CN206469685U - A kind of integral rotary hearth furnace of redox roasting - Google Patents
A kind of integral rotary hearth furnace of redox roasting Download PDFInfo
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- CN206469685U CN206469685U CN201621262363.3U CN201621262363U CN206469685U CN 206469685 U CN206469685 U CN 206469685U CN 201621262363 U CN201621262363 U CN 201621262363U CN 206469685 U CN206469685 U CN 206469685U
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- furnace
- heater
- rotary hearth
- hearth furnace
- roasting area
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Abstract
The utility model discloses a kind of integral rotary hearth furnace of redox roasting, including：Body of heater, furnace bottom, barricade, chute, flue 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, below body of heater, and furnace bottom constitutes annular space with body of heater；Dams setting is in body of heater, and quantity is two, and annular space is divided into oxidizing roasting area and reduction roasting area by barricade connection lateral wall, furnace roof and madial wall, barricade；Flue is arranged on oxidizing roasting area furnace roof, and multiple flues are evenly arranged along circular direction；Burner is installed on body of heater.Rotary hearth furnace of the present utility model can complete the oxidizing roasting 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 integral rotary hearth furnace of oxidationreduction roasting.
Background technology
Rotary hearth furnace direct-reduction technique is nearly three ironmaking grown up during the decade and handles special nonferrous metallic ores
New technology.Rotary hearth furnace direct-reduction eliminates blast furnace coking flow, is the technology of an 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 fixed, 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 as blast furnace or molten point of stove etc. raw material, 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 close, 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, and quick reduction can be achieved, and furnace charge is gone back in stove
The former time is short.
(3) 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, thus it is 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 function is single, only reduction effect, is needed for some
Want the raw material direct-reduction effect of oxidizing roasting 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 integral rotary hearth furnace of oxidationreduction roasting, by pending thing
The oxidizing roasting of material is successively carried out with reduction roasting, and barricade can aoxidize oxidizing roasting area and reduction roasting area gas isolating
Roast area can by control climate be oxidizing atmosphere, reduction roasting area by the floor reducing agent of material bedding one after oxidized roasting,
Reduction roasting area is reducing atmosphere, and reduction effect is good, and energy consumption is low, and operating cost is small.
The purpose of this utility model is to provide a kind of integral rotary hearth furnace of oxidationreduction roasting, including：Body of heater, furnace bottom, gear
Wall, chute, flue 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, below the body of heater, and the furnace bottom constitutes annular space with the body of heater；
The dams setting is in the body of heater, and quantity is two, and the barricade connects the lateral wall, furnace roof and inner side
The annular space is divided into oxidizing roasting area and reduction roasting area by wall, the barricade；
The chute is installed on the furnace roof, and reducing agent entrance, the chute are set on reduction roasting area furnace roof
It is connected with the reducing agent entrance, below the reducing agent entrance；
The flue is arranged on oxidizing roasting area furnace roof, and multiple flues are evenly arranged along circular direction；
The burner is 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.In oxidizing roasting area, the furnace roof of rotary hearth furnace sets multiple flues, for inciting somebody to action
A large amount of flue gases discharge that oxidizing roasting area is produced.
Further, feeding mouth and discharging opening are set on the body of heater, and the feeding mouth is arranged on the oxidizing roasting area
On lateral wall, the discharging opening is arranged on reduction roasting area lateral wall, and the feeding mouth and discharging opening are located at same gear
The both sides of wall.The radian of sector region is 10 °~20 ° between the feeding mouth and discharging opening.The setting of feeding mouth and discharging opening
Time of the pelletizing in rotary hearth furnace can be extended as far as possible, reduction effect is improved.
As the preferred scheme of the utility model, the reducing agent feeding mouth is located at the reduction roasting area away from discharging opening
One end.
Specifically, the chute bottom is 8~15cm, the chute bottom and the barricade with the furnace bottom vertical range
Horizontal range is 10~20cm；The chute is 30 °~60 ° with the furnace bottom angle of inclination.Chute is arranged on furnace roof, for inciting somebody to action
The reducing agent that reducing agent entrance enters is directed on pelletizing so that one layer of reducing agent of uniform fold on pelletizing.
As the preferred scheme of the utility model, oxidizing roasting area radian is 90 °~120 °.The combustion in oxidizing roasting area
Burner is heat-storage type burner, and the control of oxidizing roasting area is oxidizing atmosphere, and partial impurities are removed while material is oxidized, can
Improve the reproducibility of material.
As the preferred scheme of the utility model, reduction roasting area radian is 220 °~260 °.Reduction roasting area
Burner is heat-storage type burner, and reduction roasting area is reducing atmosphere, and pelletizing contacts generation in reduction roasting area also with reducing agent
Original reaction, obtains metallized 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.Reduction roasting is divided into
Reducing zone and cooling zone are conducive to the subsequent treatment of pelletizing.Water-cooling wall is arranged on cooling zone furnace roof and two side, controls water-cooling wall
Current make cooling zone temperature control to discharging require temperature.
As the preferred scheme of the utility model, the barricade bottom is 10~20cm with the furnace bottom vertical range.Gear
The distance of wall bottom to the furnace bottom upper surface of rotary hearth furnace should ensure passing through for material, ensure oxidizing roasting area atmosphere again
Do not interfered with each other with reduction roasting area atmosphere.
Specifically, being uniformly arranged several passages along circular direction in the lower section of oxidizing roasting area furnace bottom, aperture is 3
~6mm.Passage can be passed through oxygen or large quantity of air, keep the oxidizing atmosphere in oxidizing roasting area.
The integral rotary hearth furnace of oxidationreduction roasting that the utility model is provided, two kinds of gas in body of heater can be realized by barricade
Atmosphere is not interfere with each other；Material is integrally completed in the roasting of rotary hearth furnace internal oxidition with reduction roasting；After the oxidized roasting of material, reduction effect
It is good；Reduction roasting area makes full use of the sensible heat of oxidizing roasting area material, and energy consumption is small, cost is low.
Brief description of the drawings
Fig. 1 is a kind of integral rotary hearth furnace schematic top plan view of oxidationreduction roasting of the utility model；
Fig. 2 is the partial view of the utility model chute.
In figure：
1- bodies of heater；101- reducing agent entrances；102- feeding mouths；103- discharging openings；104- passages；
2- furnace bottoms；3- barricades；4- chutes；5- flues；6- burners；7- oxidizing roastings area；8- reduction roastings area；801- is also
Former area；802- cooling zones.
Embodiment
Below in conjunction with drawings and examples, embodiment of the present utility model is described in more details, with
Just it 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 the purposes of explanation, rather than to limitation of the present utility model.
As depicted in figs. 1 and 2, the utility model embodiment provides a kind of integral rotary hearth furnace of oxidationreduction roasting, including：
Body of heater 1, furnace bottom 2, barricade 3, chute 4, flue 5 and burner 6.
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
For 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 rotating band animal material of furnace bottom 2 rotates in rotary hearth furnace.
Barricade 3 is arranged in body of heater 1, and quantity is two.Barricade 3 connects lateral wall, furnace roof and the madial wall of body of heater, barricade
The annular space of rotary hearth furnace is divided into oxidizing roasting area 7 and reduction roasting area 8 by 3.
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.
Further, the vertical range of the bottom of barricade 3 and the upper surface of furnace bottom 2 is 10~20cm.Barricade bottom is to rotary hearth furnace
The distance of furnace bottom upper surface should ensure passing through for material, ensure oxidizing roasting area's atmosphere and reduction roasting area gas again
Atmosphere is not interfered with each other.
Reducing agent entrance 101 is set on the furnace roof of reduction roasting area 8, and it is remote that reducing agent feeding mouth 101 is located at reduction roasting area 8
Discharging opening one end.
Chute 4 is installed on furnace roof, and chute 4 is connected with reducing agent entrance 101, positioned at the lower section of reducing agent entrance 101.Chute
The vertical range of 4 bottoms and the upper surface of furnace bottom 2 is 8~15cm, and the bottom of chute 4 is 10~20cm with the horizontal range of barricade 3；Chute
4 be 30 °~60 ° with the angle of inclination of furnace bottom 3.Chute 4 is arranged on furnace roof, for the reducing agent that reducing agent entrance 101 enters to be drawn
Lead on pelletizing so that one layer of reducing agent of uniform fold on pelletizing.
Flue 5 is arranged on the furnace roof of oxidizing roasting area 7, and multiple flues 5 are evenly arranged along circular direction.Turn in oxidizing roasting area
The furnace roof of 7 bottom stoves sets multiple flues 5, and a large amount of flue gases for oxidizing roasting area to be produced are discharged.
Burner 6 is installed on the two side of body of heater 1.Burner 6 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 is complete, gas
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 oxidizing roasting area 7
On the wall of side, discharging opening 103 is arranged on the lateral wall of reduction roasting area 8, and feeding mouth 102 and discharging opening 103 are located at same barricade
Both sides.The radian of sector region is 10 °~20 ° between feeding mouth 102 and discharging opening 103.Feeding mouth 102 and discharging opening 103
Time of the pelletizing in rotary hearth furnace can be extended as far as possible by setting, and improve reduction effect.
As the preferred scheme of the utility model embodiment, the radian of oxidizing roasting area 7 is 90 °~120 °.Oxidizing roasting area 7
Control for oxidizing atmosphere, partial impurities to be removed while material is oxidized, the reproducibility of material can be improved.
As the preferred scheme of the utility model embodiment, the radian of reduction roasting area 8 is 220 °~260 °.Reduction roasting area
8 be reducing atmosphere, and pelletizing contacts generation reduction reaction with reducing agent in reduction roasting area 8, obtains metallized pellet.
Further, 8 points of reduction roasting area is reducing zone 801 and cooling zone 802.The radian of cooling zone 802 is 50 °~90 °,
The one end of cooling zone 802 is connected with discharging opening 103, and the furnace roof of cooling zone 802 and two side are provided with water-cooling wall.By reduction roasting area 8
It is divided into reducing zone 801 and cooling zone 802 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 to discharging require temperature.
Specifically, along circular direction being uniformly arranged several passages 104, aperture in the lower section of the furnace bottom in oxidizing roasting area 7
For 3~6mm.Passage 104 can be passed through oxygen or large quantity of air to rotary hearth furnace, keep the oxidizing atmosphere in oxidizing roasting area.
Arrow in Fig. 1 and Fig. 2 represents the direction of motion of material, and dash area is reducing agent.
The furnace bottom of rotary hearth furnace is rotatable, and pelletizing is entered by rotary hearth furnace feeding mouth, rotates, successively passes through with the furnace bottom of rotary hearth furnace
Oxidizing roasting area and reduction roasting area, material (pelletizing) oxidizing roasting in oxidizing roasting area, the material after oxidation enter reduction
One layer of reducing agent is uniformly laid in roast area, is reduced into metallized pellet in the reduction roasting area with reducing atmosphere, finally
From discharging opening discharge.
The integral rotary hearth furnace of oxidationreduction roasting that the utility model is provided, by setting barricade in rotary hearth furnace, realizes stove
Internal two kinds of atmosphere is not interfere with each other；Material initial oxidation in rotary hearth furnace is calcined, rear reduction roasting；After the oxidized roasting of material, also
Former effect is good；Reduction roasting area makes full use of the sensible heat of oxidizing roasting area material, and energy consumption is small, cost is low.
It should be noted that each embodiment above by reference to described by accompanying drawing is only 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 on the premise of enclosing to the utility model or equivalent substitution, all should cover within the scope of the utility model.
In addition, signified outer unless the context, the word occurred in the singular includes plural form, and vice versa.In addition, except non-specifically
Explanation, then all or part of of any embodiment can combine all or part of of any other embodiment to use.
Claims (10)
1. a kind of integral rotary hearth furnace of oxidationreduction roasting, it is characterised in that including：Body of heater, furnace bottom, barricade, chute, flue and
Burner, wherein,
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, below the body of heater, and the furnace bottom constitutes annular space with the body of heater；
The dams setting is in the body of heater, and quantity is two, and the barricade connects the lateral wall, furnace roof and madial wall,
The annular space is divided into oxidizing roasting area and reduction roasting area by the barricade；
The chute is installed on the furnace roof, and reducing agent entrance, the chute and institute are set on reduction roasting area furnace roof
The connection of reducing agent entrance is stated, below the reducing agent entrance；
The flue is arranged on oxidizing roasting area furnace roof, and multiple flues are evenly arranged along circular direction；
The burner is installed on the body of heater.
2. rotary hearth furnace according to claim 1, it is characterised in that set feeding mouth and discharging opening on the body of heater, it is described enter
Material mouth is arranged on oxidizing roasting area lateral wall, and the discharging opening is arranged on reduction roasting area lateral wall, described
Feeding mouth and discharging opening are located at the both sides of same barricade.
3. rotary hearth furnace according to claim 2, it is characterised in that it is remote that the reducing agent feeding mouth is located at the reduction roasting area
Separate out material mouth one end.
4. rotary hearth furnace according to claim 1, it is characterised in that the chute bottom and the furnace bottom vertical range be 8~
15cm, the chute bottom is 10~20cm with the barricade horizontal range；The chute is 30 ° with the furnace bottom angle of inclination
~60 °.
5. rotary hearth furnace according to claim 1, it is characterised in that oxidizing roasting 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 are divided into the reduction roasting, institute
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 it is vertical with the furnace bottom upper surface away from
From for 10~20cm.
9. rotary hearth furnace according to claim 1, it is characterised in that the lower section of oxidizing roasting area furnace bottom is equal along circular direction
Even to set several passages, aperture is 3~6mm.
10. rotary hearth furnace according to claim 2, it is characterised in that the arc of sector region between the feeding mouth and discharging opening
Spend for 10 °~20 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621262363.3U CN206469685U (en) | 2016-11-22 | 2016-11-22 | A kind of integral rotary hearth furnace of redox roasting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621262363.3U CN206469685U (en) | 2016-11-22 | 2016-11-22 | A kind of integral rotary hearth furnace of redox roasting |
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| Publication Number | Publication Date |
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| CN206469685U true CN206469685U (en) | 2017-09-05 |
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ID=59709223
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621262363.3U Expired - Fee Related CN206469685U (en) | 2016-11-22 | 2016-11-22 | A kind of integral rotary hearth furnace of redox roasting |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106403595A (en) * | 2016-11-22 | 2017-02-15 | 江苏省冶金设计院有限公司 | Oxidation-reduction roasting integrated rotary hearth furnace |
-
2016
- 2016-11-22 CN CN201621262363.3U patent/CN206469685U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106403595A (en) * | 2016-11-22 | 2017-02-15 | 江苏省冶金设计院有限公司 | Oxidation-reduction roasting integrated rotary hearth furnace |
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| PP01 | Preservation of patent right |
Effective date of registration: 20190102 Granted publication date: 20170905 |
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| PP01 | Preservation of patent right | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20220102 Granted publication date: 20170905 |
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| PD01 | Discharge of preservation of patent | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170905 Termination date: 20191122 |
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| CF01 | Termination of patent right due to non-payment of annual fee |