CN116499241B - Roasting production method of graphite crucible - Google Patents
Roasting production method of graphite crucible Download PDFInfo
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- CN116499241B CN116499241B CN202310776889.1A CN202310776889A CN116499241B CN 116499241 B CN116499241 B CN 116499241B CN 202310776889 A CN202310776889 A CN 202310776889A CN 116499241 B CN116499241 B CN 116499241B
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- frame
- discharging
- smoke
- flame
- roasting
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 239000010439 graphite Substances 0.000 title claims abstract description 39
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 39
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 239000000779 smoke Substances 0.000 claims abstract description 87
- 238000007599 discharging Methods 0.000 claims abstract description 83
- 238000004140 cleaning Methods 0.000 claims abstract description 39
- 239000002245 particle Substances 0.000 claims abstract description 38
- 239000000463 material Substances 0.000 claims abstract description 37
- 238000000034 method Methods 0.000 claims abstract description 17
- 239000000126 substance Substances 0.000 claims abstract description 6
- 238000010924 continuous production Methods 0.000 claims abstract description 4
- 238000000926 separation method Methods 0.000 claims description 36
- 238000007789 sealing Methods 0.000 claims description 21
- 238000010438 heat treatment Methods 0.000 claims description 20
- 239000011449 brick Substances 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 8
- 230000007246 mechanism Effects 0.000 claims description 8
- 238000010304 firing Methods 0.000 claims description 5
- 238000005192 partition Methods 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000005245 sintering Methods 0.000 abstract description 11
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 3
- 239000003517 fume Substances 0.000 description 12
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 239000006004 Quartz sand Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- VEMKTZHHVJILDY-UHFFFAOYSA-N resmethrin Chemical compound CC1(C)C(C=C(C)C)C1C(=O)OCC1=COC(CC=2C=CC=CC=2)=C1 VEMKTZHHVJILDY-UHFFFAOYSA-N 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/08—Details peculiar to crucible or pot furnaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/08—Details peculiar to crucible or pot furnaces
- F27B14/0806—Charging or discharging devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/08—Details peculiar to crucible or pot furnaces
- F27B14/14—Arrangements of heating devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/001—Extraction of waste gases, collection of fumes and hoods used therefor
- F27D17/002—Details of the installations, e.g. fume conduits or seals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D25/00—Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/08—Details peculiar to crucible or pot furnaces
- F27B14/0806—Charging or discharging devices
- F27B2014/0818—Discharging
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Carbon And Carbon Compounds (AREA)
- Furnace Details (AREA)
Abstract
The invention relates to a graphite crucible roasting furnace and a roasting production method, the roasting furnace comprises a furnace pit excavated below the ground, a plurality of groups of flame paths and material paths are arranged in the furnace pit, a flame frame and a smoke exhaust frame are arranged above the furnace pit, and smoke exhaust frames and a cleaning smoke exhaust frame are respectively arranged on two sides of the flame frame. The roasting method comprises the steps of hoisting a graphite crucible to be sintered in a material channel, throwing refractory particles to bury the graphite crucible, starting a smoke removing and discharging frame to suck volatile substances, moving the flame frame and the smoke removing and discharging frame forwards along with the roasting progress, taking out the refractory particles by personnel by means of a suction pipe of the smoke removing and discharging frame, separating the refractory particles by means of a screen pipe, taking out the crucible after roasting, moving the flame frame, the smoke removing and discharging frame and the smoke removing and discharging frame to one end of a furnace pit, exchanging a support pipe of the smoke removing and discharging frame and the screen pipe of the smoke removing and discharging frame, and realizing continuous production. The invention has the advantages of improving the sintering quality and efficiency of the graphite crucible, reducing energy consumption and pollution, and simplifying operation and maintenance.
Description
Technical Field
The invention belongs to the field of graphite roasting kilns, and particularly relates to a graphite crucible roasting furnace and a roasting production method.
Background
The sintering of graphite crucible needs to go through steps such as crucible landfill, preheat, calcination, cooling, ejection of compact, the required process time is long, and in order to reduce the heat loss, improve the even heated effect of crucible, the crucible is buried by refractory particles such as haydite or quartz sand granule, through the frame of discharging fume with the flame of flame holder blowout along firing the passageway and sucking, make the flame can cover longer flame path, make the graphite crucible in the material passageway between the flame path obtain heating and sintering, the present crucible ejection of compact needs the manual work to dig the refractory particles of landfill, and hang out the graphite crucible through the overhead traveling crane, clean up the material passageway after burying new crucible of waiting to burn, required clearance time is long, physical labor is big, in addition because the fire holder and the frame of discharging fume begin the sintering from one side, and with the process beat, sinter to the fire pit opposite side gradually with the help of the overhead traveling crane, after the sintering, need with flame holder and the whole position of discharging fume holder, the processing once more, the overhead traveling crane height is limited in the workshop, and frame and flame holder have a take place to be high, the degree, the lifting difficulty is big, the easy to take place slightly, the airtight pipeline is passed through, the natural gas is influenced easily, the risk is influenced after the natural gas.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a graphite crucible roasting furnace and a roasting production method, which can improve the sintering efficiency of a graphite crucible, reduce the landfill preparation time, simplify the operation and improve the production safety.
The invention adopts the specific technical scheme that:
the utility model provides a graphite crucible roasting furnace, is including excavating the pit below ground, be provided with multiunit flame path in the pit, the interval forms the trough-shaped between the flame path, is used for roasting the material way of graphite crucible, the flame path has been put up on the pit and has been set up flame holder and frame of discharging fume, the spray tube of flame holder inserts in the flame path, and pit one side is provided with negative pressure wind channel, negative pressure wind channel and frame intercommunication of discharging fume, the frame of discharging fume is with the flame path intercommunication with the help of the suction tube, flame both sides are provided with the frame of discharging fume respectively and clean the frame of discharging fume, the frame of discharging fume sets up in flame holder front side, clean the frame of discharging fume sets up at flame holder rear side, the frame of discharging fume is with the help of stay tube and negative pressure wind channel intercommunication, clean the frame of discharging fume with the help of screen pipe and negative pressure wind channel intercommunication.
The sieve tube is of an inverted L-shaped structure and comprises a separation bin and a connecting pipe arranged on one side of the separation bin, the separation bin is of a box-shaped structure, the connecting pipe is connected to the side wall of the separation bin, a sieve plate is arranged at a port of the connecting pipe extending into the separation bin, the upper part of the separation bin is communicated with a pipeline of a cleaning smoke exhaust frame, and a discharging mechanism is arranged at the lower part of the separation bin.
The discharging mechanism comprises a discharging groove arranged at the lower part of the separation bin, the discharging groove is provided with a through groove communicated with the separation bin and the outside, a discharging roller driven to rotate by a motor is clamped in the through groove, a groove is arranged on the discharging roller, and the groove is contacted with the side wall of the through groove and forms sealing fit in the process of rotating along with the discharging roller.
The fire path be with the use of the refractory brick to pile up the tubular structure that forms, the cross-section is the rectangle, the material says the downside be provided with the auxiliary heating compartment of fire path intercommunication, the refractory brick is laid respectively to auxiliary heating compartment upside down, still be provided with the resistant firebrick that the interval was put in the auxiliary heating compartment, the resistant firebrick that the upside down side was put with the help of this interval supports and forms the cavity structure, the middle part of auxiliary heating compartment is provided with the partition wall that resistant firebrick crisscross butt was arranged.
The suction pipes are arranged at equal intervals along the pipeline direction of the smoke exhaust frame, and the distance between the suction pipes is equal to the distance between the fire channels.
The suction pipe is a telescopic corrugated pipe.
Comprises the following steps of the method,
s1, hoisting a graphite crucible to be sintered in a material channel, and throwing refractory particles to bury the graphite crucible;
s2, covering sealing gaskets on the material channel and the flame channel, wherein sealing ports with covers are arranged on the flame channel at intervals, and the flame frame and the smoke removal and exhaust frame penetrate through the sealing gaskets and are connected with the flame channel by means of the sealing ports;
s3, igniting the flame frame, and starting the smoke removing and discharging frame to suck volatile substances generated in the roasting process;
s4, moving the flame and the smoke removing and discharging frame forwards along with the roasting progress, wherein a material cooling area is formed at the rear side of the flame in the moving direction, and the smoke removing and discharging frame is arranged in the material cooling area;
s5, personnel extract the refractory particles in the material channel by means of a suction pipe for cleaning the smoke exhaust frame, separate the refractory particles by means of a screen pipe, take out the crucible after roasting, fill the crucible to be roasted and re-fill the crucible to be roasted by using the refractory particles to form a state to be roasted;
s6, moving the smoke removing frame, the smoke removing frame and the cleaning smoke removing frame to one end of the furnace pit, exchanging the support tube of the smoke removing frame with the sieve tube of the cleaning smoke removing frame, so that the smoke removing frame and the cleaning smoke removing frame are exchanged in function, at the moment, after the crucible is buried again, the smoke removing frame, the cleaning smoke removing frame and the fire frame are reversely baked to the other end of the furnace pit, and continuous production is realized.
And step S1, refractory particles for bedding are paved before the graphite crucible to be sintered is hoisted, the refractory particles for bedding cover the bottom of the material channel and isolate the bottom of the material channel from contacting the graphite crucible to be sintered.
The beneficial effects of the invention are as follows:
(1) According to the roasting method, the crucible is buried through refractory particles, and volatile substances generated in the roasting process are sucked and separated through the smoke removing and discharging frame, so that the crucible is uniformly heated, and the environmental pollution is reduced;
(2) The auxiliary heating separation chamber is adopted to increase the heat transfer area and the heat transfer efficiency between the flame path and the material path, meanwhile, the direct impact of flame on the crucible is avoided, the sintering quality and the sintering efficiency of the crucible are improved, and the reduction of energy consumption and electricity consumption is facilitated;
(3) According to the invention, the cleaning smoke discharging frame and the sieve tube are adopted to suck and separate refractory particles in the material channel, so that the operations of discharging and cleaning are simplified, the physical labor amount and the cleaning time are reduced, and the production efficiency is improved;
(4) The invention adopts the production mode of reciprocating movement of the flame frame, the smoke removing and discharging frame and the cleaning and discharging frame, realizes continuous roasting process, does not need to integrally exchange the flame frame and the smoke discharging frame, avoids the difficulty and the risk of hoisting, and simplifies maintenance and management.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic transverse cross-sectional view of a smoke abatement and removal rack;
FIG. 3 is a schematic view in transverse cross section of a purge hood;
FIG. 4 is an enlarged schematic view of portion A of FIG. 3;
FIG. 5 is a schematic view of a pit in a top view;
FIG. 6 is a schematic view of auxiliary heating of refractory bricks for support in the compartment;
in the attached drawings, 1, a flame path, 2, a material path, 3, a flame frame, 4, a negative pressure air duct, 5, a suction pipe, 6, a smoke removing and discharging frame, 7, a cleaning and discharging frame, 8, a support pipe, 9, a separation bin, 10, a connecting pipe, 11, a sieve plate, 12, a discharge chute, 13, a discharge roller, 14, an auxiliary heating separation chamber, 15 and a partition wall.
Detailed Description
The invention is further described with reference to the accompanying drawings and specific examples:
the invention discloses a graphite crucible roasting furnace, which is shown in fig. 1, 2 and 3 and comprises a furnace pit excavated below the ground, wherein a plurality of groups of flame paths 1 are arranged in the furnace pit, groove-shaped material paths 2 for roasting graphite crucibles are formed between the flame paths 1 at intervals, flame frames 3 and smoke exhaust frames are arranged on the furnace pit, spray pipes of the flame frames 3 are inserted into the flame paths 1, a negative pressure air duct 4 is arranged on one side of the furnace pit, the negative pressure air duct 4 is communicated with the smoke exhaust frames, the smoke exhaust frames are communicated with the flame paths 1 by virtue of suction pipes 5, smoke exhaust frames 6 and smoke exhaust cleaning frames 7 are respectively arranged on two sides of the flame frames 3, the smoke exhaust and exhaust frames 6 are arranged on the front side of the flame frames 3, the smoke exhaust cleaning and exhaust frames 7 are arranged on the rear side of the flame frames 3, the smoke exhaust and exhaust frames 6 are communicated with the negative pressure air duct 4 by virtue of support pipes 8, the smoke exhaust cleaning frames 7 are communicated with the negative pressure air duct 4 by virtue of nested sealing, wherein the support pipes 8 are communicated with the end parts of the smoke exhaust frames 6, and the smoke exhaust frames 4 are distributed at equal intervals and are used for communicating with smoke exhaust frames.
According to the roasting furnace disclosed by the invention, the crucible in the material channel 2 is buried by burying the refractory particles, so that the heat loss in the roasting process is reduced, the energy consumption is saved, the flame frame 3 is connected into the gas pipeline and is inserted into the flame channel 1 by means of the spray gun, the flame is pulled by the smoke removal and exhaust frame 6, and volatile substances such as asphalt and the like generated in the roasting process of the crucible are sucked and separated by means of the smoke removal and exhaust frame 6, so that the crucible is uniformly heated, and the environmental pollution is reduced.
Further, as shown in fig. 3, the screen pipe is of an inverted L-shaped structure, and comprises a separation bin 9 and a connecting pipe 10 arranged on one side of the separation bin 9, wherein the separation bin 9 is of a box-shaped structure, the connecting pipe 10 is connected to the side wall of the separation bin 9, a screen plate 11 is arranged at a port of the connecting pipe 10 extending into the separation bin 9, a reserved interface on the upper part of the separation bin 9 is in nested sealing communication with the end part of a pipeline of the cleaning smoke exhaust frame 7, and a discharging mechanism is arranged on the lower part of the separation bin 9.
When the crucible is required to be dug out after cooling is completed, the cleaning smoke discharging frame 7 is connected to the negative pressure air duct 4 by means of the connecting pipe 10, as shown in fig. 3, the manual suction pipe 5 is used for sucking refractory particles buried on the material duct 2, the refractory particles enter the pipe body of the cleaning smoke discharging frame 7 and are conveyed to the sieve tube through transportation of the pipe body, under the screening of the sieve plate 11, the refractory particles are screened out and left in the separating bin 9 and discharged out of the sieve tube through the discharging mechanism, the refractory particles impact on the pipe body of the cleaning smoke discharging frame 7 and the sieve plate 11, so that carbon ash sintered by crucible volatile matters fall off from the refractory particles and enter the negative pressure air duct 4 through the separating sieve, and the furnace area tail gas treatment process is carried out, so that the effect of cleaning the refractory particles is achieved, the influence of the carbon ash accumulation on the crucible due to heating is avoided, and the improvement of the roasting quality of the crucible is facilitated.
Further, as shown in fig. 3 and 4, the discharging mechanism includes a discharging chute 12 disposed at the lower portion of the separation bin 9, the discharging chute 12 is provided with a through chute for communicating the separation bin 9 with the outside, a discharging roller 13 driven to rotate by a motor is disposed in the through chute in a clamping manner, a groove is disposed on the discharging roller 13, and the groove contacts with a side wall of the through chute and forms a sealing fit in the process of rotating along with the discharging roller 13.
The discharging roller 13 rotates under the drive of the motor, the refractory particles separated in the separating bin 9 enter into the grooves on the discharging roller 13, the grooves are preferably contacted with the side wall of the through groove of the discharging groove 12 and sealed along with the continuous rotation of the discharging roller 13, the separating bin 9 is prevented from being directly communicated with the outside to release pressure, the discharging roller 13 continuously rotates again, the grooves are enabled to be communicated with the outside, the refractory particles carried out by the grooves fall into the trolley which is stopped below the discharging mechanism in advance, and when the refractory particles are required to be backfilled, the refractory particles are conveyed in place by the trolley.
Further, as shown in fig. 1, 2 and 6, the flame path 1 is a tubular structure formed by stacking refractory bricks and having a rectangular cross section, an auxiliary heating compartment 14 communicated with the flame path 1 is arranged at the lower side of the flame path 2, refractory bricks are respectively laid at the upper side and the lower side of the auxiliary heating compartment 14, refractory bricks placed at intervals are further arranged in the auxiliary heating compartment 14, the refractory bricks laid at the upper side and the lower side of the auxiliary heating compartment 14 are supported by the refractory bricks placed at intervals vertically to form a cavity structure, and a partition wall 15 in which the refractory bricks are arranged in a staggered and abutting manner is arranged at the middle part of the auxiliary heating compartment 14.
The auxiliary heating separation cavity 14 is adopted to increase the heat transfer area and the heat transfer efficiency between the flame path 1 and the material path 2, so that the sintering quality and the sintering efficiency of the crucible are improved, and the energy consumption and the electricity consumption are reduced; the fire paths 1 on two adjacent sides are isolated through the partition walls 15, so that the heat distribution uniformity is prevented from being influenced by bottom cross fire.
Further, as shown in fig. 2 and 3, a plurality of the suction pipes 5 are provided at equal intervals along the pipe direction of the smoke discharging frame, and the interval between the suction pipes 5 is equal to the interval between the fire paths 1. The suction pipe 5 is a telescopic corrugated pipe. The telescopic corrugated pipe is convenient to communicate the suction pipe 5 with the reserved sealing opening on the flame path 1, and meanwhile, the material path 2 with the longest distance as far as possible is convenient to suck refractory particles.
The roasting production method based on the graphite crucible roasting furnace of the invention comprises the following steps,
s1, hoisting a graphite crucible to be sintered in a material channel 2, and throwing refractory particles to bury the graphite crucible;
s2, covering sealing gaskets on the material channel 2 and the fire channel 1, wherein sealing ports with covers are arranged on the fire channel 1 at intervals, and the fire rack 3 and the smoke removal and exhaust rack 6 penetrate through the sealing gaskets and are connected with the fire channel 1 by means of the sealing ports;
s3, igniting the flame 3, and starting the smoke removing and discharging frame 6 to suck volatile substances generated in the roasting process;
s4, moving the flame 3 and the smoke removing and discharging frame 6 forwards along with the roasting progress, wherein a material cooling area is formed at the rear side of the flame 3 in the moving direction, and a cleaning and discharging frame 7 is arranged in the material cooling area;
s5, personnel extract the refractory particles in the material channel 2 by means of a suction pipe 5 for cleaning the smoke exhaust frame 7, separate the refractory particles by means of a screen pipe, take out the crucible after roasting, fill the crucible to be roasted and re-fill the crucible to be roasted by using the refractory particles to form a state to be roasted;
s6, moving the smoke removing frame 6 and the cleaning smoke removing frame 7 to one end of the furnace pit along with the fire frame 3, exchanging the support tube 8 of the smoke removing frame 6 with the screen tube of the cleaning smoke removing frame 7, so that the smoke removing frame 6 and the cleaning smoke removing frame 7 are exchanged in function, at the moment, after the roasting crucible is re-buried, the smoke removing frame, the cleaning smoke removing frame 7 and the fire frame 3 are reversely roasted to the other end of the furnace pit, and continuous production is realized.
In the step S2, the sealing pad is a felt pad, and the felt pad can be further sealed by covering a plastic film according to the leakage condition of volatile matters, and the sealing pad is protected from being burnt by the effect of isolating heat by thickening the thickness of the landfill refractory particles. Volatile matters are prevented from leaking out through the sealing gasket, and the environment protection is facilitated.
According to the invention, a production mode that the flame 3, the smoke removing and discharging frame 6 and the cleaning and discharging frame 7 move back and forth is adopted, as shown in fig. 1, in the first roasting production, the flame 3, the smoke removing and discharging frame 6 and the cleaning and discharging frame 7 move to the right side in the drawing, after reaching the right end of a furnace pit, the flame 6 and the cleaning and discharging frame 7 are exchanged by exchanging the support pipe 8 and the screen pipe, after exchange is finished, the roasting operation is carried out by moving to the left end in the drawing, the continuous carrying out of the roasting process is realized, the function exchange can be realized only by exchanging the positions of the support pipe 8 and the screen pipe with smaller volume and height, the whole exchange of the flame 3 and the smoke discharging frame is not needed, the support pipe 8 and the screen pipe are all positioned at one side of the furnace pit, the flame 3 erected on the furnace pit can be avoided in the lifting way, the lifting difficulty and the risk are avoided, and the maintenance and management are simplified.
In the step S1, refractory particles for bedding are paved before the graphite crucible to be sintered is hoisted, the refractory particles for bedding cover the bottom of the material channel 2 and isolate the bottom of the material channel 2 from contacting with the graphite crucible to be sintered. The direct impact of flame to the crucible is avoided, and the sintering quality of the crucible is improved.
Claims (5)
1. The utility model provides a graphite crucible roasting production method, includes graphite crucible roasting furnace, and graphite crucible roasting furnace is including excavating the pit below ground, be provided with multiunit flame path (1) in the pit, interval formation slot-shaped between flame path (1), be used for roasting graphite crucible's material way (2), flame frame (3) and smoke discharging frame have been set up on the pit, the spray tube of flame frame (3) inserts in flame path (1), and pit one side is provided with negative pressure wind channel (4), negative pressure wind channel (4) and smoke discharging frame intercommunication, smoke discharging frame communicates its characterized in that with flame path (1) with the help of suction tube (5): the two sides of the fire rack (3) are respectively provided with a smoke removing and discharging rack (6) and a cleaning and discharging rack (7), the smoke removing and discharging rack (6) is arranged at the front side of the fire rack (3), the cleaning and discharging rack (7) is arranged at the rear side of the fire rack (3), the smoke removing and discharging rack (6) is communicated with the negative pressure air duct (4) by virtue of a supporting pipe (8), and the cleaning and discharging rack (7) is communicated with the negative pressure air duct (4) by virtue of a screen pipe;
the sieve tube is of an inverted L-shaped structure and comprises a separation bin (9) and a connecting tube (10) arranged at one side of the separation bin (9), the separation bin (9) is of a box-shaped structure, the connecting tube (10) is connected to the side wall of the separation bin (9), a sieve plate (11) is arranged at a port, extending into the separation bin (9), of the connecting tube (10), the upper part of the separation bin (9) is communicated with a pipeline of the cleaning smoke exhaust frame (7), and a discharging mechanism is arranged at the lower part of the separation bin (9);
the discharging mechanism comprises a discharging groove (12) arranged at the lower part of the separation bin (9), the discharging groove (12) is provided with a through groove communicated with the separation bin (9) and the outside, a discharging roller (13) driven to rotate by a motor is clamped in the through groove, a groove is arranged on the discharging roller (13), and the groove is contacted with the side wall of the through groove and forms sealing fit in the process of rotating along with the discharging roller (13);
the graphite crucible roasting production method comprises the following steps,
s1, hoisting a graphite crucible to be sintered in a material channel (2), and throwing refractory particles to bury the graphite crucible;
s2, covering sealing gaskets on the material channel (2) and the fire channel (1), wherein sealing ports with covers are arranged on the fire channel (1) at intervals, and the fire frame (3) and the smoke removal and exhaust frame (6) penetrate through the sealing gaskets and are connected with the fire channel (1) through the sealing ports;
s3, igniting the flame frame (3) and starting the smoke removing and discharging frame (6) to suck volatile substances generated in the roasting process;
s4, moving the flame frame (3) and the smoke removing and discharging frame (6) forwards along with the roasting progress, wherein a material cooling area is formed at the rear side of the flame frame (3) in the moving direction, and a cleaning and discharging frame (7) is arranged in the material cooling area;
s5, personnel withdraw the refractory particles in the material channel (2) by means of a suction pipe (5) for cleaning the smoke exhaust frame (7), separate the refractory particles by means of a screen pipe, take out the crucible after roasting, fill the crucible to be roasted, and re-fill the crucible to be roasted by using the refractory particles to form a state to be roasted;
s6, moving the smoke removing frame (6) and the cleaning smoke removing frame (7) to one end of a furnace pit along with the fire frame (3), exchanging the support tube (8) of the smoke removing frame (6) with the screen tube of the cleaning smoke removing frame (7) so that the smoke removing frame (6) and the cleaning smoke removing frame (7) are functionally exchanged, and at the moment, after the crucible to be roasted is buried again, reversely roasting the smoke removing frame, the cleaning smoke removing frame (7) and the fire frame (3) to the other end of the furnace pit, thereby realizing continuous production.
2. The method for producing a graphite crucible by firing according to claim 1, wherein: the fire path (1) is a tubular structure which is formed by means of refractory brick stacking and has a rectangular section, an auxiliary heating separation cavity (14) communicated with the fire path (1) is arranged at the lower side of the material path (2), refractory bricks are respectively paved at the upper side and the lower side of the auxiliary heating separation cavity (14), refractory bricks placed at intervals are further arranged in the auxiliary heating separation cavity (14), a cavity structure is formed by means of refractory brick support placed at intervals at the upper side and the lower side of the auxiliary heating separation cavity (14), and a partition wall (15) formed by the staggered and abutted arrangement of the refractory bricks is arranged at the middle part of the auxiliary heating separation cavity (14).
3. The method for producing a graphite crucible by firing according to claim 1, wherein: the smoke exhaust frame is characterized in that a plurality of suction pipes (5) are arranged at equal intervals along the pipeline direction of the smoke exhaust frame, and the interval between the suction pipes (5) is equal to the interval between the fire channels (1).
4. The method for producing a graphite crucible by firing according to claim 1, wherein: the suction pipe (5) is a telescopic corrugated pipe.
5. The method for producing a graphite crucible by firing according to claim 1, wherein: and step S1, refractory particles for bedding are paved before the graphite crucible to be sintered is hoisted, the refractory particles for bedding cover the bottom of the material channel and isolate the bottom of the material channel from contacting the graphite crucible to be sintered.
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| CN201932712U (en) * | 2010-12-29 | 2011-08-17 | 洛阳震动机械有限公司 | Suction feeder for fillers used in roasting of carbon blocks |
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| CN106637418A (en) * | 2016-12-09 | 2017-05-10 | 河北同光晶体有限公司 | Heat treatment method for SiC gemstone |
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| CN111879133A (en) * | 2020-08-31 | 2020-11-03 | 沈阳津沃技术发展有限责任公司 | Clean carbon product roasting furnace |
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| CN201932712U (en) * | 2010-12-29 | 2011-08-17 | 洛阳震动机械有限公司 | Suction feeder for fillers used in roasting of carbon blocks |
| CN103134327A (en) * | 2011-11-22 | 2013-06-05 | 沈阳铝镁设计研究院有限公司 | Method of opening type roasting filling material filling |
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