CN110388830A - Scrap preheater, arc-melting equipment and pre-heating mean - Google Patents
Scrap preheater, arc-melting equipment and pre-heating mean Download PDFInfo
- Publication number
- CN110388830A CN110388830A CN201910705777.0A CN201910705777A CN110388830A CN 110388830 A CN110388830 A CN 110388830A CN 201910705777 A CN201910705777 A CN 201910705777A CN 110388830 A CN110388830 A CN 110388830A
- Authority
- CN
- China
- Prior art keywords
- scrap
- discharger
- steel
- vertical shaft
- electric arc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 21
- 238000002844 melting Methods 0.000 title claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 223
- 239000010959 steel Substances 0.000 claims abstract description 223
- 238000010891 electric arc Methods 0.000 claims description 83
- 239000003546 flue gas Substances 0.000 claims description 42
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 41
- 239000000463 material Substances 0.000 claims description 36
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 28
- 239000001301 oxygen Substances 0.000 claims description 28
- 229910052760 oxygen Inorganic materials 0.000 claims description 28
- 230000007246 mechanism Effects 0.000 claims description 22
- 239000000446 fuel Substances 0.000 claims description 21
- 238000009825 accumulation Methods 0.000 claims description 18
- 238000010079 rubber tapping Methods 0.000 claims description 16
- 239000000779 smoke Substances 0.000 claims description 16
- 230000005540 biological transmission Effects 0.000 claims description 11
- 239000003517 fume Substances 0.000 claims description 10
- 238000004868 gas analysis Methods 0.000 claims description 9
- 230000003028 elevating effect Effects 0.000 claims description 8
- 230000008018 melting Effects 0.000 claims description 6
- 238000009529 body temperature measurement Methods 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 23
- 238000003723 Smelting Methods 0.000 description 17
- 230000008569 process Effects 0.000 description 13
- 238000005516 engineering process Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 230000001427 coherent effect Effects 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000009845 electric arc furnace steelmaking Methods 0.000 description 4
- 239000004615 ingredient Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 3
- 239000000460 chlorine Substances 0.000 description 3
- 229910052801 chlorine Inorganic materials 0.000 description 3
- 235000019504 cigarettes Nutrition 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 241000282485 Vulpes vulpes Species 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 230000002045 lasting effect Effects 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241001417490 Sillaginidae Species 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000109 continuous material Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000010358 mechanical oscillation Effects 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000003019 stabilising effect Effects 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 238000005303 weighing Methods 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
- 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
- F27B14/20—Arrangement of controlling, monitoring, alarm or like 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
- F27D13/00—Apparatus for preheating charges; Arrangements for preheating charges
- F27D13/002—Preheating scrap
-
- 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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2001/00—Composition, conformation or state of the charge
- F27M2001/02—Charges containing ferrous elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2003/00—Type of treatment of the charge
- F27M2003/13—Smelting
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The present invention provides a kind of scrap preheater, arc-melting equipment and pre-heating mean, scrap preheater includes: vertical shaft, and upper end is feed inlet, and the bottom side of the wall of vertical shaft is provided with discharge port；Discharger is arranged in vertical shaft and can move along the vertical direction relative to vertical shaft, and discharger has towards the inclined upper surface of discharge port；Haul trolley, can vibrate haul, and the arrival end of haul trolley is connect with discharge port；Guide roller is set to discharge port and is located on the upside of the arrival end of haul trolley, and guide roller can control the aperture of discharge port.The beneficial effects of the invention are as follows, discharger is able to carry out the adjusting of short transverse, by adjusting the height of discharger and the position of guide roller, different discharge rates may be implemented, haul trolley can be mobile with horizontal direction, by adjusting the vibration frequency and amplitude of haul trolley, the lowering position of steel scrap can be controlled, realizes being continuously added to for steel scrap.
Description
Technical field
The present invention relates to metallurgical technology fields, and in particular to a kind of scrap preheater, arc-melting equipment and preheating side
Method.
Background technique
Energy conservation, consumption reduction, environmental protection are always one of core technology of global EAF steelmaking technology development in electric-arc furnace steelmaking.
Traditional electric furnace arrangement for producing steel, steel scrap are divided into two to being packed into three times from furnace roof, by what is generated between electrode and steel scrap
Electric arc carrys out melting waste steel.Therefore, traditional electric arc furnaces can only the intermittent power transmission into furnace, certain interval of time i.e. have a power failure, unscrewing
Bell charging, significantly reduces the productivity of electric arc furnaces in this way, increases the heat loss and energy consumption of electric arc furnaces.It is big simultaneously
Amount flue dust is discharged into workshop in charging, increases the difficulty of dedusting environment friendly.The electrode and steel scrap of discontinuous generate open arc, increase
It is big to the impact of power grid and the extent of injury of noise, make steel generation high-temperature flue gas it is energy-saving be the important of electric arc furnace smelting
Project, wherein using fume afterheat preheating scrap always by people's extensive concern.It can be generated in arc furnace smelting procedure a large amount of
High-temperature flue gas, the temperature of these flue gases are up to 1000 DEG C or more, and exhaust smoke level is up to 500~1200m3/(h·t).Utilize these cigarettes
Gas sensible heat preheating scrap, it will generate huge economic benefit.
It is well known that scrap steel preheating is one of the developing direction of electric arc furnaces steel power-saving technology, at present mating with electric arc furnaces
Scrap steel preheating in, representative manner has a horizontal continuity transfer ways and shaft furnace mode, and device therefor is respectively such as Kang Sidi electric arc
Furnace (i.e. Consteel electric arc furnaces) and comb formula shaft furnace electric arc furnaces.
It wherein, is one two during the last ten years both at home and abroad in a skill of research using electric arc furnaces smoke pre-heating steel scrap technology
Art, but because its technical difficulty is big, only a small amount of scheme investment actual use at present, Typical Representative is such as vibration continuous charging
Consteel (US5400358-1992), finger shaft (DE4025294A1-1992), vertical shaft side push away charging (US2007/
0013112A1) technology.
Horizontal scrap preheater is of interest for Some Enterprises because not having excessively high requirement to factory building height.
Horizontal continuous charging scrap preheater representative at present is mainly the external so-called continuous refining introduced
Steel electric arc furnaces (Consteel).
Consteel (US5400358-1992) is a kind of horizontal continuity feeding technology, it can be achieved that electric arc furnaces stabilising arc is smelted,
Environmental protection and consumption of electrode reduction, can substantially reduce the production process expense of electric arc furnaces, but this method steel scrap only has upper materials quilt
Heating, therefore scrap steel preheating is ineffective, reports that average energy-saving effect only has ton steel 25kwh according to domestic and international；Further, since to improve
Raw material (steel scrap) heat exchange efficiency, heap height necessarily increases the length of preheating section than relatively thin to the steel scrap in delivery chute on the conveyor belt, if
For standby overall length up to 90~100m, the arrangement for workshop is very unfavorable；Again, program dynamic sealing gas leakage is more serious,
It is larger to the capacity requirement of blower etc..
The hot fume of Kang Sidi electric arc furnaces, which is run in preheating device against steel scrap, to be flowed, since steel scrap is in horizontal preheating
It can not be full of in device, there is the air-flow of most to be so that the scrap steel preheating effect of bottom is poor in the upper flow of steel scrap layer
Reach higher heat exchange, it usually needs 60 meters of long preheating tunnels.Due to having the compound containing chlorine, such as PVC in steel scrap
Deng theoretically, these compounds containing chlorine will generate dioxin lower than 800 DEG C of imperfect combustions, especially 300~500
Imperfect combustion most easily produces dioxin within the scope of DEG C, since the preheating tunnel of Kang Sidi furnace is longer, hot fume and steel scrap heat
After exchange, temperature is constantly reduced, and is easy to the compound containing chlorine in steel scrap under imperfect combustion between 300~500 DEG C
Dioxin is generated, environment is polluted.
Inherent defect existing for Kang Sidi electric arc furnaces is: although 1, its Zhi Gang company, inventor Intel thinks that the said firm opens
The Consteel technique of hair can be by scrap steel preheating to 500 DEG C or so, and Dexing company, equipment supplier Italy, which will also publicize, will give up
Steel is preheating to 400 DEG C~600 DEG C, and the production practices of Kyoei Steel (i.e. Japan altogether steel made in Great Britain) company show it is preheated after
Steel scrap temperature it is uneven up and down (upper relative superiority or inferiority is low), away from 100 DEG C of steel scrap temperature < at the 600mm~700mm of surface, energy-saving effect
Only 25kwh/t steel, heat transfer efficiency are very low.The country is also turning out that the equipment steel scrap is pre- with the production practices of Consteel electric arc furnaces
Hot temperature is low, and energy-saving effect is poor.2, its device length is very long, general preheating channel and about 60 meters of charging conveyer overall length or so,
It takes up a large area, the installation of equipment and the transformation of old workshop are extremely difficult, and one-time investment is very high.3, inleakage is big, in flue gas
A large amount of wild wind are mixed into, not only increase the burden of dedusting fan, and be unfavorable for the recycling of fume afterheat significantly.4, feeding
Lifting magnet crane operating rate is very high, and some reaches 90% or more, influences to produce because of charging sometimes.
Finger shaft electric arc furnaces is that German FUCHS company developed and develops in early 1990s, is a kind of typical case
Steel scrap preheating device of electric arc furnace, so-called " finger " refer to have a single row or multiple rows between shaft furnace and electric arc furnaces connection interface can
The finger class bracket opened and closed by mechanical device.In arc furnace smelting procedure, by being directly added into waste gas stream
Steel scrap and make full use of exhaust gas to the warm-up ability of steel scrap, not merely with obvious heat of smoke, while using the combustible gas in flue gas
Body carries out the chemical energy of second-time burning, and therefore, this kind of scrap steel preheating technology with material-supporting device is because flue gas can penetrate steel scrap layer, in advance
Hot energy-saving effect is good, can reach a ton 60~100kwh of steel, still, the direct punching in Classical Shaft Furnace due to steel scrap to finger class bracket
It hits, is easy to cause and is smashed by steel scrap, increase plant maintenance, affect the popularization and use of scrap steel preheating technology.Simultaneously because useless
There are a certain amount of thin materials in steel, and the fusing of local steel scrap is likely to cause in the case where fuel gas second-time burning, is made
It is bonded at steel scrap in shaft furnace, causes the problem of shaft furnace steel scrap can not smoothly enter electric arc furnaces.It is fallen for this purpose, steel scrap is avoided directly to pound
To finger class bracket, the impact of steel scrap charging process can be significantly reduced, the maintenance of equipment is reduced.FUCHS company releases again
FUCHS-COSS electric arc furnaces of new generation, is the improvement to shaft furnace, original vertical shaft, pusher is replaced with independent push feed system
System is anhydrous cooling system, and cylinder iron board group is at avoiding originally because of vertical shaft leak, and influence smelting cycle, but mechanical structure
Huge, operation is complicated.
Although the vertical scrap steel preheating technology thermal efficiency is higher, scrap steel preheating temperature is higher, it requires the absolute altitude of workshop very
Height, equipment is huge, and one-time investment is very high, and is not suitable with the transformation in old electric-arc furnace steelmaking workshop.In comb formula shaft furnace, electric arc
The hot fume of furnace enters from the lower end of vertical shaft, is discharged from the upper end of vertical shaft.In this way, the section of vertical shaft will have sufficiently large, Cai Nengrang
Hot fume flows through in gap between steel scrap.In actual production, the finger of water cooling, which is combed, is easy to smash leak by steel scrap, or by steel scrap card
Firmly, the cost of equipment is high, and plant maintenance amount is big, so the big stove use that comb formula shaft furnace is only a part of on electric-arc furnace steelmaking.
Summary of the invention
The present invention provides a kind of scrap preheater, arc-melting equipment and pre-heating means, to solve in the prior art
Caused by causing finger class deformation and cracking due to raw scrap material falling impacts the problem of equipment leak.
The technical solution adopted by the present invention to solve the technical problems is: a kind of scrap preheater, comprising: vertical shaft, on
End is feed inlet, and the bottom side of the wall of vertical shaft is provided with discharge port；Discharger, be arranged in vertical shaft and can along the vertical direction relatively
It is moved in vertical shaft, discharger has towards the inclined upper surface of discharge port；Haul trolley can vibrate haul, haul trolley
Arrival end is connect with discharge port；Guide roller is set to discharge port and is located on the upside of the arrival end of haul trolley, and guide roller can be controlled
Produce the aperture of material mouth.
Further, guide roller includes telescopic rod, oscillating rod and guide roller, and one end of telescopic rod and the shell of vertical shaft are cut with scissors
It connects, the center of rotation of the telescopic rod other end and guide roller is hinged, one end of oscillating rod and the housing hinge of vertical shaft, and oscillating rod is another
The center of rotation of one end and guide roller is hinged, and one end of telescopic rod and one end of oscillating rod shift to install.
Further, the upper end of discharger is provided with multiple discharge rolls, and multiple discharge rolls uniformly at intervals and form discharger
Upper surface.
Further, discharger is towards being provided with the smoke ventilator passed through for pre- hot fume, cigarette on the side wall of discharge port
Vent hole is used to be separately connected above the upper surface of discharger and the entrance of electric arc furnaces.
Further, it is provided with flue on the downside of the feed inlet of vertical shaft, flue gas analysis component is provided at flue
Component is measured with temperature.
Further, scrap preheater further includes elevating mechanism, and elevating mechanism is arranged in the lower section of discharger and can
Discharger is driven to move along the vertical direction relative to vertical shaft.
Further, Fuel lance and combustion-supporting oxygen rifle are provided in vertical shaft, Fuel lance and combustion-supporting oxygen rifle are respectively positioned on charging
Below mouthful and it is located above discharger.
Further, the feeding assembly for charging is provided at the feed inlet of vertical shaft.
Further, feeding assembly includes: shaft furnace hopper, structure funnel-shaped, the miner diameter end of shaft furnace hopper with into
Material mouth connection, the bigger diameter end of shaft furnace hopper are located at the top of the miner diameter end of shaft furnace hopper along the vertical direction；First sealing is slided
Plate is arranged in the bigger diameter end of shaft furnace hopper and can control the opening and closing of the bigger diameter end of shaft furnace hopper；Second drop bar, if
It sets the miner diameter end in shaft furnace hopper and the opening and closing of the miner diameter end of shaft furnace hopper, and the first drop bar and second can be controlled
Drop bar being capable of self-movement.
Feeding assembly includes: transmission guide rail, is obliquely installed and connects feed inlet and ground material heap；Hopper, setting are transmitting
And can be mobile with transmission guide rail on guide rail, hopper can feed to feed inlet.
The present invention also provides a kind of arc-melting equipments, including electric arc furnaces and above-mentioned scrap preheater, electric arc furnaces
Entrance connect with the outlet of haul trolley.
The present invention further additionally provides a kind of pre-heating mean, comprising the following steps: discharger is risen to setting by step 10
Extreme higher position, and steel scrap is added into vertical shaft by feed inlet and forms steel scrap accumulation area；Step 20 opens Fuel lance and combustion-supporting
Oxygen rifle heats steel scrap accumulation area；Step 30, when steel scrap accumulation area is heated to set temperature, reduce discharger make steel scrap
Accumulation area is connect with discharge port, while being opened haul trolley and being transported steel scrap into electric arc furnaces；Step 40, as electric arc furnaces is to steel scrap
Melting is carried out, a large amount of high-temperature flue gas can be generated in electric arc furnaces, high-temperature flue gas is along the smoke ventilator of discharger and the upper end of discharger
Multiple roller gaps are provided with to preheat steel scrap accumulation area；Step 50 measures component by flue gas analysis component and temperature
Measurement result adjust Fuel lance and combustion-supporting oxygen rifle aperture；Step 60, after molten steel reaches sets requirement in electric arc furnaces, it is right
Electric arc furnaces carries out tapping steel；Step 70 circuits sequentially step 10, step 30, step 40, step 50 and step 60.
Further, in step 30, the producing steel velocity of discharge port is controlled by discharger and guide roller.
The invention has the advantages that discharger is able to carry out the adjusting of short transverse, by the height for adjusting discharger
With the position of guide roller, different discharge rates may be implemented, meanwhile, above-mentioned guide roller can close discharge port, be stopped with reaching
The only purpose of feeding；Haul trolley can be mobile with horizontal direction, by adjusting the vibration frequency and amplitude of haul trolley, can control
The lowering position of steel scrap processed realizes being continuously added to for steel scrap.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of the embodiment of the present invention；
Fig. 2 is that steel scrap is continuously added into vertical shaft process schematic；
Fig. 3 is discharger, chute feeder feeding process and charging process schematic；
Fig. 4 is discharger, chute feeder persistently feeds and scrap melting process schematic；
Fig. 5 is discharger, chute feeder stopping charging and smelting molten steel process schematic；
Fig. 6 is vertical shaft charging process and smelting molten steel process schematic；
Fig. 7 is remaining molten steel amount and discharger, chute feeder feeding process schematic diagram after tapping；
Fig. 8 is the smelting process schematic diagram using hopper feeding.
Appended drawing reference in figure: 10, vertical shaft；11, flue；12, flue gas analysis component；13, temperature measures component；14,
Fuel lance；15, combustion-supporting oxygen rifle；16, case frame；20, discharger；21, elevating mechanism；211, connector；22, flue gas is logical
Hole；23, discharge rolls；30, haul trolley；31, chute feeder；40, guide roller；41, telescopic rod；42, oscillating rod；43, guide roller；
50, electric arc furnaces；51, bell；52, conductive cross arm；53, coherent oxygen lance；54, electrode lifting device；55, rotating lifting gear；56,
Lower furnace shell tilting equipment；61, shaft furnace hopper；62, the first drop bar；63, the second drop bar；70, expect basket；71, it transmits
Guide rail；72, hopper；73, lift truck；74, tipping mechanism；75, traction device；76, limited block；80, pedestal；81, limiting lock
Determine component；82, seal assembly.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
As shown in Figures 1 to 7, the embodiment of the invention provides a kind of scrap preheaters, including vertical shaft 10, discharger
20, haul trolley 30 and guide roller 40.The upper end of vertical shaft 10 is feed inlet, and the bottom side of the wall of vertical shaft 10 is provided with discharge port.It unloads
Glassware 20 is arranged in vertical shaft 10 and can move along the vertical direction relative to vertical shaft 10, and discharger 20 has to incline towards discharge port
Oblique upper surface.Haul trolley 30 can vibrate haul, and the arrival end and discharge port of haul trolley 30 are tightly connected, haul trolley
30 outlet end is connect with electric arc furnaces 50.Guide roller 40 is set to discharge port and is located on the upside of the arrival end of haul trolley 30, leads
The aperture of discharge port can be controlled to roller 40.
Present invention firstly provides by discharger 20 and haul trolley 30 carry out steel scrap addition in the way of, cancel traditional design
The middle finger-shaped valve group mechanism cooling using water flowing is avoided being caused finger class deformation due to raw scrap material falling impacts and be opened
The drawbacks of equipment leak caused by splitting, while pusher structure is eliminated, the large-scale frame and hydraulic mechanism for pushing away steel construction are reduced,
Realize that the company of steel scrap is realized in conjunction with the vibration feeding of haul trolley 30 in the whereabouts of steel scrap using the inclined upper surface of discharger 20
It is continuous to be added.
It should be noted that above-mentioned vertical shaft 10, discharger 20 and haul trolley 30 are arranged on pedestal 80, in discharger
Seal assembly 82 is provided between 20 and electric arc furnaces 50.
Above-mentioned 30 bottom of haul trolley is equipped with traveling wheel, and pedestal 80 is provided with limitation locking close to the position of electric arc furnaces 50
Component 81 can fix haul trolley 30, while can lock haul trolley 30, avoid 31 feeding of chute feeder
It is mobile that there is a situation where haul trolleys 30 in journey.
Guide roller 40 includes telescopic rod 41, oscillating rod 42 and guide roller 43, one end of telescopic rod 41 and the shell of vertical shaft 10
Body frame 16 is hinged, and 41 other end of telescopic rod and the center of rotation of guide roller 43 are hinged, one end of oscillating rod 42 and vertical shaft 10
Case frame 16 it is hinged, 42 other end of oscillating rod and the center of rotation of guide roller 43 are hinged, and one end of telescopic rod 41 and
One end of oscillating rod 42 shifts to install.
Scrap preheater further includes elevating mechanism 21, and elevating mechanism 21 is arranged in the lower section of discharger 20 and can drive
Discharger 20 is moved relative to vertical shaft 10 along the vertical direction.Elevating mechanism 21 is connect with discharger 20 by connector 211.
Discharger 20 is able to carry out the adjusting of short transverse, by adjusting the height of discharger 20, passes through 20 He of discharger
The collective effect of guide roller 40 realizes different discharge rates；Meanwhile above-mentioned guide roller 43 can close discharge port, to reach
To the purpose for stopping feeding.Haul trolley 30 can be mobile with horizontal direction, the vibration frequency and width of adjustable haul trolley 30
Degree, controls different steel scrap lowering positions.
Preferably, haul trolley 30 can move in the horizontal direction, realize that the dynamic regulation steel scrap of chute feeder 31 leaves position
It sets；The chute feeder 31 on top is designed using telescopic structure, when haul trolley 30, which is unable to satisfy steel scrap, leaves status requirement,
Length by adjusting chute feeder 31 realizes that steel scrap leaves the dynamic regulation of position.The chute feeder 31 of haul trolley 30 can use
The form of mechanical oscillation carries out the horizontal feed of steel scrap, and the form that drying grate can also be used is conveyed.Haul trolley 30 uses
Variable-frequency motor realizes the dynamic regulation of chute feeder Oscillation Amplitude and frequency, meets different charging rate requirements, charging capability control
Make the charging rate at 0.4~4.5 tons/minute.The chute feeder 31 of haul trolley 30 can use U-shaped structure, while along U-lag
Inwall processing increases chute feeder 31 to the frictional force of steel scrap, avoids the skidding and rolling of steel scrap at matrix pattern protrusion.
As shown in Figure 1, the upper end of discharger 20 is provided with multiple discharge rolls 23, multiple discharge rolls 23 uniformly at intervals and are formed
The upper surface of discharger 20.Steel scrap can be promoted to fall to the chute feeder 31 of haul trolley 30 using the rotation of discharge rolls 23, made
Steel scrap is more easier to transport, and eliminates pusher structure to reach, and reduces the mesh of the large-scale frame and hydraulic mechanism that push away steel construction
's.
In the embodiment of the present invention, 20 upper surface of discharger uses inclined arrangement form, and upper surface angle with horizontal plane exists
30 °~60 °.
Discharger 20 is towards being provided with the smoke ventilator 22 passed through for pre- hot fume, smoke ventilator on the side wall of discharge port
22 are separately connected the entrance above the upper surface of discharger 20 with electric arc furnaces 50.Fume pipe is provided on the downside of the feed inlet of vertical shaft 10
Road 11 is provided with flue gas analysis component 12 and temperature measurement component 13 at flue 11.Fuel lance is provided in vertical shaft 10
14 and combustion-supporting oxygen rifle 15, Fuel lance 14 and combustion-supporting oxygen rifle 15 are respectively positioned below feed inlet and are located at 20 top of discharger.
Preferably, guide roller 40 uses porous design, and the form of inner hollow can be such that high-temperature flue gas passes through, and flue gas can
To enter vertical shaft 10 by guide roller 40,20 top of discharger, the smooth outflow of flue gas is realized.Guide roller 40 can control simultaneously
The height of steel scrap on chute feeder 31 realizes that steel scrap even level on delivery chute is distributed.
The height of the side wall of chute feeder 31 is greater than 200mm, avoids steel scrap due to rolling, vibrating etc. by sending in the feeding process
A possibility that 31 side wall of hopper is fallen.
Forming a large amount of high-temperature flue gas with the smelting of molten steel in electric arc furnaces 50, inside 50 burner hearth of electric arc furnaces, (flue-gas temperature exists
1300~1600 DEG C), high-temperature flue gas along the smoke ventilator 22 of discharger 20, the crack of multiple discharge rolls 23 and upper cavity into
Enter vertical shaft 10, steel scrap is preheated inside vertical shaft 10, is surveyed using the flue gas analysis component 12 and temperature installed on vertical shaft 10
The monitoring of component 13 and detection flue-gas temperature and flue gas main component are measured, according to flue-gas temperature and smoke components, adjusts Fuel lance
14 and combustion-supporting oxygen rifle 15 guarantee that scrap steel preheating temperature reaches under the premise of technique requires, the loading speed of steel scrap is adjusted, with useless
The continuous progress of the lasting addition of steel and smelting, the interior a large amount of high-temperature flue gas generated of electric arc furnaces 50 are persistently to scrap steel preheating, simultaneously
Fuel lance 14 and combustion-supporting oxygen rifle 15 can be closed.
It should be noted that for the one heat steel that electric arc furnaces 50 is smelted, due in 50 cupola well of electric arc furnaces without molten steel and
Flue gas needs to open Fuel lance 14 and combustion-supporting oxygen rifle 15 on vertical shaft 10 and carries out scrap heating, while continuously adding steel scrap.When
When 10 lower part steel scrap temperature of vertical shaft reaches 600 DEG C, discharger 20 is reduced, opens the vibrating mechanism of haul trolley 30, opens discharging
The discharge rolls 23 at 20 top of device promote steel scrap to fall to the chute feeder 31 of haul trolley 30, utilize using the rotation of discharge rolls 23
Steel scrap is delivered into electric arc furnaces by the vibration of haul trolley 30；Guide roller 40 can be transported up and down under the action of the driving mechanism simultaneously
It is dynamic, avoid raw scrap material from hitting discharge port position, above-mentioned guide roller 40 according to the technological requirements, has the function of closing discharge port.
In the embodiment of the present invention, the feeding assembly for charging is provided at the feed inlet of vertical shaft 10.The wherein charging group
Part includes shaft furnace hopper 61, the first drop bar 62 and the second drop bar 63.The structure funnel-shaped of shaft furnace hopper 61 is erected
The miner diameter end of furnace hopper 61 is connect with feed inlet, and the bigger diameter end of shaft furnace hopper 61 is located at shaft furnace hopper 61 along the vertical direction
Miner diameter end top.First drop bar 62 is arranged in the bigger diameter end of shaft furnace hopper 61 and can control shaft furnace hopper 61
Bigger diameter end opening and closing.Second drop bar 63 is arranged in the miner diameter end of shaft furnace hopper 61 and can control shaft furnace hopper 61
Miner diameter end opening and closing, and the first drop bar 62 and the second drop bar 63 being capable of self-movements.
When operation, the material basket 70 for carrying steel scrap furnace charge is transported to by 61 top of shaft furnace hopper by overhead traveling crane, opens first
Drop bar 62 is closed the second drop bar 63, raw scrap material is added in shaft furnace hopper 61, while by 20 liters of discharger
To extreme higher position, the first drop bar 62 is closed, opens the second drop bar 63, raw scrap material is gradually fallen under vertical shaft 10
Section, and steel scrap accumulation area is formed, above the steel scrap that the steel scrap of subsequent whereabouts falls before gradually falling in down.
Certainly, feeding assembly is not limited to above-described embodiment, as shown in figure 8, feeding assembly includes transmission guide rail 71, hopper
72, lift truck 73, tipping mechanism 74, traction device 75 and limited block 76.
Transmission guide rail 71 is obliquely installed and connects feed inlet and ground material heap.Lift truck 73 is arranged on transmission guide rail 71 simultaneously
Can be mobile with transmission guide rail 71, above-mentioned hopper 72 is arranged on lift truck 73 and is connected by tipping mechanism 74 and lift truck 73
It connects.Above-mentioned traction device 75 is arranged in the upper end of transmission guide rail 71 and transmission guide rail 71 can be driven mobile, 76 energy of limited block
Enough limit the moving displacement of lift truck 73.Steel scrap can be poured into vertical shaft 10 by above-mentioned hopper 72, and other structures are and formerly
Identical in embodiment, details are not described herein again.
Further, the form of inclination hopper feeding can also be used by the way of expecting basket feeding in the present invention, can also
Raw scrap material is added in vertical shaft receiving hopper using the form of stepped bucket chain conveyor.Belt can also be used in feed mechanism
Transporter carries out feeding in continuous material.
It should be noted that the vibration working face selection of discharge rolls 23, guide roller 40, haul trolley 30 is resistant to high temperature wear-resisting
Material, preferably heat resisting steel and heat-resisting alloy extend service life of equipment, while above-mentioned wear parts are using the side locally installed
Formula, the local replacing after abrasion may be implemented, reduces the operating cost of equipment.
The present invention also provides a kind of arc-melting equipments, including electric arc furnaces 50 and above-mentioned scrap preheater, electric arc
The entrance of furnace 50 is connect with the outlet of haul trolley 30.
Wherein, above-mentioned electric arc furnaces 50 includes mainly including furnace bottom, furnace shell, furnace wall, bell 51, electrode in the embodiment of the present invention
It fascinates machine with conductive cross arm 52, electrode lifting device 54, bell braced frame, supporting member, rotating lifting gear 55, lower furnace shell
Structure 56.Specific connection structure is similar to the structure of electric arc furnaces in the prior art, is no longer repeated herein.
At work, in electric arc furnaces 50 steel scrap be continuously added into, steel scrap is fallen into molten steel bath, and molten steel bath is to useless
Steel is heated and is melted, while opening the coherent oxygen lance 53 on 50 side wall of electric arc furnaces, oxygen blast is carried out to molten steel, according to practical need
Want, using side wall carbon rifle to carbon dust is sprayed into inside burner hearth, molten bath is stirred using coherent oxygen lance 53 and carbon rifle, carburetting,
The operation such as oxidation.
With the smelting of molten steel in electric arc furnaces 50, after steel quality, temperature and the ingredient in cupola well reach target call,
Rotating lifting gear 55 is driven, bell 51 is risen into certain altitude, realizes that bell 51 is separated with the small―gap suture of furnace wall, driving and electricity
The lower furnace shell tilting equipment 56 that furnace shell frame connects under arc furnace, fascinate lower furnace shell, is tapped using the tapping hole of cupola well bottom
Operation, the pouring molten steel for meeting subsequent technique requirement is entered in steel ladle, after molten steel reaches predetermined quality in ladle, while cupola well
It is interior to retain scheduled remaining molten steel, the lower furnace shell tilting equipment 56 connecting with lower furnace shell frame is adjusted, electric arc furnaces is adjusted to smelting
Refining state；It can continue to carry out steel scrap addition and scrap steel preheating to vertical shaft 10 during arc furnace tapping, while be preheating to predetermined
The steel scrap of temperature is continuously added into cupola well, and electrode realizes that raw scrap material is continuously added into electric arc furnaces cupola well without being gone up and down and being powered off.
After the completion of a upper tapping steel, steel scrap continuous heating, electrode continuous heating, steel scrap is continuously added into molten bath, sharp
Continue melting waste steel with the liquid molten steel of reservation, steel scrap persistently melts the bigger molten bath of formation and reaches with continuing growing for molten steel
Tapping steel can be carried out after to predetermined steel quality, temperature and ingredient, electric arc furnaces enters next smelting after the completion of tapping steel
Refine the period.Vertical shaft 10 may be implemented Non-intermittent and persistently feed and scrap steel preheating, and electric arc furnaces 50 can be realized the addition of Non-intermittent steel scrap
Cupola well and the heating of electrode Non-intermittent smelt qualified molten steel and realize tapping stable period and scheduled remaining molten steel, meet subsequent
The demand of process.
The embodiment of the invention also provides a kind of pre-heating means, comprising the following steps:
Discharger 20 is risen to setting extreme higher position, and steel scrap is added into vertical shaft 10 by feed inlet and is formed by step 10
Steel scrap accumulation area；
Step 20, unlatching Fuel lance 14 and combustion-supporting oxygen rifle 15 heat steel scrap accumulation area；
Step 30, when steel scrap accumulation area is heated to set temperature, reduce discharger 20 make steel scrap accumulation area and discharge port
Connection, while opening haul trolley 30 and transporting steel scrap into electric arc furnaces 50, wherein it is controlled out by discharger 20 and guide roller 40
The producing steel velocity of material mouth；
Step 40, as electric arc furnaces 50 carries out melting to steel scrap, a large amount of high-temperature flue gas, high temperature cigarette can be generated in electric arc furnaces 50
Gas is provided with multiple roller gaps along the smoke ventilator 22 of discharger 20 and the upper end of discharger 20 and carries out in advance to steel scrap accumulation area
Heat；
Step 50 adjusts Fuel lance 14 by the measurement result that flue gas analysis component 12 and temperature measure component 13 and helps
Fire the aperture of oxygen rifle 15；
Step 60, after molten steel reaches sets requirement in electric arc furnaces 50, to electric arc furnaces 50 carry out tapping steel；
Step 70 circuits sequentially step 10, step 30, step 40, step 50 and step 60.
Step 10 and step 20 are specific as follows, referring to shown in attached drawing 1 and attached drawing 2,
The material basket 70 for carrying steel scrap furnace charge is transported to 10 top of vertical shaft by overhead traveling crane, the first drop bar 62 is opened, closes
The second drop bar 63 is closed, raw scrap material is added in shaft furnace hopper 61, while discharger 20 is risen into extreme higher position, benefit
It is sealed with guide roller 40 and discharger 20 for the discharge port of vertical shaft 10.It is then shut off the first drop bar 62, opens the
Two drop bars 63, raw scrap material gradually fall to vertical shaft lower section, and form steel scrap accumulation area.
For the one heat steel that electric arc furnaces 50 is smelted, due to, without molten steel and flue gas, opening vertical shaft in 50 cupola well of electric arc furnaces
Fuel lance 14 and combustion-supporting oxygen rifle 15 on 10 carry out scrap heating, while continuously adding steel scrap；It is useless in shaft furnace hopper 61
Steel is continuously added into vertical shaft 10.Step 30 concrete operations are referring to shown in attached drawing 3 and attached drawing 4, when 10 lower part steel scrap temperature of vertical shaft reaches
When to 600 DEG C, discharger 20 is reduced, opens the vibrating mechanism of haul trolley 30, opens the discharge rolls 23 at 20 top of discharger, benefit
Promote steel scrap to fall to haul trolley 30 with the rotation of discharge rolls 23, steel scrap is delivered into electricity using the vibration of haul trolley 30
Arc furnace.
Expect that the raw scrap material of basket 70 can be added in shaft furnace hopper 61 simultaneously；Guide roller 40 can be in driving mechanism
Effect is lower to move up and down, and raw scrap material is avoided to hit outlet port；Simultaneously according to the technological requirements, there is closing shaft furnace discharge gate
Effect.Referring to shown in attached drawing 5, when the steel scrap in vertical shaft 10 drops to certain altitude, the second drop bar 63 is closed, opens first
The material basket 70 for loading raw scrap material is hoisted to the top of shaft furnace hopper 61 using overhead traveling crane by drop bar 62, opens material basket 70
Bottom discharge mechanism, by raw scrap material be added 10 top of vertical shaft shaft furnace hopper 61 in, steel scrap falls completely within shaft furnace material feeding
The first drop bar 62 is closed after bucket 61, opens the second drop bar 63, and raw scrap material is added in vertical shaft 10.
Discharger 20 is able to carry out the adjusting of short transverse, by adjusting the height of discharger 20 and utilizing guide roller 40
Collective effect realizes different discharge rates.Haul trolley 30 can be mobile with horizontal direction, the vibration of adjustable haul trolley 30
Dynamic frequency and amplitude control different steel scrap lowering positions, fall into the steel scrap of cupola well bottom in accumulation on furnace hearth, when raw scrap material exists
When accumulation on furnace hearth is to scheduled quantity, starting electrode lifting device 54, reduces electrode height, steel scrap is heated in energization, with
The continuous heating of electric arc, steel scrap gradually melt, cupola well bottom formed liquid state molten pool, molten steel bath surface formed foamed slag
Layer, electric arc, which is buried in foamed slag, carries out continuous heating.
With being continuously added into for steel scrap, after the steel scrap in vertical shaft 10 is entirely enclosed in electric arc furnaces, without useless wait preheat in vertical shaft 10
Steel stops the discharging movement of discharger 20.
Discharger 20 is risen to extreme higher position referring to shown in attached drawing 6, using elevating mechanism 21 by step 40 and step 50, simultaneously
The sealing that 10 bottom of vertical shaft is carried out using discharger 20 and guide roller 40, closes the second drop bar 63, opens the first sealing and slides
The material basket 70 for loading raw scrap material is hoisted to the top of shaft furnace hopper 61 using overhead traveling crane by plate 62, opens the bottom of material basket 70
Discharge mechanism raw scrap material is added in the shaft furnace hopper 61 on vertical shaft top, and steel scrap, which is fallen completely within, closes the after receiving cone
One drop bar 62 opens the second drop bar 63, and raw scrap material is added in vertical shaft 10.
After the steel scrap of predetermined quality is entirely enclosed in electric arc furnaces, molten steel bath is heated and is melted to steel scrap, is opened simultaneously
Coherent oxygen lance 53 in electric arc furnace sidewall carries out oxygen blast to molten steel, according to actual needs, using side wall carbon rifle to inside burner hearth
Carbon dust is sprayed into, molten bath is stirred using coherent oxygen lance 53 and carbon rifle, carburetting, the operation such as oxidation.
With the smelting of molten steel in electric arc furnaces, a large amount of high-temperature flue gas, high-temperature flue gas edge are formed inside the burner hearth of electric arc furnaces 50
Smoke ventilator 22,23 gap of discharge rolls and upper cavity enter vertical shaft 10, steel scrap is preheated inside vertical shaft, using perpendicular
Measurement component 13 monitoring of flue gas analysis component 12 and temperature and detection flue-gas temperature and flue gas main component that well 10 is installed, according to
Before flue-gas temperature and smoke components, adjusting Fuel lance 14 and combustion-supporting oxygen rifle 15 guarantee that scrap steel preheating temperature reaches technique requirement
It puts, adjusts the loading speed of steel scrap, with the continuous progress of the lasting addition of steel scrap and smelting, produced in the burner hearth of electric arc furnaces 50
Raw a large amount of high-temperature flue gas can close Fuel lance 14 and combustion-supporting oxygen rifle 15 persistently to scrap steel preheating.
Step 60 and step 70 as shown in fig. 7, after steel quality, temperature and the ingredient in cupola well reach target call,
Furnace cover lifting device 52 is driven, bell 51 is risen into certain altitude, realizes that bell 51 is separated with the small―gap suture of furnace wall, driving and electricity
The lifting device 56 that furnace shell frame connects under arc furnace, fascinate lower furnace shell, carries out tapping steel using the tapping hole of cupola well bottom.It will
The pouring molten steel for meeting subsequent technique requirement enters in steel ladle, after molten steel reaches predetermined quality in ladle, while retaining in cupola well
Scheduled residue molten steel, adjusts the lifting device connecting with lower furnace shell frame, electric arc furnaces is adjusted to smelting state.In electric arc furnaces
It can continue to carry out steel scrap addition and scrap steel preheating to vertical shaft 10 in tapping process, while the steel scrap for being preheating to predetermined temperature persistently adds
Enter cupola well, electrode realizes that raw scrap material is continuously added into the cupola well of electric arc furnaces 50 without being gone up and down and being powered off.
After the completion of a upper tapping steel, steel scrap is persistently preheated, and electrode continuous heating, steel scrap is continuously added into molten bath, benefit
Continue melting waste steel with the liquid molten steel of reservation, steel scrap persistently melts the bigger molten bath of formation and reaches with continuing growing for molten steel
Tapping steel can be carried out after to predetermined steel quality, temperature and ingredient, electric arc furnaces enters next smelting after the completion of tapping steel
Refine the period.Vertical shaft preheater may be implemented that Non-intermittent persistently feeds and scrap steel preheating, electric arc furnaces can be realized Non-intermittent steel scrap and add
Enter cupola well and the heating of electrode Non-intermittent, smelts qualified molten steel realization and tap and scheduled remaining molten steel stable period, after satisfaction
The demand of continuous process.It can be seen from the above description that the above embodiments of the present invention realized the following chievements:
The present invention can be realized the continuously pre-heating of steel scrap, while can be using Fuel lance and combustion-supporting oxygen rifle to the of smelting
One furnace steel scrap is preheated, and can be measured by flue gas analyzer and temperature measuring set to flue-gas temperature, feedback control
The input quantity of combustion-supporting oxygen rifle and Fuel lance, while carrying out combustion heat release for the fuel gas in flue gas, remove smoke in two
Dislike the generation of the Toxic of English.
The present invention captures the steel scrap of whereabouts using discharger, realizes steel scrap continuous heating, continues to fall automatically
Process eliminates the finger-shaped valve group of Classical Shaft Furnace preheater or the control mechanism of other forms, steel scrap furnace charge is avoided to fall
The drawbacks of impact of journey causes finger-shaped valve group leak that electric arc furnaces is caused to stop production.Steel scrap is carried out using discharger and haul trolley to add
Enter the feed way of electric arc furnaces, discharge rolls are installed on discharger top, realize that steel scrap is suitable using the rotation of discharge rolls and inclined surface
Smooth whereabouts realizes that the charging of raw scrap material acts using lesser driving force and structure.
The lifting of discharger can reduce impact of the steel scrap to discharge rolls, while can accurately adjust the discharging speed of steel scrap
Degree, due to being used cooperatively for guide roller and haul trolley, the feeding speed of haul trolley can be adjusted in real time, realize the constant speed of steel scrap
Degree or pace of change are continuously added to, and are advantageously implemented the stationarity of charging, are reduced the big ups and downs of bath surface, using unloading
The lifting of glassware and the cooperation of guide roller, while the addition of steel scrap can be stopped as needed, shaft furnace can be fully sealed in steel scrap
Discharge gate realizes that the stopping of steel scrap is added.
Haul trolley can have function of weighing, realize accurate record and the control of adding amount of scrap steel.
The above, only specific embodiments of the present invention cannot limit the range that invention is implemented with it, so it is equivalent
The displacement of component, or according to equivalent variations made by the invention patent protection scope and modification, should all still fall within what this patent was covered
Scope.In addition, between technical characteristic and technical characteristic in the present invention, between technical characteristic and technical solution, technical solution with
Use can be freely combined between technical solution.
Claims (13)
1. a kind of scrap preheater characterized by comprising
Vertical shaft (10), upper end are feed inlet, and the bottom side of the wall of the vertical shaft (10) is provided with discharge port；
Discharger (20), setting is in the vertical shaft (10) and can move along the vertical direction relative to the vertical shaft (10), institute
Stating discharger (20) has towards the inclined upper surface of the discharge port；
Haul trolley (30), can vibrate haul, and the arrival end of the haul trolley (30) is connect with the discharge port；
Guide roller (40) is set to the discharge port and is located on the upside of the arrival end of the haul trolley (30), the guide roller
(40) aperture of the discharge port can be controlled.
2. scrap preheater according to claim 1, which is characterized in that the guide roller (40) includes telescopic rod
(41), oscillating rod (42) and guide roller (43), one end of the telescopic rod (41) and the case frame of the vertical shaft (10)
(16) hingedly, telescopic rod (41) other end and the center of rotation of the guide roller (43) are hinged, the oscillating rod (42)
One end and the vertical shaft (10) case frame (16) hingedly, oscillating rod (42) other end and the guide roller (43)
Center of rotation it is hinged, and one end of the telescopic rod (41) and one end of the oscillating rod (42) shift to install.
3. scrap preheater according to claim 1, which is characterized in that the upper end of the discharger (20) is provided with more
A discharge rolls (23), multiple discharge rolls (23) uniformly at intervals and form the upper surfaces of the discharger (20).
4. scrap preheater according to claim 3, which is characterized in that the discharger (20) is towards the discharge port
Side wall on be provided with the smoke ventilator (22) passed through for pre- hot fume, the smoke ventilator (22) is described for being separately connected
The entrance of the upper surface top and electric arc furnaces (50) of discharger (20).
5. scrap preheater according to claim 4, which is characterized in that on the downside of the feed inlet of the vertical shaft (10)
It is provided with flue (11), flue gas analysis component (12) and temperature measurement component is provided at the flue (11)
(13)。
6. scrap preheater according to claim 1, which is characterized in that the scrap preheater further includes elevator
Structure (21), the elevating mechanism (21) are arranged the lower section in the discharger (20) and the discharger (20) can be driven along perpendicular
Histogram is moved to relative to the vertical shaft (10).
7. scrap preheater according to claim 1, which is characterized in that be provided with Fuel lance in the vertical shaft (10)
(14) and combustion-supporting oxygen rifle (15), the Fuel lance (14) and the combustion-supporting oxygen rifle (15) are respectively positioned below the feed inlet simultaneously position
Above the discharger (20).
8. scrap preheater according to claim 1, which is characterized in that set at the feed inlet of the vertical shaft (10)
It is equipped with the feeding assembly for charging.
9. scrap preheater according to claim 8, which is characterized in that the feeding assembly includes:
The miner diameter end of shaft furnace hopper (61), structure funnel-shaped, the shaft furnace hopper (61) is connect with the feed inlet, institute
State shaft furnace hopper (61) bigger diameter end be located at along the vertical direction the shaft furnace hopper (61) miner diameter end top；
First drop bar (62) is arranged the bigger diameter end in the shaft furnace hopper (61) and can control the shaft furnace hopper
(61) opening and closing of bigger diameter end；
Second drop bar (63) is arranged the miner diameter end in the shaft furnace hopper (61) and can control the shaft furnace hopper
(61) opening and closing of miner diameter end, and first drop bar (62) and second drop bar (63) being capable of self-movements.
10. scrap preheater according to claim 8, which is characterized in that the feeding assembly includes:
It transmits guide rail (71), is obliquely installed and connects the feed inlet and ground material heap；
Hopper (72) is arranged on the transmission guide rail (71) and can move with the transmission guide rail (71), the hopper
(72) it can feed to the feed inlet.
11. a kind of arc-melting equipment, including electric arc furnaces (50) and scrap preheater, which is characterized in that the scrap steel preheating
Device is scrap preheater described in any one of claims 1 to 10, the entrance of the electric arc furnaces (50) and the haul
The outlet of trolley (30) connects.
12. a kind of pre-heating mean, which comprises the following steps:
Discharger (20) is risen to setting extreme higher position by step 10, and steel scrap is added into vertical shaft (10) by feed inlet and is formed
Steel scrap accumulation area；
Step 20, unlatching Fuel lance (14) and combustion-supporting oxygen rifle (15) heat the steel scrap accumulation area；
Step 30, when the steel scrap accumulation area is heated to set temperature, reducing the discharger (20) accumulates the steel scrap
Area is connect with discharge port, while being opened haul trolley (30) and being transported the steel scrap into electric arc furnaces (50)；
Step 40, as the electric arc furnaces (50) carries out melting to the steel scrap, a large amount of height can be generated in the electric arc furnaces (50)
Warm flue gas, the high-temperature flue gas are provided with along the smoke ventilator (22) of the discharger (20) and the upper end of the discharger (20)
Multiple roller gaps preheat the steel scrap accumulation area；
Step 50 adjusts the Fuel lance by the measurement result of flue gas analysis component (12) and temperature measurement component (13)
(14) and the aperture of the combustion-supporting oxygen rifle (15)；
Step 60, after the electric arc furnaces (50) interior molten steel reaches sets requirement, to the electric arc furnaces (50) carry out tapping steel；
Step 70 circuits sequentially the step 10, the step 30, the step 40, the step 50 and the step 60.
13. pre-heating mean according to claim 12, which is characterized in that in the step 30, pass through the discharger
(20) and guide roller (40) controls the producing steel velocity of the discharge port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910705777.0A CN110388830B (en) | 2019-08-01 | 2019-08-01 | Scrap steel preheating device, arc melting equipment and preheating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910705777.0A CN110388830B (en) | 2019-08-01 | 2019-08-01 | Scrap steel preheating device, arc melting equipment and preheating method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110388830A true CN110388830A (en) | 2019-10-29 |
| CN110388830B CN110388830B (en) | 2024-02-06 |
Family
ID=68288081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910705777.0A Active CN110388830B (en) | 2019-08-01 | 2019-08-01 | Scrap steel preheating device, arc melting equipment and preheating method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110388830B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110923394A (en) * | 2019-11-28 | 2020-03-27 | 中冶京诚工程技术有限公司 | Steel-making equipment and steel-making method |
| CN113203284A (en) * | 2021-04-15 | 2021-08-03 | 江苏迅隆铝业有限公司 | Aluminum alloy continuous melting furnace for regenerating resin sand by using waste heat |
| CN113957201A (en) * | 2021-11-15 | 2022-01-21 | 中冶京诚工程技术有限公司 | Method for preheating magnetic suspension scrap steel and electric arc furnace steelmaking device capable of preheating magnetic suspension scrap steel |
| CN116929067A (en) * | 2023-09-19 | 2023-10-24 | 沈阳明腾科技有限公司 | Automatic filling device and method for aluminum melting furnace |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020009118A1 (en) * | 1999-07-08 | 2002-01-24 | Nkk Corporation, 1-2, Marunouchi 1-Chome, Chiyoda-Ku, Tokyo, Japan | Apparatus for arc-melting cold iron source and method threof |
| CN1926397A (en) * | 2003-11-27 | 2007-03-07 | 福斯技术股份公司 | Charging device, especially charging stock preheater |
| CN203100422U (en) * | 2013-02-22 | 2013-07-31 | 中冶赛迪工程技术股份有限公司 | Electric-arc furnace continuously feeding device preheated by smoke |
| CN108866270A (en) * | 2018-07-09 | 2018-11-23 | 中冶京诚工程技术有限公司 | A kind of steelmaking equipment |
| CN210802068U (en) * | 2019-08-01 | 2020-06-19 | 中冶京诚工程技术有限公司 | Scrap preheating device and electric arc melting equipment |
-
2019
- 2019-08-01 CN CN201910705777.0A patent/CN110388830B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020009118A1 (en) * | 1999-07-08 | 2002-01-24 | Nkk Corporation, 1-2, Marunouchi 1-Chome, Chiyoda-Ku, Tokyo, Japan | Apparatus for arc-melting cold iron source and method threof |
| CN1926397A (en) * | 2003-11-27 | 2007-03-07 | 福斯技术股份公司 | Charging device, especially charging stock preheater |
| CN203100422U (en) * | 2013-02-22 | 2013-07-31 | 中冶赛迪工程技术股份有限公司 | Electric-arc furnace continuously feeding device preheated by smoke |
| CN108866270A (en) * | 2018-07-09 | 2018-11-23 | 中冶京诚工程技术有限公司 | A kind of steelmaking equipment |
| CN210802068U (en) * | 2019-08-01 | 2020-06-19 | 中冶京诚工程技术有限公司 | Scrap preheating device and electric arc melting equipment |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110923394A (en) * | 2019-11-28 | 2020-03-27 | 中冶京诚工程技术有限公司 | Steel-making equipment and steel-making method |
| CN110923394B (en) * | 2019-11-28 | 2023-11-10 | 中冶京诚工程技术有限公司 | Steelmaking apparatus and steelmaking method |
| CN113203284A (en) * | 2021-04-15 | 2021-08-03 | 江苏迅隆铝业有限公司 | Aluminum alloy continuous melting furnace for regenerating resin sand by using waste heat |
| CN113957201A (en) * | 2021-11-15 | 2022-01-21 | 中冶京诚工程技术有限公司 | Method for preheating magnetic suspension scrap steel and electric arc furnace steelmaking device capable of preheating magnetic suspension scrap steel |
| CN116929067A (en) * | 2023-09-19 | 2023-10-24 | 沈阳明腾科技有限公司 | Automatic filling device and method for aluminum melting furnace |
| CN116929067B (en) * | 2023-09-19 | 2023-11-24 | 沈阳明腾科技有限公司 | Automatic filling device and method for aluminum melting furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110388830B (en) | 2024-02-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110388830A (en) | Scrap preheater, arc-melting equipment and pre-heating mean | |
| CN108642237A (en) | A kind of steelmaking equipment | |
| CN110923394B (en) | Steelmaking apparatus and steelmaking method | |
| CN108866270A (en) | A kind of steelmaking equipment | |
| CN105202907B (en) | Scrap steel preheating type electric arc furnaces and the method for improving side wall charging electric arc stove heat cold-zone | |
| SU1496637A3 (en) | Method and apparatus for continuous refining of steel in electric furnace | |
| CN102433450B (en) | Oxygen-enriched side-blown reduction molten pool smelting furnace and method for smelting tin by using tin-enriched complex material in smelting furnace | |
| CN103954133B (en) | A kind of middle frequency furnace reinforced device of fluxing continuously | |
| CA2755845C (en) | Steel production facility, method of steelmaking and method using electric energy therein | |
| CN201787807U (en) | Vertical high-efficiency energy-saving copper melting furnace with premixing combustion system | |
| CN208472142U (en) | A kind of steelmaking equipment | |
| CN211367630U (en) | Steel-smelting equipment | |
| CN103436703B (en) | Total-oxygen side-blown reduction smelting converter | |
| CN201648490U (en) | Lead-containing material smelting device | |
| CN209227012U (en) | A kind of steel-smelting device of continuously pre-heating steel scrap | |
| CN104357655B (en) | Ore reduces continuously and send steel-smelting device with heat | |
| CN115615188B (en) | Oxygen-enriched double-chamber molten pool smelting side-blown furnace and method for extracting iron and quenching molten steel slag | |
| CN210802068U (en) | Scrap preheating device and electric arc melting equipment | |
| CN108624739B (en) | Steelmaking equipment and smelting method for steelmaking by using scrap steel | |
| CN103333979B (en) | Electricity coal method molten point reduction iron production system and technical process thereof | |
| CN101749931A (en) | Smelting furnace | |
| CN208472141U (en) | A kind of steelmaking equipment | |
| CN101644535A (en) | Smelting furnace | |
| CN104215064B (en) | Straight tunnel cave for Iron Ore Powder direct-reduction | |
| US11391515B2 (en) | Convertible metallurgical furnace and modular metallurgical plant comprising said furnace for conducting production processes for the production of metals in the molten state, in particular steel or cast iron |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |