CN112978686A - Tunnel kiln aluminum ash secondary utilization device and method - Google Patents
Tunnel kiln aluminum ash secondary utilization device and method Download PDFInfo
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- CN112978686A CN112978686A CN202110163700.2A CN202110163700A CN112978686A CN 112978686 A CN112978686 A CN 112978686A CN 202110163700 A CN202110163700 A CN 202110163700A CN 112978686 A CN112978686 A CN 112978686A
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- aluminum ash
- tunnel kiln
- oblate
- aluminum
- utilization device
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/02—Preparation of nitrogen
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D3/00—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/42—Preparation of aluminium oxide or hydroxide from metallic aluminium, e.g. by oxidation
Abstract
The invention discloses a tunnel kiln aluminum ash secondary utilization device and method. The device and the method for secondary utilization of the aluminum ash in the tunnel kiln are characterized in that the secondary aluminum ash is added into a stirrer through the arrangement of a stirrer, a forming machine, the tunnel kiln and a turnover box, the binder is added into the stirrer, the secondary aluminum ash and the binder are stirred, the mixture is uniformly stirred and then enters a specific forming machine to be pressed into a oblate spheroid shape, the spheroidite shaped lump material is filled into the turnover box, the turnover box filled with the oblate shaped lump material is sent into the tunnel kiln, the oblate shaped lump material reacts with nitrogen oxide generated in the tunnel kiln in the sintering process according to the summarized temperature rise curve to generate nitrogen and water, the oblate shaped lump material is sintered into aluminum oxide, the aluminum oxide is utilized by refractory material units, the resources are effectively utilized, and the reduction, recycling and harmless principles of solid.
Description
Technical Field
The invention relates to the technical field of secondary utilization of aluminum ash, in particular to a device and a method for secondary utilization of aluminum ash in a tunnel kiln.
Background
According to incomplete statistics, the yield of aluminum ash in China is about 300 ten thousand tons per year, the aluminum ash contains abundant aluminum and aluminum oxide materials, the utilization value is very high, the aluminum ash comprises primary aluminum ash, secondary aluminum ash and tertiary aluminum ash according to the using times and the metal aluminum content of the aluminum ash in the recycling process, the main difference is that the contents of the aluminum and the aluminum oxide are different, the existing recycling process comprises a fried ash recycling method, a plasma fast melting method, a squeezing recycling method and the like, the recycling rate can reach more than 70 percent, and the secondary aluminum ash or the tertiary aluminum ash contains a certain amount of aluminum nitride and aluminum oxide which are easy to recycle, aluminum nitride and aluminum carbide active components, oxides of Si, Mg, Fe and the like, and chlorides of K, Na and the like; the active components such as aluminum nitride, aluminum carbide and the like can generate flammable and toxic gas when reacting with water, soluble salts can cause soil salinization and crop death, partial trace fluorides and heavy metals have leaching toxicity and can cause water pollution, secondary aluminum ash or tertiary aluminum ash has complex components and great processing difficulty, most enterprises adopt landfill or stockpiling for processing, the secondary aluminum ash is easy to cause serious secondary environmental pollution around the enterprises or the stockpiling places, and even causes peripheral vegetation and crops to be overgrown, so the secondary aluminum ash or the tertiary aluminum ash is subjected to harmless processing, the secondary aluminum ash or the tertiary aluminum ash not only meets the requirement of secondary recycling of aluminum resources, but also meets the inevitable requirements on environmental health development and economic sustainable development.
The aluminum ash is mainly derived from leftovers of electrolysis and casting workshops of an electrolytic aluminum plant, is also leftovers generated in the aluminum melting process of industries such as secondary aluminum manufacturers and other industries which need to melt and reprocess metal aluminum, and mainly comprises aluminum-containing waste gas which is formed by carrying a small amount of aluminum out along with hot gas flow under the high-temperature condition and mainly comprises a mixture of a metal aluminum simple substance, an oxide and a salt solvent, wherein the waste aluminum ash belongs to dangerous waste, the number of the dangerous waste is HW48, 321-containing 024-48, 321-containing 025-48 and 321-containing 026-48 in HW48, and the dangerous characteristics are toxicity and flammability and need to be reasonably disposed, so that the harm to the environment is reduced.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a tunnel kiln aluminum ash secondary utilization device and method, which have the advantages of effectively utilizing resources, realizing the principles of reduction, reclamation and harmlessness of solid wastes and the like, and solve the problem of harm to the environment.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a tunnel cave aluminium ash reutilization device and method, includes mixer, make-up machine, tunnel cave and turnover case, the lower surface swing joint of mixer has the pipe, the one end fixedly connected with discharging pipe of make-up machine, the fixed surface of pipe is connected with the sealing washer, the lower surface of turnover case is provided with the removal base, the inside wall fixedly connected with mount of mixer, the mid-mounting of mount has driving motor, the puddler is installed to driving motor's output, the controller is installed to one side of tunnel cave.
Preferably, one end of the guide pipe is inserted into the other end of the forming machine, and the sealing ring is arranged on the inner side wall of the forming machine.
Preferably, the output end of the driving motor penetrates through the fixing frame and is provided with a stirring rod.
Preferably, the surface of the forming machine is provided with a supporting seat, and the other end of the forming machine is movably connected with the stirring machine through the guide pipe.
Preferably, one side of the turnover box is fixedly connected with a side handle, and anti-slip strips are arranged on the surface of the turnover box.
Preferably, the top of tunnel cave installs the intake pipe, the connection pipe support is installed to one side of tunnel cave upper surface.
Preferably, the lower surface of the movable base is fixedly connected with an inner rod, and the surface of the inner rod is connected with a sliding rail in a sliding manner.
A tunnel kiln aluminum ash secondary utilization device and a method are characterized by comprising the following steps:
putting the secondary aluminum ash and the adhesive into a stirrer, starting a driving motor to drive a stirring rod to rotate, and stirring the secondary aluminum ash and the adhesive to fully contact and uniformly mix the secondary aluminum ash and the adhesive to obtain a uniform mixture;
the secondary aluminum ash and the adhesive which are evenly stirred enter a forming machine through a conduit to be extruded and agglomerated to be made into oblate block materials,
the oblate lump materials enter a turnover box through a discharge pipe;
the block material with the oblate spheroid is sent into a tunnel kiln through a movable base, and the sintering is carried out on the oblate spheroid block material by combining the summarized temperature rise curve;
during sintering, ammonia gas is generated by ammonia elements accompanied by secondary aluminum ash in the oblate block materials in contact with water in air, the ammonia gas reacts with nitrogen oxides generated in a tunnel kiln during sintering to generate nitrogen and water, the oblate block materials are sintered into aluminum oxide and are utilized by refractory units, and the chemical formula mainly existing in the process is as follows:
6HO+4NH3=5H2+6H2O；
8HO3+6NO2=7N2+12H2O。
(III) advantageous effects
Compared with the prior art, the invention provides a tunnel kiln aluminum ash secondary utilization device and method, which have the following beneficial effects:
the device and the method for recycling the aluminum ash in the tunnel kiln are characterized in that the secondary aluminum ash is added into a stirrer through the arrangement of a stirrer, a forming machine, the tunnel kiln and a turnover box, the binder is added into the stirrer, the secondary aluminum ash and the binder are stirred and uniformly stirred, then the mixture enters a specific forming machine to be pressed into a oblate spheroid shape, then the mixture is put into the turnover box, the turnover box filled with oblate spheroid block materials is sent into the tunnel kiln, according to the summarized temperature rise curve, the oblate spheroid block materials react with water vapor in the tunnel kiln and water in the air under the condition of high temperature to generate harmful gas, the harmful gas generated in the sintering process of the oblate spheroid block materials reacts with nitrogen oxide generated in the tunnel kiln in the sintering process to generate nitrogen gas and water, the oblate spheroid block materials are sintered into aluminum trioxide and are utilized by refractory material units to effectively utilize resources, the principles of reduction, resource utilization and harmlessness of solid wastes are realized.
Drawings
FIG. 1 is a schematic structural diagram of a tunnel kiln aluminum ash secondary utilization device and method according to the present invention;
FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1 according to the present invention;
fig. 3 is an enlarged schematic structural diagram of B in fig. 1 according to the present invention.
In the figure: 1. a blender; 2. a forming machine; 3. a tunnel kiln; 4. a turnover box; 5. a conduit; 6. a discharge pipe; 7. a seal ring; 8. moving the base; 9. a fixed mount; 10. a drive motor; 11. a stirring rod; 12. a supporting seat; 13. a side handle; 14. an air inlet pipe; 15. connecting the pipe frame; 16. an inner rod; 17. a slide rail; 18. and a controller.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, a tunnel kiln aluminum ash secondary utilization device and method includes a stirrer 1, a forming machine 2, a tunnel kiln 3 and a turnover box 4, wherein a guide pipe 5 is movably connected to the lower surface of the stirrer 1, a discharge pipe 6 is fixedly connected to one end of the forming machine 2, a seal ring 7 is fixedly connected to the surface of the guide pipe 5, a movable base 8 is arranged on the lower surface of the turnover box 4, a fixed frame 9 is fixedly connected to the inner side wall of the stirrer 1, a driving motor 10 is installed in the middle of the fixed frame 9, a stirring rod 11 is installed at the output end of the driving motor 10, a controller 18 is installed on one side of the tunnel kiln 3, one end of the guide pipe 5 is inserted into the other end of the forming machine 2, and a seal ring 7 is arranged on the inner side wall of the forming machine 2;
the output end of the driving motor 10 penetrates through the fixed frame 9 and is provided with a stirring rod 11, and through the arrangement of the stirring rod 11, the secondary aluminum ash can be stirred with the adhesive to ensure that the secondary aluminum ash is fully contacted with the adhesive and is uniformly mixed, the surface of the forming machine 2 is provided with a supporting seat 12, the other end of the forming machine 2 is movably connected with the stirring machine 1 through a guide pipe 5, one side of a turnover box 4 is fixedly connected with a side handle 13, through the arrangement of the side handles 13, the turnover box 4 is convenient for workers to take and use, the surface of the turnover box 4 is provided with the anti-skid strips, under the condition that the turnover box 4 is taken by a worker, the condition of hand slip can be reduced, an air inlet pipe 14 is installed at the top of the tunnel kiln 3, a connecting pipe frame 15 is installed on one side of the upper surface of the tunnel kiln 3, an inner rod 16 is fixedly connected to the lower surface of the movable base 8, and a slide rail 17 is connected to the surface of the inner rod 16 in a sliding manner.
A tunnel kiln aluminum ash secondary utilization device and a method are characterized by comprising the following steps:
s1: putting the secondary aluminum ash and the adhesive into a stirrer 1, starting a driving motor 10 to drive a stirring rod 11 to rotate, and stirring the secondary aluminum ash and the adhesive to ensure that the secondary aluminum ash and the adhesive are fully contacted and uniformly mixed to obtain a uniform mixture;
s2: the secondary aluminum ash and the adhesive which are evenly stirred enter a forming machine 2 through a conduit 5 for extrusion and agglomeration operation to prepare oblate lump materials,
s3: the oblate lump materials enter a turnover box 4 through a discharge pipe 6;
s4: the block material with the oblate spheroid is sent into the tunnel kiln 3 by the movable base 8, and the oblate spheroid block material is sintered by combining the summarized temperature rise curve;
s5: during sintering, ammonia gas is generated by ammonia elements accompanied by secondary aluminum ash in the oblate block materials in contact with water in air, the ammonia gas reacts with nitrogen oxides generated in the tunnel kiln 3 during sintering to generate nitrogen and water, the oblate block materials are sintered into aluminum oxide and are utilized by refractory units, and in the process, the chemical formula mainly exists as follows:
6HO+4NH3=5H2+6H2O；
8HO3+6NO2=7N2+12H2O。
the electrical components presented in the document are all electrically connected with an external master controller and 220V mains, and the master controller can be a conventional known device controlled by a computer or the like.
In summary, the device and the method for recycling tunnel kiln aluminum ash are characterized in that the secondary aluminum ash is added into a stirrer 1 through the arrangement of the stirrer 1, a forming machine 2, a tunnel kiln 3 and a turnover box 4, the binder is added into the stirrer 1, the secondary aluminum ash and the binder are stirred uniformly and then enter a specific forming machine 2 to be pressed into oblate spheroids, then the materials are put into the turnover box 4, the turnover box 4 filled with oblate spheroids is sent into the tunnel kiln 3, according to the summarized temperature rise curve, the oblate spheroids react with water vapor in the tunnel kiln 3 and moisture in the air under the condition of high temperature to generate harmful gas, the harmful gas generated in the sintering process of the oblate spheroids reacts with nitrogen oxides generated in the tunnel kiln in the sintering process to generate nitrogen and water, the oblate spheroids are sintered into aluminum oxide, is utilized by refractory units, effectively utilizes resources, and realizes the principles of reduction, reclamation and harmlessness of solid wastes.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the use of the verb "comprise a" to define an element does not exclude the presence of another, same element in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a tunnel cave aluminium ash reutilization device and method, includes mixer (1), make-up machine (2), tunnel cave (3) and turnover case (4), its characterized in that: the lower surface swing joint of mixer (1) has pipe (5), the one end fixedly connected with discharging pipe (6) of make-up machine (2), the fixed surface of pipe (5) is connected with sealing washer (7), the lower surface of turnover case (4) is provided with removes base (8), inside wall fixedly connected with mount (9) of mixer (1), the mid-mounting of mount (9) has driving motor (10), puddler (11) are installed to the output of driving motor (10), controller (18) are installed to one side of tunnel kiln (3).
2. The tunnel kiln aluminum ash secondary utilization device and method as claimed in claim 1, wherein: one end of the guide pipe (5) is connected with the other end of the forming machine (2) in an inserting mode, and the sealing ring (7) is arranged on the inner side wall of the forming machine (2).
3. The tunnel kiln aluminum ash secondary utilization device and method as claimed in claim 1, wherein: the output end of the driving motor (10) penetrates through the fixed frame (9) and is provided with a stirring rod (11).
4. The tunnel kiln aluminum ash secondary utilization device and method as claimed in claim 1, wherein: the surface of the forming machine (2) is provided with a supporting seat (12), and the other end of the forming machine (2) is movably connected with the stirrer (1) through the guide pipe (5).
5. The tunnel kiln aluminum ash secondary utilization device and method as claimed in claim 1, wherein: one side of the turnover box (4) is fixedly connected with a side handle (13), and anti-slip strips are arranged on the surface of the turnover box (4).
6. The tunnel kiln aluminum ash secondary utilization device and method as claimed in claim 1, wherein: intake pipe (14) are installed at the top of tunnel cave (3), connecting pipe support (15) are installed to one side of tunnel cave (3) upper surface.
7. The tunnel kiln aluminum ash secondary utilization device and method as claimed in claim 1, wherein: an inner rod (16) is fixedly connected to the lower surface of the movable base (8), and a sliding rail (17) is connected to the surface of the inner rod (16) in a sliding mode.
8. A tunnel kiln aluminum ash secondary utilization device and a method are characterized by comprising the following steps:
s1: putting the secondary aluminum ash and the adhesive into a stirrer (1), starting a driving motor (10) to drive a stirring rod (11) to rotate, and stirring the secondary aluminum ash and the adhesive to ensure that the secondary aluminum ash and the adhesive are fully contacted and uniformly mixed to obtain a uniform mixture;
s2: the secondary aluminum ash and the adhesive which are evenly stirred enter a forming machine (2) through a conduit (5) for extrusion and agglomeration operation to prepare oblate lump materials,
s3: the oblate lump materials enter a turnover box (4) through a discharge pipe (6);
s4: the block material with the oblate spheroid is sent into a tunnel kiln (3) through a movable base (8), and the oblate spheroid block material is sintered by combining the summarized temperature rise curve;
s5: the secondary aluminum ash in the oblate block generates ammonia gas in contact with water in the air during sintering, the ammonia gas reacts with nitrogen oxide generated in the tunnel kiln (3) during sintering to generate nitrogen gas and water, the oblate block is sintered into aluminum oxide which is utilized by refractory units, and the chemical formula mainly existing in the process is as follows:
6HO+4NH3=5H2+6H2O；
8HO3+6NO2=7N2+12H2O。
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113735611A (en) * | 2021-09-26 | 2021-12-03 | 北京科技大学 | Method for preparing low-shrinkage porous ceramic by high-temperature self-foaming of aluminum ash |
| CN115074548A (en) * | 2022-06-24 | 2022-09-20 | 湖州威能环境服务有限公司 | Secondary aluminum ash denitrification device |
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| JPH11199301A (en) * | 1998-01-13 | 1999-07-27 | Taiheiyo Cement Corp | Hydraulic cement composition |
| CN112076618A (en) * | 2020-09-17 | 2020-12-15 | 刘保成 | Denitration agent and method for desulfurization and denitration of refractory brick by using denitration agent |
| CN112077124A (en) * | 2020-09-15 | 2020-12-15 | 江苏海光金属有限公司 | Treatment method for harmless comprehensive utilization of secondary aluminum ash and preparation method thereof |
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2021
- 2021-02-05 CN CN202110163700.2A patent/CN112978686A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11199301A (en) * | 1998-01-13 | 1999-07-27 | Taiheiyo Cement Corp | Hydraulic cement composition |
| CN112077124A (en) * | 2020-09-15 | 2020-12-15 | 江苏海光金属有限公司 | Treatment method for harmless comprehensive utilization of secondary aluminum ash and preparation method thereof |
| CN112076618A (en) * | 2020-09-17 | 2020-12-15 | 刘保成 | Denitration agent and method for desulfurization and denitration of refractory brick by using denitration agent |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113735611A (en) * | 2021-09-26 | 2021-12-03 | 北京科技大学 | Method for preparing low-shrinkage porous ceramic by high-temperature self-foaming of aluminum ash |
| CN115074548A (en) * | 2022-06-24 | 2022-09-20 | 湖州威能环境服务有限公司 | Secondary aluminum ash denitrification device |
| CN115074548B (en) * | 2022-06-24 | 2023-05-30 | 湖州威能环境服务有限公司 | Secondary aluminum ash denitrification device |
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