CN219850150U - Spray type foam flotation device for treating electrolytic aluminum carbon residues - Google Patents
Spray type foam flotation device for treating electrolytic aluminum carbon residues Download PDFInfo
- Publication number
- CN219850150U CN219850150U CN202321212102.0U CN202321212102U CN219850150U CN 219850150 U CN219850150 U CN 219850150U CN 202321212102 U CN202321212102 U CN 202321212102U CN 219850150 U CN219850150 U CN 219850150U
- Authority
- CN
- China
- Prior art keywords
- ejector
- froth flotation
- electrolytic aluminum
- foam
- flotation column
- 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.)
- Active
Links
- 238000005188 flotation Methods 0.000 title claims abstract description 40
- 239000006260 foam Substances 0.000 title claims abstract description 30
- RQMIWLMVTCKXAQ-UHFFFAOYSA-N [AlH3].[C] Chemical group [AlH3].[C] RQMIWLMVTCKXAQ-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 239000007921 spray Substances 0.000 title claims description 5
- 238000009291 froth flotation Methods 0.000 claims abstract description 36
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000002002 slurry Substances 0.000 claims abstract description 27
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 239000002893 slag Substances 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 3
- 230000008676 import Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000011268 mixed slurry Substances 0.000 description 13
- 239000003792 electrolyte Substances 0.000 description 10
- 229910052799 carbon Inorganic materials 0.000 description 9
- 239000002245 particle Substances 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000008602 contraction Effects 0.000 description 2
- 229910001610 cryolite Inorganic materials 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 150000004673 fluoride salts Chemical class 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 235000013024 sodium fluoride Nutrition 0.000 description 1
- 239000011775 sodium fluoride Substances 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
Abstract
The utility model relates to the technical field of flotation devices, in particular to a jet type foam flotation device for treating electrolytic aluminum carbon residues, which comprises a foam flotation column and an ejector, wherein a feed inlet, a discharge outlet and a circulating discharge outlet are formed in the wall of the foam flotation column; the ejector comprises a first-stage ejector and a second-stage ejector, and the first-stage ejector and the second-stage ejector are connected in series; the secondary ejector is connected with the feed inlet. The feed inlet is arranged on the top wall of the froth flotation column, the discharge outlet is arranged on the top wall or the side wall of the froth flotation column, and the circulating discharge outlet is arranged on the bottom wall of the froth flotation column. The beneficial effects of the utility model are as follows: the two-stage serial ejectors are used for realizing the efficient mixing of the carbon residue slurry, the flotation reagent and the air, so as to form a large number of micro bubbles; because the gas-liquid mixing effect is good, foam liquid is formed in the foam flotation column, so that the carbon residue slurry is fully contacted with micro bubbles, and the flotation efficiency is high.
Description
Technical Field
The utility model relates to the technical field of flotation devices, in particular to a jet type foam flotation device for treating electrolytic aluminum carbon residues.
Background
The carbon residue is a dangerous solid waste in the electrolytic aluminum industry, and the main components of the carbon residue are carbon and electrolyte, wherein the electrolyte mainly comprises cryolite, and also contains a small part of substances such as cryolite, sodium fluoride, aluminum oxide and the like. Because the carbon residue contains a certain amount of soluble fluoride salt, the carbon residue can be randomly piled up or landfilled to cause serious environmental hazard, and simultaneously, the resource waste is caused. Therefore, harmless treatment and recycling of the carbon residue are key technical problems to be solved in the electrolytic aluminum industry.
At present, the treatment mode of the carbon residue mainly adopts a flotation method, and the main principle is that the carbon residue crushed to a certain granularity is added with water for size mixing, then a flotation reagent is added, and the mixture is mixed and filled with air to foam the system. The hydrophobic carbon adheres to the bubbles and floats to the foam layer, and the hydrophilic electrolyte sinks, so that the separation of the carbon and the electrolyte in the carbon residue is realized. The utility model patent CN 107096646B discloses a method and a device for floating a coarse particle flotation column, ore pulp and bubbles are in countercurrent motion in the flotation column, and a bottom air charging device forms tiny bubbles from bottom to top by using compressed air and contacts with ore pulp particles moving from top to bottom for flotation. But the contact area of pulp particles and bubbles is limited, and the mixing effect is poor. The utility model CN 216605631U discloses a high concentration carbon residue flotation device which disperses the incoming air to form bubbles by high speed rotation of an impeller and is stirred and mixed with the added carbon residue. But the dynamic equipment is adopted, so that the flotation energy consumption is higher, and the equipment structure is more complex.
Aiming at the problems in the prior art, the sprayer has the advantages of simple structure and high-efficiency mixing, on the basis, the air-entraining foaming effect of the air-liquid sprayer is good, micro bubbles can be formed, the full contact between the particles to be floated and the bubbles is facilitated, the floatation efficiency is improved, and the sprayer has a good application prospect in the treatment of electrolytic aluminum carbon residues.
Disclosure of Invention
The utility model aims to provide a jet type froth flotation device for treating electrolytic aluminum carbon slag, which aims to solve the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
a spray type foam flotation device for treating electrolytic aluminum carbon slag is characterized in that: the device comprises a froth flotation column 12, wherein a feed inlet 10, a discharge outlet 13 and a circulating discharge outlet 14 are arranged on the wall of the froth flotation column 12;
the system comprises a first-stage ejector 1, a second-stage ejector 5 and an ejector, wherein the first-stage ejector 1 and the second-stage ejector 5 are connected in series; the secondary ejector 5 is connected with the feed inlet 10 and extends into the froth flotation column 12.
Preferably, the feed inlet 10 is provided on the top wall of the froth flotation column 12, the discharge outlet 13 is provided on the top wall or on the side wall of the froth flotation column 12, and the circulation discharge outlet 14 is provided on the bottom wall of the froth flotation column 12.
Preferably, the top of the primary injector 1 is provided with a carbon residue slurry inlet 2, the side wall of the primary injector 1 is provided with a flotation reagent inlet 3, and the bottom of the primary injector 1 is provided with a mixed slurry outlet 4.
Preferably, the top of the secondary ejector 5 is provided with a mixed slurry inlet 6, the side wall of the secondary ejector 5 is provided with an air inlet 7, and the bottom of the secondary ejector 5 is provided with a mixed foam slurry outlet 11.
Preferably, the mixed foam slurry outlet 11 of the secondary eductor 5 is positioned below the discharge outlet 13.
Preferably, the primary injector 1 and the secondary injector 5 are connected by a flange.
Preferably, the number of the discharging holes 13 is 1-3.
Preferably, the central axes of the primary eductor 1, the secondary eductor 5 and the froth flotation column 12 coincide.
Compared with the prior art, the utility model has the beneficial effects that:
(1) The two-stage serial ejectors are used for realizing the efficient mixing of the carbon residue slurry, the flotation reagent and the air, so as to form a large number of micro bubbles;
(2) Because the gas-liquid mixing effect is good, foam liquid is formed in the foam flotation column, so that carbon residue slurry fully contacts with micro bubbles, and the flotation efficiency is high;
(3) Simple structure, no moving equipment, self-priming air, low energy consumption and continuous operation.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
fig. 2 is a front cross-sectional view of the present utility model.
In the figure: the device comprises a first-stage ejector 1, a carbon residue slurry inlet 2, a flotation reagent inlet 3, a mixed slurry outlet 4, a second-stage ejector 5, a mixed slurry inlet 6, an air inlet 7, a contraction section 8, a diffusion section 9, a feed inlet 10, a mixed foam slurry outlet 11, a foam flotation column 12, a discharge port 13 and a circulating discharge port 14.
Detailed Description
The technical scheme of the utility model is further described below with reference to the attached drawings and specific embodiments.
Example 1
As shown in fig. 1 and 2, a jet froth flotation device for treating electrolytic aluminum carbon residue is characterized in that: the device comprises a froth flotation column 12, wherein a feed inlet 10, a discharge outlet 13 and a circulating discharge outlet 14 are arranged on the wall of the froth flotation column 12; the system comprises a first-stage ejector 1, a second-stage ejector 5 and an ejector, wherein the first-stage ejector 1 and the second-stage ejector 5 are connected in series; the secondary ejector 5 is connected with the feed inlet 10 and extends into the froth flotation column 12. The feed inlet 10 is arranged on the top wall of the froth flotation column 12, the discharge outlet 13 is arranged on the top wall or the side wall of the froth flotation column 12, and the circulating discharge outlet 14 is arranged on the bottom wall of the froth flotation column 12. The top of the primary injector 1 is provided with a carbon residue slurry inlet 2, the side wall of the primary injector 1 is provided with a flotation reagent inlet 3, and the bottom of the primary injector 1 is provided with a mixed slurry outlet 4. The top of the secondary ejector 5 is provided with a mixed slurry inlet 6, the side wall of the secondary ejector 5 is provided with an air inlet 7, and the bottom of the secondary ejector 5 is provided with a mixed foam slurry outlet 11.
Further, the mixed foam slurry outlet 11 of the secondary ejector 5 is located below the discharge port 13.
Further, the primary injector 1 and the secondary injector 5 are connected through a flange.
Further, the number of the discharge holes 13 is 1-3.
Further, the central axes of the primary eductor 1, the secondary eductor 5 and the froth flotation column 12 coincide.
In this embodiment, the jet froth flotation device works as follows: the prepared electrolytic aluminum carbon residue slurry and the flotation reagent respectively enter the primary injector 1 through the carbon residue slurry inlet 2 and the flotation reagent inlet 3 by a pump to be rapidly mixed, the fully mixed slurry is sprayed out from the mixed slurry outlet 4 and enters the secondary injector 5 through the mixed slurry inlet 6, and negative pressure is formed in the secondary injector 5 due to high slurry flow rate, so that air is sucked in from the air inlet 7. The air and the mixed slurry are fully mixed through the contraction section 8 of the secondary ejector 5, and are pressurized in the diffusion section 9 to generate a large number of micro bubbles, and the micro bubbles enter the froth flotation column 12 through the mixed froth slurry outlet 11, so that the efficient mixing among the carbon residue slurry, the flotation reagent and the air is realized, and the froth liquid is formed in the froth flotation column 12, so that the carbon residue is fully contacted with the micro bubbles. Under the influence of buoyancy, bubbles entrain hydrophobic carbon particles to move upwards, and finally the carbon particles are discharged from the discharge port 13 along with the foam liquid; the hydrophilic electrolyte flows downwards along with the slurry after the bubbles are desorbed in the foam flotation column 12 and is discharged from the circulating discharge port 14, so that the high-efficiency separation of carbon and electrolyte in the electrolytic aluminum carbon residue is realized, and the carbon and electrolyte which can be recycled are recovered.
Example 2
According to the jet type froth flotation device of the first embodiment, the test raw material is carbon slag of a certain electrolytic aluminum plant, and the composition is shown in table 1:
TABLE 1 chemical composition of electrolytic aluminum carbon slag
The specific flotation steps are as follows: adding electrolytic aluminum carbon residue to be treated (particle size of 75-96 mu m) into clear water to prepare carbon residue slurry with mass fraction of 20wt.%, and simultaneously preparing inhibitor sodium silicate, collector kerosene and foaming agent 2# oil into flotation reagent according to mass ratio of 16:16:1 (g/ton of clear water), and pumping the two into a two-stage ejector. The carbon residue slurry enters from a carbon residue slurry inlet 2, the flotation reagent enters from a flotation reagent inlet 3, and the two are rapidly mixed by a primary injector 1 and then sprayed out from a mixed slurry outlet 4, and then enter into a secondary injector 5 from a mixed slurry inlet 6. Because the jet speed is very fast, negative pressure is formed in the secondary ejector 5 to enable air to enter from the air inlet 7 in a self-priming mode, the air is fully mixed with the mixed slurry, a large number of micro bubbles are generated, and the micro bubbles enter the foam flotation column 12 through the mixed foam slurry outlet 11 to form foam liquid. Under the influence of buoyancy, carbon particles in the carbon residue rise along with bubbles, are discharged from a discharge hole 13, electrolyte-rich slurry after bubble desorption moves downwards in a foam flotation column 12, is discharged from a circulating discharge hole 14, and the electrolyte recovery rate is 91.58%.
Example 3: the jet froth flotation device according to example 1, the other operating steps are the same as in example 2, except that the concentration of the carbon residue slurry to be floated is 15wt.%, with an electrolyte recovery of 87.07%.
The above-described embodiments are merely a few preferred embodiments of the present utility model, and many alternative modifications and combinations of the above-described embodiments will be apparent to those skilled in the art based on the technical solutions of the present utility model and the related teachings of the above-described embodiments.
Claims (8)
1. A spray type foam flotation device for treating electrolytic aluminum carbon slag is characterized in that: the device comprises a foam flotation column (12), wherein a feed inlet (10), a discharge outlet (13) and a circulating discharge outlet (14) are arranged on the wall of the foam flotation column (12);
the system further comprises an ejector, wherein the ejector comprises a primary ejector (1) and a secondary ejector (5), and the primary ejector (1) and the secondary ejector (5) are connected in series; the secondary ejector (5) is connected with the feed inlet (10) and extends into the froth flotation column (12).
2. A jet froth flotation device for treating electrolytic aluminum carbon slag as defined in claim 1, wherein: the feeding port (10) is arranged on the top wall of the froth flotation column (12), the discharging port (13) is arranged on the top wall or the side wall of the froth flotation column (12), and the circulating discharging port (14) is arranged on the bottom wall of the froth flotation column (12).
3. A jet froth flotation device for treating electrolytic aluminum carbon slag as defined in claim 2, wherein: carbon residue slurry inlet (2) has been seted up at the top of one-level sprayer (1), flotation reagent inlet (3) have been seted up to the lateral wall of one-level sprayer (1), mixed back slurry outlet (4) have been seted up to the bottom of one-level sprayer (1).
4. A jet froth flotation device for treating electrolytic aluminum carbon slag according to claim 3, wherein: the top of second grade sprayer (5) has seted up back thick liquids import (6) after mixing, air inlet (7) have been seted up to the lateral wall of second grade sprayer (5), mixed foam thick liquids export (11) have been seted up to the bottom of second grade sprayer (5).
5. A spray froth flotation device for treating electrolytic aluminum carbon slag as recited in claim 4, wherein: the mixed foam slurry outlet (11) of the secondary ejector (5) is positioned below the discharge port (13).
6. A jet froth flotation device for treating electrolytic aluminum carbon slag as defined in claim 1, wherein: the primary ejector (1) and the secondary ejector (5) are connected through a flange.
7. A jet froth flotation device for treating electrolytic aluminum carbon slag as defined in claim 1, wherein: the number of the discharge holes (13) is 1-3.
8. A jet froth flotation device for treating electrolytic aluminum carbon slag as defined in claim 1, wherein: the central axes of the primary ejector (1), the secondary ejector (5) and the froth flotation column (12) are coincident.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321212102.0U CN219850150U (en) | 2023-05-19 | 2023-05-19 | Spray type foam flotation device for treating electrolytic aluminum carbon residues |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321212102.0U CN219850150U (en) | 2023-05-19 | 2023-05-19 | Spray type foam flotation device for treating electrolytic aluminum carbon residues |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219850150U true CN219850150U (en) | 2023-10-20 |
Family
ID=88321735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321212102.0U Active CN219850150U (en) | 2023-05-19 | 2023-05-19 | Spray type foam flotation device for treating electrolytic aluminum carbon residues |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219850150U (en) |
-
2023
- 2023-05-19 CN CN202321212102.0U patent/CN219850150U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108273668B (en) | Rapid flotation system and flotation method based on high-turbulence mixed mineralization | |
| CN109731697B (en) | Wide-size-fraction flotation system and process | |
| CN105855065B (en) | A kind of oxidized coal slime method for separating based on the pretreatment of nano bubble ore pulp | |
| CN108339673B (en) | Cavitation jet flow flotation bubble generator and flotation device | |
| RU2709877C1 (en) | Method for flotation of coal, having low floatability | |
| WO2017219924A1 (en) | Method of selectively separating coal slurry with poor floatation employing nanobubbles | |
| CN101370592A (en) | Improved flotation method | |
| CN110947525B (en) | Nanobubble flotation column | |
| CN103285625A (en) | Defoaming method for reverse flotation desilication of phosphorite | |
| CN103480503B (en) | Settling cyclonic micro-bubble flotation column separation unit and method | |
| CN112264198A (en) | Micro-nano bubble flotation machine | |
| CN115849489A (en) | Hydrodynamic cavitation dissolved air reactor for dissolved air floatation | |
| CN112122008B (en) | Central circulation flow guide type rotational flow inflatable flotation equipment and method | |
| CN219850150U (en) | Spray type foam flotation device for treating electrolytic aluminum carbon residues | |
| CN102179309A (en) | Foam controlling and flotation method for zinc oxide ore | |
| CN110899003A (en) | Novel controllable flotation of nanometer bubble device | |
| CN109939837B (en) | Composite flow enhanced flotation separation device and method | |
| CN205328666U (en) | Oil flow water separator is revolved in copolymerization | |
| CN202705080U (en) | Air flotation device | |
| CN101518757A (en) | Multistep refluent contact vibration type flotation tower and technology thereof | |
| CN105537007B (en) | A kind of mineral floating system | |
| CN2528533Y (en) | Jet flotation column | |
| CN210585395U (en) | Flotation device for promoting floating of coarse particle lean intergrowths | |
| CN204702532U (en) | A kind of air floatation machine | |
| CN210146239U (en) | Composite flow enhanced flotation separation device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |