CN106222427A - A kind of aluminum-extracted pulverized fuel ash device - Google Patents
A kind of aluminum-extracted pulverized fuel ash device Download PDFInfo
- Publication number
- CN106222427A CN106222427A CN201610796136.7A CN201610796136A CN106222427A CN 106222427 A CN106222427 A CN 106222427A CN 201610796136 A CN201610796136 A CN 201610796136A CN 106222427 A CN106222427 A CN 106222427A
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- China
- Prior art keywords
- reactor
- valve
- aluminum
- leaching
- pulverized fuel
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Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/02—Working-up flue dust
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B21/00—Obtaining aluminium
- C22B21/0015—Obtaining aluminium by wet processes
- C22B21/0023—Obtaining aluminium by wet processes from waste materials
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/006—Wet processes
-
- 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
- Y02P10/20—Recycling
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of aluminum-extracted pulverized fuel ash device, including roasting system and leaching system；Described roasting system includes the reactor being provided with heater, it is provided with by motor-driven stirring apparatus for reaction kettle in reactor, the feeding mouth of the top of reactor connects ammonium sulfate metering feeding device and flyash metering feeding device, and reactor top offers NH3Outlet and storage inside have the NH of water3Absorption plant is connected；Described leaching system includes the leaching pond accepting blow-off valve ejection, and sedimentation tank is connected across filter with leaching pond；Leaching pond agitating device, sedimentation tank and NH it is provided with in leaching pond3The ammonia outlet of absorption plant is connected.The present invention have feed intake conveniently, reaction environment is good, it is bonding to be difficult to, production efficiency is high, operational reliability good, the response time is controlled, easy to clean, be easy to the advantages such as observation.
Description
Technical field
The invention belongs to flyash kish extractive technique field, relate to a kind of aluminum-extracted pulverized fuel ash device.
Background technology
Flyash is the solid waste that coal-burning boiler is discharged with flue gas, and it is that coal impurity when high-temp combustion melts, warp
The glassy solids microgranule crossing quenching and formed.Flyash main chemical compositions is Al2O3 and SiO2, both sums reach 80% with
On.Comprehensive utilization flyash, extracts aluminium oxide, is the high value added utilization of a kind of secondary resource.The research at present the most from
Theory and experimentation, turn to pilot scale and industrial test research, but the technology path that can be used for industrialized production have the most very much
Limit.
Alkali roasting method is simple because of technique, makes some progress in industrial applications, but because its intrinsic defect causes
Whole technique is made to have jejune or uneconomic place to produce hard to carry on；Acidleach is followed the example of because it is to equipment corrosion resistant
Requiring height, cost of investment is huge, is constantly in the theoretical and research of laboratory stage, and the road of industrialization is the veryest long；And it is anti-
Ammonium sulfate method relatively mild, that the quantity of slag can also obtain control should also be not carried out industrialized production, mainly this technique is always
Ammonium sulfate and flyash baking mixed generation aluminum sulfate or the highest problem of Burnt ammonium alum production rate cannot be solved: ammonium sulfate, sulphuric acid
The fusing point of aluminum ammonium is relatively low, quickly forms molten condition, and ammonium sulfate the most easily decomposes in course of reaction, will be unable to and powder after decomposition
In coal ash, Al2O3 reacts, and the extraction ratio causing Al2O3 is the highest.Therefore, how ammonium sulfate and fine coal can preferably be solved
Ash roasting problem, is only the key on the road of ammonium sulfate method industrialization.
Roasting technique (such as fluiddized-bed roasting method, continuous tunnel furnace roasting method etc.) result of study table to ammonium sulfate Yu flyash
Bright: to use fluosolids roasting to be conducive to material heat transfer uniformly, react faster, but under the conditions of testing stand, material enters 5 points of burner hearth
Zhong Hou, is all ground by inert media, and material bottom time of staying in stove is shorter, it is impossible to meets the requirement of roasting time, enters
And cause extraction ratio relatively low；Use continuous tunnel furnace roasting, although extraction ratio is higher, but still cannot solve the bonding problem of material completely.
Summary of the invention
Present invention solves the problem in that a kind of aluminum-extracted pulverized fuel ash device of offer, this device has the convenience that feeds intake, reaction ring
Border is good, it is bonding to be difficult to, production efficiency is high advantage.
The present invention is to be achieved through the following technical solutions:
A kind of aluminum-extracted pulverized fuel ash device, including roasting system and leaching system；Described roasting system includes being provided with heating
The reactor of device, is provided with by motor-driven stirring apparatus for reaction kettle in reactor, the feeding mouth of the top of reactor connects
Having ammonium sulfate metering feeding device and flyash metering feeding device, reactor top offers NH3Outlet has with storage inside
The NH of water3Absorption plant is connected；NH3The top of absorption plant adjusts valve to be connected with air-introduced machine also by air-introduced machine entrance, bottom
It is provided with ammonia outlet；Reactor bottom side offers blow-off valve, is provided with high speed agitator on the side of blow-off valve entrance,
Opposite side offers blowdown apparatus；
Described leaching system includes the leaching pond accepting blow-off valve ejection, and sedimentation tank and leaching pond are across filter phase
Connection；Leaching pond agitating device, sedimentation tank and NH it is provided with in leaching pond3The ammonia outlet of absorption plant is connected.
Described reactor includes cylinder, is outwards sequentially provided with zone of heating, heat-insulation layer from cylinder inboard wall.
The stirring main body of described stirring apparatus for reaction kettle is tubular, is provided with ripple or projection on the surface of stirring main body.
Described reactor is provided with relief valve and Pressure gauge at top, the relative aerating device and clear of being provided with in both sides, top
Reason valve；In reactor, it is additionally provided with temperature measuring equipment, sidewall is additionally provided with peeping device.
Described NH3Absorption plant and the NH on reactor top3It is provided with anti-blocking valve and air bleeding valve, this pipe on the pipeline of outlet
Road is simultaneously as inlet pipeline.
Described high speed agitator arranged off-centre bottom reactor.
Described ammonium sulfate metering feeding device, flyash metering feeding device pass through feed opening, by flyash and ammonium sulfate
Send in reactor in the ratio set.
Described blowdown apparatus uses push-pull valve；Described filter is can double-deck changeable layout.
The opening and closing gap periods of described blow-off valve is the material in reactor response time.
The flyash stored in described fine coal ash silo, ammonium sulfate storehouse and ammonium sulfate, filled by flyash metering feed respectively
Put and send in reactor in setting ratio with ammonium sulfate metering feeding device；After material is sent in reactor, by the reaction of surrounding
Material heats, and thermal source is provided by the heater of reactor；Reaction mass, under the disturbance of stirring apparatus for reaction kettle, incorporates reaction
In the reaction mass maintained in still；Material through the reaction of certain time, then passes through the row of reactor bottom in reactor
Material valve drains into leaching pond, and the response time is controlled by blow-off valve；After reaction mass is delivered to leach pond, at leaching pond stirring dress
Under the stirring action put, the metal ion in material dissolves and enters sedimentation tank by filter；Material reacts in reactor
During produce NH3By NH3Absorption plant carries out absorption and makes ammonia, and the sedimentation tank delivering to leaching system carries out metal unit
Element extraction and application.
Compared with prior art, the present invention has a following useful technique effect:
The aluminum-extracted pulverized fuel ash device that the present invention provides, uses ammonium sulfate, flyash metering feeding device, feeds intake conveniently；Adopt
Using tubular agitating device, there are ripple or projection in surface, and this arranges can reduce material reaction boundary layer thickness, simultaneously bottom cloth set high
Speed agitator, material reaction environment is good；Can simultaneously charging and discharging, the response time is controlled, and production efficiency is high；Without complex appts, system
Simply, operational reliability is good.
The aluminum-extracted pulverized fuel ash device that the present invention provides, by controlling the response time, makes mixed material pass through in liquid condition
Blow-off valve enters leaching system, and material is difficult to bonding；Arranging clearing valve, blowdown apparatus, blowdown apparatus uses push-pull valve, facilitates thing
Material is dredged, and end reaction material is discharged from bottom after being dissolved in water, reactor easy to clean；Peeping device arranged by reactor, it is simple to see
Survey.
The aluminum-extracted pulverized fuel ash device that the present invention provides, have feed intake conveniently, reaction environment is good, be difficult to bonding, production efficiency
High, operational reliability is good, the response time is controlled, easy to clean, be easy to the advantages such as observation.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Wherein, 1, blowdown apparatus, 2, temperature measuring equipment, 3, stirring apparatus for reaction kettle, 4, reactor, 5, aerating device,
6, feed opening, 7, ammonium sulfate metering feeding device, 8, flyash metering feeding device, 9, fine coal ash silo, 10, ammonium sulfate storehouse, 11,
Relief valve, 12, Pressure gauge, 13, anti-blocking valve, 14, air bleeding valve, 15, clearing valve, 16, peeping device, 17, air-introduced machine entrance adjust valve,
18, air-introduced machine, 19, NH3Absorption plant, 20, leaching pond agitating device, 21, sedimentation tank, 22, filter, 23, leaching pond, 24,
Blow-off valve, 25, high speed agitator.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in further detail, described in be explanation of the invention and
It not to limit.
As it is shown in figure 1, a kind of aluminum-extracted pulverized fuel ash device, including roasting system and leaching system；Described roasting system bag
Include the reactor 4 being provided with heater, be provided with by motor-driven stirring apparatus for reaction kettle 3 in reactor 4, reactor 4 upper
The feeding mouth of side connects has ammonium sulfate metering feeding device 7 and flyash metering feeding device 8, reactor 4 top to offer NH3
Outlet and storage inside have the NH of water3Absorption plant 19 is connected；NH3The top of absorption plant 19 is adjusted also by air-introduced machine entrance
Valve 17 is connected with air-introduced machine 18, and bottom is provided with ammonia outlet；Reactor 4 bottom side offers blow-off valve 24, at discharge
The side of valve 24 entrance is provided with high speed agitator 25, offers blowdown apparatus 1 at opposite side；
Described leaching system includes the leaching pond 23 accepting blow-off valve 24 ejection, sedimentation tank 21 and leaching pond 23 across
Filter 22 is connected；Leaching pond agitating device 20, sedimentation tank 21 and NH it is provided with in leaching pond 233The ammonia of absorption plant 19
Outlet is connected.
Concrete, described reactor 4 includes cylinder, is outwards sequentially provided with zone of heating, heat-insulation layer from cylinder inboard wall.
The stirring main body of described stirring apparatus for reaction kettle 3 is tubular, is provided with ripple or projection on the surface of stirring main body.
Further, described reactor 4 is provided with relief valve 11 and Pressure gauge 12 at top, in relative the setting in both sides, top
There are aerating device 5 and clearing valve 15；In reactor 4, it is additionally provided with temperature measuring equipment 2, sidewall is additionally provided with peeping device
16。
Described NH3Absorption plant 19 and the NH on reactor 4 top3It is provided with anti-blocking valve 13 and air bleeding valve on the pipeline of outlet
14, this pipeline is simultaneously as inlet pipeline.
Described high speed agitator 25 arranged off-centre bottom reactor 4.
Described ammonium sulfate metering feeding device 7, flyash metering feeding device 8 are by feed opening 6, by flyash and sulphuric acid
Ammonium is sent in reactor 4 in the ratio set.
Concrete, described blowdown apparatus 1 uses push-pull valve；Described filter 22 is can double-deck changeable layout.
The opening and closing gap periods of described blow-off valve 24 is the material reaction time in reactor 4.
React the most as follows to refine at the material entering reactor: be stored in fine coal ash silo 9, ammonium sulfate
The flyash in storehouse 10 and ammonium sulfate press a definite proportion by flyash metering feeding device 8 and ammonium sulfate metering feeding device 7 respectively
Example is sent in reactor.After material is sent in reactor, being heated by the reaction mass of surrounding immediately, thermal source is by reactor body week
The heater that cloth is put provides；Reaction mass, under the disturbance of stirring apparatus for reaction kettle 3, maintains in incorporating rapidly reactor
In reaction mass；Material through the reaction of certain time, is then drained into by the blow-off valve 24 of reactor bottom in reactor
Leaching pond 23, the response time can be controlled by blow-off valve 24；Reaction environment good in reactor is by reactor stirring dress
Put 3, high speed agitator 25 realizes；After reaction mass is delivered to leach pond, under the stirring action of leaching pond agitating device 20, thing
Metal ion in material dissolves rapidly and passes through filter 22 and enters sedimentation tank 21；The NH produced in course of reaction3By NH3Absorb
Device 19 carries out absorbing to be made ammonia and delivers to the sedimentation tank 21 of leaching system and carry out metallic element extraction and application.Thus, this
Bright have feed intake conveniently, reaction environment is good, it is bonding to be difficult to, production efficiency is high, operational reliability good, the response time is controlled, Yi Qing
Manage, be easy to the advantages such as observation.
Example given above is to realize the present invention preferably example, the invention is not restricted to above-described embodiment.This area
Technical staff made according to the technical characteristic of technical solution of the present invention any nonessential interpolation, replacement, belong to this
The protection domain of invention.
Claims (10)
1. an aluminum-extracted pulverized fuel ash device, it is characterised in that include roasting system and leaching system；Described roasting system includes
It is provided with the reactor (4) of heater, is provided with by motor-driven stirring apparatus for reaction kettle (3), reactor in reactor (4)
(4) feeding mouth of top connects ammonium sulfate metering feeding device (7) and flyash metering feeding device (8), reactor (4)
Top offers NH3Outlet and storage inside have the NH of water3Absorption plant (19) is connected；NH3The top of absorption plant (19) is also
Adjusting valve (17) to be connected with air-introduced machine (18) by air-introduced machine entrance, bottom is provided with ammonia outlet；Reactor (4) bottom side
Offer blow-off valve (24), be provided with high speed agitator (25) on the side of blow-off valve (24) entrance, offer blowdown at opposite side
Device (1)；
Described leaching system includes the leaching pond (23) accepting blow-off valve (24) ejection, sedimentation tank (21) and leaching pond (23)
It is connected across filter (22)；Leaching pond agitating device (20), sedimentation tank (21) and NH it is provided with in leaching pond (23)3Absorb
The ammonia outlet of device (19) is connected.
2. aluminum-extracted pulverized fuel ash device as claimed in claim 1, it is characterised in that described reactor (4) includes cylinder, from cylinder
Internal wall is outwards sequentially provided with zone of heating, heat-insulation layer.
3. aluminum-extracted pulverized fuel ash device as claimed in claim 1, it is characterised in that the stirring of described stirring apparatus for reaction kettle (3)
Main body is tubular, is provided with ripple or projection on the surface of stirring main body.
4. aluminum-extracted pulverized fuel ash device as claimed in claim 1, it is characterised in that described reactor (4) is provided with peace at top
Full valve (11) and Pressure gauge (12), relative in both sides, top be provided with aerating device (5) and clearing valve (15)；In reactor (4)
Inside it is additionally provided with temperature measuring equipment (2), sidewall is additionally provided with peeping device (16).
5. aluminum-extracted pulverized fuel ash device as claimed in claim 1, it is characterised in that described NH3Absorption plant (19) and reactor
(4) NH on top3Being provided with anti-blocking valve (13) and air bleeding valve (14) on the pipeline of outlet, this pipeline is simultaneously as inlet pipeline.
6. aluminum-extracted pulverized fuel ash device as claimed in claim 1, it is characterised in that described high speed agitator (25) is at reactor
(4) bottom arranged off-centre.
7. aluminum-extracted pulverized fuel ash device as claimed in claim 1, it is characterised in that described ammonium sulfate metering feeding device (7), powder
Coal ash metering feeding device (8) passes through feed opening (6), flyash and ammonium sulfate is sent in reactor (4) in the ratio set.
8. aluminum-extracted pulverized fuel ash device as claimed in claim 1, it is characterised in that described blowdown apparatus (1) uses push-pull valve；Institute
Stating filter (22) is can double-deck changeable layout.
9. aluminum-extracted pulverized fuel ash device as claimed in claim 1, it is characterised in that between the opening and closing of described blow-off valve (24) every other week
Phase is reactor (4) the interior material reaction time.
10. aluminum-extracted pulverized fuel ash device as claimed in claim 1, it is characterised in that described fine coal ash silo (9), ammonium sulfate storehouse
(10) flyash stored in and ammonium sulfate, respectively by flyash metering feeding device (8) and ammonium sulfate metering feeding device
(7) send in reactor in setting ratio；After material is sent in reactor, being heated by the reaction mass of surrounding, thermal source is by reacting
The heater of still (4) provides；Reaction mass is under the disturbance of stirring apparatus for reaction kettle (3), and maintain in incorporating reactor is anti-
Answer in material；Material through the reaction of certain time, is then drained into by the blow-off valve (24) of reactor bottom in reactor
Leaching pond (23), the response time is controlled by blow-off valve (24)；After reaction mass is delivered to leach pond, at leaching pond stirring dress
Putting under the stirring action of (20), the metal ion in material dissolves and passes through filter (22) and enters sedimentation tank (21)；Material exists
The NH produced in course of reaction in reactor3By NH3Absorption plant (19) carries out absorption and makes ammonia, and delivers to leaching system
Sedimentation tank (21) carries out metallic element extraction and application.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610796136.7A CN106222427A (en) | 2016-08-31 | 2016-08-31 | A kind of aluminum-extracted pulverized fuel ash device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610796136.7A CN106222427A (en) | 2016-08-31 | 2016-08-31 | A kind of aluminum-extracted pulverized fuel ash device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106222427A true CN106222427A (en) | 2016-12-14 |
Family
ID=58074102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610796136.7A Pending CN106222427A (en) | 2016-08-31 | 2016-08-31 | A kind of aluminum-extracted pulverized fuel ash device |
Country Status (1)
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| CN (1) | CN106222427A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115141929A (en) * | 2022-07-15 | 2022-10-04 | 山东海林环保设备工程有限公司 | Comprehensive metal extraction device for coal gangue and coal ash |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103771464A (en) * | 2012-10-18 | 2014-05-07 | 沈阳铝镁设计研究院有限公司 | Fly ash clinker sintering apparatus |
| CN105274347A (en) * | 2015-11-10 | 2016-01-27 | 中国华能集团清洁能源技术研究院有限公司 | Anti-sticking system and method for extracting aluminum from pulverized coal ash through ammonium sulfate method |
| CN206069967U (en) * | 2016-08-31 | 2017-04-05 | 中国华能集团清洁能源技术研究院有限公司 | A kind of aluminum-extracted pulverized fuel ash device |
-
2016
- 2016-08-31 CN CN201610796136.7A patent/CN106222427A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103771464A (en) * | 2012-10-18 | 2014-05-07 | 沈阳铝镁设计研究院有限公司 | Fly ash clinker sintering apparatus |
| CN105274347A (en) * | 2015-11-10 | 2016-01-27 | 中国华能集团清洁能源技术研究院有限公司 | Anti-sticking system and method for extracting aluminum from pulverized coal ash through ammonium sulfate method |
| CN206069967U (en) * | 2016-08-31 | 2017-04-05 | 中国华能集团清洁能源技术研究院有限公司 | A kind of aluminum-extracted pulverized fuel ash device |
Non-Patent Citations (1)
| Title |
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| 张世鑫等: ""热反应釜用于硫酸铵法粉煤灰提铝的可行性分析"", 《洁净煤技术》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115141929A (en) * | 2022-07-15 | 2022-10-04 | 山东海林环保设备工程有限公司 | Comprehensive metal extraction device for coal gangue and coal ash |
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Application publication date: 20161214 |