CN106829951B - Efficient sealed continuous graphitizing furnace - Google Patents
Efficient sealed continuous graphitizing furnace Download PDFInfo
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- CN106829951B CN106829951B CN201710200392.XA CN201710200392A CN106829951B CN 106829951 B CN106829951 B CN 106829951B CN 201710200392 A CN201710200392 A CN 201710200392A CN 106829951 B CN106829951 B CN 106829951B
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Abstract
The present invention relates to a kind of efficient sealed continuous graphitizing furnace, including furnace body, seal closure is arranged in the top of furnace body, and seal closure is equipped with feed hopper and fugitive constituent discharger；Graphite heating chamber is arranged in the inside of furnace body, graphite heating chamber is axially divided into preheating and baking area, at a slow speed heating zone and free heating zone from top to bottom, anode electrode is arranged in the center of graphite heating chamber, and the outer ring of anode electrode is cathode electrode, and graphite to be heated is placed between anode and cathode;The bottom end of graphite heating chamber is connected to by blow-off valve with the input end that cooling kiln is turned round in sealing, and the discharge end that cooling kiln is turned round in sealing connects meausring apparatus.Quality of the present invention is stablized, easily the technical indicators such as guarantee graphitizing quality, graphite purity, specific surface area, and low energy consumption, effectively discharges fugitive constituent, environment-friendly high-efficiency.
Description
Technical field
The present invention relates to a kind of graphitizing furnace more particularly to a kind of efficient sealed continuous graphitizing furnaces.
Background technique
High purity graphite is widely used in cell negative electrode material, the nuclear graphite of nuclear industry, military project high temperature resistant graphite and stealthy
Material, anti-corrosion material, conductive material, metallurgy industry, petrochemical industry etc. are a kind of highly important industrial materials.
Currently, both at home and abroad the capital equipment for producing graphitized powder have Acheson graphitization furnace, cascade graphitizing furnaces and
Heated by electrodes graphitizing furnace.Ai Qixun furnace and concatenation furnace are resistance heat transfer heating graphite, low (the power effective use of heating efficiency
Rate 30% or so), the interior graphite heated of furnace is uneven, and graphite heating temperature is lower, and graphite quality is not easy to guarantee, it is difficult to reach high
The purpose of pure graphite.Existing heated by electrodes graphitizing furnace is that electric arc directly heats graphite, which, which can realize, is rapidly heated that (power has
Effect utilization rate and Ai Qixun furnace and concatenate furnace promoted it is limited), but be difficult to realize each section of graphite of temperature rise, it is difficult to which guarantee purifies graphite
Quality, be also easy to produce useless charcoal phenomenon, the discharging of graphitizing furnace is easily mixed into unpurified graphite.Meanwhile the above graphitizing furnace is difficult to
Reach sealing operation, cause workshop and plant area's working environment poor, it is difficult to reach national requirements: being heated since heating method limits
Material damage is larger.
Summary of the invention
The present invention is directed to above-mentioned problems of the prior art, provides a kind of efficient sealed continuous graphitizing furnace, solves
It is low to be also easy to produce the difficult up to standard and power utilization of useless charcoal, quality for graphitizing furnace in the prior art, and is unable to reach sealing operation,
Cause shopwork environment poor and material damages larger problem.
Technical scheme is as follows:
Seal closure is arranged in efficient sealed continuous graphitizing furnace, including furnace body, the top of furnace body, and seal closure is equipped with feed hopper
And fugitive constituent discharger；Graphite heating chamber is arranged in the inside of furnace body, and graphite heating chamber is axially divided into preheating and baking from top to bottom
Anode electrode is arranged in area, at a slow speed heating zone and free heating zone, the center of graphite heating chamber, and the outer ring of anode electrode is cathode electricity
Pole, graphite to be heated are placed between anode and cathode;Cooling kiln is turned round by blow-off valve and sealing in the bottom end of graphite heating chamber
Input end connection, the discharge end that cooling kiln is turned round in sealing connect meausring apparatus.
Insulation insulating layer is equipped between the inboard wall of furnace body and cathode electrode.
The graphite heating chamber is equipped with contactless mobile temperature measuring equipment.
The structure of the contactless mobile temperature measuring equipment are as follows: graphite temperature tube one end is protruded into graphite to be heated, stone
The other end of black temperature tube is connected with guide pipe, guide pipe stretch out seal closure be connected with infrared temperature measuring head, infrared temperature measuring head and
The screw rod of worm and gear elevator is connected.
The anode electrode is solid electrode, and cathode electrode is coreless armature, and anode electrode and cathode electrode are and directly
Galvanic electricity source is connected, and DC power supply gives electrode power transmission.
The sectional area S2 of the heating zone at a slow speed is greater than the sectional area S1 in preheating and baking area and the section of free heating zone
Product S3.
The structure that cooling kiln is turned round in the sealing is that the charging and discharging end that cooling kiln is turned round in sealing is all made of graphite spherical surface
The outer wall arranged for interval cool water shower pipe of cooling kiln is turned round in bearing seal, sealing, and water blocking is arranged in the both ends of cool water shower pipe
Ring.
The meausring apparatus includes discharge valve, soft union, measuring chute, weight sensor and charging bag, the branch of measuring chute
The lower setting weight sensor of seat, the input end of measuring chute connect the outlet end that cooling kiln is turned round in sealing, measuring chute by soft union
Outlet end pass through soft union connection charging bag.
Advantages of the present invention effect is as follows:
1, it is directly heated using the electric arc that anode (solid electrode) and cathode (coreless armature) leads to direct current generation and is placed in yin
Graphite between positive electrode；Electrical power meets height required by graphite purification temperature up to peak use rate (reaching 90% or more)
Temperature, meets between electrode that each cross section temperature of charge to be heated is consistent, reaches best graphite purification quality, and qualified product is close
100%, no mixing phenomenon.
2, graphite heating chamber is axially divided into preheating and baking area, at a slow speed heating zone and free heating zone, subregion temperature from top to bottom
It rises and has prevented useless charcoal phenomenon guarantee purification graphite quality.
3, feeding-graphite purification-discharging-cooling-pack be sealing operation, guarantee shopwork environment and it is the smallest plus
Hot material damage；Reach most fast, most effectively cooling effect using cooling kiln is sealed, is damaged in cooling procedure without material.
4, the present invention overcomes existing graphitizing furnace disadvantage, provides a kind of stable (easily guarantee graphitizing quality, graphite of quality
The technical indicators such as purity, specific surface area), low energy consumption (utilization rate of electrical highest), the sealing height of effective discharge fugitive constituent environmental protection
Imitate continuous graphitizing furnace.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
In figure, 1, insulation insulating layer, 2, furnace body, 3, seal closure, 4, fugitive constituent discharger, 401, row's fugitive constituent
Pipe, 402, pneumatic operated valve, 5, mobile infrared temperature measurement apparatus, 501, infrared temperature measuring head, 502, worm and gear elevator, 503, graphite
Temperature tube, 504, guide pipe, 6, feed hopper, 7, sealing ring, 8, cathode electrode, 9, anode electrode, 10, graphite to be purified, 11, row
Expect valve, 12, the cooling kiln of sealing revolution, 1201, graphite spherical bearing, 1202, spray tube, 1203, drip ring；13, dress is weighed
It sets, 1301, discharge valve, 1302, soft union, 1303, measuring chute, 1304, weight sensor, 14, DC power supply.
Specific embodiment
Embodiment
As shown in Figure 1, efficient sealed continuous graphitizing furnace includes furnace body 2, seal closure 3, seal closure is arranged in the top of furnace body 2
3 are equipped with feed hopper 6 and fugitive constituent discharger 4, and sealing ring 7, fugitive constituent discharger 4 are equipped between feed hopper and seal closure
Including row's fugitive constituent pipe 401 and pneumatic operated valve 402, the setting of pneumatic operated valve 402 is in row's fugitive constituent pipe 401；Stone is arranged in the inside of furnace body 2
Black heating chamber, graphite heating chamber are axially divided into preheating and baking area (1), at a slow speed heating zone (2) and free heating zone from top to bottom
(3), the sectional area S2 of heating zone is greater than the sectional area S1 in preheating and baking area and the sectional area S3 of free heating zone at a slow speed.Graphite adds
Anode electrode 9 is arranged in the center of hot chamber, and the periphery of anode electrode 9 is cathode electrode 8, and the anode electrode is solid electrode,
Cathode electrode is coreless armature, and anode electrode and cathode electrode are connected with DC power supply 14；The bottom end of graphite heating chamber passes through
Blow-off valve 11 is connected to the input end that cooling kiln 12 is turned round in sealing, and the outlet end that cooling kiln 12 is turned round in sealing connects meausring apparatus
13。
Insulation insulating layer 1 is equipped between the inboard wall of furnace body and cathode electrode.
The graphite heating chamber is equipped with contactless mobile temperature measuring equipment, the structure of contactless mobile temperature measuring equipment
For 503 one end of graphite temperature tube is protruded into graphite to be heated, and the other end of graphite temperature tube is connected with guide pipe 504, guide pipe
504 stretching seal closures are connected with infrared temperature measuring head 501, and the infrared temperature measuring head connects worm and gear elevator 502.
The structure that cooling kiln is turned round in the sealing is that the charging and discharging end that cooling kiln is turned round in sealing is all made of graphite spherical surface
Bearing 1201 seals, and the outer wall arranged for interval cool water shower pipe 1202 of cooling kiln, the both ends of cool water shower pipe are turned round in sealing
Drip ring 1203 is set.
The meausring apparatus includes discharge valve 1301, soft union 1302, measuring chute 1303, weight sensor 1304 and dress
Weight sensor 1304 is arranged under the support of measuring chute 1303 for material bag.Sealing turn round cooling kiln discharge end and discharge valve 1301 into
Mouth is connected, and the outlet of discharge valve 1301 is connected with soft union 1302, and soft union 1302 is connected with the import of measuring chute 1303, measuring chute
1303 outlets are connected with 1301 import of discharge valve, and the outlet of discharge valve 1301 is connected with soft union 1302, the soft connection of union 1302 dress
Material bag.
The working principle of the invention and process are as follows:
Graphite raw material is sent into graphitizing furnace according to material position in furnace, directly heats graphite through graphitizing furnace electrode (logical direct current)
Maximum temperature can be to 3500 degree, and the pyrographite quantitative timing after graphitization is sent into the cooling kiln of sealed graphite, and pyrographite is cold
But to 70 degree of finished product graphite below.The discharge for the fugitive constituent that the stove heating graphite is formed is determined according to furnace internal mask pressure, works as pressure
(it is greater than atmospheric pressure) when power reaches design value P1, opens pneumatic operated valve discharge and cover interior fugitive constituent, when internal mask pressure reaches design value
(P2 is slightly larger than atmospheric pressure, and P1 is greater than P2) pneumatic operated valve is closed when P2.
After graphitization powder is cooling metering pack sealing operation purpose be in order to which graphite powder is not excessive, guarantee operator and
Workshop working environment well.Finished product graphite flows into measuring chute through cooling kiln discharging portion after graphitization, exports through weight sensor
Weight signal, when reaching design weighing weight, charging bag is fixed on discharge port, closes loading and unloading material valve, opens lower discharge valve.Finished product
Graphite unloads in charging bag, opens the charging sack being fixed on the discharge port of lower discharge valve, envelope after weighing zero.
Graphite heating divides into three areas between anode and cathode of the present invention: preheating and baking area, at a slow speed heating zone freely rise
Warm area.The heating rate of each heating zone is determined according to area's graphite current density is heated.The high heating rate of current density is fast,
The low heating rate of current density is slow.Subregion is to determine heating rate according to graphite requirement to be purified to divide.Heating rate
To be determined by current density, graphite heating area current density=I/S to be graphitized, I be electric current, the S that electrode is sent into be anode with
Annulus area between cathode.DC power supply is adjustable to the size of current of electrode, i.e., current density is adjustable.It is known from schematic diagram pre-
The current density of thermal bake-out area and free heating zone is greater than heating zone at a slow speed.Graphite to be purified rises at a slow speed from preheating and baking area-
The free heating zone of warm area-is that material gravity flow is completed after blow-off valve is opened.
In order to guarantee the temperature and temperature rise in three graphite heating areas, using moveable non-contact temperature measuring device, guarantee
The heating rate of heating zone at a slow speed.There are two types of modes for thermometric: contact temperature-measuring and contactless temperature-measuring.Thermometric mode of the invention
For contactless mobile infrared measurement of temperature (because contact temperature-measuring can not survey 2000 degree of temperatures above), the infrared temperature measuring head outsourcing.
Graphite powder after graphitizing furnace heating of the present invention is cooling using the cooling kiln of sealed graphite, and the input and output material of kiln, which seals, to be used
The sealing of spherical surface graphite bearing.It is cooling to use water cooling.Guarantee that drop temperature is not higher than 70 degree.Sealing is to prevent high fire stons after graphitization
The requisite measure of black scaling loss.Graphite temperature is not less than 1500 degree after graphitization due to entering cooling kiln, if feeder, discharging portion
There is no good sealing with cooling kiln rotating part, just easily enters air.The scaling loss of pyrographite is easily led to after into air.Stone
It is contacted in air without scaling loss after black temperature is lower than 200 degree.
The present invention is using sealing operation.Continuous feed, laser heating graphite powder, continuous discharge, continuous coo1ing graphite powder.Stone
Metering pack in sealing system in completing after ink powder is cooling.Guarantee that graphited graphite and electrode are not oxidized.Guarantee product
Quality, guarantee workshop in and the good environment of on-site.
Claims (3)
1. efficient sealed continuous graphitizing furnace, including furnace body, it is characterised in that seal closure is arranged in the top of furnace body, sets on seal closure
There are feed hopper and fugitive constituent discharger；Graphite heating chamber is arranged in the inside of furnace body, and graphite heating chamber is axially divided into from top to bottom
Anode electrode, the outer ring of anode electrode is arranged in the center of preheating and baking area, at a slow speed heating zone and free heating zone, graphite heating chamber
For cathode electrode, graphite to be heated is placed between anode and cathode;The bottom end of graphite heating chamber is turned round by blow-off valve and sealing
The input end connection of cooling kiln, the discharge end that cooling kiln is turned round in sealing connect meausring apparatus；
The graphite heating chamber is equipped with contactless mobile temperature measuring equipment；
The structure of the contactless mobile temperature measuring equipment are as follows: graphite temperature tube one end is protruded into graphite to be heated, and graphite is surveyed
The other end of warm pipe is connected with guide pipe, and guide pipe stretches out seal closure and is connected with infrared temperature measuring head, infrared temperature measuring head and worm gear
The screw rod of worm screw elevator is connected；
The anode electrode is solid electrode, and cathode electrode is coreless armature, and anode electrode and cathode electrode are and direct current
Source is connected, and DC power supply gives electrode power transmission；
The sectional area S2 of the heating zone at a slow speed is greater than the sectional area S1 in preheating and baking area and the sectional area S3 of free heating zone；
The structure that cooling kiln is turned round in the sealing is that the charging and discharging end that cooling kiln is turned round in sealing is all made of graphite spherical bearing
The outer wall arranged for interval cool water shower pipe of cooling kiln is turned round in sealing, sealing, and drip ring is arranged in the both ends of cool water shower pipe.
2. efficient sealed continuous graphitizing furnace according to claim 1, it is characterised in that the inboard wall of furnace body and cathode
Insulation insulating layer is equipped between electrode.
3. efficient sealed continuous graphitizing furnace according to claim 1, it is characterised in that the meausring apparatus includes unloading
Expect valve, soft union, measuring chute, weight sensor and charging bag, weight sensor be set under the support of measuring chute, measuring chute into
Mouth end connects the outlet end that cooling kiln is turned round in sealing by soft union, and the outlet end of measuring chute passes through soft union connection charging bag.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710200392.XA CN106829951B (en) | 2017-03-30 | 2017-03-30 | Efficient sealed continuous graphitizing furnace |
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| CN201710200392.XA CN106829951B (en) | 2017-03-30 | 2017-03-30 | Efficient sealed continuous graphitizing furnace |
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| CN106829951A CN106829951A (en) | 2017-06-13 |
| CN106829951B true CN106829951B (en) | 2019-01-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111362262B (en) * | 2020-05-07 | 2023-06-13 | 辽宁金田储能科技有限公司 | High-purity graphitization furnace |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2010049428A2 (en) * | 2008-10-27 | 2010-05-06 | Timcal S.A. | Process for the production and treatment of graphite powders |
| CN101817523B (en) * | 2009-03-19 | 2011-09-28 | 株洲弗拉德科技有限公司 | Graphite purification and graphitizable high temperature vertical continuous induction heating furnace |
| CN103896255B (en) * | 2012-12-26 | 2016-02-10 | 贵阳铝镁设计研究院有限公司 | Vertical continuous graphitizing furnace |
| CN106458596A (en) * | 2014-05-12 | 2017-02-22 | 株式会社Ihi | Graphitization furnace |
| CN104477885B (en) * | 2014-11-20 | 2016-08-17 | 中国电子科技集团公司第四十八研究所 | A kind of vertical sense of continuity answers high temperature graphitization stove |
| CN105645396B (en) * | 2016-03-03 | 2017-11-21 | 沈阳中禾能源科技有限公司 | A kind of continous way direct current superhigh temperature graphitizing electric furnace and application method |
| CN206680187U (en) * | 2017-03-30 | 2017-11-28 | 顾齐航 | Efficient sealed continuous graphitizing furnace |
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