summary of the invention
The object of the invention is to, a kind of electric heating device is provided.Can realize high-temperature calcination, simple in structure, be easy to manufacture, cost is low, and is not fragile.
Technical scheme of the present invention.Electric heating device comprises heating connecting ring and issue the hot link ring, and at upper heating connecting ring with issue between the hot link ring and be provided with heater, described upper heating connecting ring connects upper graphite electrode, and the described hot link ring that issues connects lower graphite electrode.
Above-mentioned electric heating device, issues the hot link ring and heater is formed by simple substance or the oxidesintering that 70-100 part carbon adds 0-30 part titanium, nickel, tungsten, cobalt, hafnium or silicon at described upper heating connecting ring.
Above-mentioned electric heating device, issues the hot link ring and heater is formed by simple substance or the oxidesintering that 80-90 part carbon adds 10-20 part titanium, nickel, tungsten, cobalt, hafnium or silicon at described upper heating connecting ring.
Above-mentioned electric heating device, upper heating connecting ring and issue the hot link ring and be provided with notch after heater is arranged in notch, is filled the mixture of graphite and pitch in notch, then with upper heating connecting ring, issue the hot link ring and heater is sintered into one.
Above-mentioned electric heating device, upper heating connecting ring and issue the heater that is provided with between the hot link ring more than 1 layer is connecting by connector between the 2 layers of heater in up and down.
Above-mentioned electric heating device, the described hot link ring below of issuing is provided with 2 lower graphite electrodes that support use.
Above-mentioned electric heating device, the two ends of described upper graphite electrode and lower graphite electrode are the conducting end of area increased.
Electric heating body of the present invention adopts carbon to add the materials such as titanium, nickel, tungsten, cobalt, hafnium or silicon and makes, at high temperature form graphite and each material carbide composite material, as the mixture of carbon and titanium carbide, can effective anti-fluorine, sulfur corrosion, improve the resistivity of heater.With existing graphite heating body, resistance is higher.Self can reach the high temperature of 2500 ℃ electric heating body of the present invention, can use as the heating liner of calciner, and the material of calcining can be calcined under 2000 ℃ of left and right high temperature.Whole electric heating body sintering forms, and is simple in structure, easy for installation, do not have accessory to be fixed connection, and overall electrical resistance is consistent, the problem that because of the large easily high temperature of link position resistance, connection fittings is not burnt out.Simultaneously, the making of heater is through following several segment process, raw material mixing mold pressing, first sintering, the physics moulding, assembling is put into production in the production scene, high temperature heating in production process, and the material of heater is through double sintering, obtain the carbon corrosion-resistant, that fusing point is high, resistance is high and each material carbide composite material, make the raw material of electric heating body progressively complete the dynamic transition of contour structures, internal material.Electric heating body adopts sandwich construction, can increase volume and the calcining output of calciner.The present invention can not only carry out heating and calcining desulfurization defluorinate to the carbon dust in electrolytic aluminum scraps, can also carry out high-temperature calcination to various carbon materialses such as high-sulfur, low-grade graphite inferior, coal and petroleum cokes, carry out the processing of desulfurization, devolatilization, improve the quality of carbon materials.Compare with prior art, that the present invention has is simple in structure, overall electrical resistance is consistent, anti-fluorine, sulfur corrosion, the advantage such as heating temp is high, output is large.
Description of drawings
Accompanying drawing 1 is structural representation of the present invention.
Embodiment
Embodiments of the invention.Electric heating device as shown in Figure 1, comprises heating connecting ring 1 and issues hot link ring 2, and at upper heating connecting ring 1 with issue heater 3 is installed between hot link ring 2, upper heating connecting ring 1 connects upper graphite electrode 4, issues hot link ring 2 and connects lower graphite electrodes 5.
Upper heating connecting ring 1, issue hot link ring 2 and heater 3 is formed by simple substance or the oxidesintering that 70-100 part carbon adds 0-30 part titanium, nickel, tungsten, cobalt, hafnium or silicon.By weight, upper heating connecting ring 1, issue hot link ring 2 and heater 3 is formed by simple substance or the oxidesintering that 70-100 part carbon adds 0-30 part titanium, nickel, tungsten, cobalt, hafnium or silicon.Calandria can be pure material with carbon element, is more preferably at material with carbon element to add titanium, nickel, tungsten, cobalt, hafnium or silicon, obtains the carbon corrosion-resistant, that fusing point is high, resistance is high and each material carbide composite material after high temperature.Electric heating body also can be formed by simple substance or the oxidesintering that 80-90 part carbon adds 10-20 part titanium, nickel, tungsten, cobalt, hafnium or silicon.
According to aforementioned proportion, carbon dust is become electrode paste with pitch, tar mixing manufacture, after again electrode paste being added the simple substance or oxide mixing of titanium, nickel, tungsten, cobalt, hafnium or silicon, die mould obtains heating connecting ring 1, issues hot link ring 2 and heater 3 respectively, produce notch 6 at upper heating connecting ring 1 on hot link ring 2 with issuing, respectively by 1000-1200 ℃ of sintering typing, with heater 3 be arranged on notch 6 interior after, at the mixture of the interior filling graphite of notch 6 and pitch, then with upper heating connecting ring 1, issue hot link ring 2 and heater 3 is sintered into one.
Upper heating connecting ring 1 and issue the heater 3 that can also arrange between hot link ring 2 more than 1 layer is connecting by connector 7 between the 2 layers of heater 3 in up and down.Heater 3 adopts sandwich construction, can increase the degree of depth of heating region, and connector 7 can improve the stability of heater 3.The material of connector 7 is identical with heater 3.
Described hot link ring 2 belows of issuing arrange 2 lower graphite electrode 5 crossbeams that support use, support whole heating arrangement.
The two ends of described upper graphite electrode 4 and lower graphite electrode 5 are the conducting end of area increased, and the conducting end stube cable is to reduce the resistance of stube cable position.
During use, upper heating connecting ring 1 be connected hot link ring 2 and connect respectively up and down the graphite electrode 5 of conduction, the heating of can switching on, and should at oxygen-free environment, using under the environment as vacuum, protective gas, reducing gas.
Claims (7)
1. electric heating device, it is characterized in that: comprise heating connecting ring (1) and issue hot link ring (2), at upper heating connecting ring (1) with issue and be provided with heater (3) between hot link ring (2), graphite electrode (4) in described upper heating connecting ring (1) connection, the described hot link ring (2) that issues connects lower graphite electrode (5).
2. electric heating device according to claim 1 is characterized in that: described upper heating connecting ring (1), issue hot link ring (2) and heater (3) is formed by simple substance or the oxidesintering that 70-100 part carbon adds 0-30 part titanium, nickel, tungsten, cobalt, hafnium or silicon.
3. electric heating device according to claim 2 is characterized in that: described upper heating connecting ring (1), issue hot link ring (2) and heater (3) is formed by simple substance or the oxidesintering that 80-90 part carbon adds 10-20 part titanium, nickel, tungsten, cobalt, hafnium or silicon.
4. electric heating device according to claim 1, it is characterized in that: on generate heat connecting ring (1) and issue hot link ring (2) and be provided with notch (6), after heater (3) is arranged in notch (6), fill the mixture of graphite and pitch in notch (6), then with upper heating connecting ring (1), issue hot link ring (2) and heater (3) is sintered into one.
5. electric heating device according to claim 1 is characterized in that: on generate heat connecting ring (1) and issue the heater (3) that is provided with between hot link ring (2) more than 1 layer, connecting by connector (7) between the 2 layers of heater in up and down (3).
6. electric heating device according to claim 1 is characterized in that: described hot link ring (2) below of issuing is provided with the 2 lower graphite electrodes (5) that support use.
7. electric heating device according to claim 1, it is characterized in that: the two ends of described upper graphite electrode (4) and lower graphite electrode (5) are the conducting end of area increased.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105161797A CN103108421A (en) | 2012-12-05 | 2012-12-05 | Electrical heating structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105161797A CN103108421A (en) | 2012-12-05 | 2012-12-05 | Electrical heating structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103108421A true CN103108421A (en) | 2013-05-15 |
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ID=48315910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105161797A Pending CN103108421A (en) | 2012-12-05 | 2012-12-05 | Electrical heating structure |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003109730A (en) * | 1999-06-09 | 2003-04-11 | Ibiden Co Ltd | Ceramic heater |
| CN202103870U (en) * | 2011-06-22 | 2012-01-04 | 西安电炉研究所有限公司 | Connecting structure for graphite rod heating body |
| CN102533215A (en) * | 2010-12-10 | 2012-07-04 | 比亚迪股份有限公司 | Electrode connector slurry and preparation method thereof |
| CN203027513U (en) * | 2012-12-05 | 2013-06-26 | 贵州铝城铝业原材料研究发展有限公司 | Electrical heating structure |
-
2012
- 2012-12-05 CN CN2012105161797A patent/CN103108421A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003109730A (en) * | 1999-06-09 | 2003-04-11 | Ibiden Co Ltd | Ceramic heater |
| CN102533215A (en) * | 2010-12-10 | 2012-07-04 | 比亚迪股份有限公司 | Electrode connector slurry and preparation method thereof |
| CN202103870U (en) * | 2011-06-22 | 2012-01-04 | 西安电炉研究所有限公司 | Connecting structure for graphite rod heating body |
| CN203027513U (en) * | 2012-12-05 | 2013-06-26 | 贵州铝城铝业原材料研究发展有限公司 | Electrical heating structure |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| ASS | Succession or assignment of patent right |
Owner name: ZOU JIANMING Free format text: FORMER OWNER: GUIZHOU LVCHENG ALUMINUM MATERIAL RESEARCH AND DEVELOPMENT CO., LTD. Effective date: 20130711 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20130711 Address after: 1, unit 3, building 99, 550014 Yucai Road, Baiyun District, Guizhou, Guiyang, 601 Applicant after: Zou Jianming Address before: 550014, Guizhou Guiyang Baiyun District aluminum and aluminum processing base, East Ring Road Aluminum City Aluminum Applicant before: Guizhou Lvcheng Raw Material of Aluminum Research and Development Co., Ltd. |
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| ASS | Succession or assignment of patent right |
Owner name: WANG GANG Free format text: FORMER OWNER: ZOU JIANMING Effective date: 20130808 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 550014 GUIYANG, GUIZHOU PROVINCE TO: 102206 CHANGPING, BEIJING |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20130808 Address after: 102206, Beijing, Huilongguan, Changping District, Yue long, four, 3-1-4-501 Applicant after: Wang Gang Address before: 1, unit 3, building 99, 550014 Yucai Road, Baiyun District, Guizhou, Guiyang, 601 Applicant before: Zou Jianming |
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Owner name: GUIZHOU LVCHENG ALUMINUM MATERIAL RESEARCH AND DEV Free format text: FORMER OWNER: WANG GANG Effective date: 20130927 |
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Free format text: CORRECT: ADDRESS; FROM: 102206 CHANGPING, BEIJING TO: 550014 GUIYANG, GUIZHOU PROVINCE |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20130927 Address after: 550014, Guizhou Guiyang Baiyun District aluminum and aluminum processing base, East Ring Road Aluminum City Aluminum Applicant after: Guizhou Lvcheng Raw Material of Aluminum Research and Development Co., Ltd. Address before: 102206, Beijing, Huilongguan, Changping District, Yue long, four, 3-1-4-501 Applicant before: Wang Gang |
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Owner name: ZOU JIANMING Free format text: FORMER OWNER: GUIZHOU LVCHENG ALUMINUM MATERIAL RESEARCH AND DEVELOPMENT CO., LTD. Effective date: 20131119 Owner name: DU YANHUA Effective date: 20131119 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20131119 Address after: 1, unit 3, building 99, 550014 Yucai Road, Baiyun District, Guizhou, Guiyang, 601 Applicant after: Zou Jianming Applicant after: Du Yanhua Address before: 550014, Guizhou Guiyang Baiyun District aluminum and aluminum processing base, East Ring Road Aluminum City Aluminum Applicant before: Guizhou Lvcheng Raw Material of Aluminum Research and Development Co., Ltd. |
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Effective date of registration: 20151012 Address after: 550004, hawthorn alley, Yunyan District, Guizhou, Guiyang 40 Applicant after: Zhou Junhe Applicant after: Du Yanhua Address before: 1, unit 3, building 99, 550014 Yucai Road, Baiyun District, Guizhou, Guiyang, 601 Applicant before: Zou Jianming Applicant before: Du Yanhua |
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Effective date of abandoning: 20171208 |