CN106403595A - Oxidation-reduction roasting integrated rotary hearth furnace - Google Patents
Oxidation-reduction roasting integrated rotary hearth furnace Download PDFInfo
- Publication number
- CN106403595A CN106403595A CN201611046103.7A CN201611046103A CN106403595A CN 106403595 A CN106403595 A CN 106403595A CN 201611046103 A CN201611046103 A CN 201611046103A CN 106403595 A CN106403595 A CN 106403595A
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- Prior art keywords
- furnace
- rotary hearth
- hearth furnace
- heater
- roasting area
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- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B13/00—Furnaces with both stationary charge and progression of heating, e.g. of ring type, of type in which segmental kiln moves over stationary charge
- F27B13/02—Furnaces with both stationary charge and progression of heating, e.g. of ring type, of type in which segmental kiln moves over stationary charge of multiple-chamber type with permanent partitions; Combinations of furnaces
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/10—Making spongy iron or liquid steel, by direct processes in hearth-type furnaces
- C21B13/105—Rotary hearth-type furnaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B13/00—Furnaces with both stationary charge and progression of heating, e.g. of ring type, of type in which segmental kiln moves over stationary charge
- F27B13/06—Details, accessories, or equipment peculiar to furnaces of this type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2003/00—Type of treatment of the charge
- F27M2003/16—Treatment involving a chemical reaction
- F27M2003/165—Reduction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2003/00—Type of treatment of the charge
- F27M2003/16—Treatment involving a chemical reaction
- F27M2003/167—Oxydation
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Iron (AREA)
- Tunnel Furnaces (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses an oxidation-reduction roasting integrated rotary hearth furnace. The oxidation-reduction roasting integrated rotary hearth furnace comprises a furnace body, a furnace bottom, retaining walls, a chute, flues and a combustor; the furnace body includes an outer side wall, a furnace top and an inner side wall; the outer side wall is connected with the inner side wall through the furnace top; the cross sectional area of the furnace body is annular; the furnace bottom is annular, and is positioned below the furnace body; the furnace bottom and the furnace body form an annular space; the retaining walls are arranged in the furnace body; two retaining walls are provided; the retaining walls are connected with the outer side wall, the furnace top and the inner side wall; the retaining walls divide the annular space into an oxidation roasting area and a reduction roasting area; the flues are arranged at the furnace top of the oxidation roasting area; multiple flues are uniformly arranged in the circular direction; and the combustor is mounted on the furnace body. The rotary hearth furnace can integrally finish oxidation roasting and reduction roasting of materials, and is excellent in reduction effect and low in operation cost.
Description
Technical field
The invention belongs to technical field of metallurgical equipment, more particularly, to a kind of oxidation-reduction roasting one rotary hearth furnace.
Background technology
Rotary hearth furnace direct-reduction technique is nearly three ironmaking growing up during the decade and processes special nonferrous metallic ores
New technology.Rotary hearth furnace direct-reduction eliminates blast furnace coking flow process, is the technology of energy-conserving and environment-protective.Because this technique is to former
Material is less demanding with fuel, rationally can utilize natural resourcess, thus be paid high attention to by metallurgical and coloured industry.
Rotary hearth furnace oil ring shape siege, outboard sidewalls, furnace roof, combustion system etc. form.Side wall, furnace roof maintain static, siege
Circulation rotating is driven by furnace bottom transmission mechanism.The technological process of rotary hearth furnace is to add fine ore and reducing agent to make after 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
Former.The metallized pellet being 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) in rotary hearth furnace, the material of reduction roasting is carbonaceous pelletizing, and the contact between carbon and ferrum oxide closely, has good
Good fast restore condition.
(2) rotary hearth furnace reduction roasting technique is that the thin bed of material heats in high temperature, achievable fast restore, and furnace charge is gone back in stove
The former time is short.
(3) because the thin bed of material, furnace charge be not pressurized in rotary hearth furnace, and no relative motion between furnace charge and furnace lining, therefore right
The intensity requirement of furnace charge is not high, will not produce dough and body of heater resistance to material bonding phenomenon.
Current rotary hearth furnace is although the treating capacity of separate unit is larger, but single function, only reduction effect, some are needed
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 heat uneven needs to improve.
Content of the invention
In order to solve the above problems, the present invention proposes a kind of oxidation-reduction roasting one rotary hearth furnace, by treating material
Oxidizing roasting is carried out with reduction roasting priority, and barricade can be by oxidizing roasting area and reduction roasting area gas isolating, oxidizing roasting
Control climate can be oxidizing atmosphere by area, and reduction roasting area, by the material bedding one floor reducing agent after oxidized roasting, reduces
Roast area is reducing atmosphere, and reduction effect is good, and energy consumption is low, and operating cost is little.
It is an object of the invention to provide a kind of oxidation-reduction roasting one rotary hearth furnace, including：Body of heater, furnace bottom, barricade, slip
Groove, flue and burner；
Described body of heater includes lateral wall, furnace roof and medial wall, and described lateral wall connects described medial wall by furnace roof, described
The cross-sectional area of body of heater is annular；
Described furnace bottom is ring-type, and below described body of heater, described furnace bottom constitutes annular space with described body of heater；
In described body of heater, quantity is two to described dams setting, and described barricade connects described lateral wall, furnace roof and inner side
Wall, described annular space is divided into oxidizing roasting area and reduction roasting area by described barricade；
Described chute is installed on described furnace roof, and described reduction roasting area furnace roof arranges reducing agent entrance, described chute
It is connected with described reducing agent entrance, below described reducing agent entrance；
Described flue is arranged on oxidizing roasting area furnace roof, and multiple described flues are evenly arranged along circular direction；
Described burner is installed on described body of heater.
The furnace bottom of rotary hearth furnace is rotatable, drives material to move 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 arrange different atmosphere, and the atmosphere of zones of different will not
Interfere with each other the multi-functional utilization it is achieved that rotary hearth furnace.Multiple flues are set in the furnace roof of oxidizing roasting area rotary hearth furnace, for inciting somebody to action
A large amount of flue gases that oxidizing roasting area produces are discharged.
Further, setting feeding mouth and discharging opening on described body of heater, described feeding mouth is arranged on described oxidizing roasting area
On lateral wall, described discharging opening is arranged on described reduction roasting area lateral wall, and described feeding mouth and discharging opening are located at same gear
The both sides of wall.Between described feeding mouth and discharging opening, the radian of sector region is 10 °～20 °.Feeding mouth and the setting of discharging opening
The time in rotary hearth furnace for the pelletizing can be extended as far as possible, improve reduction effect.
As preferred embodiments of the present invention, described reducing agent feeding mouth is located at described reduction roasting area away from discharging opening one
End.
Specifically, described chute bottom and described furnace bottom vertical dimension are 8～15cm, described chute bottom and described barricade
Horizontal range is 10～20cm；Described chute is 30 °～60 ° with described 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 preferred embodiments of the present invention, described oxidizing roasting area radian is 90 °～120 °.The burner in oxidizing roasting area
For heat-storage type burner, oxidizing roasting area is controlled to oxidizing atmosphere, removes partial impurities, can improve while material is oxidized
The reproducibility of material.
As preferred embodiments of the present invention, described reduction roasting area radian is 220 °～260 °.The burning in reduction roasting area
Device is heat-storage type burner, and reduction roasting area is reducing atmosphere, and it is anti-that pelletizing contacts generation reduction in reduction roasting area with reducing agent
Should, obtain metallized pellet.
Further, reducing zone and cooling zone are divided in described reduction roasting, and described cooling zone radian is 50 °～90 °, institute
State cooling zone one end to be connected with discharging opening, described 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 requirement temperature.
As preferred embodiments of the present invention, described barricade bottom and described furnace bottom vertical dimension are 10～20cm.Barricade bottom
The distance of portion to the furnace bottom upper surface of rotary hearth furnace should ensure passing through of material, ensure oxidizing roasting area atmosphere again and go back
Former roast area atmosphere does not interfere with each other.
Specifically, it is uniformly arranged several passages in the lower section of described oxidizing roasting area furnace bottom along circular direction, aperture is 3
～6mm.Passage can be passed through oxygen or large quantity of air, keeps the oxidizing atmosphere in oxidizing roasting area.
The oxidation-reduction roasting one rotary hearth furnace that the present invention provides, can realize two kinds of atmosphere in body of heater by barricade mutual
Do not disturb；Material is integrally completed with reduction roasting in rotary hearth furnace internal oxidition roasting；After the oxidized roasting of material, reduction effect is good；
Reduction roasting area makes full use of the sensible heat of oxidizing roasting area material, and energy consumption is little, low cost.
Brief description
Fig. 1 is a kind of present invention oxidation-reduction roasting one rotary hearth furnace schematic top plan view；
Fig. 2 is the partial view of chute of the present invention.
In figure：
1- body of heater；101- reducing agent entrance；102- feeding mouth；103- discharging opening；104- passage；
2- furnace bottom；3- barricade；4- chute；5- flue；6- burner；7- oxidizing roasting area；8- reduction roasting area；801- is also
Former area；802- cooling zone.
Specific embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in more details, so that energy
The advantage enough more fully understanding the solution of the present invention and its various aspects.However, specific embodiments described below and enforcement
Example is only descriptive purpose, rather than limitation of the present invention.
As depicted in figs. 1 and 2, the embodiment of the present invention provides a kind of oxidation-reduction roasting one rotary hearth furnace, including：Body of heater
1st, furnace bottom 2, barricade 3, chute 4, flue 5 and burner 6.
Body of heater 1 includes lateral wall, furnace roof and medial wall, and lateral wall connects medial wall, the cross-sectional area of body of heater by furnace roof
For annular.
Furnace bottom 2 is ring-type, and below 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 entering 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, and quantity is two.Barricade 3 connects lateral wall, furnace roof and the medial 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 area
Domain can arrange different atmosphere, and the atmosphere of zones of different will not interfere with each other the multi-functional utilization it is achieved that rotary hearth furnace.
Further, barricade 3 bottom and the vertical dimension of furnace bottom 2 upper surface are 10～20cm.Barricade bottom is to rotary hearth furnace
The distance of furnace bottom upper surface should ensure passing through of material, ensure oxidizing roasting area atmosphere and reduction roasting area gas again
Atmosphere does not interfere with each other.
On reduction roasting area 8 furnace roof arrange reducing agent entrance 101, reducing agent feeding mouth 101 be located at reduction roasting area 8 away from
Discharging opening one end.
Chute 4 is installed on furnace roof, and chute 4 is connected with reducing agent entrance 101, below reducing agent entrance 101.Chute
4 bottoms are 8～15cm with the vertical dimension of furnace bottom 2 upper surface, and chute 4 bottom and barricade 3 horizontal range are 10～20cm；Chute
4 are 30 °～60 ° with furnace bottom 3 angle of inclination.Chute 4 is arranged on furnace roof, and the reducing agent for entering reducing agent entrance 101 draws
Lead on pelletizing so that one layer of reducing agent of uniform fold on pelletizing.
Flue 5 is arranged on oxidizing roasting area 7 furnace roof, and multiple flues 5 are evenly arranged along circular direction.Turn in oxidizing roasting area
The furnace roof of 7 bottom stoves arranges multiple flues 5, and a large amount of flue gases for producing oxidizing roasting area are discharged.
Burner 6 is installed on the two side of body of heater 1.Burner 6 is regenerative gas burner, with respect to electrical heating,
Gas heating energy consumption is less.Regenerative gas burner noise is little, life-span length, flame stabilization, spreadability are good, burning is complete, gas
Atmosphere is easily controllable.
Further, setting feeding mouth 102 and discharging opening 103 on body of heater 1, feeding mouth 102 is arranged on outside oxidizing roasting area 7
On the wall of side, discharging opening 103 is arranged on reduction roasting area 8 lateral wall, and feeding mouth 102 and discharging opening 103 are located at same barricade
Both sides.Between feeding mouth 102 and discharging opening 103, the radian of sector region is 10 °～20 °.Feeding mouth 102 and discharging opening 103
Setting can extend the time in rotary hearth furnace for the pelletizing as far as possible, improves reduction effect.
As the preferred scheme of the embodiment of the present invention, oxidizing roasting area 7 radian is 90 °～120 °.Oxidizing roasting area 7 controls
For oxidizing atmosphere, remove partial impurities while material is oxidized, the reproducibility of material can be improved.
As the preferred scheme of the embodiment of the present invention, reduction roasting area 8 radian is 220 °～260 °.Reduction roasting area 8 is
Reducing atmosphere, pelletizing contacts generation reduction reaction in reduction roasting area 8 with reducing agent, obtains metallized pellet.
Further, reduction roasting area 8 is divided into reducing zone 801 and cooling zone 802.Cooling zone 802 radian is 50 °～90 °,
Cooling zone 802 one end is connected with discharging opening 103, and cooling zone 802 furnace roof 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 to be conducive to the subsequent treatment of pelletizing.Water-cooling wall is arranged on cooling zone furnace roof and two side,
Water-cooling wall current are controlled to make cooling zone temperature control to discharging requirement temperature.
Specifically, the lower section of the furnace bottom in oxidizing roasting area 7 is uniformly arranged several passages 104, aperture along circular direction
For 3～6mm.Passage 104 can be passed through oxygen or large quantity of air to rotary hearth furnace, keeps 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, and the furnace bottom with rotary hearth furnace rotates, and successively passes through
Oxidizing roasting area and reduction roasting area, material (pelletizing) oxidizing roasting in oxidizing roasting area, the material after oxidation enters 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
Discharge from discharging opening.
The oxidation-reduction roasting one rotary hearth furnace that the present invention provides, by arranging barricade in rotary hearth furnace, realizes in body of heater
Two kinds of atmosphere do not interfere with each other；Material initial oxidation roasting in rotary hearth furnace, rear reduction roasting；After the oxidized roasting of material, reduction effect
Really good；Reduction roasting area makes full use of the sensible heat of oxidizing roasting area material, and energy consumption is little, low cost.
It should be noted that each embodiment above by reference to described by accompanying drawing only limits this in order to illustrate rather than
The scope of invention, it will be understood by those within the art that, right under the premise without departing from the spirit and scope of the present invention
Modification or equivalent that the present invention is carried out, all should cover within the scope of the present invention.Additionally, indication unless the context
Outward, the word occurring in the singular includes plural form, and vice versa.In addition, unless stated otherwise, then any embodiment
All or part of can use in conjunction with all or part of of any other embodiment.
Claims (10)
1. a kind of oxidation-reduction roasting one rotary hearth furnace is it is characterised in that include：Body of heater, furnace bottom, barricade, chute, flue and
Burner, wherein,
Described body of heater includes lateral wall, furnace roof and medial wall, and described lateral wall connects described medial wall, described body of heater by furnace roof
Cross-sectional area be annular；
Described furnace bottom is ring-type, and below described body of heater, described furnace bottom constitutes annular space with described body of heater；
In described body of heater, quantity is two to described dams setting, and described barricade connects described lateral wall, furnace roof and medial wall,
Described annular space is divided into oxidizing roasting area and reduction roasting area by described barricade；
Described chute is installed on described furnace roof, and described reduction roasting area furnace roof arranges reducing agent entrance, described chute and institute
State reducing agent entrance to connect, below described reducing agent entrance；
Described flue is arranged on oxidizing roasting area furnace roof, and multiple described flues are evenly arranged along circular direction；
Described burner is installed on described body of heater.
2. according to claim 1 rotary hearth furnace it is characterised in that setting feeding mouth and discharging opening on described body of heater, described enter
Material mouth is arranged on described oxidizing roasting area lateral wall, and described discharging opening is arranged on described reduction roasting area lateral wall, described
Feeding mouth and discharging opening are positioned at the both sides of same barricade.
3. according to claim 2 rotary hearth furnace it is characterised in that described reducing agent feeding mouth be located at described reduction roasting area remote
Separate out material mouth one end.
4. according to claim 1 rotary hearth furnace it is characterised in that described chute bottom and described furnace bottom vertical dimension be 8～
15cm, described chute bottom and described barricade horizontal range are 10～20cm；Described chute is 30 ° with described furnace bottom angle of inclination
～60 °.
5. according to claim 1 rotary hearth furnace it is characterised in that described oxidizing roasting area radian be 90 °～120 °.
6. according to claim 1 rotary hearth furnace it is characterised in that described reduction roasting area radian be 220 °～260 °.
7. according to claim 6 rotary hearth furnace it is characterised in that reducing zone and cooling zone, institute are divided in described reduction roasting
State cooling zone radian and be 50 °～90 °, described cooling zone one end is connected with discharging opening, described cooling zone furnace roof and two side are installed
There is water-cooling wall.
8. according to claim 1 rotary hearth furnace it is characterised in that described barricade bottom vertical with described furnace bottom upper surface away from
From for 10～20cm.
9. according to claim 1 rotary hearth furnace it is characterised in that the lower section of described oxidizing roasting area furnace bottom is equal along circular direction
The several passages of even setting, aperture is 3～6mm.
10. according to claim 2 rotary hearth furnace it is characterised in that between described feeding mouth and discharging opening sector region arc
Spend for 10 °～20 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611046103.7A CN106403595A (en) | 2016-11-22 | 2016-11-22 | Oxidation-reduction roasting integrated rotary hearth furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611046103.7A CN106403595A (en) | 2016-11-22 | 2016-11-22 | Oxidation-reduction roasting integrated rotary hearth furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106403595A true CN106403595A (en) | 2017-02-15 |
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ID=58083056
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611046103.7A Pending CN106403595A (en) | 2016-11-22 | 2016-11-22 | Oxidation-reduction roasting integrated rotary hearth furnace |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108893573A (en) * | 2018-06-08 | 2018-11-27 | 上海宝幢新能源科技有限公司 | A kind of combustion optimizing system and method for rotary hearth furnace |
| CN110986573A (en) * | 2019-12-09 | 2020-04-10 | 华北理工大学 | Muffle furnace and using method thereof |
| CN112941308A (en) * | 2021-01-28 | 2021-06-11 | 中冶南方（武汉）热工有限公司 | Chromium salt static roasting furnace |
| CN114941047A (en) * | 2022-04-29 | 2022-08-26 | 钢研晟华科技股份有限公司 | Rotary hearth furnace |
| CN115216575A (en) * | 2022-04-29 | 2022-10-21 | 钢研晟华科技股份有限公司 | Rotary hearth furnace and online cooling method thereof |
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| JPH11248358A (en) * | 1998-03-02 | 1999-09-14 | Daido Steel Co Ltd | Metal reducing apparatus |
| JP2012241205A (en) * | 2011-05-16 | 2012-12-10 | Nippon Steel Engineering Co Ltd | Method for reduction treatment of metal oxide |
| CN103074460A (en) * | 2013-01-05 | 2013-05-01 | 莱芜钢铁集团有限公司 | Rotary hearth furnace equipment for segment handling of iron ore and handling method |
| CN206469685U (en) * | 2016-11-22 | 2017-09-05 | 江苏省冶金设计院有限公司 | A kind of integral rotary hearth furnace of redox roasting |
-
2016
- 2016-11-22 CN CN201611046103.7A patent/CN106403595A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11248358A (en) * | 1998-03-02 | 1999-09-14 | Daido Steel Co Ltd | Metal reducing apparatus |
| JP2012241205A (en) * | 2011-05-16 | 2012-12-10 | Nippon Steel Engineering Co Ltd | Method for reduction treatment of metal oxide |
| CN103074460A (en) * | 2013-01-05 | 2013-05-01 | 莱芜钢铁集团有限公司 | Rotary hearth furnace equipment for segment handling of iron ore and handling method |
| CN206469685U (en) * | 2016-11-22 | 2017-09-05 | 江苏省冶金设计院有限公司 | A kind of integral rotary hearth furnace of redox roasting |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108893573A (en) * | 2018-06-08 | 2018-11-27 | 上海宝幢新能源科技有限公司 | A kind of combustion optimizing system and method for rotary hearth furnace |
| CN110986573A (en) * | 2019-12-09 | 2020-04-10 | 华北理工大学 | Muffle furnace and using method thereof |
| CN112941308A (en) * | 2021-01-28 | 2021-06-11 | 中冶南方（武汉）热工有限公司 | Chromium salt static roasting furnace |
| CN114941047A (en) * | 2022-04-29 | 2022-08-26 | 钢研晟华科技股份有限公司 | Rotary hearth furnace |
| CN115216575A (en) * | 2022-04-29 | 2022-10-21 | 钢研晟华科技股份有限公司 | Rotary hearth furnace and online cooling method thereof |
| CN115216575B (en) * | 2022-04-29 | 2024-04-09 | 钢研晟华科技股份有限公司 | Rotary hearth furnace and online cooling method thereof |
| CN114941047B (en) * | 2022-04-29 | 2024-04-09 | 钢研晟华科技股份有限公司 | Rotary hearth furnace |
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