Closed circulation system for precious metal atomization pulverization

Abstract

The utility model discloses a closed circulating system for precious metal atomization pulverization, which belongs to the technical field of metal powder materials and comprises an atomization tower, a smelting furnace, a vibrating screen, a cooling water tank, a suction filtration tank, a diaphragm pump and a circulating pipeline. Metal is melted through a smelting furnace and then flows into an atomization tower, high-pressure water atomization is carried out to form fine powder, powder slurry flows into a vibrating screen after precipitation, coarse slag is screened and separated into a suction filtration box, the suction filtration box filters and collects the metal powder, then atomized water is conveyed into a cooling water tank through a diaphragm pump, and the atomized water is used again after being cooled. Precious metal recovery rate is increased, and precious metal loss is reduced; the diaphragm pump can provide negative pressure to timely pump out atomized water doped with trace precious metals generated in the atomization process, and the atomized water returns to the cooling water tank through precipitation and filtration, so that the fine precious metals can be recovered, the recovery rate of the precious metal powder can be improved, and the component pollution can be reduced.

Description

Technical Field

[0001] This utility model belongs to the field of metal powder material technology, specifically a closed-loop circulation system for precious metal atomization powder making. Background Technology

[0002] In the field of precious metal powder production, metal atomization powder production technology is widely used to produce high-quality metal powders. Metal atomization powder production is achieved by heating the metal raw material to its melting point and then rapidly cooling and solidifying it by spraying it with a high-speed water jet. This powder production method can produce metal powders with uniform particle size, excellent flowability, and high purity, suitable for many applications such as powder metallurgy, 3D printing, and electronic materials.

[0003] However, the process of precious metal atomization powder production generates a large amount of waste gas, steam and impurities, which pollute the environment. In addition, some of the metal powder is mixed in the atomized water, which is difficult to collect, resulting in material waste.

[0004] Therefore, this invention provides a closed-loop system for precious metal atomization powder production to solve the problems mentioned in the background art. Utility Model Content

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A closed-loop system for precious metal atomization powder production includes a smelting furnace, an atomization tower, and a vibrating screen arranged sequentially from top to bottom.

[0007] The atomizing tower is used to atomize metal raw materials and to separate water and powder from the atomized metal.

[0008] The smelting furnace is slidably disposed above the atomizing tower for heating and smelting raw materials;

[0009] The vibrating screen is located at the bottom of the atomization tower and is used to screen out coarse residue in the finished powder.

[0010] It also includes a filtration box, a diaphragm pump and a circulating water pump. The filtration box filters moisture from the powder and is connected to a cooling water tank through the diaphragm pump and a branch pipe.

[0011] The branched pipe is also connected to a water storage tank, and the lower part of the water storage tank is connected to a circulating water pump.

[0012] A further embodiment: The cooling water tank is surrounded by multiple cooling pipes, and the cooling water tank is connected to a chiller through the multiple cooling pipes.

[0013] A further solution: The output end of the cooling water tank is equipped with a high-pressure pump, which delivers cooling water to the top of the atomizing tower.

[0014] A further solution: The output end of the circulating water pump is connected to the cooling water tank.

[0015] A further option: the atomizing tower is connected to a nitrogen gas source.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] The smelting furnace melts the metal, which then flows into an atomization tower where it is atomized into fine powder by high-pressure water. After sedimentation, the slurry flows into a vibrating screen, separating the coarse slag and transferring it to a filtration box. The filtration box filters and collects the metal powder, and then the atomized water is pumped to a cooling water tank via a diaphragm pump. After cooling, it is reused, improving the recovery rate of precious metals and reducing their loss. The diaphragm pump can provide negative pressure to promptly extract the atomized water containing trace amounts of precious metals generated during the atomization process. This water is then returned to the cooling water tank after sedimentation and filtration, allowing for the recovery of fine precious metals, thus improving the recovery rate of precious metal powder and reducing component contamination. Attached Figure Description

[0018] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of a closed-loop system for atomizing and pulverizing precious metals.

[0020] In the diagram: 1. Smelting furnace; 2. Atomizing tower; 3. Vibrating screen; 4. Filter box; 5. Diaphragm pump; 6. Cooling water tank; 7. Water storage tank; 8. Circulating water pump; 9. Chiller; 10. High-pressure pump. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model; that is, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] Please see Figure 1In this embodiment of the present invention, a closed-loop circulation system for precious metal atomization powder production includes a smelting furnace 1, an atomization tower 2, and a vibrating screen 3 arranged sequentially from top to bottom. The atomization tower 2 is used to atomize metal raw materials and to separate water from powder in the atomized metal. The smelting furnace 1 is slidably disposed above the atomization tower 2 and is used to heat and smelt the raw materials. The vibrating screen 3 is disposed at the bottom of the atomization tower 2 and is used to screen the coarse slag in the finished powder. The system also includes a filtration box 4, a diaphragm pump 5, and a circulating water pump 8. The filtration box 4 filters the water in the powder and is connected to a cooling water tank 6 through the diaphragm pump 5 and a branch pipe. The branch pipe is also connected to a water storage tank 7, and the lower part of the water storage tank 7 is connected to the circulating water pump 8.

[0024] Compared with the prior art, the present invention provides a closed-loop circulation system for precious metal atomization powder production. After melting the metal in a smelting furnace 1, the metal flows into an atomization tower 2 for high-pressure water atomization into fine powder. The settled slurry flows into a vibrating screen 3, separating the coarse slag into a filtration box 4. The filtration box 4 filters and collects the metal powder. The atomized water is then pumped to a cooling water tank 6 via a diaphragm pump 5 for cooling and reuse. This improves the precious metal recovery rate and reduces precious metal loss. The diaphragm pump 5 provides negative pressure to promptly extract atomized water containing trace amounts of precious metals generated during atomization. This water is then returned to the cooling water tank 6 after sedimentation and filtration, allowing for the recovery of fine precious metals, improving the precious metal powder recovery rate, and reducing component contamination.

[0025] In this embodiment, the branch pipe is also connected to a cooling water tank 6. The lower part of the filtration tank 4 is connected to a diaphragm pump 5. The diaphragm pump 5 is connected to a water storage tank 7. The water in the upper part of the filtration tank 4 is directly sent to the cooling water tank 6 through the branch pipe and used after cooling. The water in the lower part of the filtration tank 4 is transported to the water storage tank 7 through the diaphragm pump 5. After sedimentation, it is sent to the cooling water tank 6 and used after cooling.

[0026] Furthermore, the cooling water tank 6 is surrounded by multiple cooling pipes, and the cooling water tank 6 is connected to a chiller 9 through the multiple cooling pipes. The chiller 9 delivers cold water to the cooling water tank 6 to circulate it and cool it down.

[0027] Specifically, the output end of the cooling water tank 6 is equipped with a high-pressure pump 10, which delivers cooling water to the top of the atomizing tower 2.

[0028] In one embodiment, the system also includes a circulating water pump 8, the input end of which is connected to the bottom of the water storage tank 7, and the output end of which is connected to the cooling water tank 6, so that the entire system forms a closed water loop.

[0029] In this embodiment, the atomizing tower 2 is connected to a nitrogen gas source.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. A closed cycle system for atomizing and powdering precious metals, characterized in that, It comprises a smelting furnace (1), an atomization tower (2) and a vibrating screen (3) arranged in sequence from top to bottom; The atomization tower (2) is used for atomizing the metal raw material and separating the atomized metal from water and powder; The smelting furnace (1) is slidably arranged above the atomization tower (2) and used for heating and smelting the raw material; The vibrating screen (3) is arranged at the bottom of the atomization tower (2) and used for screening the coarse slag in the finished powder; It further comprises a filter box (4), a diaphragm pump (5) and a circulating water pump (8), the filter box (4) filters the water in the powder and is connected in communication with a cooling water tank (6) through the diaphragm pump (5) and a bifurcated pipeline; The bifurcated pipeline is further connected in communication with a water storage tank (7), and the lower part of the water storage tank (7) is connected in communication with the circulating water pump (8).

2. The closed cycle system for atomizing precious metal powder production according to claim 1, wherein, The cooling water tank (6) is circumferentially surrounded by a plurality of cooling pipelines, and the cooling water tank (6) is connected in communication with a cold water machine (9) through the plurality of cooling pipelines.

3. The closed cycle system for atomizing precious metal powder production according to claim 1, wherein, An output end of the cooling water tank (6) is provided with a high-pressure pump (10), and the high-pressure pump (10) delivers the cooling water to the top of the atomization tower (2).

4. The closed cycle system for atomizing precious metal powder production according to any one of claims 1-3, characterized in that, An output end of the circulating water pump (8) is connected in communication with the cooling water tank (6).

5. The closed cycle system for atomizing precious metal powder production according to claim 4, wherein, The atomization tower (2) is connected in communication with a nitrogen gas source.

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