CN204174259U - A kind of extracting through microwave heating zinc oxide production unit - Google Patents
A kind of extracting through microwave heating zinc oxide production unit Download PDFInfo
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- CN204174259U CN204174259U CN201420477952.8U CN201420477952U CN204174259U CN 204174259 U CN204174259 U CN 204174259U CN 201420477952 U CN201420477952 U CN 201420477952U CN 204174259 U CN204174259 U CN 204174259U
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- microwave heating
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- zinc oxide
- extracting
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
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Abstract
The utility model proposes a kind of extracting through microwave heating zinc oxide production unit, comprise the ball press, microwave heating installation, dust-settling compartment, heat exchanger, sack cleaner, induced draft fan and the control device that connect successively, ball press is connected by feeding device with microwave heating installation, all connected by air inducing pipeline between adjacent two equipment of microwave heating installation, dust-settling compartment, heat exchanger, sack cleaner and induced draft fan, control device is connected respectively with above-mentioned each equipment.By above-mentioned design, do not produce when extracting zinc oxide from steel ash any pollution, to heat up and cooling process carry out multistage accurately control and there is less investment, cost is low, technique is simple, flow process is short, efficiency advantages of higher.
Description
Technical field
The utility model relates to technical field of mechanical equipment, refers to a kind of by extracting through microwave heating zinc oxide production unit especially.
Background technology
Containing the ferric oxide of about 40% in the dedusting ash that steel mill produces, the carbon of 12%, remaining is primarily of compositions such as sodium, potassium, calcium, magnesium, silicon, zinc, chlorine and some rare metals.At present, main employing rotary kiln or the rotary hearth furnace of process Steel Plant dedusting ash reclaim the rare metals such as zinc oxide wherein, and rotary kiln has following weak point:
1. type of heating is the heating of additional coke powder, and calorific loss is large, and energy thermo-efficiency is low, and length consuming time, wastes energy, and needs in production process to consume a large amount of breeze, produces great amount of carbon dioxide, increases carbon emission amount.
2. rotary kiln chemical reaction process temperature province is difficult to control, and easily underburnt or overheated coking phenomenon occurs, unstable product quality.
3. rotary kiln produces the iron content tailings of 60-70% after extracting secondary zinc oxide, iron in this tailings also needs to increase recovery process, and after iron content tailings recovery part iron, still needs to discharge waste residue, also there is no effective control measures at present, cause secondary environmental pollution phenomenon.
4. rotary kiln reclaims zinc oxide from steel ash, must choose the steel ash of zinc content more than 5% and produce, and the raw material channel reclaiming zinc oxide is narrow, is not suitable for processing containing the low material of zinc.
5., because rotary kiln is in process of production easily by the sack cleaner of condensation vapor in retrieving arrangement that produce in producing, cause the abnormal situation of production run frequently to occur.
Rotary hearth furnace has following weak point:
1. rotary hearth furnace adopts heated by gas mode, and it is internally transmitted from material top layer by heat, and thermo-efficiency is low, wastes energy, and can produce great amount of carbon dioxide, causes greenhouse gases to discharge in a large number, affects environment.
2. rotary hearth furnace equipment is huge, invests too high, and because a large amount of coal gas of needs is as technique thermal source, so factory site must be selected to have the ability to provide Gas Resource region to found the factory, otherwise needs to increase gazogene, further increase front-end investment volume.
3. provide condition owing to needing to increase extra combustion gas for chemical reaction, rotary hearth furnace running cost is high.
Utility model content
The utility model proposes a kind of extracting through microwave heating zinc oxide production unit, solve the problem that above-mentioned background technology proposes.
The technical solution of the utility model is achieved in that
A kind of extracting through microwave heating zinc oxide production unit, comprise control device and the ball press connected successively, microwave heating installation, dust-settling compartment, heat exchanger, sack cleaner, induced draft fan, ball press is connected by feeding device with microwave heating installation, all connected by air inducing pipeline between adjacent two equipment of microwave heating installation, dust-settling compartment, heat exchanger, sack cleaner and induced draft fan, control device is connected respectively with above-mentioned each equipment.
As further technical scheme, microwave heating installation comprises:
Microwave tunnel kiln, microwave tunnel kiln is divided into successively by entrance dries warm area, reduction warm area, oxidation warm area and cooling warm area, and oxidation warm area is provided with gas blower, and the top of first three warm area of microwave tunnel kiln is provided with some microwave tubes;
Circular rails, the track section of circular rails is arranged in microwave tunnel kiln;
Locomotive group, is arranged in circular rails, and is connected with control device.
As further technical scheme, locomotive group comprises some joint moving-bed dollies, is connected between adjacent two moving-bed dollies by junctor; Hydraulic power unit, is connected with control device.
As further technical scheme, moving-bed dolly comprises:
Track vehicle frame, is arranged in circular rails;
Burner hearth, arranges on track vehicle frame, burner hearth both ends open, is made up of stainless steel plate casing and the thermal insulation fire-resistant layer be arranged in stainless steel plate casing.
As further technical scheme, moving-bed dolly is specially 50 joints.
As further technical scheme, four warm area length ranges of microwave tunnel kiln are 10 ~ 15 meters.
As further technical scheme, the cooling warm area of microwave tunnel kiln is connected with gas blower (103) and heat exchanger respectively by pipeline.
As further technical scheme, be provided with air inducing pipeline outside the reduction warm area of microwave tunnel kiln and oxidation warm area and be connected with dust-settling compartment.
As further technical scheme, control device is PLC.
As further technical scheme, microwave tube is 2M167B-M11 microwave tube.
Operation logic of the present utility model is as follows:
By ball press, steel ash is made the spheroid of diameter 5 ~ 30mm, and be all distributed into by spheroid in the burner hearth of moving-bed dolly, thickness is 30 ~ 60mm; Control locomotive group by control device to move in microwave tunnel kiln with the speed of 0.66 ~ 1.33 m/min, and the microwave tube controlling different warm area in microwave tunnel kiln is with different capacity work, temperature in four warm areas is reached respectively dry that warm area temperature is 500 ~ 600 DEG C, the temperature of reduction warm area is 1100 ~ 1200 DEG C, oxidation warm area temperature is 600 ~ 1200 DEG C, cooling warm area temperature is natural temperature, so make steel ash spheroid carry out successively under the high temperature conditions drying, reduction reaction and oxidizing reaction; When locomotive group moves in microwave tunnel kiln, by carrying out initial gross separation by what produce in reduction warm area and oxidation warm area containing zinc oxide dust gas introducing dust settling chamber under the attraction of induced draft fan, under the effect of dusty gas at induced draft fan that dust settling chamber is separated, enter heat exchanger, reclaim heat wherein, under the effect at induced draft fan of the dusty gas of heat exchange, enter sack cleaner, reclaim zinc oxide dust wherein; Transport after packaging; Locomotive group moves to microwave tunnel kiln cooling warm area, can also pass through gas blower accelerating cooling, obtain the spheroid containing reduced iron, sent by e Foerderanlage.
The beneficial effects of the utility model are:
1, the utility model carrys out direct heating material by microwave field in the dissipation of internal batch generation dielectric medium; belong to the body type of heating without thermograde; heat up rapidly, homogeneous heating, power consumption be low; in addition; microwave is a kind of clean energy, and itself does not produce any pollution, is conducive to environment protection; microwave heating is flexible, can realize Automated condtrol.
2, the utility model is by the control of PLC to microwave tube temperature in locomotive group travelling speed and microwave tunnel kiln processed, realize at Automated condtrol, and to heat up and the process of cooling is carried out multistage and accurately controlled, temperature-controlled precision is less than positive and negative 1 degree, steel ash can be made fully to react under standard temperature, avoid and underburnt or overheated coking phenomenon occur.
The advantages such as 3, the utility model has less investment, cost is low, technique is simple, flow process is short, efficiency is high, energy consumption is low, three-waste free discharge.
4, Zn, In, Sn etc. can not only be reclaimed for the harmful metal of steel mill from steel ash by the utility model, and can turn waste into wealth, reclaim rare noble metal, reduced irons a large amount of in steel ash can also be reclaimed for steel mill simultaneously, return the raw material of steel mill as ironmaking, overcome rotary kiln only pay close attention to the recovery of zinc oxide and have ignored the recovery of iron, cause the loss of iron in waste residue, avoid the waste of iron resources.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is the utility model structure operation frame structural representation;
Fig. 2 is microwave heating installation structural representation in the utility model;
Fig. 3 is moving-bed vehicle structure schematic diagram in the utility model;
Fig. 4 is adjacent two moving-bed dolly syndeton schematic diagram in the utility model.
In figure: 1, ball press; 2, induced draft fan; 31, warm area is dried; 32, reduction warm area; 33, warm area is oxidized; 34, warm area is cooled; 4, circular rails; 5, moving-bed dolly; 51, track vehicle frame; 52, burner hearth; 53, junctor; 6, dust-settling compartment; 7, heat exchanger; 8, sack cleaner; 9, control device; 101, feeding device; 102, e Foerderanlage; 103, gas blower; 104, spheroid.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1 to 4, a kind of extracting through microwave heating zinc oxide production unit that the utility model proposes, comprise control device 9 and the ball press 1 connected successively, microwave heating installation, dust-settling compartment 6, heat exchanger 7, sack cleaner 8, induced draft fan 2, ball press 1 is connected by feeding device 101 with microwave heating installation, all connected by air inducing pipeline between adjacent two equipment of microwave heating installation, dust-settling compartment 6, heat exchanger 7, sack cleaner 8 and induced draft fan 2, control device 9 is connected respectively with above-mentioned each equipment.
As shown in Figure 2, as further technical scheme, microwave heating installation comprises:
Microwave tunnel kiln, microwave tunnel kiln is divided into successively by entrance dries warm area 31, reduction warm area 32, oxidation warm area 33 and cooling warm area 34, oxidation warm area 33 is provided with gas blower 103, and the top of first three warm area of microwave tunnel kiln is provided with some microwave tube (not shown);
Circular rails 4, the track section of circular rails 4 is arranged in microwave tunnel kiln;
Locomotive group, is arranged in circular rails 4, and is connected with control device 9.
As further technical scheme, locomotive group comprises some joint moving-bed dollies 5, is connected between adjacent two moving-bed dollies 5 by junctor 53; Hydraulic power unit, is connected with control device 9.
If Fig. 3 ~ Fig. 4 is as further technical scheme, moving-bed dolly 5 comprises:
Track vehicle frame 51, is arranged in circular rails 4;
Burner hearth 52, arranges on track vehicle frame 51, burner hearth 52 both ends open, is made up of stainless steel plate casing and the thermal insulation fire-resistant layer be arranged in stainless steel plate casing.
As further technical scheme, moving-bed dolly 5 is specially 50 joints.
In the utility model, the circular rails 4 that microwave heating installation is arranged can make production form streamlined production model, can greatly enhance productivity; In locomotive group, moving-bed dolly 5 can arrange more piece according to the length of circular rails 4 and microwave tunnel kiln, and the technical program is set to 50 joints by scientific algorithm, can utilize space fully and enhance productivity; Moving-bed dolly 5 structure design and steel ash spheroid 104 uniform thickness in moving-bed dolly 5 are by designed by scientific algorithm, not only ensure burner hearth 52 temperature under microwave tube controls, the work-ing life of moving-bed dolly 5 can also be ensured, wherein, burner hearth 52 inside holding flame retardant coating is specially refractory brick, in addition, for convenient, fast when guarantee material loading and discharging, burner hearth 52 length preferably one meter.
As further technical scheme, four warm area length ranges of microwave tunnel kiln are 10 ~ 15 meters.
As further technical scheme, the cooling warm area 34 of microwave tunnel kiln is connected with gas blower 103 and heat exchanger 7 respectively by pipeline.
In the utility model, the cooling warm area 34 of microwave tunnel kiln is also connected with gas blower 103 and heat exchanger 7 respectively by pipeline, gas blower 103 not only can be utilized to reach the object cooling fast and enhance productivity, the heat recuperation of distributing when spheroid 104 can also be cooled, reduces power consumption, increases operation rate.
As further technical scheme, be provided with air inducing pipeline outside the reduction warm area 32 of microwave tunnel kiln and oxidation warm area 33 and be connected with dust-settling compartment 6.
As further technical scheme, control device 9 is PLC.
As further technical scheme, microwave tube is 2M167B-M11 microwave tube.
Being heated to be heat in microwave tunnel kiln in operational process, for improving microwave tube work-ing life and control performance thereof, avoiding affecting production efficiency, the utility model preferred Panasonic 2M167B-M11 microwave tube because changing microwave tube.
The method that can realize extracting from ironmaking dedusting ash zinc oxide by the utility model is as follows:
1), by the steel ash containing elements such as Fe, Zn, In be pressed into spheroplast, spheroid 104 is of a size of
2), by spheroid 104 all be distributed in tunnel furnace, and be all distributed in the burner hearth 52 of moving-bed dolly 5 by feeding device 101 by spheroid 104, thickness is 30 ~ 60mm.
3), spheroid 104 in microwave tunnel kiln drying and reaction, be first the free water content of drying in spheroid 104, to avoid producing condensation vapor in reaction process, cause production run abnormal, bake out temperature is heated to 500 ~ 600 DEG C from normal temperature; Next utilizes the reductive agent-carbon in spheroid 104 to carry out reduction reaction, and the temperature of reduction warm area 32 is 1100 ~ 1200 DEG C; Again for above-mentioned reduzate is under temperature is 600 ~ 1200 DEG C of conditions, pass into oxygen-rich air and carry out oxidizing reaction.
4) high temperature, after reduction reaction and oxidizing reaction, containing zinc oxide dust gas, enters dust settling chamber and carries out initial gross separation under the attraction of induced draft fan 2; The dusty gas be separated through dust settling chamber, under the effect of induced draft fan 2, enters heat exchanger 7, reclaims heat wherein; Through the dusty gas of heat exchange under the effect of induced draft fan 2, enter sack cleaner 8, reclaim zinc oxide dust wherein; Transport after packaging.
5) spheroid 104 cooling, after oxidation obtains the spheroid 104 containing reduced iron, and the raw material that can be used as Steel Plant is sent by e Foerderanlage 102.
In aforesaid method, spheroid 104 is in microwave tunnel kiln drying and reaction process, locomotive group translational speed in microwave tunnel kiln is 0.66 ~ 1.33 m/min, to ensure that spheroid 104 is fully dried and reacts, with the normal operation ensureing that in steel ash, rare noble metal all reclaims and produces.
Any pollution is not produced, to heat up and the process of cooling is carried out multistage and accurately controlled and have have that less investment, cost are low, technique is simple, flow process is short, efficiency is high does advantage when extracting zinc oxide by the utility model from steel ash, pass through predesigne, save energy aspect, its technical ability effect is approximately 30% ~ 50%, from production equipment investing, compared with investing with equal industrial scale rotary hearth furnace, economize on the use of funds 60% ~ 70%.
These are only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. an extracting through microwave heating zinc oxide production unit, it is characterized in that, the ball press (1) comprising control device (9) and connect successively, microwave heating installation, dust-settling compartment (6), heat exchanger (7), sack cleaner (8), induced draft fan (2), described ball press (1) is connected by feeding device (101) with described microwave heating installation, described microwave heating installation, described dust-settling compartment (6), described heat exchanger (7), all connected by air inducing pipeline between described sack cleaner (8) and adjacent two equipment of described induced draft fan (2), control device (9) is connected respectively with above-mentioned each equipment.
2. extracting through microwave heating zinc oxide production unit as claimed in claim 1, it is characterized in that, described microwave heating installation comprises:
Microwave tunnel kiln, described microwave tunnel kiln is divided into successively by entrance dries warm area (31), reduction warm area (32), oxidation warm area (33) and cooling warm area (34), described oxidation warm area (33) is provided with gas blower (103), and the top of described first three warm area of microwave tunnel kiln is provided with some microwave tubes;
Circular rails (4), the track section of described circular rails (4) is arranged in described microwave tunnel kiln;
Locomotive group, is arranged in described circular rails (4), and is connected with described control device (9).
3. extracting through microwave heating zinc oxide production unit as claimed in claim 2, it is characterized in that, described locomotive group comprises some joint moving-bed dollies (5), is connected between adjacent two described moving-bed dollies (5) by junctor (53); Hydraulic power unit, is connected with described control device (9).
4. extracting through microwave heating zinc oxide production unit as claimed in claim 3, it is characterized in that, described moving-bed dolly (5) comprising:
Track vehicle frame (51), is arranged in described circular rails (4);
Burner hearth (52), arranges on described track vehicle frame (51), described burner hearth (52) both ends open, is made up of stainless steel plate casing and the thermal insulation fire-resistant layer be arranged in described stainless steel plate casing.
5. the extracting through microwave heating zinc oxide production unit as described in claim 3 or 4, is characterized in that, described moving-bed dolly (5) is specially 50 joints.
6. extracting through microwave heating zinc oxide production unit as claimed in claim 2, it is characterized in that, four warm area length ranges of described microwave tunnel kiln are 10 ~ 15 meters.
7. extracting through microwave heating zinc oxide production unit as claimed in claim 2, it is characterized in that, the cooling warm area (34) of described microwave tunnel kiln is connected with described gas blower (103) and heat exchanger (7) respectively by pipeline.
8. extracting through microwave heating zinc oxide production unit as claimed in claim 2, it is characterized in that, be provided with air inducing pipeline outside the reduction warm area (32) of described microwave tunnel kiln and oxidation warm area (33) and be connected with described dust-settling compartment (6).
9. extracting through microwave heating zinc oxide production unit as claimed in claim 1, it is characterized in that, described control device (9) is PLC.
10. extracting through microwave heating zinc oxide production unit as claimed in claim 2, it is characterized in that, described microwave tube is 2M167B-M11 microwave tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420477952.8U CN204174259U (en) | 2014-08-22 | 2014-08-22 | A kind of extracting through microwave heating zinc oxide production unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420477952.8U CN204174259U (en) | 2014-08-22 | 2014-08-22 | A kind of extracting through microwave heating zinc oxide production unit |
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| Publication Number | Publication Date |
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| CN204174259U true CN204174259U (en) | 2015-02-25 |
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| CN201420477952.8U Expired - Fee Related CN204174259U (en) | 2014-08-22 | 2014-08-22 | A kind of extracting through microwave heating zinc oxide production unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108796235A (en) * | 2018-08-27 | 2018-11-13 | 北京科技大学 | A kind of production equipment of the production of microwave tunnel kiln nano zinc oxide powder and superfine iron powder |
-
2014
- 2014-08-22 CN CN201420477952.8U patent/CN204174259U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108796235A (en) * | 2018-08-27 | 2018-11-13 | 北京科技大学 | A kind of production equipment of the production of microwave tunnel kiln nano zinc oxide powder and superfine iron powder |
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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: 20150225 Termination date: 20170822 |