Anode scrap treatment system and method

Abstract

The invention discloses an anode scrap treatment system and method.The anode scrap treatment system comprises a flash converting furnace, a feeding assembly and a control module, the flash converting furnace is provided with a feeding port and a discharging port, the feeding assembly is provided with a feeding channel, an inlet of the feeding channel is connected with a material source, an outlet of the feeding channel is connected with the feeding port, and the discharging port is connected with the control module; the feeding assembly is connected with the flash converting furnace, so that the to-be-treated anode scrap is conveyed into the flash converting furnace through the feeding channel, the anode scrap is subjected to heat treatment by utilizing the surplus of the flash converting furnace, the obtained product is discharged through the discharging opening, the control module is connected with the flash converting furnace and the feeding assembly, and the control module adjusts the surplus heat of the flash converting furnace according to the material amount conveyed by the feeding assembly. According to the invention, the anode scrap is directly treated by the flash converting furnace used in the main smelting process, and 1-2 industrial furnaces in the anode scrap treatment process of the related technology can be replaced by only one set of feeding assembly, so that the additional field and equipment investment is reduced, and the investment and maintenance cost is saved. In addition, smelting reaction heat is fully utilized, and energy consumption of the system is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of copper smelting, and in particular to a residual electrode processing system and method. Background Art

[0002] The flash converting process is a continuous converting process developed and applied based on the one-step copper smelting process of the flash converting furnace. It integrates and simplifies multiple steps in the traditional copper smelting process and is mainly completed in a closed system through the flash converting furnace. In order to continuously meet production needs, the flash copper smelting process technology has gradually developed into the "double flash" copper smelting process technology.

[0003] In the above-mentioned process technology, the treatment of residual anodes is the last step of copper smelting. In the related technology, the residual anodes are produced by electrolysis of anode plates in the electrolysis workshop. Most of the "double flash" copper smelters use vertical furnaces for melting when treating the residual anodes, and then send them to the holding furnace for temporary storage, and finally cast them into anode plates through the disc casting machine shared with the anode furnace. There are also tilting furnaces for treating the residual anodes, and equipped with independent disc casting machines. Alternatively, an NGL furnace is used, and the NGL furnace is arranged in parallel with the anode furnace, and a disc casting machine is shared.

[0004] However, a separate industrial furnace is required to melt the anode butts when processing them. In order to share the casting machine with the anode furnace, an additional holding furnace is required to temporarily store the copper liquid. This makes the anode butt treatment system more complicated, with large investments in site and equipment, high maintenance and operation costs, and high labor intensity for workers. Summary of the invention

[0005] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0006] To this end, an embodiment of the present invention provides a residual anode treatment system, which has the characteristics of low production cost and high energy utilization rate.

[0007] The residual anode processing system of the embodiment of the present invention comprises:

[0008] A flash converting furnace, wherein the flash converting furnace has a feed inlet and a discharge inlet;

[0009] A feeding assembly, wherein the feeding assembly has a feeding channel, an inlet of the feeding channel is connected to a material source, and an outlet of the feeding channel is connected to the feeding port, so that the anode butts to be treated are transported to the flash converting furnace through the feeding channel, and the anode butts are treated with the surplus heat of the flash converting furnace and the obtained products are discharged through the discharge port;

[0010] A control module is connected to the flash converting furnace and the feed assembly, and the control module adjusts the surplus heat of the flash converting furnace according to the amount of material delivered by the feed assembly.

[0011] The anode scrap treatment system of the embodiment of the present invention utilizes the flash converting furnace used in the main smelting process of the smelter to treat the anode scrap. There is no need to separately configure an industrial furnace and ancillary systems for the anode scrap treatment. Only a set of feeding components needs to be set up to directly add the anode scrap to the flash converting furnace, thereby reducing the site investment, equipment investment and maintenance and operation costs required for a special system in the related technology, and reducing labor intensity.

[0012] In addition, the flash converting furnace's converting reaction heat (surplus heat) is fully utilized to process the anode scraps, improve energy utilization, and save system energy consumption.

[0013] In some embodiments, the feeding assembly includes a vertical conveying device, a silo and a horizontal conveying device. The silo and the horizontal conveying device are arranged on the top of the flash refining furnace. The vertical conveying device is connected to the silo. The vertical conveying device is used to transport materials on the ground to the silo. The silo and the horizontal conveying device are connected, and the horizontal conveying device is connected to the feed port of the flash refining furnace to transport the materials in the silo to the flash refining furnace through the horizontal conveying device.

[0014] In some embodiments, the feeding assembly further includes a discharging device, and the discharging device is disposed between the silo and the horizontal conveying device, so that the silo supplies the material in the silo to the horizontal conveying device through the discharging device.

[0015] In some embodiments, the feeding assembly further comprises a chute, and the horizontal conveying device is connected to the feed port of the flash converting furnace via the chute arranged in the vertical direction.

[0016] In some embodiments, the vertical conveying device, the silo, the discharging device, the horizontal conveying device and the chute together constitute a feeding channel of the feeding assembly.

[0017] In some embodiments, the vertical conveying device is a straight section elevator.

[0018] In some embodiments, the horizontal conveying device is a mobile reversible belt conveyor.

[0019] In some embodiments, the discharging device is a vibrating feeder.

[0020] An embodiment of the present invention further provides a method for treating residual poles, and the method for treating residual poles is used in the residual pole treating system described in any one of the above embodiments.

[0021] The residual anode treatment method of the embodiment of the present invention includes:

[0022] The anode butts to be processed are fed into the flash converting furnace by using the feeding assembly, and the surplus heat of the flash converting furnace is adjusted to a preset value.

[0023] In some embodiments, the excess heat is adjusted by adjusting the oxygen enrichment concentration of the process air of the flash converting furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Schematic diagram of a residual anode treatment system according to an embodiment of the present invention.

[0025] Figure 2 It is a partial schematic diagram of a residual anode treatment system according to an embodiment of the present invention.

[0026] Reference numerals:

[0027] 1-flash refining furnace, 2-feeding assembly, 21-vertical conveying device, 22-bin, 23-horizontal conveying device, 24-discharging device, 25-chute. DETAILED DESCRIPTION

[0028] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0029] The residual anode treatment system according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0030] like Figure 1 and Figure 2 As shown, the residual anode treatment system of the embodiment of the present invention includes: a flash refining furnace 1, a feeding assembly 2 and a control module (not shown in the figure, which can be understood as a physical control system or a production organization activity or both).

[0031] Among them, the anode scrap treatment system of the embodiment of the present invention utilizes the flash converting furnace 1 used in the main smelting process of the smelter to treat the anode scrap, and there is no need to separately configure an industrial furnace and ancillary systems for the anode scrap treatment. Only a set of feeding components 2 is required to directly add the anode scrap to the flash converting furnace 1, which reduces the site investment, equipment investment and maintenance and operation costs required for a special system in the related technology, and reduces the labor intensity.

[0032] Optionally, the flash converting furnace 1 has a feed port and a discharge port. The feed assembly 2 has a feed channel, the inlet of the feed channel is connected to a material source, and the outlet of the feed channel is connected to the feed port. The anode butts to be processed are transported to the flash converting furnace 1 through the feed channel, and the anode butts are melted by utilizing the surplus heat of the flash converting furnace 1 during the converting process. The obtained product (for example, crude copper) is discharged through the discharge port and sent to the refining section of the smelter for subsequent processing.

[0033] That is, the process of the anode scrap treatment system of the embodiment of the present invention is to add the anode scrap into the flash refining furnace 1 through the feeding assembly 2, and heat is provided by the combustion of natural gas and oxygen-enriched air. The crude copper obtained after melting is discharged through the discharge port and sent to the refining section.

[0034] Therefore, the blowing reaction heat (surplus heat) of the flash blowing furnace 1 is fully utilized to achieve the treatment of the anode scraps, improve the energy utilization rate, and save system energy consumption.

[0035] In addition, the control module is a processing module in the original control system of the smelter. The control module is connected to the flash converting furnace 1 and the feed assembly 2 through a circuit, so as to adjust the surplus heat of the flash converting furnace 1 according to the amount of material delivered by the feed assembly 2.

[0036] For example, take a flash converting furnace that processes 500,000 tons of cold copper matte with a grade of 69% per year, with a reaction tower of φ5.2m×7.87m and a molten pool area of ​​23m×8m as an example. When the oxygen-enriched concentration of the process air is 80%, the anode waste treatment capacity is 0; when the oxygen-enriched concentration of the process air is 85%, the excess heat is 0.74GJ / h and the anode waste treatment capacity is 1.17t / h; when the oxygen-enriched concentration of the process air is 90%, the excess heat is 1.73GJ / h and the anode waste treatment capacity is 2.72t / h; when the oxygen-enriched concentration of the process air is 95%, the excess heat is 2.61GJ / h and the anode waste treatment capacity is 4.11t / h.

[0037] It is understandable that the oxygen-enriched concentration of the process air is adjusted according to the actual amount of anode scraps to be processed, so as to ensure that the heat of the smelting reaction is fully utilized to effectively process the anode scraps and improve the production efficiency of the system.

[0038] In some embodiments, Figure 1 and Figure 2 As shown, the feeding assembly 2 includes a vertical conveying device 21, a silo 22 and a horizontal conveying device 23.

[0039] It should be noted that, since the flash converting furnace 1 has a certain height, the anode scraps are produced by electrolysis in the electrolysis workshop, and the anode scraps need to be transported from the ground to the top of the flash converting furnace 1 , and then added into the flash converting furnace 1 .

[0040] Therefore, the vertical conveying device 21 is arranged on one side of the flash converting furnace 1, and the silo 22 and the horizontal conveying device 23 are arranged on the top of the flash converting furnace 1. The vertical conveying device 21 is connected to the silo 22, and the vertical conveying device 21 is used to transport the materials on the ground to the silo 22. The silo 22 is connected to the horizontal conveying device 23, and the horizontal conveying device 23 is connected to the feed port of the flash converting furnace 1, and then the horizontal conveying device 23 is used to add the materials in the silo 22 into the flash converting furnace 1 through the feed port.

[0041] It is understandable that the function of the silo 22 is to provide a material preparation area and buffer area for the horizontal conveying device 23. This ensures the stability and safety of the horizontal conveying device 23 during startup and operation, and avoids the impact of the production efficiency on the horizontal conveying device 23 caused by the unstable material supply.

[0042] Optionally, the vertical conveying device 21 is a straight section elevator, which is used to first deliver the material into the silo 22. Since the straight section elevator has no transition section, the material does not need to change direction during the lifting process, so a higher conveying efficiency can be achieved. In addition, it can be arranged more closely to the flash converting furnace 1, improve space utilization, and can adapt to environments with limited space.

[0043] The horizontal conveying device 23 is a mobile reversible belt conveyor, which is horizontally arranged on the top of the flash converting furnace 1. It also has no complicated steering equipment and is more closely arranged to the flash converting furnace 1. It cooperates with the straight section elevator to realize material transportation into the flash converting furnace 1, further improving space utilization and enabling the feeding assembly 2 to adapt to environments with limited space.

[0044] In some embodiments, Figure 1 and Figure 2 As shown, the feeding assembly 2 further includes a discharging device 24 , which is disposed between the silo 22 and the horizontal conveying device 23 , so that the silo 22 supplies the material in the silo 22 to the horizontal conveying device 23 through the discharging device 24 .

[0045] It can be understood that the material in the silo 22 is supplied to the horizontal conveying device 23 through the discharging device 24. The discharging device 24 can help the material to flow out of the silo 22 smoothly, preventing material blockage caused by poor material fluidity or improper design of the silo 22.

[0046] Moreover, the discharge device 24 can realize uniform feeding of materials, ensure that the horizontal conveying device 23 can stably receive materials, and improve the conveying efficiency. The discharge device 24 can control the flow rate of materials as needed to match the conveying capacity of the horizontal conveying device 23 to avoid overloading the horizontal conveying device 23 due to excessive materials.

[0047] Optionally, the discharging device 24 is a vibrating feeder, which can be adapted to various types of materials, whether powder, granular or bulk materials, can be conveyed by the vibrating feeder. In addition, the vibrating feeder has a compact structure and a small footprint, and can be better arranged and installed in an environment with limited space.

[0048] In some embodiments, Figure 1 and Figure 2As shown, the feeding assembly 2 further includes a chute 25, and the horizontal conveying device 23 is connected to the feeding port of the flash refining furnace 1 through the chute 25 arranged in the vertical direction.

[0049] It is understandable that by providing a chute 25 between the horizontal conveying device 23 and the flash converting furnace 1, the material can be transported into the flash converting furnace 1, thereby improving the material transportation efficiency. If the chute 25 is not provided and the material is directly transported by the horizontal conveyor, the material has a certain speed and cannot fall accurately into the feed port, resulting in the material being scattered on the top of the flash converting furnace 1, causing the problem of increased labor intensity.

[0050] In summary, the vertical conveying device 21, the silo 22, the discharging device 24, the horizontal conveying device 23 and the chute 25 together constitute the feeding channel of the feeding assembly 2, so that the anode scraps can be directly and effectively added to the flash refining furnace 1. The entire conveying design structure is simple and easy to maintain.

[0051] The following describes a method for treating residual anodes according to an embodiment of the present invention.

[0052] The residual anode treatment method of the embodiment of the present invention is used in the residual anode treatment system in any one of the above embodiments.

[0053] The residual anode treatment method of the embodiment of the present invention includes:

[0054] Firstly, the feed assembly 2 is constructed according to the size of the flash converting furnace 1 in the smelter to ensure a reasonable layout.

[0055] Then, the anode butts to be processed are added into the flash converting furnace 1 by using the feeding assembly 2, and the excess heat of the flash converting furnace 1 is adjusted to a preset value. The excess heat of the converting process is used to melt the anode butts, and the obtained product is discharged through the discharge port and sent to the refining section.

[0056] Therefore, the anode scrap treatment method of the embodiment of the present invention can directly process the anode scrap by the flash converting furnace 1 used in the main smelting process, and only one set of feeding assembly 2 can replace 1-2 industrial furnaces in the anode scrap treatment process of the related art, thereby reducing the additional site and equipment investment, streamlining the anode scrap treatment system, saving investment and maintenance costs, and improving production efficiency. In addition, the smelting reaction heat is fully utilized to save the energy consumption of the system.

[0057] In some embodiments, the excess heat is adjusted by adjusting the oxygen concentration of the process air of the flash converting furnace 1 .

[0058] It is understandable that when the amount of anode scrap treatment increases, the excess heat of the flash refining furnace 1 is increased by increasing the oxygen-enriched concentration of the process air, thereby improving the efficiency of the anode scrap treatment and ensuring the overall production efficiency.

[0059] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0060] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0061] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0062] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0063] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0064] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A residual anode treatment system, characterized in that: include: A flash converting furnace, wherein the flash converting furnace has a feed inlet and a discharge inlet; A feeding assembly, wherein the feeding assembly has a feeding channel, an inlet of the feeding channel is connected to a material source, and an outlet of the feeding channel is connected to the feeding port, so that the anode butts to be treated are transported to the flash converting furnace through the feeding channel, and the anode butts are treated with the surplus heat of the flash converting furnace and the obtained products are discharged through the discharge port; A control module is connected to the flash converting furnace and the feed assembly, and the control module adjusts the surplus heat of the flash converting furnace according to the amount of material delivered by the feed assembly.

2. The residual anode treatment system according to claim 1, characterized in that: The feeding assembly includes a vertical conveying device, a silo and a horizontal conveying device. The silo and the horizontal conveying device are arranged on the top of the flash refining furnace. The vertical conveying device is connected to the silo. The vertical conveying device is used to transport materials on the ground to the silo. The silo and the horizontal conveying device are connected, and the horizontal conveying device is connected to the feed port of the flash refining furnace to transport the materials in the silo to the flash refining furnace through the horizontal conveying device.

3. The residual anode treatment system according to claim 2, characterized in that: The feeding assembly also includes a discharging device, which is arranged between the silo and the horizontal conveying device, so that the silo supplies the material in the silo to the horizontal conveying device through the discharging device.

4. The residual anode treatment system according to claim 3, characterized in that: The feeding assembly further comprises a chute, and the horizontal conveying device is connected to the feeding port of the flash refining furnace via the chute arranged in the vertical direction.

5. The residual anode treatment system according to claim 4, characterized in that: The vertical conveying device, the silo, the discharging device, the horizontal conveying device and the chute together constitute a feeding channel of the feeding assembly.

6. The residual anode treatment system according to claim 2, characterized in that: The vertical conveying device is a straight section elevator.

7. The residual anode treatment system according to claim 2, characterized in that: The horizontal conveying device is a mobile reversible belt conveyor.

8. The residual anode treatment system according to claim 3, characterized in that: The discharging device is a vibrating feeder.

9. A method for treating residual poles, characterized in that: The anode residual processing method is used in the anode residual processing system according to any one of claims 1 to 8, and the anode residual processing method comprises: The anode butts to be processed are fed into the flash converting furnace by using the feeding assembly, and the surplus heat of the flash converting furnace is adjusted to a preset value.

10. The method for treating residual anodes according to claim 9, characterized in that: The excess heat is adjusted by adjusting the oxygen enrichment concentration of the process air of the flash converting furnace.

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