CN103471377A - Lifting movable electrode-adjustable negative-pressure boron carbide refining furnace - Google Patents
Lifting movable electrode-adjustable negative-pressure boron carbide refining furnace Download PDFInfo
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- CN103471377A CN103471377A CN2013103899325A CN201310389932A CN103471377A CN 103471377 A CN103471377 A CN 103471377A CN 2013103899325 A CN2013103899325 A CN 2013103899325A CN 201310389932 A CN201310389932 A CN 201310389932A CN 103471377 A CN103471377 A CN 103471377A
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- boron carbide
- refining furnace
- movable electrode
- negative pressure
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Abstract
The invention discloses a lifting movable electrode-adjustable negative-pressure boron carbide refining furnace which mainly comprises a furnace body, graphite electrodes, a transformer, a hydraulic station, an exhaust device, a feeding bin, slide rails, electrode stands and a three-impeller rotation device. The lifting movable electrode-adjustable negative-pressure boron carbide refining furnace has the advantages that the refining furnace can ascend and descend vertically and can horizontally move, and the three electrodes can be synchronously adjusted; production can be carried out under a negative-pressure condition, the temperature of the inside of the furnace can be balanced, charging materials can sufficiently and consistently react, lattices are neat, the purity of products and the production efficiency can be greatly improved, and the power consumption cost and emission of dust and fume can be reduced.
Description
Technical field
The invention belongs to the smelting equipment of hot-working industry, particularly a kind of Design and implementation method of electrode adjustable negative pressure boron carbide refining furnace.
Background technology
Boron carbide, have another name called boron carbide, and molecular formula is B
4c, be generally dark gray powder.Being commonly called as diamond, is one of the hardest manufactured abrasive.Boron carbide has high-melting-point (2450 ℃), high rigidity (Mohs' hardness 9.36, Wei Shi microhardness 49Gpa), high-modulus, the little (2.52g/cm of density
3), wearability is good, the characteristics such as Acidity of Aikalinity is strong, and there is good neutron, oxygen absorbing function, the lower coefficient of expansion (5.0X10-6K-1)) and thermoelectricity capability (140s/m, room temperature), be widely used in mechanical lapping, fire-resistant, chemical industry, engineering ceramics, nuclear industry and the different field such as military, application for boron carbide as special cermacis, its scope of application also increases day by day.
China existing boron carbide factory mainly is distributed in the ground such as the Mudanjiang, Heihe, Dalian, Tongliao, Inner Mongolia, Jilin Dunhua in Heilungkiang.Dalian gold agate boron industry science and technology Group Co.,Ltd and the power-power cooperation of Mudanjiang spark boron carbide fine ceramics Co., Ltd, on market, occupation rate reaches more than 60% at home, has established the leading position of boron carbide industry, almost half export trade of existing product.
The main method of boron carbide suitability for industrialized production is carbothermic method at present, is to take carbon as reducing agent, goes back the method that ortho-boric acid or boric anhydride prepare boron carbide.When preparing boron carbide, carbothermic method usually uses electric arc furnaces.Because the arc temperature Gao,Lu district temperature difference is large.The fusing point that may surpass boron carbide in position, center temperature, make it that peritectoid occur and decompose, and separates out free carbon and other high boron compounds, and on the low side away from the center temperature, and not exclusively, residual have boric anhydride and carbon in reaction.So the general impurity content of the boron carbide made in electric arc furnaces is higher.
Summary of the invention
The present invention relates to a kind of Liftable and movable electrode adjustable negative pressure boron carbide refining furnace, can solve in the boron carbide smelting process difficult problem that reduces smelting shop contamination degree, and can improve automaticity, increase work efficiency, reduce power consumption, reduce costs, improve the quality of products.Mainly by body of heater, graphite electrode, transformer, Hydraulic Station, air exhausting device, feeding chamber, slide rail, arc-spark stand, trilobed wheel whirligig, formed, be mainly to utilize air exhausting device to make refining furnace interior in negative pressure, use angle and the position of trilobed wheel whirligig adjusted in concert graphite electrode to carry out boron carbide production.By exhaust system, make the indoor generation negative pressure of smelting furnace, make the flue dust in stove discharge furnace chamber.The trilobed wheel whirligig is swing angle and the position of the interior electrode of any regulating stove synchronously, the operation principle that electrode is adjustable is to use the graphite electrode rotarily driven on arc-spark stand of trilobed wheel to realize the swing angle conversion, thereby make the interior temperature of stove even, improve production efficiency and product quality.The trilobed wheel whirligig is comprised of motor, frequency converter, speed changer, realizes that rotary speed is adjustable continuously, thereby, according to the smelting situation, regulates pace of change and the position size of electrode.Smelt front and back, the hydraulic jack that uses Hydraulic Station to produce hydraulic drive support body of heater is realized the lifting of body of heater, guarantees that stove is interior in closed state, reduces the pollution of smelting shop flue dust.Use slide rail to realize that body of heater moves horizontally simultaneously, be convenient to the handling of furnace charge and increase work efficiency.For the ease of movement and the transposing of electrode, arc-spark stand and electrode chucking mode are to realize auto zoom and control by hydraulic tongs.In smelting process, by the coaster and the balancing weight that are connected on arc-spark stand, realize moving up and down of graphite electrode.
The accompanying drawing explanation
Fig. 1 Liftable and movable electrode adjustable negative pressure boron carbide refining furnace structural representation.Mainly by body of heater, graphite electrode, transformer, Hydraulic Station, air exhausting device, feeding chamber, slide rail, arc-spark stand, trilobed wheel whirligig, formed.
The specific embodiment
Transformer is powered to three-phase graphite electrode in body of heater by short net.Move three graphite electrodes position on the circle that distributes is that trilobed wheel whirligig by being connected with arc-spark stand is realized, the trilobed wheel whirligig is comprised of motor, speed changer and frequency converter etc., and the speed that can realize is adjustable continuously.Moving up and down of graphite electrode is to complete by being arranged on electrode reductor on arc-spark stand and screw mechanism band fly block and balancing weight, and graphite electrode chucking mode is to be realized automatic pressing to graphite electrode, put by the hydraulic tongs mode.In the body of heater top design, two forced-ventilated smoke pipelines are arranged, make down in working order the indoor generation negative pressure of smelting furnace.Lower portion of furnace body is equipped with 4 hydraulic cylinders, by Hydraulic Station, regulates the body of heater lifting moving, and its effect is the position of fire door face more than the ground basal surface that makes body of heater when the electric arc furnaces duty, prevent from discharging flue dust herein, reduce smoke contamination, and reduce the loss of heat, improve electrical efficiency.Before and after smelting, moving horizontally by slide rail of body of heater realized.Like this by oscilaltion, move horizontally, three-phase electrode synchronously the various ways such as adjustable, negative pressure produce boron carbide in refining furnace, can make temperature equalization in stove, the furnace charge sufficient reacting is consistent, lattice is regular, greatly improve product purity and production efficiency, reduce the international up-to-date state-of-the-art a kind of boron carbide refining equipment of discharge ，Shi of power consumption cost and flue dust.
Claims (7)
1. a Liftable and movable electrode adjustable negative pressure boron carbide refining furnace, mainly by body of heater, graphite electrode, transformer, Hydraulic Station, air exhausting device, feeding chamber, slide rail, arc-spark stand, trilobed wheel whirligig, formed, it is characterized in that utilizing air exhausting device to make refining furnace interior in negative pressure, use angle and the position of trilobed wheel whirligig adjusted in concert graphite electrode to carry out boron carbide production.
2. a kind of Liftable and movable electrode adjustable negative pressure boron carbide refining furnace according to claim 1, is characterized in that utilizing Hydraulic Station to produce the lifting that hydraulic jack that hydraulic drive supports body of heater is realized body of heater.
3. a kind of Liftable and movable electrode adjustable negative pressure boron carbide refining furnace according to claim 1, used slide rail to realize that body of heater moves horizontally before and after it is characterized in that smelting.
4. a kind of Liftable and movable electrode adjustable negative pressure boron carbide refining furnace according to claim 1, is characterized in that the adjustable mode of electrode is to use the synchronous swing angle conversion of graphite electrode on arc-spark stand that rotarily drives of trilobed wheel.
5. a kind of Liftable and movable electrode adjustable negative pressure boron carbide refining furnace according to claim 1, is characterized in that graphite electrode chucking mode is to realize controlling by hydraulic tongs.
6. a kind of Liftable and movable electrode adjustable negative pressure boron carbide refining furnace according to claim 1, is characterized in that electrode reductor and the screw mechanism band fly block by being connected on arc-spark stand realized moving up and down of graphite electrode.
7. a kind of Liftable and movable electrode adjustable negative pressure boron carbide refining furnace according to claim 1, is characterized in that the trilobed wheel whirligig is comprised of motor, frequency converter, speed changer, realizes that rotary speed is adjustable continuously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103899325A CN103471377A (en) | 2013-08-28 | 2013-08-28 | Lifting movable electrode-adjustable negative-pressure boron carbide refining furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103899325A CN103471377A (en) | 2013-08-28 | 2013-08-28 | Lifting movable electrode-adjustable negative-pressure boron carbide refining furnace |
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| CN103471377A true CN103471377A (en) | 2013-12-25 |
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| CN2013103899325A Pending CN103471377A (en) | 2013-08-28 | 2013-08-28 | Lifting movable electrode-adjustable negative-pressure boron carbide refining furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109956474A (en) * | 2017-12-23 | 2019-07-02 | 大连天宏硼业有限公司 | Boron carbide smelting temperature control system and its control method |
Citations (7)
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|---|---|---|---|---|
| CN1045642A (en) * | 1989-03-02 | 1990-09-26 | 福克斯技术公司 | The smelting apparatus of the reinforced preheating furnace of band cupola-type |
| JPH04184086A (en) * | 1990-11-15 | 1992-07-01 | Nippon Steel Corp | Furnace body supporting structure for electric furnace |
| CN1131197A (en) * | 1994-11-05 | 1996-09-18 | 大同特殊钢株式会社 | D.C. electric-arc furnace |
| US6801563B2 (en) * | 2001-11-07 | 2004-10-05 | Sms Demag, Inc. | Apparatus to manipulate scrap in a scrap charger |
| CN2867239Y (en) * | 2005-12-22 | 2007-02-07 | 佟玉鹏 | Electric smelting magnesium furnace capable of adjusting electrode spacing guiding post |
| CN102706135A (en) * | 2012-06-20 | 2012-10-03 | 柳州市金螺机械有限责任公司 | Ore smelting furnace |
| CN203824296U (en) * | 2013-08-28 | 2014-09-10 | 锦州晶鑫冶金设备科技有限公司 | Elevating boron carbide finery with adjustable negative pressure of electrode |
-
2013
- 2013-08-28 CN CN2013103899325A patent/CN103471377A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1045642A (en) * | 1989-03-02 | 1990-09-26 | 福克斯技术公司 | The smelting apparatus of the reinforced preheating furnace of band cupola-type |
| JPH04184086A (en) * | 1990-11-15 | 1992-07-01 | Nippon Steel Corp | Furnace body supporting structure for electric furnace |
| CN1131197A (en) * | 1994-11-05 | 1996-09-18 | 大同特殊钢株式会社 | D.C. electric-arc furnace |
| US6801563B2 (en) * | 2001-11-07 | 2004-10-05 | Sms Demag, Inc. | Apparatus to manipulate scrap in a scrap charger |
| CN2867239Y (en) * | 2005-12-22 | 2007-02-07 | 佟玉鹏 | Electric smelting magnesium furnace capable of adjusting electrode spacing guiding post |
| CN102706135A (en) * | 2012-06-20 | 2012-10-03 | 柳州市金螺机械有限责任公司 | Ore smelting furnace |
| CN203824296U (en) * | 2013-08-28 | 2014-09-10 | 锦州晶鑫冶金设备科技有限公司 | Elevating boron carbide finery with adjustable negative pressure of electrode |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109956474A (en) * | 2017-12-23 | 2019-07-02 | 大连天宏硼业有限公司 | Boron carbide smelting temperature control system and its control method |
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Application publication date: 20131225 |
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