CN101776395A - Electric furnace charging and preheating device - Google Patents
Electric furnace charging and preheating device Download PDFInfo
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- CN101776395A CN101776395A CN201010104360A CN201010104360A CN101776395A CN 101776395 A CN101776395 A CN 101776395A CN 201010104360 A CN201010104360 A CN 201010104360A CN 201010104360 A CN201010104360 A CN 201010104360A CN 101776395 A CN101776395 A CN 101776395A
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Abstract
The invention belongs to the technical field of metallurgy, and discloses an electric furnace charging and preheating device, comprising a steel scrap conveying chute (1) which is arranged aslant with the horizontal plane; the high end of the steel scrap conveying chute (1) is provided with an inclined pull-type material receiving conveyor (B), and the low end of the steel scrap conveying chute (1) extends into an electric furnace (A) from a pore on the side wall of the electric furnace (A); the upper part of the steel scrap conveying chute (1) is provided with a seal cover which forms a steel scrap and smoke path with the steel scrap conveying chute (1). The electric furnace charging and preheating device of the invention has the advantages of small electric energy consumption, small equipment abrasion, large steel scrap conveying amount and small total length of equipment and is a new energy-saving and environment-protection technology with promotional value in electric furnaces or other production processes.
Description
Technical field
The invention belongs to metallurgical technology field, disclose a kind of electric furnace charging and preheating device, particularly a kind of waste steel for electric furnace skewed slot and towed material conveyer combined type continuous charging and the preheating device of being subjected to.
Background technology
A kind of important method for making steel of electric furnace steel making, it can consume a large amount of electric energy by arc-melting steel scrap metal in smelting process.Waste steel for electric furnace continuous charging and preheating technology are the important subitem technology of of electric furnace steel making, it can be saved electric energy in a large number and reduce flue-gas temperature and dust discharge amount wherein, and can stablize the electric arc smelting of electric furnace and reduce the noise of electric furnace work, be a kind of energy-conserving and environment-protective new technology.Popular in the world foreign technology mainly is based on shaft furnace technical development COSS technology of getting up and the CONSTEEL technology of vibrating continuous charging at present, the COSS technology has the good technical index, but the development foundation based on the electric furnace shaft furnace makes the furnace equipment height strengthen, factory building is increased, feed way is interrupted reinforced, also there are environmental protection treatment problems such as dioxin in addition, are tending towards stagnating so it is promoted the use of.And based on the vibration continuous charging the CONSTEEL technology be a kind of horizontal continuous-feeding technology, can realize the smelting of electric furnace stabilising arc, environmental protection and consumption of electrode reduce, can reduce the production process expense of electric furnace greatly, but this mode has only upper materials to be heated owing to steel scrap, so the steel scrap pre-heat effect is not good, and because vibrating feed has the high temperature that a large amount of moving components is added flue gas, the plant maintenance amount of this system is bigger, and Mechanical Reliability is relatively low.
Summary of the invention
The object of the present invention is to provide a kind of equipment attrition electric furnace charging and preheating device little, just local vibration convey materials.This device has adopted shimmy skewed slot and the towed material conveyer compound mode that is subjected to, make full use of transportation characteristics separately, compare with the full level of vibration conveying technology of CONSTEEL, steel scrap conveying principle difference, utilized different transmission of coefficient of friction that material (steel scrap) is downward with the skewed slot bottom surface and make progress, identical exciting force device before and after can adopting this moment.Adopted oblique towed material feeding conveyor mechanism for remedying height space, this system equipment vibration is little, the mass transport amount is big, the little maintenance of the wearing and tearing of equipment reduces, and power of motor consumption reduces in material conveying process, owing to towedly be subjected to material conveyer tiltable and crooked the conveying, help improving magnetic disc suspending or other hanging device operating rate to the steel scrap lifting.
The present invention realizes in the following way:
A kind of electric furnace charging and preheating device, comprise the steel scrap conveying skewed slot that is obliquely installed with horizontal plane, described steel scrap carries that skewed slot is high-end to be provided with the towed material conveyer that is subjected to, low side stretches into electric furnace by the side-wall hole of electric furnace, it is characterized in that: described steel scrap is carried the skewed slot below to be provided with described steel scrap and is carried skewed slot top to be provided with seal closure, carry skewed slot to constitute steel scrap and exhaust gases passes with steel scrap.
Described steel scrap carries skewed slot below or two sides to be provided with the horizontal exciting force device that steel scrap conveying skewed slot is carried out exciting.
The described towed material conveyer that is subjected to is subjected to material conveyer or oblique rail dolly material feeding machine for the plate chain, and being obliquely installed the angle of inclination with horizontal plane is 0 ° ~ 50 °, and carries skewed slot to become the inverted V-shaped setting with steel scrap.
Steel scrap is loaded onto the towed material conveyer that is subjected to by magnetic disc suspending (or other hanging device), for guaranteeing reinforced mass flow, the towed material conveyer that is subjected to will have enough length, in addition for improving the operating rate of magnetic disc suspending, towedly installed to reduce the magnetic disc suspending hoisting depth by the material conveyer tiltable.The towed material conveyer that is subjected to delivers into the high-end of steel scrap conveying skewed slot with steel scrap, steel scrap conveying skewed slot bottom land and horizontal plane inclination certain angle (3 °～20 °, or 30 °～90 °).
Steel scrap carries skewed slot to be hung naturally on support by suspension rod, and steel scrap carries the skewed slot bottom to stretch into electric furnace.
Because steel scrap carries skewed slot to tilt, horizontal exciting force device can adopt the horizontal exciting device of twin shaft conjugation, also can adopt the horizontal exciting force device of four of conjugation or six couplings of conjugation, and the horizontal exciting device of twin shaft conjugation is simpler, and is in light weight, should preferentially adopt.
Steel scrap carries skewed slot to form by going into stove section skewed slot, preheating section skewed slot, exhausting material feeding section skewed slot, and every section skewed slot is equipped with horizontal exciting force device, is going into first seal closure, second seal closure are arranged on stove section skewed slot and the preheating section skewed slot formation flue gas duct; On exhausting material feeding section skewed slot, exhausting sealing gland cover is arranged, constitute windrow sealing duct and material feeding guide groove.
Carry the windrow sealing duct front portion between the skewed slot inlet that plate-turning door is set at bleeding point and steel scrap.
The bottom of going into stove section skewed slot, preheating section skewed slot, exhausting material feeding section skewed slot is separately installed with the first horizontal exciting force device, the second horizontal exciting force device, the 3rd horizontal exciting force device.
Steel scrap is transfused to the sealing gland section and carries skewed slot, it is mobile to hanging down by height that exhausting material feeding section skewed slot is subjected to horizontal exciting force device to drive the shimmy steel scrap that makes, rear portion in exhausting material feeding section skewed slot, because the skewed slot inclination angle is bigger, the speed that steel scrap moves forward when cell body is swung is very fast, steel scrap seals duct by material feeding guide groove fast moving to windrow, and at the inner steel scrap of piling with inlet of windrow sealing duct, can prevent or substantially minimize air like this and be inhaled into bleeding point through windrow sealing duct.
When not having steel scrap or steel scrap seldom in the windrow sealing duct, plate-turning door is closed certain angle or is closed fully and can effectively reduce the air that is inhaled into.
Be to improve sealing effectiveness and dust removing effects, also can on windrow seals seal closure on the duct, open a bleeding point.
Steel scrap enters the preheating section skewed slot, and the preheating section skewed slot is moved into into stove section skewed slot to low by height by the shimmy steel scrap that makes of the second horizontal exciting force device driving, goes into stove section skewed slot and is subjected to the shimmy steel scrap that makes of the first horizontal exciting force device driving to enter electric furnace.
Flue gas in the electric furnace is extracted out from bleeding point by the flue gas duct of going into stove section skewed slot and preheating section skewed slot and first seal closure, second seal closure formation; Flue gas and steel scrap are in this zone heat exchange, and the burner of installing on first seal closure and/or second seal closure also can heat steel scrap.
It is different with CONSTEEL on conveying principle that steel scrap of the present invention carries skewed slot to carry, utilized different transmission of equivalent coefficient of friction (the identical inertia force that material (steel scrap) is downward with the bottom land inclined-plane and make progress, different motion friction), and horizontal CONSTEEL conveying can only utilize front and back acceleration (identical motion friction, different front and back inertia force) difference realizes mass transport, when steel scrap carries skewed slot to carry, material (steel scrap) is little to the pressure of bottom land when mobile, even at the bottom of can releasing slots, this has reduced material (steel scrap) on the one hand steel scrap is carried the wearing and tearing of skewed slot and reduced material (steel scrap) transmission power, simplify vibration source mechanism, also helped the heat exchange of flue gas and material (steel scrap) on the other hand.
The present invention has adopted shimmy conveying of the skewed slot that is inverted v-shaped and the towed material conveyer compound mode that is subjected to, solved the spatial altitude problem dexterously, and make full use of skewed slot and carry the high temperature resistant preheating section of doing, skewed slot can bear 1200 ℃ fume high-temperature, the towed high efficiency oblique ascension that is subjected to material conveyer is carried and is made the material feeding section, constituted one group of high-transmission efficient, the combined system of continuous conveying of low equipment attrition steel scrap and preheating.
The shimmy conveying of skewed slot has cell body and the wearing and tearing of steel scrap material are little, and material is fed forward the little characteristics of process frictional force, it is compared with the CONSTEEL technology have little driving power and less equipment maintenance; The towed material conveyer that is subjected to provides enough material feeding length, make hanging device (magnetic disc suspending or other vehicle arrangement etc.) carry skewed slot the big steel scrap flow of electric furnace needs is provided for steel scrap, and its inclination conveying capacity has compensated the height of steel scrap conveying skewed slot in the space perk, total length simultaneously of the present invention is short, has saved the space.The energy consumption that the plate chain is had by material conveyer to be similar to belt to carry is more saved the driving electric energy than CONSTEEL technically.The present invention is a kind of brand-new steel scrap or metalliferous material to the continuous charging of electric furnace and utilizes the discarded flue gas of high temperature to carry out technology to the preheating of material, having the production cost of energy-saving and environmental protection, reduction electric furnace smelting, is a kind of energy-conserving and environment-protective new technology that has promotional value on electric furnace.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention 1;
Fig. 2 is the structural representation of the embodiment of the invention 2.
Among the figure, part 1 for steel scrap carry skewed slot, wherein part 1a for go into stove section skewed slot, part 1b is that preheating section skewed slot, part 1c are exhausting material feeding section skewed slot, part 2 is a suspension rod, part 3 is a support, part 4a is that first seal closure, part 4b are second seal closure, part 5 is an exhausting sealing gland cover, wherein part 5a is that plate-turning door, part 5c are that windrow sealing duct, part 5d are the material feeding guide groove for formation bleeding point, part 5b, part 6a is that the first horizontal exciting force device, part 6b are that the second horizontal exciting force device, part 6c are the 3rd horizontal exciting force device, and part 7 is a burner.
Part A is that electric furnace, part B are that towed material conveyer, the part C of being subjected to is that magnetic disc suspending, part D are that steel scrap, part E are flue gas.
The specific embodiment
Below in conjunction with accompanying drawing specific embodiments of the invention are described further:
Embodiment 1: as shown in Figure 1:
Steel scrap D loads onto the plate chain by magnetic disc suspending C (or miscellaneous equipment) and is subjected to material conveyer, for guaranteeing reinforced mass flow, the plate chain is subjected to material conveyer that enough length will be arranged, in addition for improving the operating rate of magnetic disc suspending C, the plate chain installs to reduce the magnetic disc suspending hoisting depth by the material conveyer tiltable, also increased the feed length that the plate chain is subjected to material conveyer simultaneously.Certainly the plate chain is subjected to the material conveyer also can crooked setting, so also can increase feed length.The plate chain is subjected to material conveyer that steel scrap D is delivered into steel scrap and carries the high-end of skewed slot 1, steel scrap carries skewed slot bottom land 1 and horizontal plane to tilt about 10 °, the plate chain is subjected to material conveyer, and being obliquely installed the angle of inclination with horizontal plane is 15 °, and carries 1 one-tenth inverted V-shaped setting of skewed slot with steel scrap.The plate chain is generally adjusted in 0 ° ~ 30 ° by the angle of inclination of material conveyer.
Steel scrap carries skewed slot 1 to be hung naturally on support 3 by suspension rod 2, and steel scrap carries the bottom of skewed slot 1 to stretch into electric furnace A.Certainly the inclination number of degrees of steel scrap conveying skewed slot bottom land 1 and horizontal plane can be for requiring and can select in 3 ° ~ 20 ° according to different transporting velocities, in the material feeding section is to make steel scrap block the feeding mouth of material feeding guide groove 5d fast, improve sealing, and prevent that material or steel scrap from dropping out from the rear portion, can select the inclination angle is 30 ° ~ 90 °.In general the inclination angle is big, and material easily travels forward, and meeting natural downslide when greater than the material angle of friction can be used during the design of inclination angle.
Steel scrap carry skewed slot 1 by go into stove section skewed slot 1a, preheating section skewed slot 1b, exhausting material feeding section skewed slot 1c forms, every section skewed slot is hung on support 3 naturally by suspension rod 2, every section skewed slot bottom is separately installed with the first horizontal exciting force device 6a, the second horizontal exciting force device 6b, the 3rd horizontal exciting force device 6c, going into the first seal closure 4a, the second seal closure 4b are arranged on stove section skewed slot 1a and the preheating section skewed slot 1b, constituting the flue gas duct; On exhausting material feeding section skewed slot 1c exhausting sealing gland cover 5 is arranged, constitute bleeding point 5a, windrow sealing duct 5c and material feeding guide groove 5d, windrow sealing duct 5c front portion is equipped with plate-turning door 5b.Steel scrap D is transfused to exhausting material feeding section and carries skewed slot 1c, exhausting material feeding section is carried skewed slot 1c to be subjected to the 3rd horizontal exciting force device 6c to drive the shimmy steel scrap D that makes and is moved to low by height, in exhausting material feeding section skewed slot 1c, steel scrap D seals duct 5c by material feeding guide groove 5d fast moving to windrow, be deposited in the steel scrap that windrow sealing duct 5c is inner and enter the mouth, can prevent or substantially minimize air and be inhaled into bleeding point 5a, when not having steel scrap D or steel scrap D seldom in the windrow sealing duct 5c, plate-turning door 5b closes or closes certain angle fully, can effectively reduce the cold air that is inhaled into.
Steel scrap D enters preheating section skewed slot 1b, preheating section skewed slot 1b is moved into into stove section skewed slot 1a to low by height by the shimmy steel scrap D that makes of the second horizontal exciting force device 6b driving, goes into stove section skewed slot 1a and is subjected to the shimmy steel scrap D that makes of the first horizontal exciting force device 6a driving to enter electric furnace A;
Flue gas E in the electric furnace A extracts out from bleeding point 5a by the flue gas duct of going into stove section skewed slot 1a and preheating section skewed slot 1b and the first seal closure 4a, second seal closure 4b formation; Flue gas E and steel scrap D are in this zone heat exchange, and burner 7 also can heat steel scrap D.
Preheating section skewed slot and exhausting material feeding section skewed slot can be connected into one in force, will notice that corresponding horizontal exciting force device vibration frequency wants consistent this moment, at work can motor synchronizing, also both horizontal exciting force devices can be integrated in addition.And go into stove section skewed slot because near the electric furnace high-temperature area, maintenance is big, should be able to change fast.We's chopping board chain is subjected to the material conveyer amount of sending bigger, is suitable for medium-and-large-sized electric furnace.
Embodiment 2: part B is oblique rail dolly material feeding machine as different from Example 1, and the angle of inclination can be bigger, and the oblique rail cart transport of this programme amount is less, is suitable for electric rangette.
Steel scrap of the present invention is carried skewed slot and the towed course of conveying to the V font that is subjected to material conveyer to form steel scrap, and very similar skiing process is SKISTEEL so this system has another name called.
Claims (12)
1. electric furnace charging and preheating device, comprise the steel scrap conveying skewed slot (1) that is obliquely installed with horizontal plane, described steel scrap is carried the high-end towed material conveyer (B) that is subjected to that is provided with inclination of skewed slot (1), low side stretches into electric furnace (A) by the side-wall hole of electric furnace (A), it is characterized in that: described steel scrap carries skewed slot (1) top to be provided with seal closure, carries skewed slot (1) to constitute steel scrap and exhaust gases passes with steel scrap.
2. electric furnace charging as claimed in claim 1 and preheating device is characterized in that: described steel scrap carries skewed slot (1) below or two sides to be provided with the horizontal exciting force device that steel scrap conveying skewed slot (1) is carried out exciting.
3. electric furnace charging as claimed in claim 2 and preheating device, it is characterized in that: the described towed material conveyer (B) that is subjected to is subjected to material conveyer or oblique rail dolly material feeding machine for the plate chain, being obliquely installed the angle of inclination with horizontal plane is 0 ° ~ 50 °, and carries skewed slot (1) to become the inverted V-shaped setting with steel scrap.
4. electric furnace charging as claimed in claim 3 and preheating device is characterized in that: described horizontal exciting force device is the horizontal exciting force device of twin shaft conjugation.
5. electric furnace charging as claimed in claim 4 and preheating device is characterized in that: described seal closure is provided with bleeding point.
6. electric furnace charging as claimed in claim 5 and preheating device, it is characterized in that: described steel scrap carries skewed slot (1) to include stove section skewed slot (1a), preheating section skewed slot (1b), exhausting material feeding section skewed slot (1c), go into stove section skewed slot (1a), the top of preheating section skewed slot (1b) and exhausting material feeding section skewed slot (1c) is respectively arranged with first seal closure (4a), second seal closure (4b), exhausting sealing gland cover (5) is describedly gone into stove section skewed slot (1a), preheating section skewed slot (1b), the bottom of exhausting material feeding section skewed slot (1c) is separately installed with the first horizontal exciting force device (6a), the second horizontal exciting force device (6b), the 3rd horizontal exciting force device (6c).
7. electric furnace charging as claimed in claim 6 and preheating device is characterized in that: described exhausting sealing gland cover (5) is provided with bleeding point (5a).
8. electric furnace charging as claimed in claim 7 and preheating device is characterized in that: on described first seal closure (4a) and/or second seal closure (4b) burner (7) is installed.
9. electric furnace charging as claimed in claim 8 and preheating device is characterized in that: be provided with plate-turning door (5b) between the inlet of described bleeding point (5a) and steel scrap conveying skewed slot (1).
10. electric furnace charging as claimed in claim 9 and preheating device is characterized in that: described steel scrap carries skewed slot (1) to be hung naturally on support (3) by suspension rod (2).
11. as arbitrary described electric furnace charging of claim 1 to 10 and preheating device, it is characterized in that: it is 3 °～20 ° that described steel scrap is carried skewed slot (1) bottom land and horizontal plane angle of inclination.
12. as arbitrary described electric furnace charging of claim 1 to 10 and preheating device, it is characterized in that: it is 25 °～90 ° that described steel scrap is carried skewed slot (1) bottom land and horizontal plane angle of inclination.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010104360A CN101776395A (en) | 2010-02-01 | 2010-02-01 | Electric furnace charging and preheating device |
| PCT/CN2010/079293 WO2011091685A1 (en) | 2010-02-01 | 2010-11-30 | Preheating and conveying equipment for steel scrap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010104360A CN101776395A (en) | 2010-02-01 | 2010-02-01 | Electric furnace charging and preheating device |
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| CN101776395A true CN101776395A (en) | 2010-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010104360A Pending CN101776395A (en) | 2010-02-01 | 2010-02-01 | Electric furnace charging and preheating device |
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| CN101858695A (en) * | 2010-06-09 | 2010-10-13 | 五力机电科技（昆山）有限公司 | Centering-adjustment type feeding device |
| CN102003876A (en) * | 2010-11-16 | 2011-04-06 | 中冶赛迪工程技术股份有限公司 | Culvert raw material delivery and smoke dust recovery device and method for smelting container |
| WO2011091685A1 (en) * | 2010-02-01 | 2011-08-04 | 中冶赛迪工程技术股份有限公司 | Preheating and conveying equipment for steel scrap |
| CN102181601A (en) * | 2011-04-25 | 2011-09-14 | 中冶赛迪工程技术股份有限公司 | Differential motion airtight feeding electric furnace smelting device and feeding method thereof |
| CN103146876A (en) * | 2013-03-27 | 2013-06-12 | 中冶赛迪工程技术股份有限公司 | Material conveying method for automatically distributing materials on material conveying device and material conveying device |
| CN103290168A (en) * | 2013-06-04 | 2013-09-11 | 河南太行振动机械股份有限公司 | Electric steelmaking feed heating material transporting groove |
| CN103498018A (en) * | 2013-10-15 | 2014-01-08 | 新乡市鸿河振动机械有限公司 | Scrap steel preheating step-by-step conveying device for intermediate frequency furnace |
| CN103952509A (en) * | 2014-05-09 | 2014-07-30 | 中冶赛迪工程技术股份有限公司 | Electric furnace charging flue and furnace body sealing device as well as electric furnace system |
| CN104848695A (en) * | 2015-06-10 | 2015-08-19 | 中冶赛迪工程技术股份有限公司 | Composite pull rod suspension device for vibration feeding tank |
| CN105202907A (en) * | 2015-10-30 | 2015-12-30 | 中冶赛迪工程技术股份有限公司 | Steel scrap preheating type electric arc furnace and method of improving heating cold area of side wall charging electric arc furnace |
| CN109237950A (en) * | 2018-09-14 | 2019-01-18 | 河南太行全利重工股份有限公司 | Continuous charging pre-heating device |
| CN109468429A (en) * | 2018-09-30 | 2019-03-15 | 河南太行全利重工股份有限公司 | Converter scrap steel preheating conveying system |
| WO2019056930A1 (en) * | 2017-09-22 | 2019-03-28 | 中冶赛迪工程技术股份有限公司 | Continuous horizontal-feeding preheating device and preheating enhancement method thereof |
| CN109696052A (en) * | 2019-01-22 | 2019-04-30 | 中冶赛迪工程技术股份有限公司 | A kind of combined type continuous feeding |
| CN110425893A (en) * | 2019-08-16 | 2019-11-08 | 中冶赛迪工程技术股份有限公司 | The connection structure and electric furnace system of electric furnace charging duct and electric furnace |
| CN112912519A (en) * | 2018-10-22 | 2021-06-04 | 因泰克熔铸技术有限公司 | System for melting scrap and method for operating the system |
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2010
- 2010-02-01 CN CN201010104360A patent/CN101776395A/en active Pending
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| WO2011091685A1 (en) * | 2010-02-01 | 2011-08-04 | 中冶赛迪工程技术股份有限公司 | Preheating and conveying equipment for steel scrap |
| CN101858695A (en) * | 2010-06-09 | 2010-10-13 | 五力机电科技（昆山）有限公司 | Centering-adjustment type feeding device |
| CN101858695B (en) * | 2010-06-09 | 2012-06-27 | 五力机电科技（昆山）有限公司 | Centering-adjustment type feeding device |
| CN102003876A (en) * | 2010-11-16 | 2011-04-06 | 中冶赛迪工程技术股份有限公司 | Culvert raw material delivery and smoke dust recovery device and method for smelting container |
| CN102003876B (en) * | 2010-11-16 | 2012-12-05 | 中冶赛迪工程技术股份有限公司 | Culvert raw material delivery and smoke dust recovery device |
| CN102181601A (en) * | 2011-04-25 | 2011-09-14 | 中冶赛迪工程技术股份有限公司 | Differential motion airtight feeding electric furnace smelting device and feeding method thereof |
| CN102181601B (en) * | 2011-04-25 | 2012-10-31 | 中冶赛迪工程技术股份有限公司 | Differential motion airtight feeding electric furnace smelting device and feeding method thereof |
| CN103146876A (en) * | 2013-03-27 | 2013-06-12 | 中冶赛迪工程技术股份有限公司 | Material conveying method for automatically distributing materials on material conveying device and material conveying device |
| CN103290168A (en) * | 2013-06-04 | 2013-09-11 | 河南太行振动机械股份有限公司 | Electric steelmaking feed heating material transporting groove |
| CN103498018A (en) * | 2013-10-15 | 2014-01-08 | 新乡市鸿河振动机械有限公司 | Scrap steel preheating step-by-step conveying device for intermediate frequency furnace |
| CN103952509A (en) * | 2014-05-09 | 2014-07-30 | 中冶赛迪工程技术股份有限公司 | Electric furnace charging flue and furnace body sealing device as well as electric furnace system |
| CN103952509B (en) * | 2014-05-09 | 2015-11-11 | 中冶赛迪工程技术股份有限公司 | Electric furnace charging flue and furnace sealing device and electric furnace system |
| CN104848695A (en) * | 2015-06-10 | 2015-08-19 | 中冶赛迪工程技术股份有限公司 | Composite pull rod suspension device for vibration feeding tank |
| CN105202907A (en) * | 2015-10-30 | 2015-12-30 | 中冶赛迪工程技术股份有限公司 | Steel scrap preheating type electric arc furnace and method of improving heating cold area of side wall charging electric arc furnace |
| WO2019056930A1 (en) * | 2017-09-22 | 2019-03-28 | 中冶赛迪工程技术股份有限公司 | Continuous horizontal-feeding preheating device and preheating enhancement method thereof |
| CN109237950A (en) * | 2018-09-14 | 2019-01-18 | 河南太行全利重工股份有限公司 | Continuous charging pre-heating device |
| CN109468429A (en) * | 2018-09-30 | 2019-03-15 | 河南太行全利重工股份有限公司 | Converter scrap steel preheating conveying system |
| CN109468429B (en) * | 2018-09-30 | 2023-12-12 | 河南太行全利重工股份有限公司 | Converter scrap steel preheating and conveying system |
| CN112912519A (en) * | 2018-10-22 | 2021-06-04 | 因泰克熔铸技术有限公司 | System for melting scrap and method for operating the system |
| CN109696052A (en) * | 2019-01-22 | 2019-04-30 | 中冶赛迪工程技术股份有限公司 | A kind of combined type continuous feeding |
| CN109696052B (en) * | 2019-01-22 | 2024-02-23 | 中冶赛迪工程技术股份有限公司 | Combined continuous feeding device |
| CN110425893A (en) * | 2019-08-16 | 2019-11-08 | 中冶赛迪工程技术股份有限公司 | The connection structure and electric furnace system of electric furnace charging duct and electric furnace |
| CN110425893B (en) * | 2019-08-16 | 2024-05-14 | 中冶赛迪工程技术股份有限公司 | Connection structure of electric furnace feeding duct and electric furnace system |
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Application publication date: 20100714 |