CN219378409U - Oxidation reaction device for metal solid waste - Google Patents
Oxidation reaction device for metal solid waste Download PDFInfo
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- CN219378409U CN219378409U CN202320271763.4U CN202320271763U CN219378409U CN 219378409 U CN219378409 U CN 219378409U CN 202320271763 U CN202320271763 U CN 202320271763U CN 219378409 U CN219378409 U CN 219378409U
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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
- Y02P10/20—Recycling
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Abstract
The utility model discloses an oxidation reaction device for metal solid wastes, which comprises an oxidation reactor, a mixing coil and an air supply unit, wherein the oxidation reactor is provided with a reaction cavity; the mixing coil is provided with a coil discharge port and a coil feed port, the coil discharge port is communicated with the reaction cavity, and the coil feed port is communicated with the reaction cavity or the raw material feed port of the oxidation reactor; the air supply unit is communicated with the mixing coil. The oxidation reaction device for the metal solid wastes is reasonable in structure, and the oxidation gas is locked in the mixing coil through the mixing coil communicated with the oxidation reactor, so that the oxidation gas is prevented from overflowing too fast, and the contact time with the metal solid wastes is shortened; by means of the length of the mixing coil, the contact time of the oxidizing gas and the metal solid waste is prolonged, and the problem that the short contact time of the oxidizing gas and the metal solid waste is insufficient in reaction is effectively solved.
Description
Technical Field
The utility model relates to the technical field of metal solid waste regeneration, in particular to an oxidation reaction device for metal solid waste.
Background
Most of metal solid wastes are leaching residues, slag, sludge, ash and the like generated in the metallurgical process. The solid waste of metal has complex components and mainly contains various valuable metals such as copper, nickel, lead, zinc, gold, silver, chromium and the like. The valuable metal in the metal solid waste is usually extracted by dipping the metal solid waste through a chemical agent wet method to dissolve the valuable metal, and then carrying out oxidation-reduction reaction on the solution. Therefore, the refining method needs to add a strong oxidant in the oxidation-reduction reaction process to help the valuable metal to fully react, thereby improving the recovery rate of the metal. Therefore, the metal solid waste oxidation-reduction stage is of great importance.
CN207294856U patent discloses a treatment system for metal solid waste, comprising an ozone generating unit, an aeration unit, a stirring unit and a precipitation unit which are connected in sequence.
The prior art has the defects that:
although the production amount of the ozone is increased, the solid waste of the ozone oxidized metal has no secondary pollution; however, when the micro-nano bubbles generated by the aeration unit are mixed with the stirring unit, most of the gas cannot be well contacted and reacted with the metal solid waste slurry, and the oxidation effect of the metal solid waste is negatively influenced.
Therefore, there is a need for an improvement in the oxidation reaction apparatus for solid metal wastes in the prior art.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provide the oxidation reaction device for the metal solid wastes, wherein the oxidation gas is locked in the mixing coil through the mixing coil communicated with the oxidation reactor, so that the contact time of the oxidation gas and the metal solid wastes is prolonged, and the reaction is more sufficient.
In order to achieve the technical effects, the technical scheme of the utility model is as follows: an oxidation reaction device for metal solid wastes comprises an oxidation reactor provided with a reaction cavity; the mixing coil is provided with a coil discharge port and a coil feed port, the coil discharge port is communicated with the reaction cavity, and the coil feed port is communicated with the reaction cavity or a raw material inlet of the oxidation reactor; and the air supply unit is communicated with the mixing coil pipe.
The preferable technical scheme is that the reaction cavity comprises an inner reaction chamber and an outer reaction chamber sleeved on the periphery of the inner reaction chamber, the top of the inner reaction chamber is sealed, an opening communicated with the outer reaction chamber is arranged at the bottom of the inner reaction chamber, and a discharge port of the coil pipe faces to the opening of the inner reaction chamber.
The preferable technical scheme is that the oxidation reactor is provided with a stirrer, one end of the stirrer is rotationally connected with the oxidation reactor, and the other end of the stirrer penetrates through the inner reaction chamber and is rotationally connected with the inner reaction chamber.
The preferable technical scheme is that the mixing coil is wound on the outer side wall of the oxidation reactor, and the coil feeding port is communicated with the outer reaction chamber.
The preferable technical scheme is that the mixing coil is provided with a venturi tube, and the air supply unit is communicated with the throat part of the venturi tube.
The preferable technical scheme is that the air supply unit comprises an aerator, and an air outlet of the aerator is communicated with the throat part of the venturi tube.
The preferable technical scheme is that the oxidation reactor is provided with a reaction material outlet, and the reaction material outlet is communicated with the inner reaction chamber.
The preferable technical scheme is that the oxidation reactor is provided with a raw material inlet and a gas overflow outlet, and the raw material inlet and the gas overflow outlet are communicated with the outer reaction chamber.
The utility model has the advantages and beneficial effects that:
the oxidation reaction device for the metal solid wastes is reasonable in structure, and the oxidation gas is locked in the mixing coil through the mixing coil communicated with the oxidation reactor, so that the oxidation gas is prevented from overflowing too fast, and the contact time with the metal solid wastes is shortened; by means of the length of the mixing coil, the contact time of the oxidizing gas and the metal solid waste is prolonged, and the problem that the short contact time of the oxidizing gas and the metal solid waste is insufficient in reaction is effectively solved.
Drawings
FIG. 1 is a schematic structural view of an oxidation reaction apparatus for solid metal wastes;
fig. 2 is a schematic view of another structure of an oxidation reaction apparatus for metal solid wastes.
In the figure: 1. an oxidation reactor; 2. a mixing coil; 3. an air supply unit; 4. a stirrer; 5. a transfer pump; 10. a reaction chamber; 11. a raw material inlet; 12. a reaction material outlet; 13. a gas overflow port; 20. a coil pipe feed inlet; 21. a coil pipe discharge port; 22. a venturi tube; 30. an aerator; 101. an inner reaction chamber; 102. an outer reaction chamber; 110. and a fixing piece.
Detailed Description
The following describes the embodiments of the present utility model further with reference to the drawings and examples. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and are not intended to limit the scope of the present utility model.
The terms "top", "bottom" and "bottom" are used with reference to the normal use of the oxidation reaction apparatus for metal solid waste, and are merely for convenience of description and to simplify the description, and are not intended to indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the utility model.
As shown in fig. 1-2, the oxidation reaction device for metal solid wastes comprises an oxidation reactor 1, a mixing coil 2 and a gas supply unit 3, wherein the oxidation reactor 1 is provided with a reaction cavity 10; the mixing coil 2 is provided with a coil discharge hole 21 and a coil feed hole 20, the coil discharge hole 21 is communicated with the reaction cavity 10, and the coil feed hole 20 is communicated with the reaction cavity 10 or the raw material inlet 11 of the oxidation reactor 1; the air supply unit 3 communicates with the mixing coil 2.
The reaction cavity 10 comprises an inner reaction chamber 101 and an outer reaction chamber 102 sleeved on the periphery of the inner reaction chamber 101, the top of the inner reaction chamber 101 is sealed, an opening communicated with the outer reaction chamber 102 is arranged at the bottom of the inner reaction chamber 101, and a coil pipe discharge port 21 faces to the opening of the inner reaction chamber 101. After the oxidizing gas partially mixed in the raw materials overflows, the top sealed by the inner reaction chamber 101 is blocked, so that the contact time of the raw materials and the oxidizing gas is effectively prolonged, and the reaction is more complete. The opening of the inner reaction chamber 101 is directed towards the bottom and/or the side walls of the oxidation reactor 1. Preferably, the opening of the inner reaction chamber 101 is directed towards the bottom surface of the oxidation reactor 1. When the opening of the inner reaction chamber 101 faces the bottom surface of the oxidation reactor 1, the distance from the opening of the inner reaction chamber 101 to the top of the inner reaction chamber 101 is larger, the amount of the oxidizing gas contained is larger, and the time for mixing and contacting the oxidizing gas with the raw materials is longer. A fixing piece 110 is arranged between the inner reaction chamber 101 and the oxidation reactor 1, and the fixing piece 110 is provided with a material through hole.
The raw materials comprise metal solid waste, chemical solution and catalyst. The oxidation reactor 1 is a cylindrical reaction kettle. The mixing coil 2 is provided with a plurality of coil units, which are spirally arranged. The mixing coil 2 is disposed in the reaction chamber 10 of the oxidation reactor 1, and for better stability and longer contact time between the raw material and the oxidizing gas, the outer diameter of the mixing coil 2 is equal to the inner diameter of the reaction chamber 10 of the oxidation reactor 1, i.e. the mixing coil 2 is wound around the circumferential side wall of the oxidation reactor 1. The coil pipe feed inlet 20 is communicated with the raw material inlet 11 of the oxidation reactor 1, the coil pipe discharge outlet 21 is arranged at the bottom of the oxidation reactor 1, and the coil pipe discharge outlet 21 is pressed by the gravity of the raw material, so that the overflow of the oxidizing gas is effectively prevented, the contact time of the raw material and the oxidizing gas is further prolonged, and the reaction is more complete. The air outlet of the air supply unit 3 is arranged in the oxidation reactor 1 in a penetrating way through a pipeline and is communicated with a coil feed port 20 of the mixing coil 2.
In order to promote the dissolution of the oxidizing gas in the raw material and thus to make sufficient contact with the raw material, the oxidation reactor 1 is provided with a stirrer 4, one end of the stirrer 4 is rotatably connected to the oxidation reactor 1, and the other end is disposed through the inner reaction chamber 101 and rotatably connected to the inner reaction chamber 101. The stirrer 4 is selected according to the viscosity of the raw materials or actual needs, and the impeller of the stirrer 4 includes, but is not limited to, a screw type impeller, an anchor type impeller, a frame type impeller, a propeller type impeller, and the like. In order to prolong the residence time of the raw material and oxidizing gas mixture at the coil discharge port 21 in the internal reaction chamber 101, the impeller of the stirrer 4 is a ribbon impeller.
In a preferred embodiment, as shown in FIG. 2, a mixing coil 2 is disposed around the outside wall of the oxidation reactor 1, with the coil feed 20 in communication with the outer reaction chamber 102. The mixing coil 2 is arranged around the outer side wall of the oxidation reactor 1, on the one hand, the maintenance and replacement of the mixing coil 2 are facilitated, and on the other hand, the space around which the mixing coil 2 is arranged and the number of coil units are more flexible to adjust. The coil feed port 20 is communicated with the outer reaction chamber 102, so that raw materials which are not contacted with oxidizing gas in the oxidation reactor 1 are continuously output, and materials between the inner reaction chamber 101 and the outer reaction chamber 102 are continuously mixed, so that the contact time of the raw materials and the oxidizing gas is further prolonged. Since the coil discharge port 21 is disposed at the bottom of the oxidation reactor 1, the flow direction of the mixture in the mixing coil 2 is from top to bottom, and the coil discharge port 20 is disposed near the bottom of the oxidation reactor 1 for uniformly mixing the raw materials in the oxidation reactor 1, the mixing coil 2 is provided with the transfer pump 5.
In order to better mix the oxidizing gas with the raw material transported by the mixing coil and to promote dissolution of the oxidizing gas in the raw material, the mixing coil 2 is provided with a venturi tube 22, and the gas supply unit 3 communicates with the throat of the venturi tube 22. The air supply unit 3 includes an aerator 30, and an air outlet of the aerator 30 communicates with the throat of the venturi tube 22.
The oxidation reactor 1 is provided with a reaction material outlet 12, the reaction material outlet 12 being in communication with the inner reaction chamber 101. The oxidation reactor 1 is provided with a raw material inlet 11 and a gas overflow outlet 13, both the raw material inlet 11 and the gas overflow outlet 13 being in communication with the outer reaction chamber 102. The raw material inlet 11 and the gas overflow 13 are both provided at the top of the oxidation reactor 1.
The oxidation reactor 1 is used for intermittent oxidation of metal solid waste slurry, and therefore, a raw material inlet 11, a gas overflow outlet 13 and a reaction material outlet 12 of the oxidation reactor 1 are all provided with first regulating valves; the air outlet of the air supply unit 3 is provided with a second regulating valve; the coil discharging hole 21 and the coil feeding hole 20 of the mixing coil 2 are both provided with a third regulating valve.
Raw materials enter the outer reaction chamber 102 from the raw material inlet 11 of the oxidation reactor 1, the raw materials are output through the coil feed port 20 arranged on the mixing coil 2 by the conveying pump 5, the oxidizing gas generated by the gas supply unit 3 is sent into the mixing coil 2, the oxidizing gas is dissolved in the raw materials at the venturi tube 22, the oxidizing gas and the raw materials collide with each other in a smaller space, the raw materials are fully mixed again through the mixing coil 2 spiraling on the outer side wall of the oxidation reactor 1 and then flow into the inner reaction chamber 101 of the oxidation reactor 1, the mixed raw materials of the inner reaction chamber 101 are fully mixed again from top to bottom under the action of the stirrer 4, the reaction of the oxidizing gas and the raw materials is further promoted, the raw materials are mixed with the raw materials of the outer reaction chamber 102, enter the mixing coil 2 to be recycled and contact with the oxidizing gas again, and the raw materials in the oxidation reactor 1 are output from the reaction material outlet 12 to enter the precipitation unit after the raw materials in the oxidation reactor 1 are fully reacted. And (5) oxidizing the metal solid waste slurry in a batch.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present utility model, and these modifications and variations should also be regarded as the scope of the utility model.
Claims (8)
1. An oxidation reaction device for metal solid wastes is characterized by comprising,
an oxidation reactor (1) provided with a reaction cavity (10);
the mixing coil (2) is provided with a coil discharge hole (21) and a coil feed hole (20), the coil discharge hole (21) is communicated with the reaction cavity (10), and the coil feed hole (20) is communicated with the reaction cavity (10) or a raw material inlet (11) of the oxidation reactor (1);
and the air supply unit (3) is communicated with the mixing coil pipe (2).
2. The oxidation reaction device for metal solid wastes according to claim 1, wherein the reaction cavity (10) comprises an inner reaction chamber (101) and an outer reaction chamber (102) sleeved on the periphery of the inner reaction chamber (101), the top of the inner reaction chamber (101) is sealed, an opening communicated with the outer reaction chamber (102) is arranged at the bottom of the inner reaction chamber (101), and the coil pipe discharge port (21) faces to the opening of the inner reaction chamber (101).
3. The oxidation reaction device for metal solid wastes according to claim 2, wherein the oxidation reactor (1) is provided with a stirrer (4), one end of the stirrer (4) is rotatably connected with the oxidation reactor (1), and the other end is penetrated in the inner reaction chamber (101) and rotatably connected with the inner reaction chamber (101).
4. The oxidation reaction apparatus of solid metal wastes according to claim 2, characterized in that the mixing coil (2) is wound on the outer side wall of the oxidation reactor (1), and the coil feed port (20) is communicated with the outer reaction chamber (102).
5. An oxidation reaction device for solid metal wastes according to claim 2 or 4, characterized in that the mixing coil (2) is provided with a venturi tube (22), and the air supply unit (3) is in communication with the throat of the venturi tube (22).
6. The oxidation reaction apparatus of metal solid waste according to claim 5, wherein the air supply unit (3) includes an aerator (30), and an air outlet of the aerator (30) communicates with a throat of the venturi tube (22).
7. The oxidation reaction apparatus of solid metal wastes according to claim 2, characterized in that the oxidation reactor (1) is provided with a reaction material outlet (12), the reaction material outlet (12) being in communication with the inner reaction chamber (101).
8. The oxidation reaction apparatus of metal solid waste according to claim 2, wherein the oxidation reactor (1) is provided with a raw material inlet (11) and a gas overflow outlet (13), both the raw material inlet (11) and the gas overflow outlet (13) being in communication with the outer reaction chamber (102).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320271763.4U CN219378409U (en) | 2023-02-21 | 2023-02-21 | Oxidation reaction device for metal solid waste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320271763.4U CN219378409U (en) | 2023-02-21 | 2023-02-21 | Oxidation reaction device for metal solid waste |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219378409U true CN219378409U (en) | 2023-07-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320271763.4U Active CN219378409U (en) | 2023-02-21 | 2023-02-21 | Oxidation reaction device for metal solid waste |
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| Country | Link |
|---|---|
| CN (1) | CN219378409U (en) |
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2023
- 2023-02-21 CN CN202320271763.4U patent/CN219378409U/en active Active
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