CN103896255A - Vertical-type continuous graphitization furnace - Google Patents

Vertical-type continuous graphitization furnace Download PDF

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Publication number
CN103896255A
CN103896255A CN201210573758.5A CN201210573758A CN103896255A CN 103896255 A CN103896255 A CN 103896255A CN 201210573758 A CN201210573758 A CN 201210573758A CN 103896255 A CN103896255 A CN 103896255A
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Prior art keywords
furnace
tunnel
funnel
batch meter
air duct
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CN201210573758.5A
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CN103896255B (en
Inventor
谢志群
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Guiyang Aluminum Magnesium Design and Research Institute Co Ltd
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Guiyang Aluminum Magnesium Design and Research Institute Co Ltd
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Abstract

The invention discloses a vertical-type continuous graphitization furnace. A feeding tunnel (3) is arranged at the top of the furnace, and a storage bin (2) is arranged on the feeding tunnel (3); the storage bin (2) has a three-segment structure and specifically comprises a middle bin (11) and two side bins (10); the feeding tunnel (3) has a double-layer round structure and specifically has a combination structure of a tunnel inner cylinder and a tunnel outer cylinder; an annular gas exhaust channel (13) is formed at the bottom between the tunnel inner cylinder and the tunnel outer cylinder, and is connected with a gas exhaust pipe (1); an upper electrode (4) is arranged at the furnace top and at the center position of the feeding tunnel (3); a lower electrode (7) is arranged at the middle position at the lower segment of the furnace body; a coarse-particle material (5) is placed at the middle position of the furnace body, and a fine-particle material (6) is placed between a refractory-material inner liner (8) of the furnace and the coarse-particle material (5); a material discharging mechanism (9) is arranged at the bottom of the furnace body; and the annular gas exhaust channel is a triangular cavity, and the bottom employs a refractory castable (12).

Description

Vertical continuous graphitizing furnace
Technical field
The present invention relates to a kind of vertical continuous graphitizing furnace.
Background technology
At present, domestic carbon raw materials is carried out to high-temperature heat treatment, shaft furnace that can continuous pulp discharge mainly contains two kinds, and a kind of is to utilize high alumina brick to make the general temperature electric calciner of insulating lining, 1500 ~ 2000 ℃ of thermal treatment temps; Another kind is to utilize carbon lining to make the high-temperature electric calcining furnace being incubated, 2000 ~ 2500 ℃ of thermal treatment temps.These two kinds of type of furnaces all cannot meet the requirement of the required more than 2800 ℃ high-temperature heat treatment of the complete greying of carbon raw materials, and because carbon lining belongs to electro-conductive material, after adopting, a kind of type of furnace not only can reduce current efficiency, and work-ing life is also shorter.And horizontal graphitizing furnace belongs to intermittent operation, the cold and hot continuous variation of stove, and opened upper end heat radiation is large, and energy consumption is very high, and opened upper end also easily makes carbon raw materials oxidation cause a large amount of losses, takes on stove labor condition severe.
Summary of the invention
The technical problem to be solved in the present invention is, a kind of vertical continuous graphitizing furnace is provided, to overcome the deficiencies such as the requirement that cannot meet the required more than 2800 ℃ high-temperature heat treatment of the complete greying of carbon raw materials that prior art exists.
The present invention is by the following technical solutions: at furnace roof, batch meter is set, storage bin is set on batch meter, wherein storage bin is three stage structure, i.e. an intermediate bin and two side storehouses; Batch meter is double-layer circular structure, i.e. funnel inner cylinder and funnel out cylinder unitized construction, and between the inside and outside cylinder of funnel, annular waste air duct is formed on bottom, position, and annular waste air duct is connected with vapor pipe; Upper electrode is arranged on mid-way in furnace roof and batch meter, and lower electrode is arranged on body of heater hypomere mid-way, places coarse particles material in the middle of body of heater, between the refractory lining of body of heater and coarse particles material, places fine granular materials; At bottom of furnace body, discharge mechanism is set.
Annular waste air duct is triangular cavity, adopts refractory castable in triangular cavity bottom.
Intermediate bin is connected with funnel inner cylinder, and two side storehouses are connected with funnel out cylinder respectively.
The present invention, by a special batch meter is set at furnace roof, makes carbon raw materials add respectively graphitizing furnace according to different granularities, and coarse particles material is placed at stove center, and fine granular materials is placed in its outside.In heat treatment process, electric current, by coarse particles material, utilizes the resistance characteristic heating of coarse particles carbon raw materials self to reach the required temperature of thermal treatment, can realize greying; Fine granular materials is mainly used in heat-insulation and heat-preservation, and furnace wall temperature is maintained below 1500 ℃.After carbon material after Overheating Treatment is cooling, sieve processing, coarse particles material is as greying product, and fine granular materials both can be used as electricity calcining material and uses, and also can use as heat-insulation and heat-preservation material back into stove.
Furnace roof batch meter is designed to double-layer circular structure; funnel inner cylinder is placed coarse particles material; funnel out cylinder is placed fine granular materials; batch meter is fixed on stove top; bottom, the inside and outside cylinder of funnel mid-way arranges triangular cavity with carbon raw materials common looping exhaust-duct and is connected with vapor pipe, and triangular cavity bottom adopts refractory castable protection.The intermediate bin of furnace roof storage bin is placed coarse particles raw material, and fine granular materials is placed in storehouse, both sides.Vertical graphitizing furnace is full-closed structure, and discharge mechanism is arranged in stove bottom.Raw material is from top to bottom through preheating (low-temperature zone), heating (high temperature section), discharge by discharge mechanism from bottom after cooling.Along with the running of discharge mechanism, when product is discharged graphitizing furnace, the carbon raw materials in furnace roof batch meter constantly enters in graphitizing furnace.
The present invention be directed to carbon raw materials greying and need to reach more than 2800 ℃, and refractory materials cannot bear technical measures and structure thereof that the present situation of this high temperature is taked.Adopt vertical continuous graphitizing furnace of the present invention, both can production greying product, can produce again electric calcination product; Because furnace wall temperature is lower, can adopt the refractory materials that price is more cheap to make liner, significantly reduce stove investment, extend furnace campaign; In stove, thermal field is stable.Compared with horizontal graphitizing furnace, energy consumption can reduce by more than 50; Fully enclosed automatic operation, can improve working conditions greatly, reduces carbon material oxidation loss.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention;
Fig. 2 is A-A view in Fig. 1.
In figure, 1---vapor pipe, 2---storing, 3---batch meter, 4---upper electrode, 5---coarse particles material, 6---fine granular materials, 7---lower electrode, 8---refractory lining, 9---discharge mechanism, 10---side storehouse, 11---intermediate bin, 12---refractory castable, 13---annular waste air duct.
Embodiment
Embodiments of the invention: at furnace roof, batch meter 3 is set, storage bin 2 is set on batch meter 3, wherein storage bin 2 is three stage structure, i.e. an intermediate bin 11 and two side storehouses 10; Batch meter 3 is double-layer circular structure, i.e. funnel inner cylinder and funnel out cylinder unitized construction, and between the inside and outside cylinder of funnel, annular waste air duct 13 is formed on bottom, position, and annular waste air duct 13 is connected with vapor pipe 1; Upper electrode 4 is arranged on furnace roof and the interior mid-way of batch meter 3, and lower electrode 7 is arranged on body of heater hypomere mid-way, places coarse particles material 5 in the middle of body of heater, between the refractory lining 8 of body of heater and coarse particles material 5, places fine granular materials 6; At bottom of furnace body, discharge mechanism 9 is set.
Annular waste air duct 13 is triangular cavity, adopts refractory castable 12 in triangular cavity bottom.
Intermediate bin 11 is connected with funnel inner cylinder, and two side storehouses 10 are connected with funnel out cylinder respectively.
Inner cylinder is placed coarse particles material, and out cylinder is placed fine granular materials, and inner cylinder diameter can be adjusted, thereby adjusts the distributed areas of large or fine granule material in stove, realizes the adjustment of two kinds of product proportions; The bottom of the inside and outside cylinder spaced-apart locations of batch meter arranges triangular cavity and the common looping of carbon raw materials exhaust-duct, and triangular cavity bottom adopts refractory castable protection, avoids corrosion and high temperature deformation to damage.Vapor pipe is connected with annular waste air duct, guarantees that the gaseous impurities that in graphitizing process, carbon raw materials is overflowed discharges out of the furnace in time, and vapor pipe diameter can be adjusted according to the volatile matter and the moisture content that enter stove material.
Because fine granular materials temperature outside approaches 1500 ℃, fine granular materials can be used as electricity calcining material completely and uses.In carbon raw materials heat treatment process, sulphur and partial impurities mainly more than 1700 ℃ hot stage be vaporized, gaseous impurities collects by the annular waste air duct between furnace roof and batch meter, then discharges outside vertical continuous graphitizing furnace through vapor pipe.The product of different qualities is mixed together and discharges out of the furnace in cooling and outer row's process, can utilize sieve apparatus to carry out separating treatment, and coarse particles material is greying product, and fine granular materials uses also and can do the use of heat-insulation and heat-preservation material back into stove as electricity calcining material.

Claims (3)

1. a vertical continuous graphitizing furnace, is characterized in that: at furnace roof, batch meter (3) is set, storage bin (2) is set on batch meter (3), wherein storage bin (2) is three stage structure, i.e. an intermediate bin (11) and two side storehouses (10); Batch meter (3) is double-layer circular structure, i.e. funnel inner cylinder and funnel out cylinder unitized construction, and between the inside and outside cylinder of funnel, annular waste air duct (13) is formed on bottom, position, and annular waste air duct (13) is connected with vapor pipe (1); Upper electrode (4) is arranged on furnace roof and the interior mid-way of batch meter (3), lower electrode (7) is arranged on body of heater hypomere mid-way, in the middle of body of heater, place coarse particles material (5), between the refractory lining (8) of body of heater and coarse particles material (5), place fine granular materials (6); At bottom of furnace body, discharge mechanism (9) is set.
2. vertical continuous graphitizing furnace according to claim 1, is characterized in that: annular waste air duct (13) is triangular cavity, adopts refractory castable (12) in triangular cavity bottom.
3. vertical continuous graphitizing furnace according to claim 1, is characterized in that: intermediate bin (11) is connected with funnel inner cylinder, and two side storehouses (10) are connected with funnel out cylinder respectively.
CN201210573758.5A 2012-12-26 2012-12-26 Vertical continuous graphitizing furnace Active CN103896255B (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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CN103896255B CN103896255B (en) 2016-02-10

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105800591A (en) * 2014-12-30 2016-07-27 贵阳铝镁设计研究院有限公司 High temperature graphitized electrical calciner
CN105967180A (en) * 2016-07-18 2016-09-28 中国矿业大学 Novel graphitizing furnace
CN106829951A (en) * 2017-03-30 2017-06-13 顾齐航 Efficient sealed continuous graphitizing furnace
CN107572513A (en) * 2017-08-17 2018-01-12 葫芦岛市丰达新碳材料有限公司 A kind of electric heating oil production Jiao, graphite and carbon transformation all-in-one oven
CN109081336A (en) * 2018-10-24 2018-12-25 中铝国际工程股份有限公司 A kind of electricity forges high temperature graphitization furnace

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1487835A (en) * 1973-12-15 1977-10-05 Nippon Kokan Kk Method and apparatus for denitrifying coke
CN1252126A (en) * 1997-04-14 2000-05-03 埃尔凯姆公司 Method and calcining furnace for electric calcining of carbonaceous material
CN2759998Y (en) * 2004-11-15 2006-02-22 镇江焦化煤气集团有限公司 Vertical electric incinerator for continuous production of high-purity graphite carbon material
JP2007139343A (en) * 2005-11-21 2007-06-07 Chisaki:Kk Vertical kiln
CN202369397U (en) * 2011-12-14 2012-08-08 贵阳铝镁设计研究院有限公司 Electric calcining furnace for graphite carbon material

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1487835A (en) * 1973-12-15 1977-10-05 Nippon Kokan Kk Method and apparatus for denitrifying coke
CN1252126A (en) * 1997-04-14 2000-05-03 埃尔凯姆公司 Method and calcining furnace for electric calcining of carbonaceous material
CN2759998Y (en) * 2004-11-15 2006-02-22 镇江焦化煤气集团有限公司 Vertical electric incinerator for continuous production of high-purity graphite carbon material
JP2007139343A (en) * 2005-11-21 2007-06-07 Chisaki:Kk Vertical kiln
CN202369397U (en) * 2011-12-14 2012-08-08 贵阳铝镁设计研究院有限公司 Electric calcining furnace for graphite carbon material

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105800591A (en) * 2014-12-30 2016-07-27 贵阳铝镁设计研究院有限公司 High temperature graphitized electrical calciner
CN105967180A (en) * 2016-07-18 2016-09-28 中国矿业大学 Novel graphitizing furnace
CN106829951A (en) * 2017-03-30 2017-06-13 顾齐航 Efficient sealed continuous graphitizing furnace
CN107572513A (en) * 2017-08-17 2018-01-12 葫芦岛市丰达新碳材料有限公司 A kind of electric heating oil production Jiao, graphite and carbon transformation all-in-one oven
CN109081336A (en) * 2018-10-24 2018-12-25 中铝国际工程股份有限公司 A kind of electricity forges high temperature graphitization furnace

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