Multifunctional refining chamber for mixing nanomaterials with metal liquid

Abstract

The utility model relates to metal smelting technical field, propose a kind of multifunctional refining chamber for mixing nanomaterial and metal liquid, including airtight refining cavity body, refining cavity body top is provided with driving motor and hollow stirring shaft, hollow stirring shaft is connected with inert gas and nanomaterial adding pipeline and auxiliary inert gas adding pipeline, hollow stirring shaft lower end is provided with mixing outlet, hollow stirring shaft lower part is provided with stirring wheel, refining cavity body inside is provided with multiple ultrasonic transducer, and refining cavity body is provided with heat preservation component;Nanomaterial is fully mixed with metal liquid in refining cavity body, temperature when refining and mixing of nanomaterial and metal liquid is accurately controlled using resistance heating, improve finished product quality;Refining cavity volume is small, and circulation time is fast, and energy consumption is lower;Mixed metal liquid coexist time is shorter in chamber, reduce all kinds of negative reactions in mixing process, control the output of harmful byproduct;Process is simpler, and cost is lower.

Description

Technical Field

[0001] This utility model relates to the field of metal smelting technology, and in particular to a multifunctional refining chamber for mixing nanomaterials with molten metal. Background Technology

[0002] Currently, when adding graphene and other nanomaterials (taking graphene as an example) to metals (taking aluminum as an example), cold fabrication and hot fabrication methods are commonly used. Cold fabrication often involves pulverizing and mixing the metal material and the nanomaterial, and then fusing them under high pressure and high temperature. Although this method yields products with good performance, it is also costly to implement.

[0003] Hot forming is divided into ordinary hot forming and intermediate alloy hot forming. Ordinary hot forming sometimes involves directly adding nanomaterials such as graphene into the holding furnace and stirring. This leads to problems such as uneven material distribution in the molten metal, severe agglomeration of nanomaterials (e.g., graphene), and high levels of adverse reactions (e.g., high Al4C3 formation, due to the prolonged coexistence of graphene and molten aluminum at high temperatures in the holding furnace). Some improved processes use ultrasonic waves for secondary dispersion at the flow channel, but these cannot effectively solve the problems of severely agglomerated graphene and the formation of large amounts of Al4C3. While the intermediate alloy method significantly improves quality compared to the ordinary method, it still suffers from high production costs (intermediate alloys need to be produced separately) and the long coexistence time of graphene and molten aluminum at high temperatures in the holding furnace. Utility Model Content

[0004] The present invention aims to provide a multifunctional refining chamber for mixing nanomaterials with molten metal, thereby enabling precise control of the addition of nanomaterials to metal materials, improving the mixing effect of nanomaterials and metal materials, and obtaining high-quality graphene and other nanomaterial-modified metals.

[0005] Therefore, the technical solution adopted by this utility model is as follows: a multifunctional refining chamber for mixing nanomaterials and molten metal, comprising a sealed refining chamber body, a drive motor and a hollow stirring shaft at the output end of the drive motor are provided at the top of the refining chamber body, an inert gas and nanomaterial inlet pipe and an auxiliary inert gas inlet pipe are connected to the hollow stirring shaft, a mixing outlet of inert gas and nanomaterials is provided at the lower end of the hollow stirring shaft, a safety valve is provided above the refining chamber body, a molten metal inlet is provided at the upper part of the refining chamber body and a molten metal outlet is provided at the lower part, a stirring wheel is provided at the lower part of the hollow stirring shaft, multiple ultrasonic transducers are provided inside the refining chamber body, and a heat preservation component is provided inside the refining chamber body.

[0006] As a preferred embodiment of the above scheme, a level sensor for detecting the height of the molten metal is provided in the refining chamber, and the connection point between the auxiliary inert gas inlet pipe and the hollow stirring shaft is located above the highest level of the molten metal.

[0007] More preferably, the heat preservation component includes a temperature sensor and a resistance heating rod disposed within the refining chamber body, wherein the resistance heating rod is vertically disposed within the refining chamber body.

[0008] More preferably, the number of ultrasonic transducers is four, which are respectively disposed in the middle of the front and rear side walls of the refining cavity body and in the lower part of the left and right side walls of the refining cavity body.

[0009] More preferably, the stirring wheel is spiral in shape and is arranged on a hollow stirring shaft.

[0010] The beneficial effects of this invention are as follows: By incorporating multiple functions such as mechanical stirring, electromagnetic stirring, and ultrasonic dispersion within the refining chamber, the nanomaterials are fully mixed with the molten metal within the chamber. Simultaneously, resistance heating is employed for temperature control, enabling precise temperature control during the refining and mixing of the nanomaterials and molten metal, thus improving the quality of the finished product. Compared to adding materials in a holding furnace, the refining chamber is smaller in size, has a faster circulation time, and consumes less energy. Furthermore, the mixed molten metal coexists within the chamber for a shorter period, reducing various negative reactions during mixing and effectively controlling the production of harmful byproducts. Compared to intermediate alloy and cold-working alloy production processes, the process is simpler and less costly. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the refining chamber of this utility model.

[0012] Figure 2 This is a schematic diagram showing the connection between the refining chamber, the heat preservation furnace, and the flow channel of this utility model. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] like Figures 1-2As shown, a multifunctional refining chamber for mixing nanomaterials and molten metal includes a sealed refining chamber body 1. A drive motor and a hollow stirring shaft 2 are installed at the top of the refining chamber body 1 and at the output end of the drive motor. An inert gas and nanomaterial inlet pipe 3 and an auxiliary inert gas inlet pipe 4 are connected to the hollow stirring shaft 2. A mixing outlet 5 for inert gas and nanomaterials is installed at the lower end of the hollow stirring shaft 2. A safety valve is installed above the refining chamber body 1. A molten metal inlet 6 is installed at the upper part of the refining chamber body 1 and a molten metal outlet 7 is installed at the lower part. A liquid level sensor 10 for detecting the liquid level of the molten metal is installed inside the refining chamber body 1. The connection point between the auxiliary inert gas inlet pipe and the hollow stirring shaft 2 is located above the highest liquid level of the molten metal.

[0015] The inert gas and nanomaterial addition pipe 3 and the auxiliary inert gas addition pipe 4 are connected to the hollow stirring shaft 2 via a rotary joint (this is existing technology and will not be described in detail here).

[0016] A stirring wheel 8 is installed at the lower part of the hollow stirring shaft 2, and multiple ultrasonic transducers 9 are installed inside the refining chamber body 1. A heat insulation component is also installed inside the refining chamber body 1. The stirring wheel 8 is spiral-shaped and arranged on the hollow stirring shaft 2. The spiral shape increases the contact area between the nanomaterials and the molten metal in the refining chamber, thereby improving the stirring efficiency.

[0017] The heat preservation component includes a temperature sensor 11 and a resistance heating rod 12 disposed inside the refining chamber body 1. The resistance heating rod 12 is vertically disposed inside the refining chamber body 1. Heating is achieved by the resistance heating rod 12, and the temperature sensor 11 detects the stability within the refining chamber body 1, ensuring that the refining chamber body 1 is at the optimal reaction temperature, thereby increasing the reaction yield and improving efficiency.

[0018] Four ultrasonic transducers 9 are disposed in the middle of the front and rear side walls and the lower part of the left and right side walls of the refining chamber body 1. Distributing multiple ultrasonic transducers 9 inside the refining chamber body 1 enhances the ultrasonic dispersion effect between the nanomaterials and the molten metal, facilitating better mixing of the nanomaterials and the molten metal.

[0019] A method for producing nanomaterials by mixing with molten metal involves connecting at least three refining chambers 1 to a holding furnace 13, with all refining chambers 1 connected to the same flow channel 14. The specific steps are as follows:

[0020] S1. Adding molten metal: While adding molten metal into the refining chamber body 1, inert gas is introduced through the inert gas and nanomaterial addition pipe 3 to expel the air in the refining chamber body 1. Then, the liquid level sensor 10 controls the highest liquid level of the molten metal to not exceed the connection between the auxiliary inert gas pipe and the hollow stirring shaft 2.

[0021] S2. Add nanomaterials: A certain amount of nanomaterials are added through the inert gas and nanomaterials addition pipe 3. During the process of adding nanomaterials, inert gas is continuously introduced. The mixture of inert gas and nanomaterials is introduced into the refining chamber body 1 from the lower part of the hollow stirring shaft 2.

[0022] S3. Mixing of nanomaterials and molten metal: During the addition of nanomaterials, start the drive motor to rotate the hollow stirring shaft 2 and start the ultrasonic transducer 9 to fully mix the nanomaterials and molten metal. If obvious air entrapment is found at the bottom of the hollow stirring shaft 2 during the stirring process, open the auxiliary inert gas addition pipe 4 to increase the amount of inert gas added, so that the inert gas forms a local atmosphere protection near the center of the hollow stirring shaft 2, isolating the residual air in the refining chamber body 1 and ensuring that the nanomaterials and molten metal are fully contacted and fused.

[0023] S4. Addition of mixed liquid: After the molten metal and nanomaterials are mixed, the molten metal outlet 7 is opened, and the mixed liquid is added to the flow channel 14. The three refining chamber bodies 1 work simultaneously and are in different states. After the molten metal in the first refining chamber body 1 is mixed and added to the flow channel 14, the second refining chamber body 1 is in a mixing state and completes the mixing before the molten metal in the flow channel 14 completely flows out, and then adds the molten metal to the flow channel 14. The third refining chamber body 1 adds the molten metal to the flow channel 14 before the molten metal in the second refining chamber body 1 completely flows out, thereby ensuring that there is a stable presence of molten metal in the flow channel 14, ensuring the processing of subsequent processes.

[0024] By incorporating multiple functions such as mechanical stirring, electromagnetic stirring, and ultrasonic dispersion within the refining chamber, the nanomaterials are thoroughly mixed with the molten metal within the refining chamber body 1. Simultaneously, resistance heating is employed for temperature control, enabling precise temperature control during the refining and mixing of the nanomaterials and molten metal, thus improving the quality of the finished product. Multiple refining chambers are provided; compared to adding materials within a holding furnace 13, each refining chamber is smaller in volume, has a faster cycle time, and consumes less energy. Furthermore, the mixed molten metal within the refining chamber coexists for a shorter period, reducing various negative reactions during mixing and effectively controlling the production of harmful byproducts. Compared to intermediate alloy and cold-working alloy production processes, the process is simpler and less costly.

[0025] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A multifunctional refining chamber for mixing nanomaterials with molten metal, characterized in that: The refining chamber includes a sealed refining chamber body (1), a drive motor and a hollow stirring shaft (2) at the output end of the drive motor are provided on the top of the refining chamber body (1), an inert gas and nanomaterial inlet pipe (3) and an auxiliary inert gas inlet pipe (4) are connected to the hollow stirring shaft (2), a mixing outlet (5) of inert gas and nanomaterial is provided at the lower end of the hollow stirring shaft (2), a safety valve is provided above the refining chamber body (1), a molten metal inlet (6) is provided at the upper part of the refining chamber body (1), a molten metal outlet (7) is provided at the lower part of the refining chamber body (1), a stirring wheel (8) is provided at the lower part of the hollow stirring shaft (2), multiple ultrasonic transducers (9) are provided inside the refining chamber body (1), and a heat preservation component is provided inside the refining chamber body (1).

2. The multifunctional refining chamber for mixing nanomaterials and molten metal according to claim 1, characterized in that: The refining chamber body (1) is equipped with a liquid level sensor (10) for detecting the height of the molten metal. The connection point between the auxiliary inert gas inlet pipe and the hollow stirring shaft (2) is located above the highest liquid level of the molten metal.

3. The multifunctional refining chamber for mixing nanomaterials and molten metal according to claim 2, characterized in that: The heat preservation component includes a temperature sensor (11) and a resistance heating rod (12) disposed inside the refining chamber body (1), wherein the resistance heating rod (12) is vertically disposed inside the refining chamber body (1).

4. The multifunctional refining chamber for mixing nanomaterials and molten metal according to claim 3, characterized in that: The number of ultrasonic transducers (9) is four, which are respectively located in the middle of the front and rear side walls of the refining cavity body (1) and the lower part of the left and right side walls of the refining cavity body (1).

5. The multifunctional refining chamber for mixing nanomaterials and molten metal according to claim 4, characterized in that: The stirring wheel (8) is spiral in shape and is arranged on the hollow stirring shaft (2).

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