CN2645011Y - Air-cooled negative pressure sintering furnace - Google Patents
Air-cooled negative pressure sintering furnace Download PDFInfo
- Publication number
- CN2645011Y CN2645011Y CN 03232593 CN03232593U CN2645011Y CN 2645011 Y CN2645011 Y CN 2645011Y CN 03232593 CN03232593 CN 03232593 CN 03232593 U CN03232593 U CN 03232593U CN 2645011 Y CN2645011 Y CN 2645011Y
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- air
- furnace
- shaft
- sintering furnace
- negative pressure
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Abstract
The utility model relates to an air-cooling negative pressure sintering furnace, comprising a furnace shaft with iron oxide particles filled in an inner chamber and a melting chamber. A central barrel is positioned in the center of the inner chamber and connected with a discharge fan by a connecting pipe at the lower end. The melting chamber is arranged at the middle part of furnace shaft peripherally and a material outlet is positioned at the lower end, a heat reclaim unit is arranged at the material outlet; the melting chamber is communicated with the heat reclaim unit through a blast pipe; an air cooling furnace bin with an inlet air grate bar is positioned at the material outlet at the bottom end of furnace shaft and communicated with melting chamber by a wind pipe; an open/closing movable air sluice gate is positioned at the melting chamber. In case of discharge fan failure or power supply failure, negative pressure is formed at the lower end by the cold air the at the upper end after opening the sluice gate; a stream of natural circulating wind is produced and the hot air in the furnace is extracted. The entry of cold air into the sintering furnace through grate bar serves for air cooling and guarantees the stable operation of sintering furnace, which greatly prolongs the operational life of sintering furnace.
Description
Technical field
The utility model relates to the sintering furnace of the iron oxide sphere of powder that a kind of metallurgy industry uses, particularly a kind of sintering furnace of fire coal.
Background technology
As everyone knows,, need that at first iron powder is added water iron powder is made the iron oxide sphere of powder, carry out sintering, can in iron-smelting furnace, smelt iron then with iron powder ironmaking.So-called sintering is meant brown iron oxide is added the pelletizing that water is made, and is positioned in the sintering furnace high-temperature roasting.What be widely used at present is the shaft furnace sintering, and the operation under positive pressure operation exists shortcomings such as burning is insufficient, energy consumption is high, sintering quality is poor, pollution is big.In order to overcome above-mentioned defective, the inventor has designed a kind of negative pressure sintering furnace in Chinese patent 98225489.X, but yet exist insufficient, the energy utilization of burning not exclusively, defectives such as operating environment difference, for this reason, the inventor has designed the energy-saving negative pressure sintering furnace of a kind of water-cooling type in Chinese patent application number 03229790.4, but, this sintering furnace is only applicable to the water power person of enriching, and simultaneously, must possess circulating water pool, water pump, must be equipped with diesel engine during power failure, therefore limit its application.
Summary of the invention
The utility model technical issues that need to address are a kind of air-cooled negative pressure sintering furnaces of design, to overcome the above-mentioned defective that prior art exists.
In order to solve the problems of the technologies described above, the utility model adopts following technical scheme: basic structure of the present utility model is same as the prior art, the shaft and the burner hearth that comprise the inner chamber filling iron oxide sphere of powder, the shaft lumen centers has a central cylinder, the central cylinder lower end connects with air exhauster by tube connector and is connected, burner hearth is distributed in around the periphery, middle part of shaft, the central cylinder top is than the low one section effective depth in shaft top, being enough to make gas after the burning to flow into central tube dignity extracts out, the shaft bottom is provided with material outlet, so that therefrom discharging of the iron ball of thermal sintering, the material outlet place is provided with heat reclaim unit, burner hearth is connected with said heat reclaim unit by ajutage, it is characterized in that: material outlet place, shaft bottom is provided with the air cold furnace bin that comprises the air intake fire grate, be connected by airduct between air cold furnace bin and the burner hearth, on burner hearth, be provided with the movable ventilation gate that to open or to close.
During operate as normal, closing gate, burner hearth internal combustion cleaned coal, combustion gas enters the shaft inner chamber from burner hearth, under the air draught effect of air exhauster, gas backstreaming after the burning enters central cylinder, and extract out by air exhauster by tube connector, then the shaft inner chamber is in the negative pressure operation, the filling iron oxide sphere of powder in the annular housing between shaft inwall and central cylinder outer wall, the iron oxide sphere of powder is under the heating of combustion gas and sintering finished, then in the discharging of restoration of lower stack material outlet.The needed oxygen that burns then enters burner hearth by air-supply arrangement.
When blower fan breaks down or have a power failure, gate is opened, to produce a kind of negative pressure by cold lower end, furnace air upper end, form a kind of Natural Circulation wind, Hot air quilt in the air cold furnace bin is extracted out, and cold air replenishes by fire grate and enters sintering furnace, has played the effect of air cooling, guarantee the stable operation of sintering furnace, can prolong the service life of sintering furnace greatly.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is a stereogram of the present utility model.
Fig. 3 is an air cold furnace bin.
Fig. 4 be among Fig. 3 to schematic diagram.
The specific embodiment
Referring to Fig. 1 and Fig. 2, the utility model comprises the shaft 2 and the burner hearth 12 of the inner chamber filling iron oxide sphere of powder, the lumen centers of shaft 2 has a central cylinder 3, central cylinder 3 lower ends connect with air exhauster by tube connector 6 and are connected, burner hearth 12 is distributed in around the periphery, middle part of shaft 2, and central cylinder 3 tops are than the low one section effective depth in shaft 2 tops; Shaft 2 bottoms are provided with material outlet 8, material outlet 8 places are provided with heat reclaim unit 7, burner hearth 12 is connected with heat reclaim unit 7 by ajutage 11, it is characterized in that, material outlet 8 places, shaft bottom are provided with the air cold furnace bin 14 that comprises air intake fire grate 15, be connected by airduct between air cold furnace bin 14 and the burner hearth 12, on burner hearth 12, be provided with the movable ventilation gate 13 that to open or to close.
By Fig. 3 and Fig. 4 as seen, said air intake fire grate 15 comprises a plurality of annulus of arranging along axis normal, is provided with the space between the annulus, so that circulation of air.
Claims (3)
1. air-cooled negative pressure sintering furnace, the shaft (2) and the burner hearth (12) that comprise the inner chamber filling iron oxide sphere of powder, the lumen centers of shaft (2) has a central cylinder (3), central cylinder (3) lower end connects with air exhauster by tube connector (6) and is connected, burner hearth (12) is distributed in around the periphery, middle part of shaft (2), shaft (2) bottom is provided with material outlet (8), material outlet (8) locates to be provided with heat reclaim unit (7), burner hearth (12) is connected with heat reclaim unit (7) by ajutage (11), it is characterized in that, material outlet 8 places, shaft bottom also are provided with the air cold furnace bin (14) that comprises air intake fire grate (15), be connected by airduct between air cold furnace bin (14) and the burner hearth (12), on burner hearth (12), be provided with the movable ventilation gate (13) that to open or to close.
2. air-cooled negative pressure sintering furnace according to claim 1 is characterized in that, said air intake fire grate (15) comprises the annulus of arranging along axis normal.
3. air-cooled negative pressure sintering furnace according to claim 1 is characterized in that, is provided with the space between the annulus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03232593 CN2645011Y (en) | 2003-06-27 | 2003-06-27 | Air-cooled negative pressure sintering furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03232593 CN2645011Y (en) | 2003-06-27 | 2003-06-27 | Air-cooled negative pressure sintering furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2645011Y true CN2645011Y (en) | 2004-09-29 |
Family
ID=34291505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03232593 Expired - Fee Related CN2645011Y (en) | 2003-06-27 | 2003-06-27 | Air-cooled negative pressure sintering furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2645011Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112944906A (en) * | 2021-03-16 | 2021-06-11 | 洛阳黑匣智能科技有限公司 | Material sintering furnace and material sintering method |
-
2003
- 2003-06-27 CN CN 03232593 patent/CN2645011Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112944906A (en) * | 2021-03-16 | 2021-06-11 | 洛阳黑匣智能科技有限公司 | Material sintering furnace and material sintering method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |