CN114604868A - Graphite purification furnace - Google Patents
Graphite purification furnace Download PDFInfo
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- CN114604868A CN114604868A CN202210362906.2A CN202210362906A CN114604868A CN 114604868 A CN114604868 A CN 114604868A CN 202210362906 A CN202210362906 A CN 202210362906A CN 114604868 A CN114604868 A CN 114604868A
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 185
- 239000010439 graphite Substances 0.000 title claims abstract description 185
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 185
- 238000000746 purification Methods 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 claims abstract description 40
- 239000002994 raw material Substances 0.000 claims abstract description 40
- 230000006698 induction Effects 0.000 claims abstract description 30
- 238000010438 heat treatment Methods 0.000 claims abstract description 17
- 238000011084 recovery Methods 0.000 claims abstract description 16
- 238000007599 discharging Methods 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims description 72
- 239000000110 cooling liquid Substances 0.000 claims description 46
- 230000001502 supplementing effect Effects 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 238000012544 monitoring process Methods 0.000 claims description 6
- 239000012535 impurity Substances 0.000 description 12
- 238000004321 preservation Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 238000001802 infusion Methods 0.000 description 4
- 238000005660 chlorination reaction Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000005188 flotation Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000007123 defense Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/20—Graphite
- C01B32/21—After-treatment
- C01B32/215—Purification; Recovery or purification of graphite formed in iron making, e.g. kish graphite
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- Inorganic Chemistry (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention belongs to the technical field of graphite purification, and particularly relates to a graphite purification furnace which comprises a furnace body, a heating channel, an induction heater, a storage bin, a feeding pipe, a discharging pipe and a groove, wherein the groove is formed in one side, close to a graphite crucible, of the furnace body right above the graphite crucible; the air passage is arranged in the furnace body, and one end, close to the graphite crucible, of the air passage is communicated with the groove; the method is characterized in that: still include, recovery unit locates in the furnace body for the unnecessary heat that the furnace body produced when absorbing the heating preheats and keeps warm to the graphite raw materials, through setting up recovery unit, the energy is used for preheating and keeping warm to the graphite raw materials through recovery unit, has improved the utilization ratio of graphite purification stove to the energy, has reduced and has preheated the back graphite raw materials and heat the time of heating in the passageway, and then has accelerated the efficiency of graphite purification stove purification graphite.
Description
Technical Field
The invention belongs to the technical field of graphite purification, and particularly relates to a graphite purification furnace.
Background
Graphite is an important resource non-metallic mineral, has good performances of corrosion resistance, radiation resistance, electric conduction, heat conduction, self lubrication, high and low temperature resistance and the like, plays an important strategic support role in national economic development, scientific and technological modernization and national defense construction, and is listed as a strategic resource of the nation by the United states and many other countries. Graphite and products thereof are basic raw materials of modern high-temperature, high-pressure and high-speed industries and modern biology, information and energy, are also key materials and multifunctional environment-friendly materials of modern high and new technology industries, and are particularly indispensable strategic materials in the fields of nuclear energy, aerospace, national defense and military (such as a moderator in a nuclear reactor, a stealth material in a photoelectric countermeasure, a graphite bomb attacking an enemy electric power system and the like). the graphite raw materials are processed into graphite materials which must be purified technically firstly, and then are processed on granularity, morphology or performance according to the applied field;
the purification method in the prior art comprises a flotation method, an acid-base method, an HF method, a chlorination roasting method and a high-temperature purification method, wherein the high-temperature purification method is more complex in equipment and needs special design compared with other methods, but the purification precision is far higher than that of other methods, a large amount of energy needs to be consumed in the purification process of the high-temperature purification method, high temperature above 2700 ℃ is generated, and impurities in graphite are gasified so as to achieve the purpose of purifying the graphite, and the high-temperature purification method in the prior art mainly uses an Acheson furnace, and has the defects that a large amount of heat generated in the heating process of the high-temperature purification process needs to be cooled by cooling liquid after the equipment is used, a large amount of energy is consumed in the process, the utilization rate of the energy is reduced, and the energy consumption of the graphite purification furnace is improved;
in view of the above, in order to overcome the above technical problems, the present invention provides a graphite purification furnace, which solves the above technical problems.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the purification method in the prior art comprises a flotation method, an acid-base method, an HF method, a chlorination roasting method and a high-temperature purification method, wherein the high-temperature purification method is more precise than other methods although equipment is complex and needs special design compared with other methods, a large amount of energy needs to be consumed in the purification process of the high-temperature purification method, high temperature above 2700 ℃ is generated, and impurities in graphite are gasified to further achieve the purpose of purifying the graphite.
The invention provides a graphite purification furnace, which comprises a furnace body, a graphite crucible, an induction heater, a storage bin, a feeding pipe and a discharging pipe, wherein the graphite crucible is arranged in the furnace body;
the groove is formed in one side, close to the graphite crucible, of the furnace body above the graphite crucible;
the air passage is arranged in the furnace body, and one end, close to the graphite crucible, of the air passage is communicated with the groove;
the method is characterized in that: further comprising:
and the recovery device is arranged in the furnace body and used for absorbing the redundant heat generated by the furnace body during heating and preheating and insulating the graphite raw material.
Preferably, the recovery device comprises:
the first cooling box is sleeved on the induction heater;
the second cooling tank is sleeved on the discharge pipe;
the first annular chamber is arranged in the furnace body;
the second annular chamber is arranged in the furnace body, and the outer diameter of the second annular chamber is smaller than the inner diameter of the first annular chamber;
a first pipeline communicating the first cooling box with the first annular chamber;
the first plunger pump is arranged on the first pipeline;
the second pipeline is used for communicating the second cooling box with the second annular chamber;
the second plunger pump is arranged on the second pipeline;
one end of the third pipeline is communicated with the first cooling box, and the other end of the third pipeline is communicated with the first annular chamber;
the third plunger pump is arranged in the third pipeline and used for conveying the cooling liquid cooled in the first annular chamber into the first cooling box;
one end of the fourth pipeline is communicated with the second cooling tank, and the other end of the fourth pipeline is communicated with the second annular chamber;
the fourth plunger pump is arranged in the fourth pipeline and used for conveying the cooling liquid cooled in the second annular chamber into the second cooling tank;
the first sensor is arranged in the first annular chamber and is used for monitoring the content of the cooling liquid in the first annular chamber in real time;
the second sensor is arranged in the first annular chamber and is used for monitoring the content of the cooling liquid in the second annular chamber in real time;
one end of the first liquid supplementing pipe is communicated with the first cooling box and is used for supplementing cooling liquid to the first cooling box;
and the second liquid supplementing pipe is communicated with the second cooling box at one end and is used for supplementing cooling liquid to the second cooling box.
Preferably, a vertical cavity is formed in the furnace body, and the vertical cavity is filled with a high-temperature-resistant heat conduction material.
Preferably, a heat insulation layer is arranged outside the first annular cavity.
Preferably, the silo is higher away from the feed pipe than close to the feed pipe.
Preferably, the vertical height of the groove is higher than the outlet of the feeding pipe.
Preferably, an infrared thermometer is arranged at the graphite crucible in the furnace body.
Preferably, the graphite crucible in the furnace body is made of graphite with low ash content.
Preferably, the first plunger pump and the second plunger pump are both graphite plunger pumps.
Preferably, the temperature of the graphite crucible in the furnace body is not more than 2900 ℃.
The invention has the following beneficial effects:
1. according to the graphite purification furnace, the recovery device is arranged, so that energy generated by the induction heater working in the graphite purification process and the graphite after cooling and purification is recycled, the recovered energy is used for preheating and heat preservation of the graphite raw material through the recovery device, the utilization rate of the graphite purification furnace on energy is improved, the heating time in the graphite crucible of the preheated graphite raw material is shortened, and the efficiency of the graphite purification furnace for purifying the graphite is accelerated.
2. According to the graphite purifying furnace, the temperature in the furnace body is conducted to the lower part of the storage bin through the high-temperature-resistant heat conduction material filled in the vertical cavity formed in the furnace body and is matched with the second annular cavity, so that the preheating area of the graphite raw material is increased, the heating time of the graphite raw material is further reduced, and the purifying efficiency of the graphite purifying furnace is further improved.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a body diagram of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a cross-sectional view taken at B-B of FIG. 2;
FIG. 4 is an enlarged view at A of FIG. 1;
FIG. 5 is an enlarged view at C in FIG. 3;
in the figure: furnace body 1, graphite crucible 11, recess 12, air flue 13, vertical cavity 14, infrared thermometer 15, induction heater 2, feed bin 3, inlet pipe 31, discharging pipe 32, recovery unit 4, cooler tank 41, No. two cooler tanks 42, No. one annular chamber 43, No. two annular chambers 431, heat preservation 432, No. one pipeline 44, No. one plunger pump 441, No. two pipelines 45, No. two plunger pumps 451, No. three pipelines 46, No. three plunger pumps 461, No. four pipelines 47, No. four plunger pumps 471, No. one sensor 48, No. two sensors 481, No. one fluid infusion pipe 49, No. two fluid infusion pipes 491.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The graphite purification furnace in the prior art has the defects that the purification method in the prior art comprises a flotation method, an acid-base method, an HF method, a chlorination roasting method and a high-temperature purification method, the high-temperature purification method is complex in equipment and needs special design compared with other methods, but the purification precision is far higher than that of other methods, a large amount of energy needs to be consumed in the purification process by adopting the high-temperature purification method, high temperature above 2700 ℃ is generated, impurities in graphite are gasified, and then the purpose of graphite purification is achieved.
In order to solve the above problems, the present embodiment adopts the following main concepts: in the working process of the graphite purifying furnace, the graphite raw material in the graphite crucible 11 in the furnace body 1 is heated and purified by the feed pipe 31 in the feed bin 3 in the heating process of the induction heater 2, and the heat generated by the induction heater 2 and the heat absorbed by cooling when the graphite is discharged from the discharge pipe 32 after purification are collected by the recovery device 4, and the graphite is preheated and insulated.
Therefore, for better understanding of the above technical solutions, the following detailed descriptions will be provided in conjunction with the drawings and the detailed description of the present specification:
the invention provides a graphite purification furnace, which comprises a furnace body 1, a graphite crucible 11, an induction heater 2, a storage bin 3, a feeding pipe 31 and a discharging pipe 32;
the groove 12 is formed in one side, close to the graphite crucible 11, of the furnace body 1 above the graphite crucible 11;
the air flue 13 is arranged in the furnace body 1, and one end, close to the graphite crucible 11, of the air flue 13 is communicated with the groove 12;
further comprising:
the recovery device 4 is arranged in the furnace body 1 and used for absorbing the redundant heat generated by the furnace body 1 during heating and preheating and insulating the graphite raw material;
before the graphite purifying furnace starts to work, the bin 3 needs to be filled with graphite to be purified, then the graphite purifying furnace is started, after the graphite purifying furnace starts to work, the graphite raw material in the bin 3 enters the graphite crucible 11 in the furnace body 1 along the feeding pipe 31 and is heated by the high temperature generated when the induction heater 2 works, in the heating process, the groove 12 arranged on the furnace body 1 at the upper side of the graphite crucible 11 is beneficial to overflowing the furnace body 1 from the air passage 13 along the groove 12 after the impurities are gasified in the purification process of the graphite raw material so as to separate from the graphite, thereby reducing the phenomenon that the impurities after gasification are remained in the graphite, thereby improving the quality of the purified graphite of the graphite purifying furnace, further reducing the content of impurities in the graphite, in the heating process, the heat generated by the induction heater 2 and the heat absorbed by the graphite when the graphite is discharged from the discharge pipe 32 after purification are collected by the recovery device 4, and the graphite is preheated and insulated;
according to the invention, the recovery device 4 is arranged, so that energy generated by the operation of the induction heater 2 in the graphite purification process and the cooling of the purified graphite is recovered and secondarily utilized, the recovered energy is used for preheating and heat preservation of the graphite raw material through the recovery device 4, the utilization rate of the graphite purification furnace on energy is improved, the heating time in the preheated graphite raw material graphite crucible 11 is reduced, and the efficiency of the graphite purification furnace for purifying the graphite is further accelerated.
As an embodiment of the present invention, the recovery device 4 includes:
the first cooling box 41, wherein the first cooling box 41 is sleeved on the induction heater 2;
the second cooling box 42 is sleeved on the discharge pipe 32;
the first annular chamber 43, the first annular chamber 43 is arranged in the furnace body 1;
a second annular chamber 431, wherein the second annular chamber 431 is arranged in the furnace body 1, and the outer diameter of the second annular chamber 431 is smaller than the inner diameter of the first annular chamber 43;
a first conduit 44, the first conduit 44 communicating the first cooling tank 41 with the first annular chamber 43;
the first plunger pump 441 is arranged on the first pipeline 44;
a second conduit 45, the second conduit 45 communicating the second cooling tank 42 with the second annular chamber 431;
the second plunger pump 451, wherein the second plunger pump 451 is arranged on the second pipeline 45;
a third pipeline 46, wherein one end of the third pipeline 46 is communicated with the first cooling box 41, and the other end of the third pipeline 46 is communicated with the first annular chamber 43;
a third plunger pump 461, wherein the third plunger pump 461 is arranged in the third pipeline 46 and is used for conveying the cooling liquid cooled in the first annular chamber 43 to the first cooling tank 41;
a fourth pipeline 47, wherein one end of the fourth pipeline 47 is communicated with the second cooling tank 42, and the other end of the fourth pipeline 47 is communicated with the second annular chamber 431;
a fourth plunger pump 471, wherein the fourth plunger pump 471 is arranged on the fourth pipeline 47 and is used for conveying the cooling liquid cooled in the second annular chamber 431 to the second cooling tank 42;
the first sensor 48 is arranged in the first annular chamber 43 and used for monitoring the content of the cooling liquid in the first annular chamber 43 in real time;
a second sensor 481, wherein the second sensor 481 is arranged in the first annular chamber 43 and is used for monitoring the content of the cooling liquid in the second annular chamber 431 in real time;
one end of the first liquid supplementing pipe 49 is communicated with the first cooling box 41 and is used for supplementing cooling liquid to the first cooling box 41;
a second liquid supplementing pipe 491, one end of which is communicated with the second cooling tank 42 and is used for supplementing cooling liquid to the second cooling tank 42;
after the graphite purifying furnace starts to work, graphite raw materials in the bin 3 enter the graphite crucible 11 in the furnace body 1 along the feeding pipe 31 to react with the induction heater 2 to generate high temperature so as to heat graphite, in the heating process, heat generated by the induction heater 2 during working is absorbed by cooling liquid in the first cooling box 41, and the first plunger pump 441 conveys the cooling liquid absorbing the heat of the induction heater 2 from the first cooling box 41 to the first annular chamber 43 along the first pipeline 44 so as to insulate the furnace body 1;
after the graphite is purified, when the graphite is discharged from the discharge pipe 32, the cooling liquid in the second cooling box 42 cools the graphite, and the second plunger pump 451 transfers the cooling liquid absorbing the heat of the graphite into the second annular chamber 431 along the second pipeline 45, so that the graphite raw material in the bin 3 is preheated;
a third pipeline 46, one end of which is communicated with the first cooling box 41, and the other end of which is communicated with the first annular chamber 43, conveys the cooling liquid, which is used for cooling the lost energy in the first annular chamber 43 for preserving the heat of the graphite raw material in the bin 3, from the first annular chamber 43 to the first cooling box 41 to cool the induction heater 2 under the work of a third plunger pump 461, absorbs the heat so that the first plunger pump 441 conveys the cooling liquid absorbing the heat of the induction heater 2 from the first cooling box 41 to the first annular chamber 43 along the first pipeline 44, and keeps preserving the heat of the furnace body 1;
a fourth pipeline 47, one end of which is communicated with the second cooling tank 42 and the other end of which is communicated with the second annular chamber 431, conveys the cooling liquid, which is used for preheating the graphite raw material in the bin 3 and is cooled by dissipating energy in the second annular chamber 431 and is cooled, from the second annular chamber 431 to the second cooling tank 42 under the work of a fourth plunger pump 471, so as to cool the graphite by the cooling liquid in the second cooling tank 42 when the graphite raw material is discharged from the discharge pipe 32, absorb heat, so that the second plunger pump 451 conveys the cooling liquid, which absorbs the heat when the graphite is discharged from the discharge pipe 32, from the second cooling tank 42 to the second annular chamber 431 along a second pipeline 45, and continuously preheats the graphite raw material in the bin 3;
when the first sensor 48 detects that the content of the cooling liquid flowing in the first annular chamber 43 is reduced, the first liquid supplementing pipe 49 is used for supplementing the cooling liquid to the first cooling tank 41, and the second sensor 481 detects that the content of the cooling liquid flowing in the second annular chamber 431 is reduced, and the second liquid supplementing pipe 491 is used for supplementing the cooling liquid to the second cooling tank 42;
according to the invention, the first cooling box 41, the second cooling box 42, the first annular chamber 43 and the second annular chamber 431 are arranged, so that the induction heater 2 is cooled during working, the working performance of the induction heater 2 is improved, the heat generated by the induction heater 2 is used for heat preservation of the furnace body 1, the heat loss of the furnace body 1 is reduced, meanwhile, the heat for cooling and purifying graphite is collected and used for preheating the graphite raw material, the heating time of the graphite raw material is reduced, and the purification efficiency of the graphite purification furnace is improved;
through setting up No. three pipeline 46, No. three plunger pump 461, No. four pipeline 47, No. four plunger pumps, No. one sensor 48, No. two sensor 481, No. one fluid infusion pipe 49 and No. two fluid infusion pipe 491, act on induction heater 2 and the heat circulation to graphite cooling after the purification to furnace body 1, preheat and keep warm furnace body 1.
As a specific embodiment of the invention, a vertical cavity 14 is formed in the furnace body 1, and a high-temperature-resistant heat conduction material is filled in the vertical cavity 14;
when graphite purification stove work simultaneously, the high temperature resistant heat conduction material of the intussuseption of the vertical cavity 14 that sets up on the furnace body 1 conducts the temperature in the furnace body 1 to feed bin 3 below, cooperatees with annular cavity 431 No. two, and the increase is to the area that the graphite raw materials preheated, further reduces the time of graphite raw materials heating, and then improves the purification efficiency of graphite purification stove.
As a specific embodiment of the present invention, an insulating layer 432 is provided outside the first annular chamber 43;
the heat preservation layer 432 is arranged outside the first annular chamber 43 and is matched with the first annular chamber 43 to preserve heat of the furnace body 1 in the working process of the graphite purifying furnace, so that heat loss is further reduced, and the utilization rate of the graphite purifying furnace to energy is further improved.
As a specific embodiment of the present invention, the bunker 3 is higher away from the feeding pipe 31 than close to the feeding pipe 31;
graphite raw materials in the feed bin 3 of being convenient for slide to be close to feed pipe 31 and carry out the edulcoration in the feed pipe 31 gets into graphite crucible 11 from feed bin 3 is kept away from feed pipe 31, is favorable to reducing remaining graphite raw materials in the feed bin 3, improves the utilization ratio of graphite purification stove to graphite raw materials.
As a specific embodiment of the invention, the vertical height of the groove 12 is higher than the outlet of the feeding pipe 31;
the vertical height of the groove 12 is higher than the outlet of the feeding pipe 31, which is favorable for reducing the phenomenon that the gasified impurities enter the graphite raw material again, and further improves the quality of the purified graphite of the graphite purifying furnace.
As a specific embodiment of the invention, an infrared thermometer 15 is arranged at the graphite crucible 11 in the furnace body 1;
the furnace body 1 is internally provided with an infrared thermometer 15 which detects the temperature of the graphite crucible 11 in the furnace body 1 in the purification process of the graphite purification furnace, so that the current of the induction heater 2 is adjusted, the temperature in the furnace body 1 is kept relatively stable, and the phenomenon that the impurity removal efficiency is reduced because partial impurities caused by temperature fluctuation are not removed is reduced, thereby further improving the quality of the purified graphite of the graphite purification furnace.
As a specific embodiment of the present invention, the graphite crucible 11 in the furnace body 1 is made of graphite with low ash content;
the graphite crucible 11 on the inner wall of the furnace body 1 is made of graphite with lower ash content, which is beneficial to overflowing of impurity ash in the graphite, is beneficial to purifying graphite raw materials, and improves the actual use effect of the purifying furnace of the graphite purifying furnace.
As a specific embodiment of the present invention, the first plunger pump 441 and the second plunger pump 451 are both graphite plunger pumps;
the first plunger pump 441 and the second plunger pump 451 are both graphite plunger pumps, and the high temperature resistance of the plunger pumps is beneficial to long-time operation in the furnace body 1 at high temperature, so that the actual service life of the graphite purifying furnace is prolonged.
As a specific embodiment of the present invention, the temperature at the position of the graphite crucible 11 in the furnace body 1 does not exceed 2900 degrees;
the temperature of the position of the graphite crucible 11 in the furnace body 1 is not more than 2900 ℃ and is higher than 2700 ℃ for gasifying most of impurities, and meanwhile, the cooling liquid is prevented from decomposing to generate high-pressure gas due to overhigh temperature, so that the use safety of the graphite purification furnace is improved.
The specific working process is as follows:
before the graphite purifying furnace starts to work, graphite to be purified needs to be filled in the bin 3, then the graphite purifying furnace is started to start to work, graphite raw materials in the bin 3 enter the graphite crucible 11 in the furnace body 1 along the feeding pipe 31 to react with the induction heater 2 to generate high temperature, so that the graphite is heated, in the heating process, the infrared thermometer 14 is arranged in the furnace body 1 to detect the temperature of the graphite crucible 11 in the furnace body 1 in the purifying process of the graphite purifying furnace, further, the current of the induction heater 2 is adjusted, and the temperature in the furnace body 1 is kept relatively stable;
the heat generated by the induction heater 2 during working is absorbed by the cooling liquid in the first cooling box 41, the first plunger pump 441 conveys the cooling liquid absorbing the heat of the induction heater 2 from the first cooling box 41 to the first annular chamber 43 along the first pipeline 44 to preserve heat of the furnace body 1, and the heat preservation layer 432 is arranged outside the first annular chamber 43 and is matched with the first annular chamber 43 to preserve heat of the furnace body 1 during the working process of the graphite purifying furnace;
when the purified graphite is discharged from the discharge pipe 32, the graphite is cooled by the cooling liquid in the second cooling box 42, the second plunger pump 451 transfers the cooling liquid absorbing the heat of the graphite into the second annular chamber 431 along the second pipeline 45, so that the graphite raw material in the bin 3 is preheated, and meanwhile, the high-temperature-resistant heat-conducting material filled in the vertical chamber 12 formed in the furnace body 1 conducts the temperature in the furnace body 1 to the lower part of the bin 3 and is matched with the second annular chamber 431, so that the preheating area of the graphite raw material is increased;
a third pipeline 46, one end of which is communicated with the first cooling box 41, and the other end of which is communicated with the first annular chamber 43, conveys the cooling liquid, which is used for cooling the lost energy in the first annular chamber 43 for preserving the heat of the graphite raw material in the bin 3, from the first annular chamber 43 to the first cooling box 41 to cool the induction heater 2 under the work of a third plunger pump 461, absorbs the heat so that the first plunger pump 441 conveys the cooling liquid absorbing the heat of the induction heater 2 from the first cooling box 41 to the first annular chamber 43 along the first pipeline 44, and keeps preserving the heat of the furnace body 1;
a fourth pipeline 47, one end of which is communicated with the second cooling tank 42 and the other end of which is communicated with the second annular chamber 431, conveys the cooling liquid, which is used for preheating the graphite raw material in the bin 3 and is cooled by dissipating energy in the second annular chamber 431 and is cooled, from the second annular chamber 431 to the second cooling tank 42 under the work of a fourth plunger pump 471, so as to cool the graphite by the cooling liquid in the second cooling tank 42 when the graphite raw material is discharged from the discharge pipe 32, absorb heat, so that the second plunger pump 451 conveys the cooling liquid, which absorbs the heat when the graphite is discharged from the discharge pipe 32, from the second cooling tank 42 to the second annular chamber 431 along a second pipeline 45, and continuously preheats the graphite raw material in the bin 3;
when the first sensor 48 detects that the content of the cooling liquid flowing in the first annular chamber 43 is reduced, the first liquid supplementing pipe 49 is used for supplementing the cooling liquid to the first cooling tank 41, and the second sensor 481 detects that the content of the cooling liquid flowing in the second annular chamber 431 is reduced, and the second liquid supplementing pipe 491 is used for supplementing the cooling liquid to the second cooling tank 42;
the groove 12 arranged along the furnace body 1 at the upper side of the graphite crucible 11 after the impurities are gasified in the purification process of the graphite raw material is separated from the graphite, and then the purified graphite is collected from the discharge hole 32.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A graphite purifying furnace comprises a furnace body (1), a graphite crucible (11), an induction heater (2), a storage bin (3), a feeding pipe (31) and a discharging pipe (32);
the groove (12), the groove (12) is arranged on one side, close to the graphite crucible (11), of the furnace body (1) above the graphite crucible (11);
the air passage (13) is arranged in the furnace body (1), and one end, close to the graphite crucible (11), of the air passage (13) is communicated with the groove (12);
the method is characterized in that: further comprising:
the recovery device (4) is arranged in the furnace body (1) and used for absorbing the redundant heat generated by the furnace body (1) during heating and preheating and insulating the graphite raw material.
2. A graphite purification furnace according to claim (1), characterized in that: the recovery device (4) comprises:
the first cooling box (41), wherein the first cooling box (41) is sleeved on the induction heater (2);
the second cooling box (42), the second cooling box (42) is sleeved on the discharge pipe (32);
the first annular chamber (43), the first annular chamber (43) is arranged in the furnace body (1);
the second annular chamber (431) is arranged in the furnace body (1), and the outer diameter of the second annular chamber (431) is smaller than the inner diameter of the first annular chamber (43);
a first conduit (44), the first conduit (44) communicating the first cooling tank (41) with the first annular chamber (43);
the first plunger pump (441), wherein the first plunger pump (441) is arranged on the first pipeline (44);
a second conduit (45), the second conduit (45) communicating the second cooling tank (42) with the second annular chamber (431);
the second plunger pump (451), the second plunger pump (451) is arranged on the second pipeline (45);
a third pipeline (46), wherein one end of the third pipeline (46) is communicated with the first cooling box (41), and the other end of the third pipeline (46) is communicated with the first annular chamber (43);
the third plunger pump (461), wherein the third plunger pump (461) is arranged in the third pipeline (46) and is used for conveying the cooling liquid cooled in the first annular chamber (43) to the first cooling box (41);
one end of the fourth pipeline (47) is communicated with the second cooling box (42), and the other end of the fourth pipeline (47) is communicated with the second annular chamber (431);
the fourth plunger pump (471), the fourth plunger pump (471) is arranged in the fourth pipeline (47) and is used for conveying the cooling liquid cooled in the second annular chamber (431) to the second cooling tank (42);
the first sensor (48) is arranged in the first annular chamber (43) and is used for monitoring the content of the cooling liquid in the first annular chamber (43) in real time;
the second sensor (481) is arranged in the first annular chamber (43) and is used for monitoring the content of the cooling liquid in the second annular chamber (431) in real time;
one end of the first liquid supplementing pipe (49) is communicated with the first cooling box (41) and is used for supplementing cooling liquid to the first cooling box (41);
and one end of the second liquid supplementing pipe (491) is communicated with the second cooling box (42) and is used for supplementing cooling liquid to the second cooling box (42).
3. The graphite purification furnace of claim 1, wherein: a vertical cavity (14) is formed in the furnace body (1), and high-temperature-resistant heat conduction materials are filled in the vertical cavity (14).
4. The graphite purification furnace of claim 2, wherein: and an insulating layer (432) is arranged outside the first annular chamber (43).
5. The graphite purification furnace of claim 1, wherein: the feed bin (3) is higher away from the feed pipe (31) than close to the feed pipe (31).
6. The graphite purifying furnace according to claim 5, wherein: the vertical height of the groove (13) is higher than the outlet of the feeding pipe (31).
7. The graphite purifying furnace according to claim 1, wherein: an infrared thermometer (15) is arranged at the graphite crucible (11) in the furnace body (1).
8. The graphite purifying furnace according to claim 1, wherein: the graphite crucible (11) in the furnace body (1) is made of graphite with low ash content.
9. The graphite purifying furnace according to claim 2, wherein: the first plunger pump (441) and the second plunger pump (451) are graphite plunger pumps.
10. The graphite purification furnace of claim 1, wherein: the temperature of the position of the graphite crucible (11) in the furnace body (1) is not more than 2900 ℃.
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| CN202210362906.2A CN114604868A (en) | 2022-04-07 | 2022-04-07 | Graphite purification furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210362906.2A CN114604868A (en) | 2022-04-07 | 2022-04-07 | Graphite purification furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115744898A (en) * | 2022-11-18 | 2023-03-07 | 安徽省煤田地质局勘查研究院 | Graphite separation and purification device and purification method |
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| CN103086361A (en) * | 2011-11-07 | 2013-05-08 | 周兵 | Improved graphite purification furnace |
| CN103673026A (en) * | 2012-09-20 | 2014-03-26 | 天津龙汇碳石墨制品有限公司 | Graphite purifying condensed water waste-heat utilization device |
| CN109160511A (en) * | 2018-09-17 | 2019-01-08 | 厦门大学 | A kind of device and method of graphite purification |
| KR20210079544A (en) * | 2019-12-20 | 2021-06-30 | 주식회사 포스코 | Continuous graphitization apparatus using induction heating furnace |
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| CN103086361A (en) * | 2011-11-07 | 2013-05-08 | 周兵 | Improved graphite purification furnace |
| CN103673026A (en) * | 2012-09-20 | 2014-03-26 | 天津龙汇碳石墨制品有限公司 | Graphite purifying condensed water waste-heat utilization device |
| CN102923699A (en) * | 2012-11-26 | 2013-02-13 | 鹤岗市赛欧新材料有限责任公司 | Continuous pyrographite purifying device |
| CN109160511A (en) * | 2018-09-17 | 2019-01-08 | 厦门大学 | A kind of device and method of graphite purification |
| KR20210079544A (en) * | 2019-12-20 | 2021-06-30 | 주식회사 포스코 | Continuous graphitization apparatus using induction heating furnace |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115744898A (en) * | 2022-11-18 | 2023-03-07 | 安徽省煤田地质局勘查研究院 | Graphite separation and purification device and purification method |
| CN115744898B (en) * | 2022-11-18 | 2024-03-22 | 安徽省煤田地质局勘查研究院 | Graphite separation and purification device and purification method |
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