A metal indium purification furnace

Abstract

The utility model relates to metal indium purification technical field, and disclose a kind of metal indium purification furnace, including inner tube and outer tube, the inner tube is nested in the inside of outer tube, the outer surface of inner tube and the inner wall of outer tube form circulation cavity for circulating water between, one end of outer tube is hingedly connected with sealing door, one side of outer tube is fixedly connected with water inlet pipe and backwater pipe, water inlet pipe and backwater pipe are all with the inside of circulation cavity for circulating cooling water, the inside of inner tube is equipped with heating bin, the inside of heating bin is equipped with heating mechanism, the utility model provides a kind of metal indium purification furnace, by the cooperation setting of condensing plate, water hose and first flow guide mechanism, incoming water pipe can be sent into condensing plate into the cold water, condensing plate is cooled, so that the metal volatilized is condensed on condensing plate, to improve the purity of raw material in heating mechanism.

Description

Technical Field

[0001] This utility model relates to the field of indium metal purification technology, and specifically to an indium metal purification furnace. Background Technology

[0002] Indium, an important rare metal, is widely used in semiconductors, liquid crystal displays, low-melting-point alloys and other fields due to its excellent physicochemical properties (such as low melting point, high electrical and thermal conductivity, good ductility and strong light transmittance). With the rapid development of high-tech industries, the demand for high-purity indium is increasing day by day.

[0003] In the refining and purification process of metallic indium, vacuum distillation has become one of the mainstream methods due to its advantages of high efficiency, low pollution, and high product purity. This method is usually carried out in a special metallic indium purification furnace. By heating metallic indium to a temperature above its melting point but below its boiling point, the impurities such as cadmium, zinc, thallium, and sulfur mixed in the solution are volatilized, thereby improving the purity of the metallic indium solution.

[0004] However, indium needs to be heated to over 1,000 degrees Celsius during the heating process, requiring additional heat insulation measures on the outside of the furnace to reduce heat loss to the outside. However, this type of insulation can only provide insulation and cannot remove heat. During prolonged heating, the outer shell will continue to heat up, affecting the comfort of the operating environment. At the same time, the evaporated metal impurities need to be recovered to prevent them from escaping to the outside. Therefore, a device is needed to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides an indium refining furnace that solves the problems of high outer shell temperature and difficulty in collecting volatile metals.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: an indium metal purification furnace, comprising an inner cylinder and an outer cylinder, wherein the inner cylinder is nested inside the outer cylinder, and a circulation chamber for circulating water is formed between the outer surface of the inner cylinder and the inner wall of the outer cylinder, a sealing door is hinged to one end of the outer cylinder, and an inlet pipe and a return pipe are fixedly connected to one side of the outer cylinder, wherein the inlet pipe and the return pipe are connected to the interior of the circulation chamber for circulating cooling water; The inner cylinder has a heating chamber inside, and the heating chamber has a heating mechanism inside. The upper part of the heating mechanism has a condensing plate. The condensing plate is connected to the inside of the circulation chamber through a water supply hose to deliver cooling water. The condensing plate has a first flow guiding mechanism inside, and the condensing plate is used to condense volatile metals.

[0007] Optionally, the circulation chamber is provided with a second flow guiding mechanism, which is used to guide the cooling water in the circulation chamber.

[0008] Optionally, the second flow guiding mechanism includes a partition plate for separating the circulation chamber and a plurality of flow guiding plates for guiding the flow. The partition plate is fixedly connected to the outer surface of the inner cylinder. The side of the partition plate away from the inner cylinder is attached to the inner wall of the outer cylinder. The two ends of the partition plate are respectively attached to the inner wall of the outer cylinder flange to divide the circulation chamber into an inlet end and a return end. The inlet pipe and the return pipe are respectively connected to the inlet end and the return end. The flow guiding plates are distributed in a ring along the outer surface of the inner cylinder, and one end of the flow guiding plate is spaced apart from the outer cylinder flange to form an opening for cooling water to flow through. The openings are staggered to allow the cooling water to flow back.

[0009] Optionally, a sealing gasket is fixedly connected to the side of the partition plate and the guide plate away from the inner cylinder, and the other end of the sealing gasket is fitted with the inside of the outer cylinder to improve the sealing performance.

[0010] Optionally, the heating mechanism includes a heat insulation layer and a heating cylinder. The heat insulation layer is fixedly connected to the inner wall of the inner cylinder, and the heating cylinder is detachably disposed on the upper surface of the heat insulation layer. The interior of the heating cylinder is used to hold raw materials, and the condenser plate is disposed on the top of the heating cylinder to seal the heating cylinder.

[0011] Optionally, a positioning ring is fixedly connected to the lower surface of the condensing plate, the positioning ring being adapted to the diameter of the heating cylinder, the condensing plate being detachably mounted on the top of the heating cylinder, and the positioning ring being sleeved on the top of the heating cylinder.

[0012] Optionally, the first flow guiding mechanism includes a flow chamber and baffles. The flow chamber is located inside the condenser plate, and the baffles are multiple and staggered inside the flow chamber.

[0013] Optionally, the surface of the sealed door is provided with an observation window for observing the heating chamber, and an annular rubber heat insulation pad is fixedly connected to the inner side of the sealed door.

[0014] This utility model provides an indium metal purification furnace, which has the following beneficial effects: This invention provides an indium refining furnace. Through the coordinated arrangement of an inner cylinder, an outer cylinder, and a circulation chamber, a circulation channel for cooling water is formed between the inner and outer cylinders. Cooling water is introduced into the circulation chamber via an inlet pipe and a return pipe to cool the inner and outer cylinders, reducing heat transfer to the outside during heating and keeping the outer shell at a lower temperature, thus improving the comfort of the operating environment. The coordinated arrangement of a condensing plate, a water supply hose, and a first flow guiding mechanism allows cold water supplied by the inlet pipe to be introduced into the condensing plate, cooling it and causing the volatilized metal to condense on the condensing plate, improving the purity of the raw materials within the heating mechanism. This eliminates the need for external discharge, making subsequent processing more convenient. The first flow guiding mechanism directs the flow of cooling water within the condensing plate, ensuring more thorough contact between the cooling water and the condensing plate. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a front cross-sectional view of the present invention. Figure 3 This is a schematic diagram of the outer side of the inner cylinder of this utility model; Figure 4 This is a cross-sectional structural diagram of the connection between the inner and outer cylinders of this utility model.

[0016] In the diagram: 1. Inner cylinder; 2. Outer cylinder; 3. Circulation chamber; 4. Sealing door; 5. Water inlet pipe; 6. Water return pipe; 7. Heating chamber; 8. Condensation plate; 9. Divider plate; 10. Guide plate; 11. Water inlet end; 12. Water return end; 13. Sealing gasket; 14. Heat insulation layer; 15. Heating cylinder; 16. Positioning ring; 17. Flow chamber; 18. Baffle; 19. Observation window; 20. Rubber heat insulation pad. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0018] Please see Figures 1 to 4 This utility model provides a technical solution: an indium metal purification furnace, including an inner cylinder 1 and an outer cylinder 2. The inner cylinder 1 is nested inside the outer cylinder 2. A circulation chamber 3 for circulating water is formed between the outer surface of the inner cylinder 1 and the inner wall of the outer cylinder 2. A sealing door 4 is hinged to one end of the outer cylinder 2. An inlet pipe 5 and a return pipe 6 are fixedly connected to one side of the outer cylinder 2. Both the inlet pipe 5 and the return pipe 6 are connected to the inside of the circulation chamber 3 to circulate cooling water.

[0019] The inner cylinder 1 has a heating chamber 7 inside, and a heating mechanism is provided inside the heating chamber 7. A condensing plate 8 is provided on the upper part of the heating mechanism. The condensing plate 8 is connected to the interior of the circulation chamber 3 through a water supply hose to deliver cooling water. The condensing plate 8 is provided with a first flow guiding mechanism inside, and the condensing plate 8 is used to condense volatile metals.

[0020] The inlet pipe 5 introduces external cold water into the inner circulation chamber 3. After passing through the circulation chamber 3, the water is discharged from the return pipe 6. An external cooling device can be installed to cool the cooling water to achieve the effect of recycling. The raw material to be purified is placed in the heating mechanism. The heating mechanism heats the raw material, causing impurities with low boiling points to volatilize, thereby improving the purity of the remaining raw material in the heating mechanism. The condenser plate 8 is installed on the heating mechanism and communicates with the circulation chamber 3. Cooling water can enter the condenser plate 8 at the same time as entering the circulation chamber 3 to cool the condenser plate 8. When the volatilized metal comes into contact with the condenser plate 8, the volatilized metal will condense on the condenser plate 8 because the temperature of the condenser plate 8 is low. After purification, the metal can be cleaned to prevent metal vapor from escaping to the outside of the container.

[0021] In this embodiment, as a preferred option, the second flow guiding mechanism includes a partition plate 9 for separating the circulation chamber 3 and a plurality of flow guiding plates 10 for guiding the flow. The partition plate 9 is fixedly connected to the outer surface of the inner cylinder 1. The side of the partition plate 9 away from the inner cylinder 1 is attached to the inner wall of the outer cylinder 2. The two ends of the partition plate 9 are respectively attached to the inner wall of the flange of the outer cylinder 2 to divide the circulation chamber 3 into an inlet end 11 and a return end 12. The inlet pipe 5 and the return pipe 6 are respectively connected to the inlet end 11 and the return end 12. The flow guiding plates 10 are distributed in a ring along the outer surface of the inner cylinder 1, and one end of the flow guiding plate 10 is spaced apart from the flange of the outer cylinder 2 to form an opening for cooling water to flow through. The openings are staggered to allow the cooling water to flow back. The partition plate 9 and the flow guiding plate 10 are both fixedly connected to a sealing gasket 13 on the side away from the inner cylinder 1. The other end of the sealing gasket 13 is attached to the inside of the outer cylinder 2 to improve the sealing performance.

[0022] The partition plate 9 separates the circulation chamber 3. After the cooling water enters the circulation chamber 3 from the inlet pipe 5, it moves to the other end of the circulation chamber 3. The guide plate 10 guides the flow of the cooling water, making the cooling water move in an S-shape in the circulation chamber 3, thereby increasing the contact range between the cooling water and the circulation chamber 3 and reducing the dead zone formed by the cooling water during the flow. After being guided by multiple guide plates 10, the cooling water flows to the return end 12 and then flows out from the return pipe 6. After being cooled, it is transported back to the inlet pipe 5. The water supply hose connects the condenser plate 8 to the circulation chamber 3. When the cooling water enters the inlet end 11, part of it enters the circulation chamber 3 for circulation, and the other part enters the condenser plate 8 through the water supply hose to cool the condenser plate 8. After cooling, the water discharged from the condenser plate 8 mixes with the water in the circulation chamber 3 and is discharged from the return pipe 6.

[0023] In this embodiment, as a preferred option, the heating mechanism includes a heat insulation layer 14 and a heating cylinder 15. The heat insulation layer 14 is fixedly connected to the inner wall of the inner cylinder 1. The heating cylinder 15 is detachably disposed on the upper surface of the heat insulation layer 14. The interior of the heating cylinder 15 is used to hold raw materials. A condensing plate 8 is placed on the top of the heating cylinder 15 to seal the heating cylinder 15. A positioning ring 16 is fixedly connected to the lower surface of the condensing plate 8. The positioning ring 16 is adapted to the diameter of the heating cylinder 15. The condensing plate 8 is detachably disposed on the top of the heating cylinder 15. The positioning ring 16 is sleeved on the top of the heating cylinder 15.

[0024] The heat insulation layer 14 reduces the heat transferred from the heating cylinder 15 to the inner cylinder 1, reducing the heat dissipation burden. The heating cylinder 15 can be equipped with an induction heater on the outer wall of the crucible, which heats the metal inside the heating cylinder 15 through induction heating. The heating cylinder 15 can be removed from the induction coil for easy collection of raw materials inside the heating cylinder 15. The positioning ring 16 below the condensing plate 8 is adapted to the size of the heating cylinder 15, so that the positioning ring 16 can be fastened on the heating cylinder 15, thereby fixing the position of the condensing plate 8 and preventing the condensing plate 8 from shaking.

[0025] In this embodiment, as a preferred option, the first flow guiding mechanism includes a flow chamber 17 and baffles 18. The flow chamber 17 is opened inside the condenser plate 8, and the baffles 18 are multiple and are arranged alternately inside the flow chamber 17.

[0026] Cooling water enters from one end and is blocked by baffle 18 as it flows through flow chamber 17. Baffle 18 is made of the same material as condenser plate 8, which increases the contact area between condenser plate 8 and cooling water, thereby improving heat exchange efficiency and making the cooling of condenser plate 8 more efficient.

[0027] In this embodiment, as a preferred option, the surface of the sealing door 4 is provided with an observation window 19 for observing the heating chamber 7, and an annular rubber heat insulation pad 20 is fixedly connected to the inner side of the sealing door 4.

[0028] In this invention, the working steps of the device are as follows: 1. Connect the cold water pipe and return water pipe 6 to the external water supply hose, place the raw material to be purified in the heating cylinder 15, place the heating cylinder 15 on the heat insulation layer 14, cover the heating cylinder 15 with the condenser plate 8, and ensure that the positioning ring 16 below is compatible with the heating cylinder 15. 2. After installation, close the sealing door 4, start the induction heater to heat the heating cylinder 15, and at the same time, send cooling water into the water inlet pipe 5 to cool the inner cylinder 1 and the condenser plate 8. The volatilized metal will condense on the condenser plate 8. 3. After purification, open the sealed door 4, remove the condenser plate 8 and the heating cylinder 15, clean the metal impurities on the condenser plate 8, and collect the purified metal in the heating cylinder 15.

[0029] The specific embodiments provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A metal indium purification furnace, characterized in that: The device includes an inner cylinder (1) and an outer cylinder (2). The inner cylinder (1) is nested inside the outer cylinder (2). A circulation chamber (3) for circulating water is formed between the outer surface of the inner cylinder (1) and the inner wall of the outer cylinder (2). A sealing door (4) is hinged to one end of the outer cylinder (2). An inlet pipe (5) and a return pipe (6) are fixedly connected to one side of the outer cylinder (2). Both the inlet pipe (5) and the return pipe (6) are connected to the inside of the circulation chamber (3) to circulate cooling water. The inner cylinder (1) has a heating chamber (7) inside, the heating chamber (7) has a heating mechanism inside, the upper part of the heating mechanism has a condensing plate (8), the condensing plate (8) is connected to the interior of the circulation chamber (3) through a water supply hose to transport cooling water, the condensing plate (8) has a first flow guiding mechanism inside, and the condensing plate (8) is used to condense volatile metals.

2. The indium refining furnace according to claim 1, characterized in that: The circulation chamber (3) is provided with a second flow guiding mechanism, which is used to guide the cooling water in the circulation chamber (3).

3. The indium refining furnace according to claim 2, characterized in that: The second flow guiding mechanism includes a partition plate (9) for separating the circulation chamber (3) and a plurality of flow guiding plates (10) for guiding the flow. The partition plate (9) is fixedly connected to the outer surface of the inner cylinder (1). The side of the partition plate (9) away from the inner cylinder (1) is attached to the inner wall of the outer cylinder (2). The two ends of the partition plate (9) are attached to the inner wall of the flange of the outer cylinder (2) respectively, so as to divide the circulation chamber (3) into an inlet end (11) and a return end (12). The inlet pipe (5) and the return pipe (6) are respectively connected to the inlet end (11) and the return end (12). The flow guiding plates (10) are distributed in a ring along the outer surface of the inner cylinder (1), and one end of the flow guiding plate (10) is spaced apart from the flange of the outer cylinder (2) to form an opening for cooling water to flow through. The openings are staggered to allow the cooling water to flow back.

4. The indium refining furnace according to claim 3, characterized in that: Both the partition plate (9) and the guide plate (10) are fixedly connected to a sealing gasket (13) on the side away from the inner cylinder (1), and the other end of the sealing gasket (13) is fitted with the inside of the outer cylinder (2) to improve the sealing performance.

5. An indium refining furnace according to any one of claims 1-4, characterized in that: The heating mechanism includes a heat insulation layer (14) and a heating cylinder (15). The heat insulation layer (14) is fixedly connected to the inner wall of the inner cylinder (1). The heating cylinder (15) is detachably installed on the upper surface of the heat insulation layer (14). The interior of the heating cylinder (15) is used to hold raw materials. The condenser plate (8) is placed on the top of the heating cylinder (15) to seal the heating cylinder (15).

6. The indium refining furnace according to claim 5, characterized in that: A positioning ring (16) is fixedly connected to the lower surface of the condensing plate (8). The positioning ring (16) is adapted to the diameter of the heating cylinder (15). The condensing plate (8) is detachably mounted on the top of the heating cylinder (15). The positioning ring (16) is sleeved on the top of the heating cylinder (15).

7. The indium refining furnace according to claim 6, characterized in that: The first flow guiding mechanism includes a flow chamber (17) and baffles (18). The flow chamber (17) is located inside the condenser plate (8), and there are multiple baffles (18) arranged alternately inside the flow chamber (17).

8. An indium refining furnace according to any one of claims 1-4, characterized in that: The surface of the sealed door (4) is provided with an observation window (19) for observing the heating chamber (7), and an annular rubber heat insulation pad (20) is fixedly connected to the inside of the sealed door (4).

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