CN209555280U - A kind of energy-saving rotary hearth furnace system - Google Patents
A kind of energy-saving rotary hearth furnace system Download PDFInfo
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- CN209555280U CN209555280U CN201822170290.0U CN201822170290U CN209555280U CN 209555280 U CN209555280 U CN 209555280U CN 201822170290 U CN201822170290 U CN 201822170290U CN 209555280 U CN209555280 U CN 209555280U
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- rotary hearth
- hearth furnace
- molten iron
- cooling duct
- energy
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Abstract
The utility model provides a kind of energy-saving rotary hearth furnace system, including rotary hearth furnace ontology, gaspipe network, briquetting component, the inlet end and gas chamber or blast furnace roof of the gaspipe network, the outlet side of the gaspipe network is connect with the burner hearth of rotary hearth furnace ontology, and molten iron cooling duct is additionally provided between the briquetting component and rotary hearth furnace ontology.The utility model restores the raw material inside rotary hearth furnace using the surplus gas that gas chamber or blast furnace generate, and reduces the heating consumption of raw materials of rotary hearth furnace itself, reduces the cost of rotary hearth furnace reduction iron；The purpose of molten iron cooling duct is arranged in the utility model between briquetting component and rotary hearth furnace ontology, is the temperature for reducing molten iron inside briquetting component, protects the pressure head service life of briquetting component.
Description
Technical field
The utility model belongs to ironmaking field, and in particular to a kind of energy-saving rotary hearth furnace system.
Background technique
Rotary hearth furnace melting reduction technology is to be added to the carbonaceous pelletizing after compounding, mixing, ball processed and drying to have annular
In the rotary hearth furnace of burner hearth and rotatable furnace bottom, under 1350 DEG C or so fire box temperatures, in the process to rotate a circle with furnace bottom
In, iron ore is restored by carbon.
Existing rotary hearth furnace is only capable of that green pellets is reduced into metallized pellet using fuse reducing iron-smelting process for rotating furnace, turns
Bottom furnace can not utilize blast furnace surplus gas during the work time.
Based on this, it is badly in need of providing a kind of energy-saving rotary hearth furnace system that can utilize blast furnace surplus gas.
Utility model content
In order to solve the above-mentioned problems in the prior art, the utility model provides a kind of energy-saving rotary hearth furnace system
System.The technical problems to be solved in the utility model is achieved through the following technical solutions:
A kind of energy-saving rotary hearth furnace system, including rotary hearth furnace ontology, gaspipe network, briquetting component, the gaspipe network
Inlet end and gas chamber or blast furnace roof, the outlet side of the gaspipe network are connect with the burner hearth of rotary hearth furnace ontology, the briquetting
Molten iron cooling duct is additionally provided between component and rotary hearth furnace ontology.The coal more than needed that the utility model is generated using gas chamber or blast furnace
Gas restore rotary hearth furnace inside raw material, reduce the heating consumption of raw materials of rotary hearth furnace itself, reduce rotary hearth furnace reduction iron at
This；The purpose of molten iron cooling duct is arranged in the utility model between briquetting component and rotary hearth furnace ontology, is to reduce briquetting component
The temperature of internal molten iron protects the pressure head service life of briquetting component.
The molten iron cooling duct is equipped with waste heat recovery pipe road as a further improvement of the utility model, described remaining
Recuperation of heat pipeline is connect into hot end with molten iron cooling duct, the burner hearth company for going out hot end and converter on the waste heat recovery pipe road
It connects.The heat generated in molten iron cooling duct when molten iron cools down is transferred to steel-making by waste heat recovery pipe road by the utility model
Furnace, the heat that converter makes full use of molten iron to cool down reduce heat of the converter in steel-making.
It as a further improvement of the utility model, further include the pressure ball room that mixture is pressed, the pressure
There is low temperature drying chamber, the waste heat recovery pipe road direction low temperature drying chamber provides heat source in ball room.The utility model, which utilizes, turns bottom
The heat that furnace body rear end molten iron generates when cooling dries mixture in low temperature drying chamber, just dries without other energy supplies
Dry mixture has preferable energy-saving.
As further limiting for the utility model, at least one is equipped between the outer wall and inner wall of the molten iron cooling duct
Root coil pipe is connected with cooling water in the coil pipe.The molten iron cooling duct of the utility model cooling iron by the way of water cooling
Water, the hot water for transmitting heat can be used for entire plant area.
Described as a further improvement of the utility model, further includes the pressure ball room that mixture is pressed, institute
Stating has low temperature drying chamber in pressure ball room, passage of heat is equipped between the inner and outer wall of the low temperature drying chamber, described thermally conductive
Channel is connected to coil pipe by connecting tube.
The molten iron cooling duct is made of refractory material as a further improvement of the utility model, and the molten iron is cold
But it is coated with metal layer on the outer wall in channel, forms seal chamber, the seal chamber between the molten iron cooling duct and metal layer
End and waste heat recovery pipe road connect into hot end, in the waste heat recovery pipe road flowing has the heat of sealed chamber heating to steam
Vapour.Molten iron cooling duct purpose made of refractory material is to increase the durability of molten iron cooling duct by the utility model, is increased
Waste heat recovery pipe road and seal chamber are tightly connected by the service life of hot metal charging cooling duct, the utility model, to greatest extent
Reduce heat loss, while injuring operator after effectively the hot steam in seal chamber being prevented to leak, guarantees peripheral operation people
The operation safety of member.
Detailed description of the invention
Fig. 1 is the schematic diagram of energy-saving rotary hearth furnace system；
Fig. 2 is the schematic diagram of rotary hearth furnace structure；
Fig. 3 is the structural schematic diagram of molten iron cooling duct.
In figure, 1, rotary hearth furnace ontology；11, square furnace；11-1, burner；11-2, gas port；11-3, wind nozzle is mended；12,
Rotating device；2, gas chamber；3, briquetting component；4, gaspipe network；5, molten iron cooling duct；51, channel body；52, radiation shell；
53, coil pipe.
Specific embodiment
Further detailed description, but the embodiment party of the utility model are done to the utility model combined with specific embodiments below
Formula is without being limited thereto.
Embodiment 1:
The fire box temperature of rotary hearth furnace, which needs to be increased to 1350 DEG C or so, to work, and existing burner hearth heating mode is to use
Thorax is dried in fuel heating, haves the defects that waste fuel, not energy-efficient.The energy-saving rotary hearth furnace system of the present embodiment, using blast furnace or
Surplus gas heating furnace in gas chamber 2, using effect are preferable.
The energy-saving rotary hearth furnace system of the present embodiment is as shown in Figure 1, include rotary hearth furnace ontology 1, gaspipe network 4, briquetting group
Part 3, the inlet end and gas chamber 2 or blast furnace roof of the gaspipe network 4, the outlet side of the gaspipe network 4 and rotary hearth furnace sheet
The burner hearth of body 1 connects, and is additionally provided with molten iron cooling duct 5 between the briquetting component 3 and rotary hearth furnace ontology 1.The present embodiment utilizes
The raw material inside surplus gas reduction rotary hearth furnace that gas chamber 2 or blast furnace generate, the heating raw material for reducing rotary hearth furnace itself disappear
Consumption, reduces the cost of rotary hearth furnace reduction iron；It is cooling that molten iron is arranged in the present embodiment between briquetting component 3 and rotary hearth furnace ontology 1
The purpose in channel 5 is the temperature for reducing by 3 inside molten iron of briquetting component, protects the pressure head service life of briquetting component 3.
In the present embodiment, the preferably described molten iron cooling duct 5 is equipped with waste heat recovery pipe road, the waste heat recovery pipe road
Connect into hot end with molten iron cooling duct 5, the burner hearth for going out hot end and converter on the waste heat recovery pipe road connects.This implementation
The heat generated in molten iron cooling duct 5 when molten iron cools down is transferred to converter, converter by waste heat recovery pipe road by example
The heat for making full use of molten iron to cool down reduces heat of the converter in steel-making.
The energy-saving rotary hearth furnace system of the present embodiment further includes the pressure ball room that mixture is pressed, the pressure
There is low temperature drying chamber, the waste heat recovery pipe road direction low temperature drying chamber provides heat source in ball room.The present embodiment utilizes rotary hearth furnace
The heat that 1 rear end molten iron of ontology generates when cooling dries mixture in low temperature drying chamber, just dries without other energy supplies
Dry mixture has preferable energy-saving.
In the present embodiment, at least one coil pipe is equipped between the outer wall and inner wall of the preferably described molten iron cooling duct 5
53, cooling water is connected in the coil pipe 53.The molten iron cooling duct 5 of the present embodiment cooling molten iron by the way of water cooling, passes
The hot water for passing heat can be used for entire plant area.
In the present embodiment, preferably described further includes the pressure ball room that mixture is pressed, in the pressure ball room
With low temperature drying chamber, passage of heat, the passage of heat and coiling are equipped between the inner and outer wall of the low temperature drying chamber
Pipe 53 is connected to by connecting tube.
In the present embodiment, the preferably described molten iron cooling duct 5 is made of refractory material, the molten iron cooling duct 5
Be coated with metal layer on outer wall, form seal chamber between the molten iron cooling duct 5 and metal layer, the end of the seal chamber with
Waste heat recovery pipe road is connected into hot end, and flowing has the hot steam of sealed chamber heating in the waste heat recovery pipe road.This implementation
The purpose made of refractory material of molten iron cooling duct 5 is to increase the durability of molten iron cooling duct 5 by example, and it is cooling to increase molten iron
Waste heat recovery pipe road and seal chamber are tightly connected by the service life in channel 5, the present embodiment, are maximally reduced heat and are dissipated
It loses, while injuring operator after effectively the hot steam in seal chamber being prevented to leak, guarantee the operation peace of outside operator
Entirely.
Embodiment 2:
On the basis of embodiment 1, present embodiment discloses a kind of rotary hearth furnace structures as shown in Figure 2, including block furnace
Four corners of body 11, the support component for being used to support square furnace 11, square furnace 11 are respectively equipped with burner 11-1, rectangular
Two faces of 11 face of furnace body are equipped with gas port 11-2, and gas port 11-2 is located at the lower part of square furnace 11.Due to coal gas
Density is less than the density of air, and gas port 11-2 is arranged in the lower part of square furnace 11 by the present embodiment, and coal gas is from gas port 11-
After 2 enter burner hearth, roof of the furnace is floated up to, makes to heat in entire burner hearth filled with coal gas convenient for burner hearth.The present embodiment is by two
Gas port 11-2 is oppositely arranged, and can be prevented the convection current of coal gas in burner hearth and is quickly paved with coal gas in the bottom of entire burner hearth,
The coal gas filler material of burner hearth bottom promotes air to float, and is more advantageous to the burning of burner hearth bottom.
In the present embodiment, the muti-piece baffle for burner hearth to be divided into different zones, muti-piece baffle are equipped with preferably in burner hearth
It is fixedly connected with the inner wall of burner hearth, is fixedly connected between muti-piece baffle respectively, there is gap between baffle and the bottom of burner hearth.This
Embodiment, with the purpose in gap, will be easy for coal gas and be diffused into each region between baffle and the bottom of burner hearth.It is preferred that muti-piece
Burner hearth is divided into loading area, preheating reducing zone, heating reducing zone, high temperature reduction area, control reducing zone, two gas ports by baffle
11-2 is provided on the inner wall in high temperature reduction area.
In the present embodiment, preferably burner 11-1 is located at the middle part of burner hearth, and burner 11-1 is mounted on two adjacent block baffles
Between.The purpose in the middle part of burner hearth is arranged in burner 11-1 by the present embodiment, is to prevent from burner hearth from blocking burner 11-1 in blanking to make
At burner 11-1 cisco unity malfunction.
In the present embodiment, preferably 11 lower ending opening of square furnace, the bottom end of square furnace 11 are equipped with rotating device 12, rotation
The upper surface of rotary device 12 is contacted with the furnace wall bottom surface of square furnace 11.Rotation is arranged in the lower end of square furnace 11 in the present embodiment
The purpose of device 12 is to rotate mixture with rotating device 12 in burner hearth, successively undergoes loading area, preheating reducing zone, adds
Area, high temperature reduction area, control reducing zone are heat-treated, reduction process is completed.
In the present embodiment, it is preferably additionally provided at least one on square furnace 11 and mends wind nozzle 11-3, mends wind nozzle 11-3
Positioned at the top of square furnace 11, mends wind nozzle 11-3 and burner 11-1 and be staggered.The present embodiment is set wind nozzle 11-3 is mended
It sets on 11 top of square furnace, benefit wind nozzle 11-3, which is blown into air, makes gas-fired, provides for mixture heating and reduction reaction
Heat makes mixture be heated to 1100 DEG C or more quickly from room temperature.
In the present embodiment, the side of preferably square furnace 11 is additionally provided with molten iron cooling duct 5, the furnace wall of square furnace 11
It is equipped with communication port, communication port is connect with molten iron cooling duct 5.Communication port is arranged the present embodiment close to 11 lower part of square furnace
Purpose, be easy for pouring out for high temperature liquid iron.
In the present embodiment, rotary hearth furnace structure is except the process of iron: charging → heat temperature raising → reduction → cooling → discharging.Furnace
It is divided into loading area, preheating reducing zone, heating reducing zone, high temperature reduction area, control reducing zone in thorax.Mixture is in burner hearth with furnace bottom
Above-mentioned each area is undergone in rotation, is completed reduction process, is then come out of the stove.
Furnace temperature gradually rises from preheating reducing zone to control reducing zone, and the furnace temperature for controlling reducing zone requires to reach~1500
℃。
In each region, it is distributed in the heat-accumulating burner 11-1 burning coal gas of burner hearth two sides, wind nozzle 11-3 is mended and is blown into sky
CO that gas releases reduction reaction burning provides heat for mixture heating and reduction reaction, make mixture from room temperature quickly by
It is heated to 1100 DEG C or more.In high temperature reduction area and control reducing zone, by the gas volume and air capacity essence that adjust burner 11-1
Really control furnace atmosphere, to reach optimal reducing condition.
Embodiment 3:
On the basis of embodiment 1 and embodiment 2, present embodiment discloses a kind of molten iron cooling ducts 5, as shown in figure 3,
It include: for the channel body 51 of molten iron flow, the radiation shell 52 being coated on outside channel body 51, setting in radiation shell 52 and logical
The end of water stream channel between road ontology 51, water stream channel is connected to waste heat recovery pipe road.The present embodiment is in channel body 51
Outer wall be arranged radiation shell 52, make between radiation shell 52 and the outer wall of channel body 51 have gap, which can be for water flow
It crosses, quick flowing water absorbs heat on the outer wall of channel body 51, so that water is become vapor and enters waste heat recovery pipe road, right
The waste heat of molten iron carries out secondary use, and using effect is preferable.
As a preferred embodiment of the present embodiment, water stream channel is the curved coil pipe 53 of at least one, coil pipe 53
Inside it is connected with cooling water.The molten iron cooling duct 5 of the present embodiment cooling molten iron by the way of water cooling, the hot water for transmitting heat can be with
It is used for entire plant area.
As a preferred embodiment of the present embodiment, the outer wall of radiation shell 52 is additionally provided with anti-scald separation layer.The present embodiment exists
The external purpose that anti-scald separation layer is arranged of radiation shell 52, is scalded after preventing operating personnel from accidentally touching radiation shell 52.
As a preferred embodiment of the present embodiment, anti-scald separation layer is made of refractory material.
As a preferred embodiment of the present embodiment, seal chamber is formed between molten iron cooling duct 5 and radiation shell 52, is sealed
The end of chamber is connect with waste heat recovery pipe road into hot end, and flowing has the hot steam of sealed chamber heating in waste heat recovery pipe road.
Waste heat recovery pipe road and seal chamber are tightly connected by the present embodiment, maximally reduce heat loss, while effectively preventing
Hot steam in seal chamber injures operator after leaking, and guarantees the operation safety of outside operator.
As a preferred embodiment of the present embodiment, coil pipe 53 is in the form of a serpentine to be distributed in molten iron cooling duct 5 and radiation shell
Between 52, coil pipe 53 is linear type in water outlet side in water inlet lateral bend coiling, coil pipe 53.The present embodiment is arranged in influent side
It is to be arranged to linear mesh in water outlet side to quickly heat the cooling water in coil pipe 53 at the purpose of bending coil-shape
, it is the maximum thermal loss for reducing hot steam in coil pipe 53, the hot steam heated through molten iron is introduced directly into waste heat
Recovery pipe.
It, cannot the above content is specific preferred embodiment further detailed description of the utility model is combined
Assert that the specific implementation of the utility model is only limited to these instructions.For the ordinary skill of the utility model technical field
For personnel, without departing from the concept of the premise utility, a number of simple deductions or replacements can also be made, should all regard
To belong to the protection scope of the utility model.
Claims (6)
1. a kind of energy-saving rotary hearth furnace system, which is characterized in that including rotary hearth furnace ontology, gaspipe network, briquetting component, the coal
The inlet end and gas chamber or blast furnace roof of gas pipe network, the outlet side of the gaspipe network are connect with the burner hearth of rotary hearth furnace ontology,
Molten iron cooling duct is additionally provided between the briquetting component and rotary hearth furnace ontology.
2. energy-saving rotary hearth furnace system according to claim 1, which is characterized in that the molten iron cooling duct is equipped with remaining
Recuperation of heat pipeline, the waste heat recovery pipe road are connect into hot end with molten iron cooling duct, and the waste heat recovery pipe road goes out heat
End is connect with the burner hearth of converter.
3. energy-saving rotary hearth furnace system according to claim 2, which is characterized in that further include being pressed into mixture
The pressure ball room of type, has low temperature drying chamber in the pressure ball room, and the waste heat recovery pipe road direction low temperature drying chamber provides heat source.
4. energy-saving rotary hearth furnace system according to claim 1, which is characterized in that the outer wall of the molten iron cooling duct and
It is equipped at least one coil pipe between inner wall, is connected with cooling water in the coil pipe.
5. energy-saving rotary hearth furnace system according to claim 4, which is characterized in that further include being pressed into mixture
The pressure ball room of type has low temperature drying chamber in the pressure ball room, is equipped between the inner and outer wall of the low temperature drying chamber thermally conductive
Channel, the passage of heat are connected to coil pipe by connecting tube.
6. energy-saving rotary hearth furnace system according to claim 2, which is characterized in that the molten iron cooling duct is by fire proofed wood
Material is made, and is coated with metal layer on the outer wall of the molten iron cooling duct, is formed between the molten iron cooling duct and metal layer
Seal chamber, the end of the seal chamber and being connect into hot end for waste heat recovery pipe road, in the waste heat recovery pipe road flowing have through
The hot steam of seal chamber heating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822170290.0U CN209555280U (en) | 2018-12-24 | 2018-12-24 | A kind of energy-saving rotary hearth furnace system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822170290.0U CN209555280U (en) | 2018-12-24 | 2018-12-24 | A kind of energy-saving rotary hearth furnace system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209555280U true CN209555280U (en) | 2019-10-29 |
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ID=68303479
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822170290.0U Expired - Fee Related CN209555280U (en) | 2018-12-24 | 2018-12-24 | A kind of energy-saving rotary hearth furnace system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209555280U (en) |
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2018
- 2018-12-24 CN CN201822170290.0U patent/CN209555280U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191029 Termination date: 20201224 |