CN206257958U - A kind of Magnetization reductive roasting one rotary hearth furnace - Google Patents
A kind of Magnetization reductive roasting one rotary hearth furnace Download PDFInfo
- Publication number
- CN206257958U CN206257958U CN201621249512.2U CN201621249512U CN206257958U CN 206257958 U CN206257958 U CN 206257958U CN 201621249512 U CN201621249512 U CN 201621249512U CN 206257958 U CN206257958 U CN 206257958U
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- barricade
- heater
- rotary hearth
- area
- hearth furnace
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Abstract
The utility model discloses a kind of Magnetization reductive roasting one rotary hearth furnace, including body of heater, furnace bottom, barricade, radiant tube and burner；Body of heater includes lateral wall, furnace roof and madial wall, and lateral wall connects madial wall by furnace roof, and the cross-sectional area of body of heater is annular；Furnace bottom is ring-type, and positioned at body of heater lower section, furnace bottom constitutes annular space with body of heater；Dams setting is in body of heater, annular space is divided into magnetizing roast area and reduction roasting area by barricade connection lateral wall, furnace roof and madial wall, barricade, and barricade includes hollow barricade and solid barricade, hollow barricade is provided with reducing agent entrance, hollow barricade inside up/down perforation；Radiant tube and burner are installed on body of heater.Rotary hearth furnace of the present utility model can complete the magnetizing roast of material and reduction roasting integration, and reduction effect is good, and operating cost is low.
Description
Technical field
The utility model belongs to technical field of metallurgical equipment, more particularly to a kind of magnetization-reduction roasting one rotary hearth furnace.
Background technology
Rotary hearth furnace direct-reduction technique is nearly three ironmaking for growing up during the decade and processes special nonferrous metallic ores
New technology.Rotary hearth furnace direct-reduction eliminates blast furnace coking flow, is a technology for energy-conserving and environment-protective.Because this technique is to original
Material is less demanding with fuel, can rationally utilize natural resources, thus is paid high attention to by metallurgical and coloured industry.
Rotary hearth furnace oil ring shape siege, outboard sidewalls, furnace roof, combustion system etc. are constituted.Side wall, furnace roof are maintained static, siege
Circulation rotating is driven by furnace bottom transmission mechanism.The technological process of rotary hearth furnace is made after fine ore and reducing agent are added into binding agent
Ball, and pelletizing is evenly spaced in the furnace bottom of rotary hearth furnace, during the pelletizing on furnace bottom rotates a circle with furnace bottom, complete also
It is former.The metallized pellet produced by rotary hearth furnace can be as the raw material of blast furnace or molten point of stove etc., to obtain metal.
The process characteristic of rotary hearth furnace：
(1) material of reduction roasting is carbonaceous pelletizing in rotary hearth furnace, and the contact between carbon and iron oxide is tight, with good
Good quick reducing condition.
(2) rotary hearth furnace reduction roasting technique is that the thin bed of material is heated in high temperature, is capable of achieving quick reduction, and furnace charge is gone back in stove
The former time is short.
(3) it is because the thin bed of material, furnace charge are not pressurized in rotary hearth furnace and without relative motion between furnace charge and furnace lining therefore right
The intensity requirement of furnace charge is not high, will not produce dough and the resistance to material bonding phenomenon of body of heater.
Current rotary hearth furnace, although the treating capacity of separate unit is larger, but unitary function, only reduction effect, needs for some
Want the raw material direct-reduction effect of magnetizing roast poor, limit the use of rotary hearth furnace；The furnace atmosphere of rotary hearth furnace is uncontrollable, material
The problems such as heating uneven needs to improve.
Utility model content
In order to solve the above problems, the utility model proposes a kind of rotary hearth furnace of magnetization-reduction roasting one, the rotary hearth furnace
The magnetizing roast for the treatment of material can successively be carried out with reduction roasting, barricade can be by magnetizing roast area and reduction roasting area gas
Atmosphere is isolated, and magnetizing roast area is heated using radiant tube, forms neutral atmosphere, and reduction roasting area is reducing atmosphere, and reduction effect is good,
Operating cost is small.
The utility model provides a kind of magnetization-reduction roasting one rotary hearth furnace, including body of heater, furnace bottom, barricade, radiant tube and
Burner；
The body of heater includes lateral wall, furnace roof and madial wall, and the lateral wall connects the madial wall by furnace roof, described
The cross-sectional area of body of heater is annular；
The furnace bottom is ring-type, and positioned at body of heater lower section, the furnace bottom constitutes annular space with the body of heater；
In the body of heater, the barricade connects the lateral wall, furnace roof and madial wall, the barricade to the dams setting
The annular space is divided into magnetizing roast area and reduction roasting area, the barricade includes hollow barricade and solid barricade, institute
State hollow barricade and be provided with reducing agent entrance, the hollow barricade inside up/down perforation；
The radiant tube and burner are installed on the body of heater.
The furnace bottom of rotary hearth furnace is rotatable, drives material to be moved in body of heater.Barricade is vertically arranged in body of heater, by rotary hearth furnace
Interior annular space is divided into different regions, and different regions can set different atmosphere, and the atmosphere of different zones will not
Interfere with each other, realize the multi-functional utilization of rotary hearth furnace.
Reducing agent entrance is arranged on the top of hollow barricade, and hollow barricade inner hollow enters rotary hearth furnace as reducing agent
Passage, can prevent reducing agent falling process occur burning and uneven cloth.
Further, feeding mouth and discharging opening are set on the body of heater, and the feeding mouth is arranged on the magnetizing roast area
On lateral wall, the discharging opening is arranged on reduction roasting area lateral wall.
Used as preferred scheme of the present utility model, the feeding mouth is arranged on the solid barricade end in the magnetizing roast area.Institute
State discharging opening and be arranged on the solid barricade end in the reduction roasting area.I.e. feeding mouth and discharging opening are located at the both sides of same barricade.Change
Sentence is talked about, and solid barricade is set in the sector region between feeding mouth and discharging opening.Fan section between feeding mouth and discharging opening
The radian in domain is preferred with 10 °~20 °.Feeding mouth and setting for discharging opening can as far as possible extend time of the pelletizing in rotary hearth furnace, carry
Reduction effect high.
Used as preferred scheme of the present utility model, magnetizing roast area radian is 90 °~120 °.The gas in magnetizing roast area
Atmosphere is controlled to neutrality, ore can be heated into uniform temperature and decomposed, and generates magnetic iron ore, and magnetic iron ore is easier to be reduced.
Used as preferred scheme of the present utility model, reduction roasting area radian is 220 °~260 °.Reduction roasting area is
Reducing atmosphere, pelletizing contacts generation reduction reaction with reducing agent in reduction roasting area, obtains metallized pellet.It is of the present utility model
The pelletizing of rotary hearth furnace treatment, reduction effect is good, and degree of metalization is high, more conducively the utilization of subsequent metal pellet.
Further, reducing zone and cooling zone are divided into the reduction roasting, and the cooling zone radian is 50 °~90 °, institute
State cooling zone one end to be connected with discharging opening, the cooling zone furnace roof and two side are provided with water-cooling wall.
Reducing zone and cooling zone are divided into reduction roasting and is conducive to the subsequent treatment of pelletizing.Water-cooling wall is arranged on cooling zone
Furnace roof and two side, control water-cooling wall current make cooling zone temperature control require temperature to discharging.
Specifically, the barricade bottom is 10~20cm with the furnace bottom vertical range.Stove of the barricade bottom to rotary hearth furnace
The distance of bottom upper surface should ensure passing through for material, ensure magnetizing roast area's atmosphere and reduction roasting area atmosphere not again
Interfere with each other.
Further, the radiant tube is located at the magnetizing roast area.Radiant tube is regenerative gas combustion radiant tube,
Magnetizing roast area is heated using radiant tube, and magnetizing roast area can be made to keep neutral atmosphere.
Further, the burner is located at the reduction roasting area.Burner is regenerative gas burner, relative to
Electrical heating, gas heating energy consumption is smaller.
Magnetization-reduction roasting one rotary hearth furnace that the utility model is provided, two kinds of gas in body of heater can be realized by barricade
Atmosphere does not interfere with each other；Reducing agent is sent into rotary hearth furnace by hollow barricade, prevents burning and uneven cloth that reducing agent falls；Material exists
Magnetizing roast is completed with reduction roasting one in rotary hearth furnace；Material is after magnetizing roast, and reduction effect is good；Reduction roasting area is abundant
Using the sensible heat of magnetizing roast area material, energy consumption is small, low cost.
Brief description of the drawings
Fig. 1 is rotary hearth furnace schematic top plan view of the present utility model；
Fig. 2 is the partial view of the hollow barricade of the utility model.
In figure：
1- bodies of heater；101- reducing agent entrances；102- feeding mouths；103- discharging openings；2- furnace bottoms；3- barricades；The hollow gears of 301-
Wall；The solid barricades of 302-；4- radiant tubes；5- burners；6- magnetizing roasts area；7- reduction roastings area；701- reducing zones；702- is cold
But area.
Specific embodiment
Below in conjunction with drawings and Examples, specific embodiment of the present utility model is described in more details, with
Just better understood when the advantage of scheme of the present utility model and its various aspects.However, specific implementations described below side
Formula and embodiment are only descriptive purposes, rather than to limitation of the present utility model.
As depicted in figs. 1 and 2, the utility model embodiment provides a kind of magnetization-reduction roasting one rotary hearth furnace, including stove
Body 1, furnace bottom 2, barricade 3, radiant tube 4 and burner 5.
Body of heater 1 includes lateral wall, furnace roof and madial wall, and lateral wall connects madial wall, the cross-sectional area of body of heater by furnace roof
It is annular.
Furnace bottom 2 is ring-type, and positioned at the lower section of body of heater 1, furnace bottom 2 constitutes annular space with body of heater 1.Furnace bottom 2 can be around rotary hearth furnace
Central shaft rotates, and the material into rotary hearth furnace falls on furnace bottom 2, and the material that rotarily drives of furnace bottom 2 rotates in rotary hearth furnace.
Barricade 3 is arranged in body of heater 1, the connection of barricade 3 lateral wall, furnace roof and madial wall.Barricade 3 is empty by the annular of rotary hearth furnace
Between be divided into magnetizing roast area 6 and reduction roasting area 7.
Barricade 3 is vertically arranged in body of heater 1, and the annular space in rotary hearth furnace is divided into different regions, different areas
Domain can set different atmosphere, and the atmosphere of different zones will not be interfered with each other, and realize the multi-functional utilization of rotary hearth furnace.
Barricade 3 includes hollow barricade 301 and solid barricade 302.Hollow barricade 301 is provided with reducing agent entrance 101, hollow
The inside up/down perforation of barricade 301.
Further, the bottom of barricade 3 and the vertical range of the upper surface of furnace bottom 2 are 10~20cm.Barricade bottom is to rotary hearth furnace
The distance of furnace bottom upper surface should ensure passing through for material, magnetizing roast area's atmosphere and reduction roasting area gas are ensured again
Atmosphere is not interfered with each other.
Reducing agent entrance 101 is arranged on the top of hollow barricade 301, and the inner hollow of hollow barricade 301 is entered as reducing agent
Enter the passage of rotary hearth furnace, can prevent reducing agent from burning and uneven cloth occurring in the process that falls.In pelletizing (material) by magnetizing
Roast area 6 enter reduction roasting area 8 when, can on pelletizing one layer of reducing agent of uniform fold, improve pelletizing degree of metalization.
Radiant tube 4 is arranged on body of heater 1, positioned at magnetizing roast area 6.Radiant tube 4 is regenerative gas combustion radiant tube,
Magnetizing roast area 6 is heated using radiant tube, and magnetizing roast area 6 can be made to keep neutral atmosphere, neutral atmosphere to be conducive to the magnetic of pelletizing
Change roasting.
Burner 5 is installed on body of heater 1, positioned at reduction roasting area 7.Burner 5 is regenerative gas burner, relative to
Electrical heating, gas heating energy consumption is smaller.Regenerative gas burner noise is small, long lifespan, flame stabilization, spreadability are good, burning
Completely, atmosphere is easily controllable.
Further, feeding mouth 102 and discharging opening 103 are set on body of heater 1, and feeding mouth 102 is arranged on outside magnetizing roast area 6
On the wall of side, discharging opening 103 is arranged on the lateral wall of reduction roasting area 7.
Used as the preferred scheme of the utility model embodiment, feeding mouth 102 is arranged on the solid barricade end in magnetizing roast area 6.
Discharging opening 103 is arranged on the solid barricade end in reduction roasting area 7.I.e. feeding mouth 102 and discharging opening 103 are located at the two of same barricade
Side.In other words, solid barricade 302 is set in the sector region between feeding mouth 102 and discharging opening 103.Feeding mouth 102 with
The radian of sector region is preferred with 10 °~20 ° between discharging opening 103.The setting of feeding mouth 102 and discharging opening 103 can prolong as far as possible
Time of the pelletizing long in rotary hearth furnace, improve reduction effect.
Used as the preferred scheme of the utility model embodiment, the radian of magnetizing roast area 6 is 90 °~120 °.Magnetizing roast area 6
Control climate be neutrality, ore can be heated to uniform temperature and decomposed, generate magnetic iron ore, magnetic iron ore is easier to be reduced.
Used as the preferred scheme of the utility model embodiment, the radian of reduction roasting area 7 is 220 °~260 °.Reduction roasting area
7 is reducing atmosphere, and pelletizing contacts generation reduction reaction with reducing agent, obtains metallized pellet in reduction roasting area 7.This practicality is new
The pelletizing of the rotary hearth furnace treatment of type embodiment, reduction effect is good, and degree of metalization is high, more conducively the utilization of subsequent metal pellet.
Further, it is reducing zone 701 and cooling zone 702 that reduction roasting distinguishes 7, and the radian of cooling zone 702 is 50 °~90 °,
The one end of cooling zone 702 is connected with discharging opening.The furnace roof of cooling zone 802 and two side are provided with water-cooling wall.
It is the subsequent treatment that reducing zone 701 and cooling zone 702 are conducive to pelletizing by 7 points of reduction roasting area.Water-cooling wall is installed
In the furnace roof of cooling zone 702 and two side, control water-cooling wall current make the temperature that the temperature control of cooling zone 702 is required to discharging.
Arrow in Fig. 1 and Fig. 2 represents the direction of motion of material, and dash area is reducing agent.
The utility model embodiment provide combination magnetizing roast and reduction roasting in the rotary hearth furnace of one, by turning bottom
Barricade is set in stove and realizes that two kinds of atmosphere do not interfere with each other in body of heater；Hollow barricade enters the passage of rotary hearth furnace as reducing agent, prevents
Burning and uneven cloth that only reducing agent falls；Material completes magnetizing roast and reduction roasting in rotary hearth furnace；Material is through magnetic
After changing roasting, reduction is more beneficial for；Reduction roasting area makes full use of the sensible heat of magnetizing roast area material, and energy consumption is small, low cost.
Embodiment
Pelletizing prepared by certain ore is entered by rotary hearth furnace feeding mouth, is rotated with the furnace bottom of rotary hearth furnace, successively by Roasting
Area and reduction roasting area are burnt, material turns bottom in the neutral atmosphere magnetizing roast of magnetizing roast area, reducing agent by the entrance of reducing agent entrance
Stove, the material after magnetization enters reduction roasting area and is uniformly laid a floor reducing agent, in the reduction roasting area with reducing atmosphere
Metallized pellet is reduced into, is finally discharged from discharging opening.
It should be noted that each embodiment above by reference to described by accompanying drawing is only used to illustrate the utility model rather than limit
Scope of the present utility model is made, it will be understood by those within the art that, do not departing from spirit of the present utility model and model
The modification carried out to the utility model on the premise of enclosing or equivalent, all should cover within the scope of the utility model.
Additionally, signified outer unless the context, the word for occurring in the singular includes plural form, and vice versa.In addition, removing non-specifically
Explanation, then all or part of of any embodiment can combine all or part of of any other embodiment and use.
Claims (10)
1. a kind of magnetization-reduction roasting one rotary hearth furnace, it is characterised in that including body of heater, furnace bottom, barricade, radiant tube and burning
Device；
The body of heater includes lateral wall, furnace roof and madial wall, and the lateral wall connects the madial wall, the body of heater by furnace roof
Cross-sectional area for annular；
The furnace bottom is ring-type, and positioned at body of heater lower section, the furnace bottom constitutes annular space with the body of heater；
In the body of heater, the barricade connects the lateral wall, furnace roof and madial wall to the dams setting, and the barricade is by institute
State annular space and be divided into magnetizing roast area and reduction roasting area, the barricade includes hollow barricade and solid barricade, the sky
Heart barricade is provided with reducing agent entrance, the hollow barricade inside up/down perforation；
The radiant tube and burner are installed on the body of heater.
2. rotary hearth furnace according to claim 1, it is characterised in that feeding mouth and discharging opening be set on the body of heater, it is described enter
Material mouth is arranged on magnetizing roast area lateral wall, and the discharging opening is arranged on reduction roasting area lateral wall.
3. rotary hearth furnace according to claim 2, it is characterised in that the feeding mouth is arranged on the solid gear in magnetizing roast area
Wall end.
4. rotary hearth furnace according to claim 2, it is characterised in that the discharging opening is arranged on the solid gear in reduction roasting area
Wall end.
5. rotary hearth furnace according to claim 1, it is characterised in that magnetizing roast area radian is 90 °~120 °.
6. rotary hearth furnace according to claim 1, it is characterised in that reduction roasting area radian is 220 °~260 °.
7. rotary hearth furnace according to claim 6, it is characterised in that reducing zone and cooling zone, institute are divided into the reduction roasting
Cooling zone radian is stated for 50 °~90 °, described cooling zone one end is connected with discharging opening, the cooling zone furnace roof and two side are installed
There is water-cooling wall.
8. rotary hearth furnace according to claim 1, it is characterised in that the barricade bottom and the furnace bottom vertical range be 10~
20cm。
9. rotary hearth furnace according to claim 1, it is characterised in that the radiant tube is located at the magnetizing roast area.
10. rotary hearth furnace according to claim 1, it is characterised in that the burner is located at the reduction roasting area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621249512.2U CN206257958U (en) | 2016-11-22 | 2016-11-22 | A kind of Magnetization reductive roasting one rotary hearth furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621249512.2U CN206257958U (en) | 2016-11-22 | 2016-11-22 | A kind of Magnetization reductive roasting one rotary hearth furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206257958U true CN206257958U (en) | 2017-06-16 |
Family
ID=59024547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621249512.2U Expired - Fee Related CN206257958U (en) | 2016-11-22 | 2016-11-22 | A kind of Magnetization reductive roasting one rotary hearth furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206257958U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106403593A (en) * | 2016-11-22 | 2017-02-15 | 江苏省冶金设计院有限公司 | Magnetizing-reducing roasting integrated rotary hearth furnace |
-
2016
- 2016-11-22 CN CN201621249512.2U patent/CN206257958U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106403593A (en) * | 2016-11-22 | 2017-02-15 | 江苏省冶金设计院有限公司 | Magnetizing-reducing roasting integrated rotary hearth furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20190102 Granted publication date: 20170616 |
|
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20220102 Granted publication date: 20170616 |
|
| 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: 20170616 Termination date: 20191122 |