CN202543349U - Bin for preheating aluminum oxide - Google Patents
Bin for preheating aluminum oxide Download PDFInfo
- Publication number
- CN202543349U CN202543349U CN2012200356811U CN201220035681U CN202543349U CN 202543349 U CN202543349 U CN 202543349U CN 2012200356811 U CN2012200356811 U CN 2012200356811U CN 201220035681 U CN201220035681 U CN 201220035681U CN 202543349 U CN202543349 U CN 202543349U
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- CN
- China
- Prior art keywords
- feed bin
- flue gas
- gas recovery
- aluminum oxide
- recovery channel
- 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.)
- Expired - Fee Related
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- Electrolytic Production Of Metals (AREA)
Abstract
The utility model discloses a bin for preheating aluminum oxide. A crust breaking device with the same discharging direction as that of the bin is arranged in the bin, and flue gas recovery pipes are arranged between the crust breaking device and the inner wall of the bin. According to the technical scheme, the high-temperature gas in the flue gas recovery pipes extensively exchange heat with the aluminum oxide serving as a raw material in the bin, so the aluminum oxide is heated, energy is saved and consumption is reduced.
Description
Technical field
The utility model relates to electrolysis blanking technical field, relates in particular to a kind of feed bin that aluminum oxide is carried out preheating.
Background technology
The raw alumina of aluminium cell falls to the fused electrolyte from the electrolyzer top, in ionogen, dissolves behind the absorption heat, participates in chemical reaction.Heat in the aluminium cell relies on a large amount of electric energy converted, therefore, is the important means that reduces the loss of electrolysis production electric heating with the alumina raw material preheating.Existing aluminum oxide feed mode aluminum oxide gets into that material temperature is 50 ℃ before the electrolyzer, still absorbs a large amount of heat energy to alumina dissolution.
In the electrolysis production process, produce great amount of high-temperature gas, and heat dissipation capacity is big on the electrolysis slot number, flue-gas temperature can reach 120-150 ℃ in the groove, discharges from flue end but high-temperature gas directly gets into the electrolysis flue gas TFL, and high-temperature gas heat energy is unrealized and is effectively utilized.
The utility model content
The utility model embodiment provides a kind of feed bin that aluminum oxide is carried out preheating, and through improving the smoke discharge tube road, can make increases effective heat transfer area between high-temperature flue gas and the alumina powder, play the effect of heated oxide aluminium.
For realizing above-mentioned purpose, the utility model embodiment provides following technical scheme:
A kind of feed bin that aluminum oxide is carried out preheating, said feed bin set inside have and the consistent crust breaker of feed bin discharging direction, between said crust breaker and said feed bin inwall, are provided with the flue gas recovery channel.
Preferably, the inlet mouth of flue gas recovery channel is positioned at said feed bin lower end, and the venting port of said flue gas recovery channel is positioned at said feed bin top.
Preferably, the flue gas recovery channel is an even number, lays respectively at the relative both sides of said feed bin axis.
Preferably, on every said flue gas recovery channel at least one bend is set.
Preferably, adjacent said flue gas recovery channel is provided with at least one tie point.
Preferably, the said flue gas recovery channel between adjacent two tie points is a tetragon.
Preferably, said flue gas recovery channel is a volution.
Compared with prior art, the utlity model has following beneficial effect:
1, recovery waste heat: to the present situation that waste heat is not recycled and alumina raw material must preheating; Through improving the smoke discharge tube road; Making increases effective heat transfer area between flue gas and the aluminum oxide, utilize high-temperature flue gas heated oxide aluminium, and the heat of recovery plays the effect of heated oxide aluminium;
2, optimize technology: aluminum oxide can further improve temperature through after the preheating of flue, thus the temperature head of minimizing and electrolyte solution; Minimizing is because of the required heat-energy losses of heated oxide al dissolution; And can shorten the dissolution rate of aluminum oxide, and reduce bearth precipitation, it is stable to help electrolyzer.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use among the embodiment below; Obviously, the accompanying drawing in describing below only is some embodiment of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural profile synoptic diagram of the utility model embodiment;
Wherein, 1, feed bin, 2, crust breaker, 3, the alumina blanking mouth, 4, the feed bin discharge port, 5, flue gas recovery channel; 6, inlet mouth, 7, venting port.
Embodiment
To combine the described embodiment of accompanying drawing among the utility model embodiment below only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
The utility model embodiment is provided with the flue gas recovery channel between crust breaker and feed bin inwall, make high-temperature gas and the interior alumina raw material of feed bin in the flue gas recovery channel produce large-area heat exchange, thereby heated oxide aluminium is energy-saving and cost-reducing.Be specific embodiment below, referring to Fig. 1.
A kind of feed bin that aluminum oxide is carried out preheating, said feed bin 1 set inside has the crust breaker 2 consistent with feed bin discharging direction, between said crust breaker 2 and said feed bin 1 inwall, is provided with flue gas recovery channel 5.
Flue gas in the flue gas recovery channel 5 overflows from 900-1200 ℃ aluminium cell, carries a large amount of heats; When flue gas recovery channel 5 was discharged, flue gas in the flue gas recovery channel 5 and flue gas recovery channel 5 outer raw materials carried out heat exchange, raw material is carried out preheating, and reduce the thermal pollution of fume emission at flue gas.
Preferably, the inlet mouth 6 of flue gas recovery channel 5 is positioned at feed bin 1 lower end, and the venting port 7 of said flue gas recovery channel 5 is positioned at said feed bin 1 top.
Aluminum oxide or other raw materials get into feed bin 1 from the alumina blanking mouth 3 of feed bin 1 upper end, and under action of gravity, slowly the feed bin discharge port 4 to feed bin 1 lower end moves, and falls to the electrolyzer from feed bin discharge port 4.And the inlet mouth 6 of flue gas recovery channel 5 is positioned at feed bin 1 lower end, and venting port 7 is positioned at feed bin 1 upper end, and the heading of high-temperature flue gas is opposite with the heading of raw material, to improve the heat transfer rate.
Preferably, flue gas recovery channel 5 is an even number, lays respectively at the relative both sides of feed bin 1 axis, then in horizontal relative position raw material farthest, carries out heat diffusion, strengthens pre-heat effect.
Preferably, on every flue gas recovery channel 5 at least one bend is set; Bend makes the raw material contact area in flue gas recovery channel 5 and the feed bin 1 increase, and guarantees pre-heat effect.When having a plurality of bend, flue gas recovery channel 5 is a volution, can strengthen the contact area with raw material equally, quickens preheating.
Adjacent flue gas recovery channel 5 is provided with at least one tie point, and also heat-shift each other between the flue gas in the then different flue gas recovery channels 5 avoids occurring the inconsistent situation of regional temperature.
Flue gas recovery channel 5 between two adjacent tie points is a tetragon; This tetragon can continue heating with the raw material of tetragon inside; Consistent until its temperature with flue gas recovery channel 5, then form a pyrotoxin that relative duct size is bigger, guarantee pre-heat effect.
More than a kind of feed bin that aluminum oxide is carried out preheating that the utility model embodiment is provided carried out detailed introduction; Use concrete example among this paper the principle and the embodiment of the utility model have been set forth, only be used for helping to understand the utility model core concept; Should not be construed as restriction to the utility model.
Claims (7)
1. feed bin that aluminum oxide is carried out preheating, said feed bin set inside has and the consistent crust breaker of feed bin discharging direction, it is characterized in that, between said crust breaker and said feed bin inwall, is provided with the flue gas recovery channel.
2. a kind of feed bin that aluminum oxide is carried out preheating according to claim 1 is characterized in that the inlet mouth of said flue gas recovery channel is positioned at said feed bin lower end, and the venting port of said flue gas recovery channel is positioned at said feed bin top.
3. a kind of feed bin that aluminum oxide is carried out preheating according to claim 1 is characterized in that said flue gas recovery channel is an even number, lays respectively at the relative both sides of said feed bin axis.
4. according to each described a kind of feed bin that aluminum oxide is carried out preheating of claim 1 to 3, it is characterized in that, on the every said flue gas recovery channel at least one bend is set.
5. according to each described a kind of feed bin that aluminum oxide is carried out preheating of claim 1 to 3, it is characterized in that adjacent said flue gas recovery channel is provided with at least one tie point.
6. a kind of feed bin that aluminum oxide is carried out preheating according to claim 5 is characterized in that, the said flue gas recovery channel between two adjacent tie points is a tetragon.
7. according to each described a kind of feed bin that aluminum oxide is carried out preheating of claim 1 to 3, it is characterized in that said flue gas recovery channel is a volution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200356811U CN202543349U (en) | 2012-02-03 | 2012-02-03 | Bin for preheating aluminum oxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200356811U CN202543349U (en) | 2012-02-03 | 2012-02-03 | Bin for preheating aluminum oxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202543349U true CN202543349U (en) | 2012-11-21 |
Family
ID=47164013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200356811U Expired - Fee Related CN202543349U (en) | 2012-02-03 | 2012-02-03 | Bin for preheating aluminum oxide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202543349U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165527A (en) * | 2014-08-18 | 2014-11-26 | 营口东吉科技（集团）有限公司 | Method for preheating materials through smoke in fused magnesia |
| CN109055991A (en) * | 2018-08-20 | 2018-12-21 | 沈阳铝镁设计研究院有限公司 | A kind of electrolytic bath feed box structure using high-temperature flue gas preheating material |
| CN113122883A (en) * | 2021-03-18 | 2021-07-16 | 沈阳铝镁设计研究院有限公司 | Preheating method for aluminum oxide on upper part of aluminum electrolytic cell |
-
2012
- 2012-02-03 CN CN2012200356811U patent/CN202543349U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165527A (en) * | 2014-08-18 | 2014-11-26 | 营口东吉科技（集团）有限公司 | Method for preheating materials through smoke in fused magnesia |
| CN104165527B (en) * | 2014-08-18 | 2015-12-09 | 营口东吉科技（集团）有限公司 | A kind of storage equipment utilizing smoke pre-heating material in fused magnesite smelting process |
| CN109055991A (en) * | 2018-08-20 | 2018-12-21 | 沈阳铝镁设计研究院有限公司 | A kind of electrolytic bath feed box structure using high-temperature flue gas preheating material |
| CN113122883A (en) * | 2021-03-18 | 2021-07-16 | 沈阳铝镁设计研究院有限公司 | Preheating method for aluminum oxide on upper part of aluminum electrolytic cell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20121121 Termination date: 20170203 |