CN105907909A - Dual-loop rotary hearth furnace - Google Patents
Dual-loop rotary hearth furnace Download PDFInfo
- Publication number
- CN105907909A CN105907909A CN201610402701.7A CN201610402701A CN105907909A CN 105907909 A CN105907909 A CN 105907909A CN 201610402701 A CN201610402701 A CN 201610402701A CN 105907909 A CN105907909 A CN 105907909A
- Authority
- CN
- China
- Prior art keywords
- furnace
- hearth
- furnace wall
- wall
- burner hearth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
-
- 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
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
- F27B9/16—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a circular or arcuate path
-
- 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
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
-
- 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
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
- F27B9/36—Arrangements of heating devices
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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)
- Tunnel Furnaces (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
The invention discloses a dual-loop rotary hearth furnace. The dual-loop rotary hearth furnace comprises a furnace top, furnace walls, hearths and a furnace bottom. The furnace walls include the inner furnace wall and the outer furnace wall. The furnace top, the outer furnace wall, the inner furnace wall and the furnace bottom form an annular furnace body. The annular furnace body internally comprises the inner ring hearth and the outer ring hearth sequentially from inside to outside, and the inner ring hearth and the outer ring hearth are of a concentric circle structure. By means of the inner ring hearth and the outer ring hearth, space for the reducing atmosphere is provided. A plurality of heat supply nozzles are installed on the furnace top, the inner furnace wall and the outer furnace wall. The bottom of the inner furnace wall and the bottom of the outer furnace wall are connected with the furnace bottom through sealing slots. The furnace bottom comprises a circular disc, a fireproofing material layer and a furnace charge layer sequentially from bottom to top. A discharging machine is installed above the furnace charge layer, and a discharging opening corresponding to the discharging machine is formed between the outer ring hearth and the inner ring hearth. Since the dual hearths are arranged for distribution, the processing capacity of the rotary hearth furnace is improved; and meanwhile furnace charges are unloaded from the middle, so that unloading is facilitated, and the civil engineering cost is reduced. The dual-loop rotary hearth furnace further has the advantages that a system is simple and implementation is easy.
Description
Technical field
The present invention relates to be reduced directly rotary hearth furnace technology, particularly to a kind of dicyclo rotary hearth furnace.
Background technology
Rotary hearth furnace is one of nucleus equipment of coal-based direct reduction.At present, rotary hearth furnace is widely used in process steel
Iron ion dust mud contaning, vanadium titano-magnetite, the difficult field such as ore dressing, lateritic nickel ore.The rotary hearth furnace burner hearth width of prior art
Degree is limited by the restriction of discharging machine, it is difficult to realize the maximization of equipment, cause the rotary hearth furnace of unit production capacity to invest greatly,
Land utilization ratio is little；The most existing rotary hearth furnace is from burner hearth one side discharge, and discharge chute need to be kept at an angle,
Cause rotary hearth furnace bottom to dig pit relatively deep, considerably increase the construction investment of rotary hearth furnace.
Summary of the invention
Goal of the invention: it is an object of the invention to solve defect present in prior art, proposes a kind of pair and badly turns
End stove.
Technical scheme: a kind of dicyclo rotary hearth furnace of the present invention, including furnace roof, furnace wall, burner hearth and furnace bottom,
Described furnace wall includes that inner furnace wall and outer furnace wall, furnace roof, outer furnace wall, inner furnace wall and furnace bottom form ring-type body of heater, ring
The inside of shape body of heater includes the inner ring burner hearth in concentric structure and outer shroud burner hearth the most successively；Furnace roof, interior
Being mounted on some heat supply burners on furnace wall and outer furnace wall, seal groove is all passed through in the bottom of inner furnace wall and outer furnace wall
It is connected with the side sealing plate of furnace bottom；Described furnace bottom includes the ring disk, refractory masses and furnace charge the most successively
Layer, furnace charge layer be arranged above discharging machine, be provided with discharging opening, discharging between outer shroud burner hearth and inner ring burner hearth
Mouth is connected with discharge nozzle.
Further, be all sequentially provided with in described inner ring burner hearth and outer shroud burner hearth corresponding loading area, the thermal treatment zone,
Middle temperature reducing zone, high temperature reduction district and discharging smoke evacuation district.
Further, described the ring disk is the bottom that an overall the ring disk is installed on body of heater, or be two independent
The ring disk is respectively arranged in the bottom of furnace body that inner ring burner hearth is corresponding with outer shroud burner hearth.
Further, the sealing medium in described seal groove is industry water.
Further, the thickness of described refractory masses is 600～2000mm, and the thickness of furnace charge layer is
20～80mm.
Further, described discharging machine is spiral scraper, including the motor being installed on outer furnace wall, is installed on
Screw spindle in body of heater and be connected to the shaft coupling of screw spindle and motor.
Beneficial effect: the present invention, by arranging twin furnace cloth, increases rotary hearth furnace equipment disposal ability, stove simultaneously
Material is from intermediate discharging, it is simple to discharging and reduction civil engineering costs.The present invention the most also has that system is simple, implements
The advantage such as easily.
Accompanying drawing explanation
Fig. 1 is the overall plan view of the present invention；
Fig. 2 is the B-B sectional schematic diagram in Fig. 1；
Fig. 3 is the A-A sectional schematic diagram in Fig. 1.
Detailed description of the invention
Below technical solution of the present invention is described in detail, but protection scope of the present invention is not limited to described
Embodiment.
As shown in Figure 1 to Figure 3, a kind of dicyclo rotary hearth furnace of the present invention, including furnace roof 1, furnace wall 2, burner hearth 3 and
Furnace bottom 4, furnace wall 2 includes inner furnace wall 2-2 and outer furnace wall 2-1, furnace roof 1, outer furnace wall 2-1, inner furnace wall 2-2 and stove
The end 4, forms ring-type body of heater, and the inside of ring-type body of heater includes the inner ring burner hearth in concentric structure the most successively
3-2 and outer shroud burner hearth 3-1, inner ring burner hearth 3-2 and outer shroud burner hearth 3-1 provide the space of reducing atmosphere；Furnace roof 1,
Some heat supply burners 6, inner furnace wall 2-2 and outer furnace wall 2-1 it is mounted on inner furnace wall 2-2 and outer furnace wall 2-1
Bottom is all connected with furnace bottom 4 by seal groove 5；Furnace bottom 4 include the most successively the ring disk, refractory masses and
Furnace charge layer, furnace charge layer be arranged above discharging machine 7, be provided with between outer shroud burner hearth 3-1 and inner ring burner hearth 3-2
The discharging opening 8 corresponding with discharging machine 7, discharge nozzle 9 is connected with discharging opening.
In Fig. 3, the interval region in the middle of inner ring burner hearth 3-2 and outer shroud burner hearth 3-1 is zonary structure, its underpart cloth
Put sealed cistern 5.
Furnace roof 1 and furnace bottom 4 is connected between above-mentioned inner furnace wall 2-2 and outer furnace wall 2-1.Inner ring burner hearth 3-2 and outer shroud
All it is sequentially provided with corresponding loading area, the thermal treatment zone, middle temperature reducing zone, high temperature reduction district in burner hearth 3-1 and unloads
Material smoke evacuation district (section in other region is identical with the structure of B-B section in Fig. 2 in addition to discharging smoke evacuation district), the ring disk
It is the overall the ring disk bottom that is installed on body of heater, or is that two independent the ring disk are respectively arranged in inner ring burner hearth
The bottom of furnace body that 3-2 is corresponding with outer shroud burner hearth 3-1.Sealing medium in seal groove 5 is industry water.Refractory material
The thickness of layer is 600～2000mm, and the thickness of furnace charge layer is 20～80mm.
Discharging machine 7 is spiral scraper, including the motor being installed on outer furnace wall 2-1, the spiral shell that is installed in body of heater
Revolve main shaft and be connected to the shaft coupling of screw spindle and motor.
Claims (6)
1. a dicyclo rotary hearth furnace, including furnace roof, furnace wall, burner hearth and furnace bottom, it is characterised in that: described stove
Wall includes that inner furnace wall and outer furnace wall, furnace roof, outer furnace wall, inner furnace wall and furnace bottom form ring-type body of heater, ring-type body of heater
Inside include the inner ring burner hearth in concentric structure and outer shroud burner hearth the most successively；Furnace roof, inner furnace wall with
And on outer furnace wall, it being mounted on some heat supply burners, the bottom of inner furnace wall and outer furnace wall is all by seal groove and furnace bottom
Side sealing plate be connected；Described furnace bottom includes the ring disk, refractory masses and furnace charge layer, stove the most successively
The bed of material be arranged above discharging machine, be provided with discharging opening between outer shroud burner hearth and inner ring burner hearth, discharging opening with go out
Material pipe connects.
Dicyclo rotary hearth furnace the most according to claim 1, it is characterised in that: described inner ring burner hearth and outer ring oven
Corresponding loading area, the thermal treatment zone, middle temperature reducing zone, high temperature reduction district and discharging smoke evacuation all it is sequentially provided with in thorax
District.
Dicyclo rotary hearth furnace the most according to claim 1, it is characterised in that: described the ring disk be one overall
The ring disk is installed on the bottom of body of heater, or is that two independent the ring disk are respectively arranged in inner ring burner hearth and outer shroud burner hearth pair
The bottom of furnace body answered.
Dicyclo rotary hearth furnace the most according to claim 1, it is characterised in that: the sealing in described seal groove is situated between
Matter is industry water.
Dicyclo rotary hearth furnace the most according to claim 1, it is characterised in that: the thickness of described refractory masses
Being 600～2000mm, the thickness of furnace charge layer is 20～80mm.
Dicyclo rotary hearth furnace the most according to claim 1, it is characterised in that: described discharging machine is spiral scraper
Machine, the screw spindle including the motor being installed on outer furnace wall, being installed in body of heater and be connected to screw spindle
Shaft coupling with motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610402701.7A CN105907909A (en) | 2016-06-08 | 2016-06-08 | Dual-loop rotary hearth furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610402701.7A CN105907909A (en) | 2016-06-08 | 2016-06-08 | Dual-loop rotary hearth furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105907909A true CN105907909A (en) | 2016-08-31 |
Family
ID=56750591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610402701.7A Pending CN105907909A (en) | 2016-06-08 | 2016-06-08 | Dual-loop rotary hearth furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105907909A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108004365A (en) * | 2018-01-22 | 2018-05-08 | 山东钢铁股份有限公司 | A kind of bicyclic parallel rotary hearth furnace and pelletizing production technique |
| CN109439903A (en) * | 2018-12-26 | 2019-03-08 | 东北大学 | A kind of novel rotary hearth furnace hearth structure and its corresponding distribution device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007100076A1 (en) * | 2006-03-03 | 2007-09-07 | Kabushiki Kaisha Kobe Seiko Sho | Rotary hearth |
| CN201555446U (en) * | 2009-12-16 | 2010-08-18 | 北京京诚凤凰工业炉工程技术有限公司 | Smelting rotary hearth furnace for directly reducing nickel |
| CN101963449A (en) * | 2009-07-22 | 2011-02-02 | 吴道洪 | Double-layer ring-shaped rotary hearth furnace |
| CN203037048U (en) * | 2012-12-20 | 2013-07-03 | 黄冈市中洲安达热工设备有限公司 | Direct-reduction controlled-atmosphere rotary hearth furnace |
| CN203274485U (en) * | 2013-05-08 | 2013-11-06 | 重庆赛迪工业炉有限公司 | Spiral material discharging device |
| CN205839052U (en) * | 2016-06-08 | 2016-12-28 | 江苏省冶金设计院有限公司 | A kind of dicyclo rotary hearth furnace |
-
2016
- 2016-06-08 CN CN201610402701.7A patent/CN105907909A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007100076A1 (en) * | 2006-03-03 | 2007-09-07 | Kabushiki Kaisha Kobe Seiko Sho | Rotary hearth |
| CN101963449A (en) * | 2009-07-22 | 2011-02-02 | 吴道洪 | Double-layer ring-shaped rotary hearth furnace |
| CN201555446U (en) * | 2009-12-16 | 2010-08-18 | 北京京诚凤凰工业炉工程技术有限公司 | Smelting rotary hearth furnace for directly reducing nickel |
| CN203037048U (en) * | 2012-12-20 | 2013-07-03 | 黄冈市中洲安达热工设备有限公司 | Direct-reduction controlled-atmosphere rotary hearth furnace |
| CN203274485U (en) * | 2013-05-08 | 2013-11-06 | 重庆赛迪工业炉有限公司 | Spiral material discharging device |
| CN205839052U (en) * | 2016-06-08 | 2016-12-28 | 江苏省冶金设计院有限公司 | A kind of dicyclo rotary hearth furnace |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108004365A (en) * | 2018-01-22 | 2018-05-08 | 山东钢铁股份有限公司 | A kind of bicyclic parallel rotary hearth furnace and pelletizing production technique |
| CN109439903A (en) * | 2018-12-26 | 2019-03-08 | 东北大学 | A kind of novel rotary hearth furnace hearth structure and its corresponding distribution device |
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