CN208869612U - A kind of device of reduction treatment steel scrap - Google Patents
A kind of device of reduction treatment steel scrap Download PDFInfo
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- CN208869612U CN208869612U CN201821504339.5U CN201821504339U CN208869612U CN 208869612 U CN208869612 U CN 208869612U CN 201821504339 U CN201821504339 U CN 201821504339U CN 208869612 U CN208869612 U CN 208869612U
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- reduction furnace
- steel scrap
- reduction
- feeding
- pipeline
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 116
- 239000010959 steel Substances 0.000 title claims abstract description 116
- 230000009467 reduction Effects 0.000 title claims abstract description 81
- 238000010891 electric arc Methods 0.000 claims abstract description 28
- 239000007789 gas Substances 0.000 claims abstract description 28
- 239000011261 inert gas Substances 0.000 claims abstract description 12
- 239000000654 additive Substances 0.000 claims description 14
- 230000000996 additive effect Effects 0.000 claims description 14
- 238000003466 welding Methods 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 34
- 229910052742 iron Inorganic materials 0.000 abstract description 17
- 238000000034 method Methods 0.000 abstract description 14
- 230000002411 adverse Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 238000002844 melting Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 239000003034 coal gas Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 239000003546 flue gas Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 238000009628 steelmaking Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 241000282485 Vulpes vulpes Species 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 230000003749 cleanliness Effects 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000009845 electric arc furnace steelmaking Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- 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
Landscapes
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
A kind of device of reduction treatment steel scrap, including feeding system, reduction furnace, main pusher, the feeding pipeline of the feeding system is connected to the lower part of reduction furnace entrance, main pusher is arranged in reduction furnace inlet end portion, the top of reduction furnace entrance is provided with reducing gas entrance, the outlet of the reduction furnace connects electric arc furnaces, and wind deflector is equipped between the reduction furnace and electric arc furnaces, and inert gas entrance is equipped on the feeding pipeline.It can will be preheated into the steel scrap before electric arc furnaces or converter using the method and device thereof of the utility model, and the iron scale on steel scrap surface is thoroughly restored, eliminate iron scale to the adverse effect of melting molten steel.
Description
Technical field
The utility model relates to metallurgical technology field more particularly to a kind of devices of reduction treatment steel scrap.
Background technique
Steel scrap is the reproducible raw material resources of generation during steel production and consumption, and money can be improved using steel scrap steel-making
Source utilization rate, energy-saving and emission-reduction reduce the exploitation of proto culture, improve steel and produce potential, realize green production.Statistics table
It is bright, 0.4 ton of coke or 1 ton of raw coal mostly can be saved using one ton of steel scrap, the consumption of 1.7 tons of concentrate powders is reduced, reduces by 4.3 tons of raw ores
Exploitation, the discharge for reducing by 1.6 tons of carbon dioxide (reduce CO2Discharge is 58%).Currently, the annual steel-making consumption steel scrap about 500,000,000 in the whole world
Ton, wherein the utilization rate of developed country is up to 30%~50%, and China consumes about 80,000,000 tons, and steel scrap utilization rate only has 11%
Left and right.Lower one of the reason of steel scrap utilization rate is to be difficult to produce high-quality steel as the electric steel of raw material using steel scrap.Contain in steel scrap
There are the various elements such as Al, Sn, As, Zn, Pb, Cu, Ni, Cr, Se, S, P, comparison of ingredients is complicated, increases smelting difficulty.In addition,
In steel scrap more containing the foul content in the fouls such as a large amount of iron scale, grease and moisture, especially steel scrap bits and scrap iron skin
Height seriously increases the hydrogen-oxygen content in smelting process inside molten steel, improves steel treatment cost, reduces the cleaning of molten steel
Degree, reduces the quality of steel.
Carrying out processing to steel scrap can be improved steel quality, improve the yield of electric furnace, reduce pollution, save power consumption and electrode
Consumption, to reduce production cost.Scrap steel preheating is a kind of typical steel scrap processing mode, is continuously added with existing Consteel
Expect scrap preheater it is similar, patent document US5400358, US2001055739, US2012104668A1,
US2015153107、WO2007006558、WO2014127597、JPH0727489、JP2015525866、JP2008002736A、
US19920959733, EP2112449, EP0744585 etc. disclose a kind of horizontal continuous charging scrap preheater, benefit
Heat exchange is carried out by horizontally disposed tunnel and steel scrap with high-temp waste gas, by scrap steel preheating to 400-600 DEG C, realizes that waste heat returns
It receives and utilizes.But this kind of technique there are steel scrap temperature uneven, channel leaks out the problems such as serious, production line is too long, occupied area is excessive.
Similar to Fuchs shaft furnace preheating device, JP2014503780, JP2014502717 etc. disclose a kind of typical vertical furnace type steel scrap
Preheating device, steel scrap are packed into the red-hot flue gas risen in shaft furnace, with electric furnace from top and go in the same direction, and continuous with steel scrap is melted
Change, the steel scrap being preheated in stock column constantly moves down, and the thermal efficiency is higher, but this kind of type of furnace is more demanding to the lumpiness of steel scrap, practical
Blocking phenomenon easily occurs in operation, accident treatment is sufficiently complex.
Chinese patent 201310131182.1,201310056573.1,201711022403.6,201010270535.2,
201010172304.8,201710643359.4 etc. a kind of horizontal scrap preheater is all disclosed, such device utilizes electricity
The high-temperature flue gas that fire grate goes out preheats steel scrap, and it is pre- that Chinese patent 201110354275.1 discloses a kind of electric furnace steel making steel scrap
The impurity metallic elements extraction element and method of heat, can recycle the various metals in steel scrap using the device and method, and right
Steel scrap is preheated, and in warm into steel scrap coal injection, improve the preheating temperature of steel scrap.Chinese patent
201510572343.X uses horizontal scrap preheater, using coal gas to scrap heating, can by scrap heating higher temperature, but
Preheating device structure is more complicated.
Either existing Consteel horizontal continuous charging scrap preheater, or using Fuchs as the perpendicular of representative
Furnace preheating device, preheats steel scrap in the form of making steel exhaust gas or external heat source, when scrap steel preheating to higher temperature
When, steel scrap oxidation is than more serious, and after adding electric furnace, clinker production quantity is big, and molten steel air content increases, metal utilization decline.?
In steel scrap treatment process, if it is possible to while preheating scrap, the iron scale bring on steel scrap surface be mitigated or eliminated not
Benefit influences, and will provide basis to smelt pure electric steel.
Utility model content
The purpose of the utility model is to provide a kind of devices of reduction treatment steel scrap, can will enter electric arc using the device
Steel scrap before furnace or converter is preheated, and the iron scale on steel scrap surface is thoroughly restored, and eliminates iron scale to steel-smelting
The adverse effect of water.
To achieve the above object, the utility model is implemented with the following technical solutions:
A kind of device of reduction treatment steel scrap, including feeding system, reduction furnace, main pusher, the feeding system it is upper
Pipe material is connected to the lower part of reduction furnace entrance, and main pusher is arranged in reduction furnace inlet end portion, on the top of reduction furnace entrance
It is provided with reducing gas entrance, the outlet of the reduction furnace connects electric arc furnaces, gear is equipped between the reduction furnace and electric arc furnaces
Aerofoil is equipped with inert gas entrance on the feeding pipeline.
The reduction furnace includes furnace shell, gas piping, burner, reduction furnace body, and the furnace shell is enclosed in the outer of reduction furnace body
Portion forms burner hearth between furnace shell and reduction furnace body, and burner is connected with gas piping, and burner, which passes through furnace shell, to be goed deep into burner hearth.
The reduction furnace body is made of heat resisting steel welding, and section is rectangular or round, restores furnace body slant setting, outlet
End is directed at the suitable for reading of electric arc furnaces, or protrudes into electric arc furnaces from electric arc furnaces side.
The feeding system include charging pusher, the feed pipe being laterally arranged, additive bin, feeding pusher,
One end of vertically arranged feeding pipeline, the feed pipe is connected to feeding pipeline, and charging is arranged in the other end of feed pipe
Blanking pipeline is arranged in the upper end of feed pipe in pusher, and additive bin is mounted on the upper end of blanking pipeline, additive bin with
Blanking baffle is provided between blanking pipeline, the bottom end of feeding pipeline is arranged in the feeding pusher, and the inert gas enters
The side of feeding pipeline lower part is arranged in mouth.
Compared with prior art, the beneficial effects of the utility model are:
(1) the utility model uses reducibility gas at metallic iron, can eliminate the scale reduction on steel scrap surface useless
Oxygen, steam and crystallization water for containing in steel surface iron scale etc. to the adverse effect of molten steel, especially comparison surface area compared with
Greatly, the higher steel scrap bits of iron scale content, scrap iron skin etc. can thoroughly eliminate scale on surface to the adverse effect of molten steel, drop
The gas content in the quantity of slag and steel in low smelting process can provide the steel scrap of clean non-oxidation to electric arc furnaces, to improve molten
Make steel the cleanliness of water；
(2) the utility model scrap heating to high temperature can be improved into furnace while restoring steel scrap scale on surface
The temperature of steel scrap improves the production efficiency and yield of electric arc furnaces, can provide temperature constant steel scrap to electric arc furnaces, reduce steel scrap temperature
Impact of the degree variation to electric arc furnaces, saves electrode；
(3) steel scrap reduction treatment apparatus structure provided by the utility model is simple, and equipment input cost is low, can be continuously to electricity
Arc furnace provides clean steel scrap.
Detailed description of the invention
Fig. 1 is a kind of main sectional view of the device of reduction treatment steel scrap；
Fig. 2 is the composition figure of blanking pipeline.
In figure: 1, furnace shell, 2, gas piping, 3, burner, 4, reduction furnace body, 5, reducing gas entrance, 6, main pusher, 7,
Feeding pipeline, 8, additive bin, 9, blanking pipeline, 9-1 blanking shaft, 9-2 blanking baffle, 10, charging pusher, 11, charging
Pipeline, 12, feeding pusher, 13, inert gas import, 14, flue, 15, support beam, 16, wind deflector, 17, electric arc furnaces.
Specific embodiment
It elaborates with reference to the accompanying drawing to the utility model, but the scope of the utility model is not limited only to down
The embodiment stated.
A kind of device of reduction treatment steel scrap, including feeding system, reduction furnace, main pusher 6, the feeding system it is upper
Pipe material 7 is connected to the lower part of reduction furnace entrance, and main pusher 6 is arranged in reduction furnace inlet end portion, in the upper of reduction furnace entrance
Portion is provided with reducing gas entrance 5, and the outlet of the reduction furnace connects electric arc furnaces 17, between the reduction furnace and electric arc furnaces 17
Equipped with wind deflector 16, wind deflector 16 is mounted on reduction furnace by articulated shaft, is naturally drooped by gravity, is blocked in reduction furnace
Gas is equipped with inert gas entrance 13 on the feeding pipeline 7.
The reduction furnace includes furnace shell 1, gas piping 2, burner 3, reduction furnace body 4, and the furnace shell 1 is enclosed in reduction furnace body
4 outside forms burner hearth between furnace shell 1 and reduction furnace body 4, and burner 3 is connected with gas piping 2, and it is deep that burner 3 passes through furnace shell 1
Enter in burner hearth.
Burner 3 burn coal gas, will reduction furnace body 4 be heated to high temperature, the lower section of furnace shell 1 is provided with flue 14, for from
Exhaust gas after burner hearth discharge burning；It is supported in the high temperature section of reduction furnace body 4 using support beam 15, the both ends of support beam 15 are worn
Furnace shell 1 is crossed to be erected on steel truss；The arrival end closing of furnace body 4 is restored, main pusher 6 passes through the arrival end of reduction furnace body 4, by
Common Hydraulic Cylinder, or pushed by motor drive screw rod, along reduction 4 axially reciprocating of furnace body；Reducibility gas passes through
Reducing gas entrance 5 enters reduction furnace body 4, restores to the iron scale on steel scrap surface；Under the arrival end of reduction furnace body 4
A feeding pipeline 7 is arranged in portion, for transmitting steel scrap into reduction furnace body 4, uses spiral shell between feeding pipeline 7 and reduction furnace body 4
It tethers and connects.
The reduction furnace body 4 is made of heat resisting steel welding, and section is rectangular or round, restores 4 slant setting of furnace body, out
Mouth end is directed at the suitable for reading of electric arc furnaces 17, or protrudes into electric arc furnaces 17 from 17 side of electric arc furnaces.Support beam 15 also uses heat-resisting steel
At.
The feeding system includes feeding pusher 10, the feed pipe 11 being laterally arranged, additive bin 8, feeding to push away
Steel machine 12, vertically arranged feeding pipeline 7, one end of the feed pipe 11 are connected to feeding pipeline 7, feed pipe 11 it is another
One end setting charging pusher 10, is arranged blanking pipeline 9 in the upper end of feed pipe 11, additive bin 8 is mounted on blanking pipeline 9
Upper end, be provided with blanking baffle 9-2 between additive bin 8 and blanking pipeline 9, the feeding pusher 12 is arranged in feeding
The side of 7 lower part of feeding pipeline is arranged in the bottom end of pipeline 7, the inert gas entrance 13.
The lower end closed of feeding pipeline 7, feeding pusher 12 pass through the lower end of feeding pipeline 7, are pushed away by common hydraulic cylinder
It is dynamic, or pushed by motor drive screw rod, along the axially reciprocating of feeding pipeline 7.One is opened up in the side of 7 lower part of feeding pipeline
A inert gas import 13, for being passed through inert gas or nitrogen in upward pipe material 7.Surrounding in 7 lower part of feeding pipeline connects
It is connected to 1-4 feed pipe 11, for transmitting steel scrap in upward pipe material 7, spiral shell is used between feed pipe 11 and feeding pipeline 7
It tethers and connects.The arrival end of feed pipe 11 is closed, and charging pusher 10 passes through the arrival end of feed pipe 11, by common hydraulic
Cylinder pushes, or is pushed by motor drive screw rod, along the axially reciprocating of feed pipe 11.In the upper end of 11 entrance of feed pipe
One blanking pipeline 9 is installed, is connected by screw bolts between blanking pipeline 9 and feed pipe 11, blanking pipeline 9 it is suitable for reading again with it is upper
Funnel 8 is bolted, and is conveyed through the steel scrap come for accepting magnetic disc suspending.Also be installed in blanking pipeline 9 blanking shaft 9-1 and
Blanking baffle 9-2, blanking baffle 9-2 are rotated around blanking shaft 9-1, can seal blanking pipeline 9 when blanking baffle 9-2 is lifted,
Steel scrap can be fallen in feed pipe 11 when blanking baffle 9-2 decline.
The cross sectional shape of feeding pipeline 7, feed pipe 11 and blanking pipeline 9 is identical as the reduction cross sectional shape of furnace body, adopts
It is made of the welding of common structural alloy steel.
A kind of device of reduction treatment steel scrap of the utility model is additionally provided with measurement of furnace temperature instrument, measuring cell device, gas componant
Measuring instrument and the truss structure for supporting furnace body.
A kind of method of reduction treatment steel scrap, method includes the following steps:
Raw material steel scrap prepares: the raw material steel scrap that recycling comes being sorted, is more than the steel scrap of furnace body size to monomer size
It is split, enters furnace body convenient for steel scrap, cutting class steel scrap is sieved, the soil in steel cuttings is removed.
1) furnace body preheat: using coal gas by restore furnace body be heated to 200 DEG C -1250 DEG C, by inert gas entrance 13 to
Inert gas or nitrogen, the sky in discharge line are filled in feeding pipeline 7, blanking pipeline 9, feed pipe 11 and reduction furnace body 4
Gas；Additive bin 8 is sealed by closing blanking baffle 9-2, prevents air from entering feeding system from additive bin 8；
2) feeding: being hung onto steel scrap in additive bin 8 using magnetic disc suspending, opens blanking baffle 9-2, and steel scrap passes through blanking
It is fallen under pipeline 7 in feed pipe 11, closes blanking baffle 9-2；Starting charging pusher 10, promotes feeding pipeline 7 for steel scrap
In, restart feeding pusher 12, steel scrap is boosted and is restored in furnace body 4；At this point, starting main pusher 6, furnace body will be restored
Steel scrap in 4 pushes ahead a distance；Later, main pusher 6, feeding pusher 12, charging pusher 10 successively back to
Start position, is pushed away steel operation next time；
3) scrap heating restores: the steel scrap being pushed into reduction furnace body 4 is gradually transported to outlet in reduction furnace body 4 from entrance
Dynamic, when steel scrap moves to the bringing-up section of reduction furnace body 4, steel scrap is heated to 200 DEG C -1250 DEG C, meanwhile, enter from reducing gas
Reducibility gas is passed through in reduction furnace body 4 by mouth 5, restores the iron scale on steel scrap surface；
4) steel scrap falls into electric arc furnaces 17: repeating step 2), is hung onto steel scrap in additive bin 8 using magnetic disc suspending, then
Blanking baffle 9-2 is opened, is fallen in feed pipe 11 under steel scrap, starting charging pusher 10, steel scrap is pushed into feeding pipeline 7
In, start feeding pusher 12, steel scrap is pushed into reduction furnace body 4, restart main pusher 6, steel scrap by step by step from
The arrival end of reduction furnace body 4 is pushed to outlet end, falls into electric arc furnaces 17 after opening wind deflector 16；At this point, exhaust gas is from reduction furnace
The outlet of body 4 is discharged, and the after-combustion being ignited, waste heat is recycled together with 17 flue gas of electric arc furnaces.
The reducibility gas is the mixed gas of hydrogen or carbon monoxide or hydrogen and carbon monoxide.
Embodiment 1:
The cheet scrap that iron scale is contained on surface is reduced into clean steel disc using the method and apparatus of the utility model,
Specific implementation process is as follows:
First cheet scrap is rinsed, removes the soil on steel disc surface；950 DEG C are heated to by furnace body 4 is restored using coal gas, to also
It is filled with industrial nitrogen in former furnace body 4, the air in entire pipeline is discharged；Blanking baffle 9-2 is opened, cheet scrap is put into feed pipe
In road 11, blanking shaft 9-1 is rotated, closes blanking baffle 9-2；Starting charging pusher 10, promotes feeding pipeline 7 for cheet scrap
In, start feeding pusher 12, cheet scrap is boosted and is restored in furnace body 4；At this point, restarting main pusher 6, by reduction furnace
Cheet scrap in body 4 is pushed ahead to heating zone；Cheet scrap is heated to 950 DEG C, by reducing gas entrance 5 by plant hydrogen
It is passed through in reduction furnace body 4, by reduction in 2-5 minutes, the iron scale on cheet scrap surface, at metallic iron, was opened again by hydrogen reduction
Move main pusher 6, cheet scrap be pushed to outlet end, dropped into electric arc furnaces 17 after opening wind deflector 16, the gas after reaction from
The entrance flow direction of reduction furnace body 4 is exported and is burned off.
Above-mentioned specific embodiment shows can be by the scale reduction on steel scrap surface at metal using the utility model
Iron improves the temperature that steel scrap is added before electric arc furnaces, to improve the cleanliness of molten steel, reduces electric-arc furnace steelmaking cost.This is practical
Novel method and device has many advantages, such as that Processes and apparatus structure is simple, steel scrap handles high-quality, energy-saving and emission-reduction.It needs to illustrate
, these examples are only some exemplary applications that the device of the utility model provides, and should not be understood as weighing the utility model
The limitation of the claimed range of benefit.
Claims (4)
1. a kind of device of reduction treatment steel scrap, which is characterized in that including feeding system, reduction furnace, main pusher, the feeding
The feeding pipeline of system is connected to the lower part of reduction furnace entrance, and main pusher is arranged in reduction furnace inlet end portion, enters in reduction furnace
Mouthful top be provided with reducing gas entrance, the outlet of the reduction furnace connects electric arc furnaces, the reduction furnace and electric arc furnaces it
Between be equipped with wind deflector, on the feeding pipeline be equipped with inert gas entrance.
2. a kind of device of reduction treatment steel scrap according to claim 1, which is characterized in that the reduction furnace includes furnace
Shell, gas piping, burner, reduction furnace body, the furnace shell are enclosed in the outside of reduction furnace body, the shape between furnace shell and reduction furnace body
At burner hearth, burner is connected with gas piping, and burner, which passes through furnace shell, to be goed deep into burner hearth.
3. a kind of device of reduction treatment steel scrap according to claim 2, which is characterized in that the reduction furnace body is by resistance to
The welding of hot steel is made, and section is rectangular or round, restores furnace body slant setting, and outlet end is directed at the suitable for reading of electric arc furnaces, or from electricity
Electric arc furnaces is protruded into arc furnace side face.
4. a kind of device of reduction treatment steel scrap according to claim 1, which is characterized in that the feeding system includes
Feed pusher, the feed pipe being laterally arranged, additive bin, feeding pusher, vertically arranged feeding pipeline, the charging
One end of pipeline is connected to feeding pipeline, and the other end setting charging pusher of feed pipe is arranged in the upper end of feed pipe
Blanking pipeline, additive bin are mounted on the upper end of blanking pipeline, and blanking baffle is provided between additive bin and blanking pipeline,
The bottom end of feeding pipeline is arranged in the feeding pusher, and the side of feeding pipeline lower part is arranged in the inert gas entrance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821504339.5U CN208869612U (en) | 2018-09-14 | 2018-09-14 | A kind of device of reduction treatment steel scrap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821504339.5U CN208869612U (en) | 2018-09-14 | 2018-09-14 | A kind of device of reduction treatment steel scrap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208869612U true CN208869612U (en) | 2019-05-17 |
Family
ID=66467646
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821504339.5U Expired - Fee Related CN208869612U (en) | 2018-09-14 | 2018-09-14 | A kind of device of reduction treatment steel scrap |
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| Country | Link |
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| CN (1) | CN208869612U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108842032A (en) * | 2018-09-14 | 2018-11-20 | 辽宁科技大学 | A kind of device and method of reduction treatment steel scrap |
-
2018
- 2018-09-14 CN CN201821504339.5U patent/CN208869612U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108842032A (en) * | 2018-09-14 | 2018-11-20 | 辽宁科技大学 | A kind of device and method of reduction treatment steel scrap |
| CN108842032B (en) * | 2018-09-14 | 2023-09-29 | 辽宁科技大学 | Device and method for reduction treatment of scrap steel |
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Granted publication date: 20190517 |