CN109956474A - Boron carbide smelting temperature control system and its control method - Google Patents
Boron carbide smelting temperature control system and its control method Download PDFInfo
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- CN109956474A CN109956474A CN201711412095.8A CN201711412095A CN109956474A CN 109956474 A CN109956474 A CN 109956474A CN 201711412095 A CN201711412095 A CN 201711412095A CN 109956474 A CN109956474 A CN 109956474A
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- electric arc
- arc furnaces
- boron carbide
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- temperature control
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Abstract
The invention belongs to a kind of boron carbide smelting temperature control systems, including electric arc furnaces (1), it is characterised in that in the side of electric arc furnaces (1) wall, there are two thermometric carbon pipes (3) for dress；Thermometric carbon pipe (3) is equipped with argon inlet hole (4), is connected to the gas outlet of argon bottle (5)；The open end of thermometric carbon pipe (3) communicates with argon gas and is equipped with infrared radiation thermometer (6), and the control method of boron carbide smelting temperature control system is to take following steps: a, by 3 root graphite electrodes (2) it is vertical uniform be inserted into the intracavitary of electric arc furnaces (1)；B, to the intracavitary dress boron carbide raw materials for metallurgy of electric arc furnaces (1)；C, start electric arc furnaces (1).The invention is accurately controlled the smelting temperature of electric arc furnaces, solves burning, raw burn, not exclusively, the low problem of yield rate improves the quality of product, reduces production cost for reaction.
Description
Technical field
The invention belongs to smelting temperature control system and its method, in particular to a kind of boron carbide smelting temperature control system
And its control method.
Background technique
Boron carbide has the excellent properties such as density is low, modulus is high, superhard, wear resistant corrosion resistant, chemical stability are good, existing own quilt
It is widely used in industrial cutting and grinding tool both at home and abroad, and its dosage is being continuously increased always.In recent years, with LED for main device
The civilian semiconductor lighting industry of part has obtained development at full speed, and substrate does using sapphire in current 80% LED enterprise.?
While LED is to sapphire demand growth, military project window and device, the demand to sapphire wafer such as smart phone market is also in
Reveal the trend of steady-state growth.And boron carbide is as the main grinding materials in sapphire wafer production field, annual output pair
Supply falls short of demand for sapphire industry.
The smelting process of boron carbide is to prepare the important link of high-quality boron carbide.The process for smelting boron carbide is one multiple
Miscellaneous oxidation-reduction process, smelting principle are in certain temperature section, to obtain carbon by carbon reduction diboron trioxide using electric furnace
Change boron.Traditional boron carbide smelting process is directly to throw furnace smelting after mixing using the boric acid and carbon materials of powdery, in recent years,
In some improved smelting processes, powder material is combined into bulky grain, increases balling-up process, pellet feed is thrown into furnace smelting
Refining.
Either above-mentioned traditional smelting process still improves technique, and reaction process is gaseous diboron trioxide and consolidates
The carbon materials of state react namely the smelting process is gas-solid reaction process, and therefore, in-furnace temperature is to influence product
An important factor for boron carbide grade.If temperature is excessively high, it may appear that burning, partially carbonized boron product can also decompose；If temperature
It is too low, it may appear that raw burn, not exclusively, yield rate is low for reaction.Therefore, in order to improve the quality of boron carbide product, reduction is produced into
How this, control in-furnace temperature, become those skilled in the art's technical problem urgently to be resolved.
Summary of the invention
It is an object of the invention to overcome above-mentioned technical deficiency, a kind of installation thermometric carbon on the wall of electric arc furnaces side is provided
Pipe and infrared radiation thermometer, are accurately controlled the boron carbide smelting temperature control system and its control method of smelting temperature.
Present invention technical solution used by technical problem of determining is: a kind of boron carbide smelting temperature control system, including electricity
Arc furnace and electrode electric lifting system, it is intracavitary equipped with more root graphite electrodes, graphite electrode upper end motor holder in electric arc furnaces
It is connected with each other, and is connected to rise fall of electrodes conducting wire with controller, controller is connected to temperature control connecting wire with temperature display meter；
It is characterized in that there are two thermometric carbon pipes for the side dress in electric arc furnace wall；Thermometric carbon pipe is equipped with argon inlet hole, argon inlet
Hole is connected to argon gas pipeline with the gas outlet of argon bottle；Thermometric carbon duct occlusion end is inserted in the intracavitary of electric arc furnaces, and thermometric carbon pipe is opened
Mouth end communicates with argon gas and is equipped with infrared radiation thermometer, and infrared radiation thermometer is connected to temperature control connecting wire with temperature display meter, shows
Show in-furnace temperature；Controller conducting wire is connected to electrode electric lifting system.
The thermometric carbon bore is 5mm ~ 10mm, and outer diameter is 25mm ~ 40mm；The center line of thermometric carbon pipe and pipeline
Centerlines are α, α=20 ~ 40 °.
The control method of boron carbide smelting temperature control system is to take following steps:
A, by three root graphite electrodes it is vertical uniform be inserted into the intracavitary of electric arc furnaces；The inner wall of electric arc furnaces is at a distance from graphite electrode
The distance of H1, adjacent two root graphite electrode are similarly H1, H1=200-400mm；
B, to the intracavitary dress boron carbide raw materials for metallurgy of electric arc furnaces, the height of raw material is H, H=25cm ~ 35mm；In the height H of raw material
Between load onto two thermometric carbon pipes, between two thermometric carbon pipes distance be H2, H2=20mm；
C, start electric arc furnaces, start to smelt, open the valve of argon bottle at this time, by pipeline and stomata to the intracavitary of thermometric carbon pipe
Applying argon gas；When forming boron carbide in place of the furnace bottom 15cm or more of electric arc furnaces, by the temperature of graphite electrode and infrared radiation thermometer survey
It is shown in temperature display meter, when displays temperature is up to 1900 DEG C, by the electrical current of electric arc furnaces by the computer in controller
The program software of storage medium adjusts electrode electric lifting system, and electrical current is controlled in 6500A；When boron carbide block increase to away from
Temperature display meter shows 2200 DEG C when from furnace bottom 20cm, at this time controls the electrical current of electric arc furnaces in 6000A；Work as boron carbide
When block is increased to apart from furnace bottom 30cm, temperature display meter shows 2000 DEG C, and the electrical current control of electric arc furnaces exists at this time
5800A；By electric arc furnace power-off after 30 minutes, in-furnace temperature is cooled to 400 DEG C of products and comes out of the stove.
The beneficial effects of the present invention are: the invention is accurately controlled the smelting temperature of electric arc furnaces, solve burning, raw burn,
Not exclusively, the low problem of yield rate improves the quality of product, reduces production cost for reaction.
Detailed description of the invention
Below in conjunction with attached drawing, illustrated with embodiment.
Fig. 1 is boron carbide smelting temperature control system schematic illustration.
In figure: 1- electric arc furnaces；2- graphite electrode；3- thermometric carbon pipe；4 argon inlet holes；5- argon bottle；6- infrared measurement of temperature
Instrument；7- temperature display meter；8- controller；9- rise fall of electrodes conducting wire；10- argon gas pipeline；11- temperature control connecting wire；12- electrode
Holder；13- electrode electric lifting system；14- conducting wire.
Specific embodiment
Embodiment, referring to attached drawing, a kind of boron carbide smelting temperature control system, including electric arc furnaces 1 and electrode electric up-down
System 13, intracavitary equipped with more root graphite electrodes 2 in electric arc furnaces 1,2 upper end of graphite electrode is connected with each other with electrode holde 12, and
It is connected to rise fall of electrodes conducting wire 9 with controller 8, the temperature control connecting wire 11 of controller 8 is connected to temperature display meter 7；It is special
Sign is that there are two thermometric carbon pipes 3 in the side of 1 wall of electric arc furnaces dress；Thermometric carbon pipe 3 is equipped with argon inlet hole 4, argon inlet
The argon gas pipeline 10 of hole 4 is connected to the gas outlet of argon bottle 5；3 closed end of thermometric carbon pipe is inserted in the intracavitary of electric arc furnaces 1, thermometric carbon
The open end of pipe 3 communicates with argon gas and is equipped with infrared radiation thermometer 6, infrared radiation thermometer 6 temperature control connecting wire 11 and temperature display
Instrument 7 is connected to, and shows in-furnace temperature；The conducting wire 14 of controller 8 is connected to electrode electric lifting system 13.
3 internal diameter of thermometric carbon pipe is 7mm, outer diameter 35mm；The center line of thermometric carbon pipe 3 and the center line of pipeline 10
Angle is α, α=30 °.
The control method of boron carbide smelting temperature control system is that feature takes following steps:
A, by 3 root graphite electrodes 2 it is vertical uniform be inserted into the intracavitary of electric arc furnaces 1；The inner wall of electric arc furnaces 1 and graphite electrode 2 away from
H1, H1=200-400mm are similarly from the distance for H1, adjacent two root graphite electrode 2；
B, to the intracavitary dress boron carbide raw materials for metallurgy of electric arc furnaces 1, the height of raw material is H, H=25cm ~ 35mm；In the height H of raw material
Between load onto two thermometric carbon pipes 3, between two thermometric carbon pipes 3 distance be H2, H2=20mm；
C, start electric arc furnaces 1, start to smelt, open the valve of argon bottle 5 at this time, pass through argon gas pipeline 10 and argon inlet hole 4
To the intracavitary applying argon gas of thermometric carbon pipe 3；When forming boron carbide in place of the furnace bottom 15cm or more of electric arc furnaces 1, by 2 He of graphite electrode
The temperature that infrared radiation thermometer 6 is surveyed is shown in temperature display meter 7, when displays temperature is up to 1900 DEG C, by the energization electricity of electric arc furnaces 1
Stream adjusts electrode electric lifting system 13 by the program software of the computer storage medium in controller 8, and electrical current is controlled
In 6500A；When boron carbide block is increased to apart from furnace bottom 20cm, temperature display meter 7 shows 2200 DEG C, at this time by the logical of electric arc furnaces 1
Electric current control is in 6000A；When boron carbide block is increased to apart from furnace bottom 30cm, temperature display meter 7 shows 2000 DEG C, at this time will
The electrical current of electric arc furnaces 1 is controlled in 5800A；Electric arc furnaces 1 is powered off after 30 minutes, in-furnace temperature is cooled to 400 DEG C of products and goes out
Furnace.
It can be switched to 3 top carbon pipe of thermometric carbon pipe if continuing to smelt, when displays temperature is up to 1900 DEG C, by electric arc furnaces 1
Electrical current by the computer storage medium in controller 8 program software adjust electrode electric lifting system 13, will be powered
Current control is in 6500A；When boron carbide block is increased to apart from furnace bottom 40cm, temperature display meter 7 shows 2200 DEG C, at this time will be electric
The electrical current of arc furnace 1 is controlled in 6000A；When boron carbide block is increased to apart from furnace bottom 45cm, the display of temperature display meter 7 2000
DEG C, the electrical current of electric arc furnaces 1 is controlled in 5800A at this time.
It is equipped with computer storage medium in the controller 8 that the invention is arranged in systems, is stored with program, which executes
When include temprature control method and whole temperature controlled steps in the boron carbide smelting process provided.The medium can
For magnetic disk, CD, read-only memory (read-onlymemory), or random access memory (random access
Memory).
Claims (3)
1. a kind of boron carbide smelting temperature control system, including electric arc furnaces (1) and electrode electric lifting system (13), in electric arc furnaces
(1) intracavitary that more root graphite electrodes (2) are housed, graphite electrode (2) upper end is connected with each other with electrode holde (12) and with electrode liter
Drop conducting wire (9) is connected to controller (8), and controller (8) is connected to temperature control connecting wire (11) with temperature display meter (7)；Its
It is characterized in that there are two thermometric carbon pipes (3) in the side of electric arc furnaces (1) wall dress；Thermometric carbon pipe (3) is equipped with argon inlet hole
(4), argon inlet hole (4) are connected to argon gas pipeline (10) with the gas outlet of argon bottle (5)；Thermometric carbon pipe (3) closed end is inserted in
Electric arc furnaces (1) it is intracavitary, the open end of thermometric carbon pipe (3) communicates with argon gas and infrared radiation thermometer (6), infrared radiation thermometer is housed
(6) it is connected to temperature control connecting wire (11) with temperature display meter (7), shows in-furnace temperature；Controller (8) with conducting wire (14) with
Electrode electric lifting system (13) connection.
2. boron carbide smelting temperature control system according to claim 1, it is characterised in that thermometric carbon pipe (3) internal diameter is
5mm ~ 10mm, outer diameter are 25mm ~ 40mm；The center line of thermometric carbon pipe (3) and the centerlines of pipeline (10) are α, α=20 ~
40°。
3. the control method of boron carbide smelting temperature control system according to claim 1, it is characterised in that boron carbide smelting
The control method for refining temperature control system is to take following steps:
A, by 3 root graphite electrodes (2) it is vertical uniform be inserted into the intracavitary of electric arc furnaces (1)；The inner wall and graphite electrode of electric arc furnaces (1)
(2) distance is H1, and the distance of adjacent two root graphite electrode (2) is similarly H1, H1=200-400mm；
B, to the intracavitary dress boron carbide raw materials for metallurgy of electric arc furnaces (1), the height of raw material is H, H=25cm ~ 35mm；In the height H of raw material
Two thermometric carbon pipes (3) are loaded onto centre, and distance is H2, H2=20mm between two thermometric carbon pipes (3)；
C, start electric arc furnaces (1), start to smelt, open the valve of argon bottle (5) at this time, by argon gas pipeline (10) and argon gas into
Intracavitary applying argon gas of the stomata (4) to thermometric carbon pipe (3)；When forming boron carbide in place of the furnace bottom 15cm or more of electric arc furnaces (1), by
The temperature that graphite electrode (2) and infrared radiation thermometer (6) are surveyed shows in temperature display meter (7), when displays temperature is up to 1900 DEG C,
The electrical current of electric arc furnaces (1) is adjusted into electrode electric up-down by the program software of the computer storage medium in controller (8)
System (13) controls electrical current in 6500A；When boron carbide block is increased to apart from furnace bottom 20cm, temperature display meter (7) is aobvious
Show 2200 DEG C, at this time controls the electrical current of electric arc furnaces (1) in 6000A；When boron carbide block is increased to apart from furnace bottom 30cm, temperature
It spends display instrument (7) and shows 2000 DEG C, at this time control the electrical current of electric arc furnaces (1) in 5800A；By electric arc furnaces after 30 minutes
(1) it powers off, in-furnace temperature is cooled to 400 DEG C of products and comes out of the stove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711412095.8A CN109956474A (en) | 2017-12-23 | 2017-12-23 | Boron carbide smelting temperature control system and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711412095.8A CN109956474A (en) | 2017-12-23 | 2017-12-23 | Boron carbide smelting temperature control system and its control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109956474A true CN109956474A (en) | 2019-07-02 |
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ID=67020163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711412095.8A Pending CN109956474A (en) | 2017-12-23 | 2017-12-23 | Boron carbide smelting temperature control system and its control method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101074097A (en) * | 2006-05-15 | 2007-11-21 | 润鸣新素材(通辽)有限公司 | Method for smelting boron carbide and adjusting electric smelting furnace |
| CN202993885U (en) * | 2012-12-05 | 2013-06-12 | 株洲湘火炬火花塞有限责任公司 | Temperature measuring device of silicon carbide pressureless sintering kiln |
| CN103471377A (en) * | 2013-08-28 | 2013-12-25 | 锦州晶鑫冶金设备科技有限公司 | Lifting movable electrode-adjustable negative-pressure boron carbide refining furnace |
| CN106524747A (en) * | 2016-11-10 | 2017-03-22 | 黑河正兴磨料有限公司 | Closed electrode-circle-fixed electric arc furnace for boron carbide smelting |
| CN106829966A (en) * | 2017-04-12 | 2017-06-13 | 郑州嵩山硼业科技有限公司 | It is a kind of equipped with the boron carbide smelting furnace for being automatically brought into operation cabinet |
-
2017
- 2017-12-23 CN CN201711412095.8A patent/CN109956474A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101074097A (en) * | 2006-05-15 | 2007-11-21 | 润鸣新素材(通辽)有限公司 | Method for smelting boron carbide and adjusting electric smelting furnace |
| CN202993885U (en) * | 2012-12-05 | 2013-06-12 | 株洲湘火炬火花塞有限责任公司 | Temperature measuring device of silicon carbide pressureless sintering kiln |
| CN103471377A (en) * | 2013-08-28 | 2013-12-25 | 锦州晶鑫冶金设备科技有限公司 | Lifting movable electrode-adjustable negative-pressure boron carbide refining furnace |
| CN106524747A (en) * | 2016-11-10 | 2017-03-22 | 黑河正兴磨料有限公司 | Closed electrode-circle-fixed electric arc furnace for boron carbide smelting |
| CN106829966A (en) * | 2017-04-12 | 2017-06-13 | 郑州嵩山硼业科技有限公司 | It is a kind of equipped with the boron carbide smelting furnace for being automatically brought into operation cabinet |
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Application publication date: 20190702 |