Runner for producing oxygen-free copper rod

Abstract

The utility model discloses a runner for producing an oxygen-free copper rod, which belongs to the technical field of oxygen-free copper rod production equipment and comprises a runner internally provided with a conveying cavity, the top of the runner is provided with a plurality of reducing gas production mechanisms along the length direction of the runner, each reducing gas production mechanism comprises a combustion container, the combustion container is communicated with the conveying cavity, and the conveying cavity is communicated with the combustion container. The combustion container is connected with a combustion gas supply assembly and a burner; the combustion gas supply assembly comprises a ventilation hose communicated with the gas source equipment and a gas inlet hard pipe communicated with the ventilation hose, the gas inlet hard pipe is connected to one side of the combustion container, and the burner is arranged at the output end of the gas inlet hard pipe. High-temperature reducing gases such as hydrogen and carbon monoxide can be generated on the flow channel in real time and enter the flow channel to be in contact with copper liquid in the flow channel, so that the copper liquid is prevented from being oxidized; and meanwhile, the high-temperature reducing gas can transfer heat to the copper liquid, and excessive cooling of the copper liquid is prevented.

Description

Technical Field

[0001] This utility model relates to the technical field of oxygen-free copper rod production equipment, specifically a flow channel for oxygen-free copper rod production. Background Technology

[0002] Currently, there are three processes for producing copper rods: the upward drawing method, the continuous casting and rolling method, and the dip coating method. The upward drawing method involves directly drawing copper tubes from molten electrolytic copper, producing oxygen-free copper rods with an oxygen content below 20 ppm. Subsequent processing generally uses cold rolling, resulting in coarse crystals, a relatively loose structure, and poor performance. The continuous casting and rolling method involves directly casting molten copper into copper billets, followed by continuous hot rolling to produce the desired copper rods. These billets typically have an oxygen content of 250-300 ppm, making them low-oxygen copper rods. The dip coating method combines the oxygen-free characteristics of the upward drawing method with the hot rolling characteristics of continuous casting and rolling, possessing the advantages of both. To achieve this technology, protective gas plays a crucial role in its production process.

[0003] Currently, equipment used for oxygen-free copper rod production includes a melting furnace, a holding furnace, and a flow channel connecting the two. In application, copper raw material is fed into the melting furnace to melt into molten copper, which then flows through the flow channel into the holding furnace for heat preservation. Because copper is easily oxidized, existing methods to prevent oxidation of molten copper involve mixing natural gas and air in a specific ratio and performing incomplete combustion to produce reducing gases such as hydrogen and carbon monoxide, which are then supplied to the melting furnace, holding furnace, rolling mill, and cooling pipes for protection and reduction. However, oxidation of molten copper can still occur in the flow channel (especially in longer channels), and molten copper is more prone to heat loss during its flow through longer channels. Utility Model Content

[0004] This utility model provides a solution that is significantly different from existing technologies, addressing the problem that existing technologies are too simplistic. It mainly provides a flow channel for the production of oxygen-free copper rods, which solves the technical problems of copper liquid oxidation and excessive heat loss in existing flow channels mentioned in the background.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0006] A flow channel for producing oxygen-free copper rods includes a flow channel with an internal conveying chamber. The top of the flow channel is provided with a plurality of reducing gas production mechanisms along its length. Each reducing gas production mechanism includes a combustion container, which is connected to the conveying chamber. The combustion container is connected to a combustion gas supply assembly and a burner.

[0007] Furthermore, the combustion gas supply assembly includes a ventilation hose connected to the gas source equipment and an intake hard pipe connected to the ventilation hose. The intake hard pipe is connected to one side of the combustion container, and the burner is located at the output end of the intake hard pipe, with an ignition hole provided on the burner.

[0008] Furthermore, the top of the flow channel is provided with a through hole that connects the delivery chamber and the combustion container, and the through hole is provided in a one-to-one correspondence with the combustion container.

[0009] Furthermore, the flow channel includes direct current sections located in different directions and transition sections connecting each adjacent pair of direct current sections.

[0010] Furthermore, the flow channel includes a lower half-channel and an upper half-channel adapted to be mounted on the lower half-channel. The splicing ends of the lower half-channel and the upper half-channel are provided with protruding strips, and the protruding strips are provided with fastening holes for bolt connection at equal intervals along their length.

[0011] Furthermore, both the lower half of the groove and the splicing side of the upper half of the groove are provided with arc-shaped grooves.

[0012] Furthermore, multiple pairs of lifting lugs are provided along the length of both sides of the upper end of the flow channel.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This invention utilizes multiple reducing gas production mechanisms arranged along the length of the flow channel to generate high-temperature reducing gases such as hydrogen and carbon monoxide in real time. These gases enter the flow channel and contact the molten copper, preventing oxidation. Simultaneously, the high-temperature reducing gases transfer heat to the molten copper, preventing excessive heat loss. This effectively solves the problems of copper oxidation and heat loss.

[0015] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a top view of the structure of this utility model.

[0018] 1. Combustion container; 2. Flow channel; 21. First direct current section; 22. Transition section; 23. Second direct current section; 201. Lower half of the tank; 202. Upper half of the tank; 3. Inlet hard pipe; 4. Delivery chamber; 5. Lifting lug; 6. Ventilation hose; 7. Protrusion; 8. Fastening hole. Detailed Implementation

[0019] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the utility model more thorough and comprehensive.

[0020] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly associated with those skilled in the art to which this invention pertains. The terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] A flow channel for producing oxygen-free copper rods includes a flow channel 2 with an internal conveying chamber 4. The top of the flow channel 2 is provided with a plurality of reducing gas production mechanisms along its length. Each reducing gas production mechanism includes a combustion container 1, which is connected to the conveying chamber 4. The combustion container 1 is connected to a combustion gas supply assembly and a burner.

[0023] Example 1: Please refer to the appendix for details. Figure 1 - Appendix Figure 2 The flow channel 2 includes a first DC section 21 connected to the output end of the melting furnace, a second DC section 23 connected to the input end of the holding furnace, and a connecting section 22 connecting the first DC section 21 and the second DC section 23. The first DC section 21, the connecting section 22, and the second DC section 23 are all equipped with reducing gas production mechanisms.

[0024] The combustion container 1 has a triangular prism structure, and an air inlet hard pipe 3 is connected to one of its inclined surfaces. A ventilation hose 6 is connected to one side of the air inlet hard pipe 3, and the other end of the ventilation hose 6 is connected to a gas source device. The burner is located at the output end of the air inlet hard pipe 3, and an ignition hole (not shown in the figure) is opened on one side of the burner to ignite the mixed combustion gas, so that it is incompletely burned and produces reducing gases such as hydrogen and carbon monoxide.

[0025] The top of the flow channel 2 is provided with a through hole that connects the conveying chamber 4 and the combustion container 1, and the through hole is set one-to-one with the combustion container 1. The reducing gas generated in the combustion container 1 enters the conveying chamber 4 through the through hole.

[0026] In application, the gas supply equipment mixes natural gas and air at a ratio of 1:8 and then sends the mixture into the ventilation hose 6, which eventually enters the combustion container 1 through the inlet hard pipe 3. Ignition occurs through the ignition port on one side of the burner. The mixed gas undergoes incomplete combustion within the combustion container 1, producing high-temperature reducing gases such as hydrogen and carbon monoxide. These gases enter the flow channel 2 and come into contact with the molten copper, preventing oxidation of the copper. Simultaneously, the heat generated by combustion is transferred to the molten copper, preventing excessive heat loss.

[0027] Example 2: The difference between this example and Example 1 is that:

[0028] The flow channel 2 includes a lower half-channel 201 and an upper half-channel 202 adapted to be mounted on the lower half-channel 201. The splicing ends of the lower half-channel 201 and the upper half-channel 202 are provided with protruding strips 7, and the protruding strips 7 are provided with fastening holes 8 at equal intervals along their length for bolt connection. This allows the flow channel 2 to be detachably assembled.

[0029] Both the lower half of the trough 201 and the upper half of the trough 202 have arc-shaped grooves on their splicing sides, and the arc-shaped grooves of the two are spliced ​​together to form the conveying cavity 4.

[0030] Multiple pairs of lifting lugs 5 are provided on both sides of the upper end of the flow channel 2 along the length of the channel, which facilitates the hoisting and assembly of the upper half of the tank 202 and the hoisting and installation of the flow channel 2.

[0031] The rest is the same as in Example 1.

[0032] The present invention has been described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A flow channel for producing oxygen-free copper rods, comprising a flow channel (2) with an internal conveying chamber (4), characterized in that: The top of the flow channel (2) is provided with multiple reducing gas production mechanisms along its length. Each reducing gas production mechanism includes a combustion container (1), which is connected to the delivery chamber (4). The combustion container (1) is connected to a combustion gas supply assembly and a burner.

2. The flow channel for producing oxygen-free copper rods according to claim 1, characterized in that: The combustion gas supply assembly includes a ventilation hose (6) connected to the gas source equipment and an air intake hard pipe (3) connected to the ventilation hose (6). The air intake hard pipe (3) is connected to one side of the combustion container (1). The burner is located at the output end of the air intake hard pipe (3) and has an ignition hole.

3. The flow channel for producing oxygen-free copper rods according to claim 1, characterized in that: The top of the flow channel (2) is provided with a through hole that connects the conveying chamber (4) and the combustion container (1), and the through hole is provided in a one-to-one correspondence with the combustion container (1).

4. The flow channel for producing oxygen-free copper rods according to claim 1, characterized in that: The flow channel (2) includes direct current sections located in different directions and transition sections (22) connecting each adjacent two direct current sections.

5. The flow channel for producing oxygen-free copper rods according to claim 1, characterized in that: The flow channel (2) includes a lower half-groove (201) and an upper half-groove (202) adapted to be mounted on the lower half-groove (201). The splicing ends of the lower half-groove (201) and the upper half-groove (202) are provided with protrusions (7). The protrusions (7) are provided with fastening holes (8) for bolt connection at equal intervals along their length direction.

6. The flow channel for producing oxygen-free copper rods according to claim 5, characterized in that: Both the lower half of the groove (201) and the upper half of the groove (202) are provided with arc-shaped grooves.

7. The flow channel for producing oxygen-free copper rods according to claim 1, characterized in that: Multiple pairs of lugs (5) are provided on both sides of the upper end of the flow channel (2).

Images