CN108398030A - A kind of scrap steel preheating system - Google Patents

A kind of scrap steel preheating system Download PDF

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Publication number
CN108398030A
CN108398030A CN201810411034.8A CN201810411034A CN108398030A CN 108398030 A CN108398030 A CN 108398030A CN 201810411034 A CN201810411034 A CN 201810411034A CN 108398030 A CN108398030 A CN 108398030A
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CN
China
Prior art keywords
kiln
steel
scrap
furnace body
burner
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.)
Pending
Application number
CN201810411034.8A
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Chinese (zh)
Inventor
赵猛
张振锋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Xuan Ding Metallurgical Technology Co Ltd
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Shanghai Xuan Ding Metallurgical Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shanghai Xuan Ding Metallurgical Technology Co Ltd filed Critical Shanghai Xuan Ding Metallurgical Technology Co Ltd
Priority to CN201810411034.8A priority Critical patent/CN108398030A/en
Publication of CN108398030A publication Critical patent/CN108398030A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D13/00Apparatus for preheating charges; Arrangements for preheating charges
    • F27D13/002Preheating scrap

Abstract

The present invention relates to a kind of scrap steel preheating systems, including kiln, conveying device, mounting bracket, pusher structure and burner.Wherein, kiln is fixed on by fastener on mounting bracket, and burner is mounted on kiln, for being preheated to steel scrap;The left end of kiln is openable and closable discharge port, and right end is to push away steel mouth, and the folding for pushing away steel mouth is controlled by pusher structure, and the side of kiln is provided with openable and closable feed inlet;Conveying device is for steel scrap to be put into from feed inlet in kiln;Pusher structure is fixed on mounting bracket, is done reciprocating linear motion, for preheated steel scrap to be released kiln.The application directly preheats steel scrap by kiln, and is released preheated steel scrap using pusher, and pusher greatly shortens the time that steel scrap is taken out out of kiln, time timing in seconds, to realize the continuously pre-heating to steel scrap.

Description

A kind of scrap steel preheating system
Technical field
The present invention relates to a kind of system for scrap steel preheating, more particularly to a kind of continuity scrap steel preheating system.
Background technology
World Steel association data show that global 16.912 hundred million tons of iron and steel output in 2017 increases by 5.3% on a year-on-year basis, Asia is annual Crude steel yield reaches 11.625 hundred million tons, increases by 5.4% on a year-on-year basis, and the crude steel yield of India is 1.014 hundred million tons, increases by 6.2% on a year-on-year basis, The crude steel yield of South Korea is 71,100,000 tons, increases by 3.7% on a year-on-year basis;The crude steel total output of European Union area (28 state) is 1.687 hundred million tons, Increase by 4.1% on a year-on-year basis;North America area crude steel total output in 2017 is 1.16 hundred million tons, increases by 4.8% on a year-on-year basis.World steel is assisted It would be expected that global Steel demand in 2018 will increase by 1.6% to 17.2 hundred million ton once again, global Steel demand will occur in periodicity Row.
From the perspective of iron ore demand, about 10.67 hundred million tons of China's consumption iron ore finished product mine in 2012 increases on year-on-year basis Long 4.6%;Iron ore finished product mine demand reaches 11.1 hundred million tons within 2013, wherein imported Fe ore demand proportion will Maintain 60% or more level.
From data above, it can be seen that, China is iron ore demand and the maximum country of output of steel in the world.From theory On say, China is iron ore maximum buyer in the world, it appears that should have the right for determining product price, but true really not so. On the one hand it is because iron ore imports amount also is keeping growing at top speed, is on the other hand that the resource chip of opponent is increasing, two The contradiction of person is very prominent, directly results in domestic steel production and is limited by the supply of International Iron Ore stone.Therefore, from current world's iron ore From the point of view of in stone price control force, in the status passed into others' hands or lacked on Chinese practice.It is so huge in annual output of steel, and to iron The raw material such as ore do not have under the unfavorable conditions of pricing right, how steel scrap or recycling steel part are used, to be promoted Production capacity, part reduction become China Steel enterprise to the dependence of iron ore, reduction production cost, the price advantage etc. for promoting product Industry urgent problem.
Currently, blast furnace generate molten iron be delivered directly to converter, the molten iron into converter blend certain alloying element into Row is smelted, and molten steel is become;In order to improve molten steel yield, the usual way of iron and steel enterprise is directly in converter plus steel scrap, still Because steel scrap is room temperature, needs the absorption heat in converter to become liquid molten iron, extend the period of pneumatic steelmaking, reduce production Amount;And after steel scrap is preheated, it is put into and becomes time of liquid molten iron in converter and just substantially reduce, not only increase molten steel production Amount, also solves waste steel recycling problem.In the prior art, scrap steel preheating is typically that the steel scrap of room temperature is put into the containers such as hopper In, then the container is hung in kiln by driving and is preheated, finally uses driving by preheated steel scrap together with container one It rises and hangs out.Which has the following problems:
(1) scrap heating is intermittent.It after preheating, needs to carry out next round preheating after hanging out container again, during this Interval time is longer, and heat loss is big, thus the pre- thermal efficiency is low.
(2) container is heated for a long time, easy tos produce deformation and rupture, and water-cooling system is welded in some scenes in external container, so And weld seam is easy heated open and causes seepy question, and the working environment of continuous hot and cold alternation, to container and water-cooling system The processing technology of itself propose higher requirement.
(3) steel scrap is preheated by container, and uneven heating is even, thus the pre- thermal efficiency is low;Holder absorption heat simultaneously, subtracts The low utilization rate of thermal energy.
(4) be used for preheating kiln be typically use steel construction outline border, built-in fabric, refractory brick, castable structure, and The container of heating is positioned in stove on water beam, and container and its interior steel scrap held are not in direct contact with furnace wall, furnace bottom, because And it is difficult to meet preheating requirement.
Invention content
To solve the above-mentioned problems, the technical scheme is that:
A kind of scrap steel preheating system, including kiln, burner, mounting bracket, conveying device and pusher structure;
The kiln and the pusher structure are mounted on the mounting bracket, one end of the kiln be it is openable and closable go out Material mouth, the other end are controlled by the pusher structure and are opened and closed, and openable and closable feed inlet is additionally provided on the kiln;It is described to push away steel Mechanism is used to steel scrap releasing kiln;The burner is set on the kiln;The conveying device is for passing through steel scrap The feed inlet is sent into kiln.
Preferably, the kiln and pusher structure are obliquely installed by the mounting surface of mounting bracket.
Preferably, the conveying device includes driving and hopper, and the driving is described for lifting by crane and carrying the hopper The one end open of hopper, the retractable setting of the other end.
Preferably, the kiln includes furnace body, discharge door, feeding gate and dodge gate;
The furnace body is detachably secured on mounting bracket, and furnace body is equipped with the feed inlet and the discharge port;It is described Dodge gate is set on pusher structure, the folding for controlling one end opposite with discharge port on furnace body;The feeding gate and discharging Door hinge is connected on furnace body, and controls the folding of inlet port and outlet port respectively.
Preferably, the dodge gate includes door-plate main body and the fibrous encapsulation part around the door-plate main body, described Dodge gate passes through the fibrous encapsulation part and furnace sealing.
Preferably, there are gaps between the surrounding and furnace body of the dodge gate.
Preferably, the pusher structure includes pusher, and the pusher is detachably secured on mounting bracket.
Preferably, the burner includes the burner being removably installed on kiln side, and the burner is obliquely installed In on kiln.
Preferably, scrap steel preheating system further includes smoke evacuation subsystem, and the inside of the smoke evacuation subsystem connection kiln is used for The flue gas in kiln is discharged.
Preferably, scrap steel preheating system further includes water cooling subsystem, and the water cooling subsystem includes being embedded in each side of furnace body Water cooled pipeline in face.
Compared with the existing technology, the beneficial effects of the invention are as follows:
1, in the application, pusher structure makees straight reciprocating motion, and driving velocity is high, greatly shortens to take out out of kiln and give up The time of steel, time timing in seconds to realize the continuously pre-heating to steel scrap, while reducing thermal losses.Separately Outside, for burner when being heated to steel scrap, the steel scrap that conveying device has time enough to need next preheating cycle is advance It is delivered to the top of feed inlet, to further shorten preheating cycle, realizes laser heating.
2, kiln is obliquely installed, and is disperseed automatically under gravity when steel scrap enters in kiln, to slow down steel scrap The case where being deposited at feed inlet, and then improve the heated uniformity of steel scrap.It is deposited at the feed inlet of kiln when there is steel scrap When, it can suitably be released to discharge port direction by pusher structure, to ensure the uniformity of preheating.
3, in the application, steel scrap directly preheats in kiln, thus hopper is into for common container, thus eliminates tradition Because of cooling problem, weld seam problem, hopper problem on deformation of hopper generation etc. in technique.
4, the application is provided with high temperature resistant, wear-resisting material on each side of furnace body inner cavity, and solving steel scrap cannot The problem of directly being preheated in kiln, and can preferably meet preheating requirement.
Description of the drawings
Fig. 1 is the schematic diagram of the application;
Fig. 2 is the schematic elevation view of kiln;
Fig. 3 is the schematic cross-sectional view of kiln;
Fig. 4 is the vertical view of kiln;
Fig. 5 is the vertical view of kiln and pusher structure;
Fig. 6 is the A of Fig. 5 to sectional view;
Fig. 7 is the B of Fig. 5 to sectional view;
Fig. 8 is the schematic diagram of hopper;
Fig. 9 is clamping device schematic diagram.
Wherein, 1, mounting bracket, 101, lateral frame body, 101-1, mounting surface, 102, vertical legs, 2, kiln, 201, outside stove Frame, 202, furnace body, 203, discharge door, 204, feeding gate, 3, burner, 4, pusher structure, 401, pusher, 402, clamping machine 402-1, structure clamps frame body, 402-2, pinching roller, 402-3, is turned up part, and 501, hopper, 501-1, bucket body, 501-2, bottom plate, 501-2-1, mounting portion, 501-3, control door oil cylinder, 601, material basket, 602, transport vehicle.
Specific implementation mode
It is described in detail below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, a kind of scrap steel preheating system, including kiln 2, conveying device, mounting bracket 1, pusher structure 4 and combustion Burner 3.Wherein, kiln 2 is fixed on by fastener on mounting bracket 1, and burner 3 is mounted on kiln 2, for being carried out to steel scrap Preheating;The left end of kiln 2 is openable and closable discharge port, and right end is to push away steel mouth, and the folding for pushing away steel mouth is controlled by pusher structure 4, The side of kiln 2 is provided with openable and closable feed inlet;Conveying device is for steel scrap to be put into from feed inlet in kiln 2;Pusher Structure 4 is fixed on mounting bracket 1, is done reciprocating linear motion, for preheated steel scrap to be released kiln 2.
When to scrap steel preheating, discharge port is closed state, and steel scrap is transported to the top of feed inlet by conveying device, open into Material mouth, conveying device are decontroled steel scrap and are made it into kiln 2, and feed inlet is closed;Then by burner 3 to useless in kiln 2 Steel is preheated;After the completion of preheating, discharge port is opened, and pusher structure 4 acts, and the steel scrap in kiln 2 is released kiln from discharge port It is resetted after stove 2, closes discharge port;Subsequently into next preheating cycle.Since pusher structure 4 makees straight reciprocating motion, speed is pushed Degree is high, greatly shortens the time into the consumption of next preheating cycle, time of the consumption can timing in seconds, to real Show the continuously pre-heating to steel scrap, thereby reduces thermal losses;For burner 3 when being heated to steel scrap, conveying device has foot The steel scrap that next period needs is delivered to the top of feed inlet by the enough time in advance, real to further shorten preheating cycle Existing laser heating.
Specifically, please referring to Fig.1 and Fig. 7, the upper surface of mounting bracket 1 is mounting surface 101-1, and pusher structure 4 and kiln 2 are logical Fastener is crossed to be removably attached on mounting surface 101-1.Specifically, mounting bracket 1 is by vertical legs 102 and lateral frame body 101 are welded, and vertical legs 102 use shaped steel, lateral frame body 101 to be welded and formed by several I-beams and bearing plate.Installation Face 101-1 is the upper surface of lateral frame body 101, and mounting surface 101-1 is obliquely installed, to make full use of the gravity of steel scrap itself, just Disperse automatically after steel scrap enters kiln 2, avoid steel scrap and be deposited at feed inlet, while pushing away steel scrap conducive to pusher structure Go out, to improve the uniformity of preheating.
Further, the inclination angles of mounting surface 101-1 with respect to the horizontal plane are 5-10 °.If theoretical calculation and it was verified that should Inclination angle is too low, then its effect is small, and the effect that steel scrap disperses automatically is bad;But if inclination angle is excessive, and steel scrap enters after kiln 2 certainly Trend discharge outlet moves, and has been deposited in the uniformity for being unfavorable for promoting preheating close to the place of discharge port instead;In addition, inclining The installation difficulty and maintenance difficulties that conference improves pusher structure 4 and kiln 2 are crossed in angle.
Specifically, conveying device include driving and hopper 501, driving be set on ground, it is contemplated that drive a vehicle for it is existing at Cooking technique, therefore the application is not described in detail herein.Hopper 501 includes bucket body 501-1 and bottom plate 501-2, and bucket body 501-1 is opened at both ends Mouthful, bottom plate 501-2 is arranged in the bottom of bucket body 501-1, and the two is hinged.Bottom plate 501-2 and the retractable settings of bucket body 501-1, this Application is not construed as limiting to controlling specific opening-closing structure at this, hydraulic structure, electric control structure etc. can be used, but clearly to state The application sketches a kind of hydraulic structure herein:As shown in figure 8, hinged on bucket body 501-1, there are two control door oil cylinder 501-3, bottom plate Two mounting portion 501-2-1 are symmetrically extended outward on 501-2, and corresponding with two control door oil cylinder 501-3 hinged respectively;Material When being loaded with steel scrap in bucket 501, for control door oil cylinder 501-3 at contraction state, bucket body 501-1 is closed state;When needing discharging, The 501-3 elongations of door oil cylinder are controlled, bottom plate 501-2 is rotated around the hinged place of itself and bucket body 501-1, and bucket body 501-1 states to be opened are given up Steel automatically disengages hopper 501.In the application, steel scrap is directly preheated in kiln 2, and hopper 501 is real into common vessel is only made With, so as to avoid 501 problem on deformation of hopper, cooling and because cooling zone come weld seam leak the problems such as.
Specifically, please referring to Fig. 2-7, wherein Fig. 2 is the vertical view of kiln, in order to more fully understand the application, kiln 2 Including stove outline border 201, furnace body 202, discharge door 203, feeding gate 204 and dodge gate.Wherein stove outline border 201 for shaped steel weld and At frame, be used as install and protection furnace body 202.The upper side of furnace body 202 and forward and backward side are installed on by fastener outside stove In frame 201, then furnace body 202 and stove outline border 201 are integrally installed on mounting bracket 1.Furnace body 202 be equipped with above-mentioned discharge port, into Material mouth is arranged with steel mouth, feed inlet is pushed away in the side of furnace body 202, launches steel scrap for ease of driving, feed inlet is set to furnace body 202 upper side;It discharge port and pushes away steel mouth and is oppositely arranged.Discharge door 203 and feeding gate 204 are hingedly connected to going out for furnace body 202 At material mouth and at feed inlet, the control structure of discharge door 203 and feeding gate 204 is the same as the hydraulic structure of above-mentioned bottom plate 501-2, control The hydraulic cylinder of 203 open and close of feeding gate 204 and discharge door, both ends are respectively hinged on furnace body 202 and corresponding door frame.It is living Dynamic door is mounted on the end of pusher structure 4 by fastener, and when burner 3 is to scrap steel preheating, dodge gate is located at pushing away for furnace body 202 At steel mouth, for reducing thermal loss;When pushing away steel, pusher structure 4 pushes dodge gate for linear motion, and preheated steel scrap is pushed away Go out furnace body 202.
Further, the downside of 202 inner cavity of furnace body is selected containing any one of chrome heat-resistant cast iron, the resistance to material of corundum or its knot It closes, the upper side and front and back sides of the inner cavity of furnace body 202, which are selected, contains chrome heat-resistant cast iron, to realize high temperature resistant, wear-resisting, shock proof Effect, meanwhile, after steel scrap is put into 202 inner cavity of furnace body, it is heated evenly, so as to shorten heat transfer time, and then improves preheating Efficiency.
Further, the door frame made of steel structure splicing of feeding gate 204 and fibrous thermal block are constituted, wherein fiber Heat insulation is fixed on door frame, and fibrous thermal block has the characteristics that light and heat safe, effectively hot gas can be prevented to leak, and Realize the sealing of feeding gate 204 and furnace body 202;Door frame is hinged by an axis with furnace body 202.Discharge door 203 uses doorframe Frame and castable are constituted, and castable is built in door frame, can high temperature resistant and wear-resisting;The surrounding of discharge door 203 connects with furnace body 202 Tactile place is provided with bow-shaped structural, to carry out labyrinth seal, it is contemplated that the concrete structure of labyrinth seal is not the application desire The scheme of protection, therefore the application is not described here in detail.
Further, in one embodiment, dodge gate includes door-plate main body and fibrous encapsulation part, and fibrous encapsulation part is fixed on The surrounding of door-plate main body is used for sealing door-plat and furnace body 202.Fibrous encapsulation part uses wear-resisting, high temperature resistant material, to bear to rub High temperature in loss and kiln 2.In the present embodiment, dodge gate is tightly connected with furnace body 202, the good heat insulating of kiln 2, heat waste Lose it is small, and in another embodiment, there are gap between dodge gate and furnace body 202, the gap between 30-70mm, due to The gap is smaller, and when the pressure in kiln 2 is in slight positive pressure state, the heat in kiln 2 is not easy to lose, and dodge gate with Sliding friction is not present between furnace body 202, because of the burden without increasing pusher structure 4, and dodge gate will not be in kiln 2 Wall causes to damage, while being conducive to the maintenance of equipment again.
Specifically, burner 3 is several burners, burner is fixed on by fastener on stove outline border 201, and burner passes through furnace body 202 side is filled with the tapetum fibrosum of 10-30mm thickness to the scrap heating in furnace body 202 between burner and furnace body 202, For sealing.In order to ensure the uniformity of heating, the upper side of furnace body 202 and forward and backward side are equipped with multiple burners, such as Fig. 5- Shown in 7.With continued reference to Fig. 6, burner is obliquely installed with furnace body 202, and flame is avoided directly to burn on steel scrap, while increasing flame With the contact area of steel scrap, keep steel scrap heated more.Further, the outbound course of burner steel scrap tilts, and burner is avoided to be given up Steel blocks.In the present embodiment, the upper side of furnace body 202 selects flat flame burner, and forward and backward side, which is selected, adjusts flame burner nozzle, two kinds of burners The length of flame can effectively be controlled.
Burner is equipped with air scoop and gas port, is respectively turned on air-source and fuel gas source, and air-fuel ratio is adjusted by burner, with Adjust the efficiency of combustion of combustion gas.Certainly, it by adjusting the air in kiln 2 or/and the amount of combustion gas is entered, can also realize to kiln The adjustment of pressure in 2.
Specifically, pusher structure 4 uses pusher 401, pusher 401 to be fixed on the installation of mounting bracket 1 by fastener On the 101-1 of face, the affixed dodge gate of output shaft of pusher 401.Pusher 401 makees linear reciprocal movement, pushes dodge gate will be pre- It is resetted after the good steel scrap output kiln 2 of heat, is active in one's movements, is efficient.
Further, since the output shaft of pusher 401 is longer, pusher structure 4 further includes clamping device, for reducing The amount of deflection of output shaft.As shown in Fig. 1 and Fig. 9, clamp system 402 includes clamping frame body 402-1, part 402-3 and clamping being turned up Idler wheel 402-2.Part 402-3 is turned up individually or superposition is placed on mounting bracket 1, can be plank, shaped steel etc., clamp frame body 402-1 It is placed on and is turned up on part 402-3, pinching roller 402-2 is rotationally connect with clamping frame body 402-1, two pinching roller 402- 2 are installed as one group above and below, each to clamp at least one set of on frame body 402-1, at least one clamping device on each output shaft.
Further, it is additionally provided with travel switch on pusher 401, the range for limiting pusher 401 plays protection Effect places and interferes with other physics parts because the stroke of pusher 401 is excessive.
Specifically, preheated steel scrap can be directly pushed into the conveying device of connection converter, can also it be pushed into container, then will The container transfers in converter or other upstream devices, and Fig. 1 is illustrated by taking latter approach as an example, is material basket above 601, for containing preheated steel scrap;Following is transport vehicle 602, is detachably connected with material basket 601;Steel scrap is pushed into material basket In 601, then send to the place of needs through transport vehicle 602.
Specifically, scrap steel preheating system further includes smoke evacuation subsystem, for the flue gas that burning generates in kiln 2 to be discharged.Row Soot system includes smoke exhaust pipe, air-introduced machine, flow control valve etc., and smoke discharging pipe is connected to the inner cavity of furnace body 202, air-introduced machine and flow Control valve is arranged on smoke discharging pipe, wherein the pressure of air-introduced machine control smoke evacuation subsystem, flow control valve regulation smoke discharging pipe Throughput.When preheating, it can be adjusted in kiln 2 by carrying out the aperture of upconversion operation or adjusting flow control valve to air-introduced machine Pressure, make its keep slight positive pressure state.
Specifically, scrap steel preheating system further includes water cooling subsystem, kiln 2 terminates after all warm operations through the subsystem System cools down.Water cooling subsystem includes water source, driving element and several water cooled pipelines, and three is collectively formed an at least water and follows Loop back path.Water cooled pipeline is embedded in the front, rear, top, and bottom side of furnace body 202, and driving element provides the power of this subsystem.
Above from physically the application is illustrated, in control aspect, scrap steel preheating system passes through an industry control Computer is controlled, the electric connections such as industrial PC and driving, pusher 401, burner 3, and discharge door 203, feeding gate 204, hopper 501, pusher 401, be equipped with sensor on each hydraulic cylinder etc., these sensors electrically connect with industrial PC It connects, industrial PC is judged and instructed according to received signal, and each parts make corresponding action.For example, pusher Displacement sensor is installed on 401 output shaft, for detecting its displacement, operator can input required position into industrial PC Shifting value, after sensor detects that the output shaft of pusher 401 outputs the displacement, industrial PC, which controls pusher 401, to be stopped Work.
Industrial PC can also be ensured by controlling exhaust smoke level of the air inflow of burner 3, subsystem of discharging fume etc. in kiln 2 Slight positive pressure state in 10Pa or so.
In order to understand the uniformity of the temperature of each position in kiln 2, some thermoelectricity are arranged on the side of furnace body 202 Even, thermocouple is electrically connected with industrial PC, and operator is former according to the non-uniform generation of detection data analysis temperature of thermocouple Cause is convenient for optimize technique.
In addition, being equipped with weighing sensor between mounting bracket 1 and kiln 2, weighing sensor is fixed on mounting bracket 1, is used for Steel scrap weight in detection kiln 2 in real time, adjusts heating demand and heating time accordingly;When steel scrap is overweight, industrial PC is connected One warning device is alarmed.
Disclosed above is only some embodiments of the application, and however, this application is not limited to this, any this field Technical staff can think variation, should all fall in the protection domain of the application.

Claims (10)

1. a kind of scrap steel preheating system, including kiln and burner, which is characterized in that further include mounting bracket, conveying device and push away Steel mechanism;
The kiln and the pusher structure are mounted on the mounting bracket, and one end of the kiln is openable and closable discharging Mouthful, the other end is controlled by the pusher structure and is opened and closed, and openable and closable feed inlet is additionally provided on the kiln;The pusher Structure is used to steel scrap releasing kiln;The burner is set on the kiln;The conveying device is used to steel scrap passing through institute It states feed inlet and is sent into kiln.
2. scrap steel preheating system as described in claim 1, which is characterized in that the kiln and pusher structure pass through mounting bracket Mounting surface is obliquely installed.
3. scrap steel preheating system as described in claim 1, which is characterized in that the conveying device includes driving and hopper, institute Driving is stated for lifting by crane and carrying the hopper, the one end open of the hopper, the retractable setting of the other end.
4. scrap steel preheating system as described in claim 1, which is characterized in that the kiln includes furnace body, discharge door, feeding gate And dodge gate;
The furnace body is detachably secured on mounting bracket, and furnace body is equipped with the feed inlet and the discharge port;The activity Door is set on pusher structure, the folding for controlling one end opposite with discharge port on furnace body;The feeding gate and discharging door hinge It is connected on furnace body, and controls the folding of inlet port and outlet port respectively.
5. scrap steel preheating system as claimed in claim 4, which is characterized in that the dodge gate include door-plate main body and be set to institute The fibrous encapsulation part around door-plate main body is stated, the dodge gate passes through the fibrous encapsulation part and furnace sealing.
6. scrap steel preheating system as claimed in claim 4, which is characterized in that exist between the surrounding and furnace body of the dodge gate Gap.
7. scrap steel preheating system as described in claim 1, which is characterized in that the pusher structure includes pusher, described to push away Steel machine is detachably secured on mounting bracket.
8. scrap steel preheating system as described in claim 1, which is characterized in that the burner includes being removably installed in kiln Burner on the face of furnace side, the burner are obliquely installed on kiln.
9. scrap steel preheating system as described in claim 1, which is characterized in that further include smoke evacuation subsystem, the smoke evacuation subsystem The inside of system connection kiln, the flue gas for being discharged in kiln.
10. scrap steel preheating system as described in claim 1, which is characterized in that further include water cooling subsystem, the water cooling subsystem System includes the water cooled pipeline being embedded in each side of furnace body.
CN201810411034.8A 2018-05-02 2018-05-02 A kind of scrap steel preheating system Pending CN108398030A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110029202A (en) * 2018-12-06 2019-07-19 河北亚吉工程技术有限公司 A kind of method and device of converter steel scrap continuously pre-heating

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110029202A (en) * 2018-12-06 2019-07-19 河北亚吉工程技术有限公司 A kind of method and device of converter steel scrap continuously pre-heating

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