Lead bullion refining equipment

Abstract

The utility model relates to the technical field of lead-acid battery recovery, in particular to crude lead refining equipment. Comprising a furnace body, a furnace cavity of the furnace body is horizontally divided into a first refining area and a second refining area, the first refining area is provided with a feeding port, a lead matte outlet and a slagging-off port, a cooling pipe is fixed in the lower portion of the first refining area, the second refining area is provided with a lead outlet, the first refining area is provided with a material returning port, and a blocking plate is arranged in the first refining area in a sliding mode. The baffle plate is located between the material returning opening and the slagging-off opening, a driving assembly is arranged at the upper end of the furnace body and connected with the baffle plate, a chute is fixed to the outer side of the furnace body and communicated with the material returning opening, and a filtering assembly is arranged in the chute below the lead matte outlet, the slagging-off opening and the oxidizing slag outlet. In the discharging process of lead copper matte, lead slag and oxidizing slag, lead liquid can be effectively filtered through the filter screen, the lead copper matte, the lead slag and the oxidizing slag are left on the filter screen, and the lead liquid flows back to the baffle and the furnace body through the chute.

Description

Technical Field

[0001] The utility model relates to the technical field of lead-acid battery recycling, in particular to crude lead refining equipment. Background Art

[0002] During the lead-acid battery recycling process, the recycled lead needs to be refined. At present, the main methods for removing copper from crude lead are to remove copper by melting and adding sulfur in batches in a lead melting pot, and remove the copper element in the form of copper slag; and to remove the copper element in the crude lead in the form of lead matte in a continuous copper removal furnace. For crude lead with high arsenic, antimony and tin content, arsenic, antimony and tin need to be removed after the copper removal operation is completed. The process of removing arsenic, antimony and tin from crude lead is mainly carried out in a lead melting pot, blowing oxygen into the crude lead in the lead melting pot or refining the crude lead with alkali.

[0003] The patent with the authorization announcement number CN103924098B discloses a continuous refining furnace and refining method for crude lead. In this method, crude lead flows into the molten pool from the feeding port, and the crude lead is continuously circulated and cooled by the circulating cooling device. The burner above the furnace top continuously heats the molten pool, so that the temperature of the upper part of the molten pool is higher than that of the lower part. The copper element in the crude lead is precipitated and reacts on the surface of the molten pool to form lead matte, which is separated from the crude lead. The lead matte can be directly sent to the copper blowing system to recover the copper element.

[0004] The patent document with application number CN202220792937.7 and titled "Short-process crude lead refining equipment" discloses a method that can achieve efficient removal of copper, arsenic, antimony, and tin elements in crude lead in one furnace, and directly produce lead liquid that meets the requirements of anode plate composition. In the first refining zone, the crude lead can be pre-removed of copper elements by refining and copper removal, and the copper elements are separated from the lead liquid in the form of lead matte. In this process, the setting of the first heating unit and the cooling unit ensures the temperature gradient between the upper and lower parts of the molten pool during the refining and copper removal process, so that the copper elements and copper sulfides of the crude lead in the lower part of the molten pool float to the surface of the molten pool to form lead matte, and the copper-de-coppered crude lead is located in the lower part of the molten pool to achieve copper-lead separation. The copper-de-coppered crude lead can enter the second refining zone through the bottom channel, and complete oxidation under the action of oxygen supplied by the oxygen supply unit. In this process, arsenic, antimony, and tin elements can be oxidized into slag, and because arsenic, antimony, and tin are easily volatile when oxidized, some of them can enter the flue gas, and some of them can enter the oxidized slag for removal. The flue gas can enter the subsequent flue gas treatment unit for treatment. Therefore, by using this short-process crude lead refining equipment, the impurity elements of copper, arsenic, antimony and tin in crude lead can be efficiently removed in one furnace, and lead liquid that meets the requirements of the anode plate can be directly produced. However, during the discharge of lead matte, the discharge of oxide slag and the slag removal process, part of the lead liquid will be discharged from the furnace body. The lead liquid discharged from the furnace body will be mixed with lead matte, lead slag and oxide slag, which makes it inconvenient to separate the lead liquid, thereby increasing the loss of lead liquid. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a crude lead refining device which can effectively filter the lead liquid and make the lead liquid flow back to the furnace body during the discharge process of lead matte, lead slag and oxide slag.

[0006] In order to achieve the above purpose, the technical solution provided by the utility model is:

[0007] A crude lead refining device comprises a furnace body, wherein a furnace chamber of the furnace body is horizontally divided into a first refining zone and a second refining zone, the first refining zone and the second refining zone are connected at the bottom, a burner is installed at the top of each of the first refining zone and the second refining zone, the first refining zone has a feed inlet, a lead matte outlet and a slag removal outlet, a cooling pipe is fixed in the lower part of the first refining zone, the second refining zone is provided with a lead outlet, an oxide slag outlet and an oxygen supply unit, the first refining zone is provided with a return port, the height of the return port is lower than the height of the feed inlet, the height of the lead matte outlet, the height of the slag removal outlet and the height of the oxide slag outlet The height of the opening, a baffle is slidably arranged in the first refining zone, the baffle is located between the return opening and the slag removal opening, the baffle separates the first refining zone into two independent cavities, the return opening is connected with one of the cavities, the slag removal opening, the lead matte outlet and the feed opening are connected with the other cavity, a driving assembly is arranged on the upper end of the furnace body, the driving assembly is connected with the baffle, a chute is fixed on the outside of the furnace body, the chute is located below the lead matte outlet, the slag removal opening and the oxide slag outlet, the chute is connected with the return opening, a filtering assembly is arranged in the chute below the lead matte outlet, the slag removal opening and the oxide slag outlet.

[0008] Specifically, a smoke exhaust pipe is fixedly connected above the furnace body, and the smoke exhaust pipe is connected with the first refining area and the second refining area.

[0009] Specifically, a partition is provided in the furnace body, and the partition horizontally divides the furnace cavity of the furnace body into a first refining zone and a second refining zone, and a passage connecting the first refining zone and the second refining zone is provided below the partition.

[0010] Specifically, the height of the oxide slag outlet is greater than the height of the lead outlet, the height of the lead matte outlet is greater than the height of the lead outlet, and the height of the slag removal outlet is greater than the height of the lead matte outlet.

[0011] Specifically, the oxygen supply unit is an oxygen blowing tube.

[0012] Specifically, two guide rails are fixed in the first refining area, and the blocking plates are slidably arranged in the guide rails.

[0013] Specifically, the driving assembly includes a cylinder fixed to the upper end of the furnace body, a connecting rod is fixed on the telescopic rod of the cylinder, a lifting rod is fixed on the connecting rod, the lifting rod passes through the top plate of the furnace body, the lifting rod is slidably connected to the top plate of the furnace body, and the lower end of the lifting rod is fixedly connected to the upper end of the baffle.

[0014] Specifically, the filter assembly includes a filter screen, which includes an integrally formed arc portion and a straight portion. The arc portion of the filter screen is fixedly connected to the furnace body, the straight portion of the filter screen is fixedly connected to the chute, and the upper end of the straight portion of the filter screen is flush with the upper end of the chute.

[0015] Specifically, an inner rod is fixed in the chute, and the inner rod is fixedly connected to the filter screen.

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

[0017] 1. The utility model can effectively filter the lead liquid through the filter screen during the discharge process of lead matte, lead slag and oxide slag. The lead matte, lead slag and oxide slag remain on the filter screen, and the lead liquid flows back to the cavity formed by the baffle plate and the furnace body through the chute, which can reduce the loss of lead liquid during the slag discharge process.

[0018] 2. The filter screen includes an arc-shaped portion and a straight portion. The arc-shaped portion can increase the capacity of lead matte, lead slag and oxide slag. By setting the straight portion, it is convenient to scrape out the lead matte, lead slag and oxide slag in the arc-shaped portion, thereby facilitating discharge.

[0019] 3. The baffle plate can move up and down, which can lower the lead liquid level in the first refining zone, and then make the baffle plate move upward. After the baffle plate moves upward, the lead liquid in the cavity between the baffle plate and the furnace body can enter the first refining zone, ensuring that the lead liquid in the cavity between the baffle plate and the furnace body can be discharged, preventing the lead liquid in the cavity between the baffle plate and the furnace body from overflowing from the return port due to excessively high level. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the chute of the utility model.

[0021] Figure 2 It is a schematic diagram of the internal structure of the utility model.

[0022] Figure 3 A cross-sectional view of the chute.

[0023] Figure 4 It is a schematic diagram of the cross-sectional structure of the chute and the filter.

[0024] The names of the parts in the attached drawings are:

[0025] 1 Furnace body

[0026] 101 First Refining Area

[0027] 102 Second Refining Area

[0028] 2 Burners

[0029] 3 Exhaust pipe

[0030] 4 Feed port

[0031] 5 Cylinders

[0032] 6 Connecting rod

[0033] 7 Lifting rod

[0034] 8 Return port

[0035] 9 Slag removal port

[0036] 10 Lead Matte Export

[0037] 11 Oxidation slag outlet

[0038] 12 Chute

[0039] 13 Inner rod

[0040] 14 Filter

[0041] 141 Straight part

[0042] 142 arc

[0043] 15 Lead outlet

[0044] 16 Oxygen blowing tube

[0045] 17 Bulkhead

[0046] 18 Block plate

[0047] 19 Cooling pipe

[0048] 20 Guide rails. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0050] Example 1: Reference Figure 1-Figure 3 As shown, a crude lead refining device includes a furnace body 1, wherein a furnace chamber of the furnace body 1 is horizontally divided into a first refining zone 101 and a second refining zone 102, and the first refining zone 101 and the second refining zone 102 are connected at the bottom.

[0051] Specifically, a partition 17 is provided in the furnace body 1, and the partition 17 horizontally divides the furnace chamber of the furnace body 1 into a first refining zone 101 and a second refining zone 102, and a passage connecting the first refining zone 101 and the second refining zone 102 is provided below the partition 17. The lead liquid at the lower part of the first refining zone 101 and the second refining zone 102 can flow, and the partition 17 can isolate the surface of the first refining zone 101 and the second refining zone 102, so as to respectively recover the lead matte in the first refining zone 101 and the oxidized slag in the second refining zone 102.

[0052] The first refining zone 101 is used to refine and remove copper from crude lead to produce lead matte and decopperized crude lead. The second refining zone 102 is used to oxidize and remove arsenic, antimony and tin from the decopperized crude lead to form softened lead.

[0053] Burners 2 are installed on the upper parts of the first refining area 101 and the second refining area 102. The burners 2 can ensure the temperature in the furnace body 1 and heat the lead liquid in the furnace body 1.

[0054] A smoke exhaust pipe 3 is fixedly connected to the top of the furnace body 1 , and the smoke exhaust pipe 3 is connected to the first refining zone 101 and the second refining zone 102 .

[0055] The first refining zone 101 has a feed port 4, a lead matte outlet 10 and a slag removal port 9. A cooling pipe 19 is fixed in the lower part of the first refining zone 101. The cooling pipe 19 is connected to the cooler. The cooperation between the cooling pipe 19 and the cooler can form a temperature gradient above and below the molten pool in the furnace cavity of the entire furnace body 1, making the copper removal refining more efficient.

[0056] In the actual production process, a small amount of copper will inevitably react with arsenic, antimony and tin elements to form scum, which can float on the surface of the molten pool in the first refining zone 101. The first refining zone 101 is provided with a slag removal port 9. The slag removal port 9 can be used to regularly clean up this part of the scum.

[0057] The second refining zone 102 is provided with a lead outlet 15 , an oxide slag outlet 11 and an oxygen supply unit. The oxygen supply unit is an oxygen blowing pipe 16 .

[0058] The surface of the molten pool in the first refining zone 101 is a lead matte layer, and the lower part is decopperized crude lead. The surface of the molten pool in the second refining zone 102 is an oxide slag layer, and the lower part is softened lead liquid. In order to facilitate the discharge of lead matte and oxide slag, and to facilitate the discharge of lead liquid, the height of the oxide slag outlet 11 is greater than the height of the lead outlet 15, the height of the lead matte outlet 10 is greater than the height of the lead outlet 15, and the height of the slag removal outlet 9 is greater than the height of the lead matte outlet 10.

[0059] The first refining zone 101 is provided with a return port 8 , the height of which is lower than the height of the feed port 4 , the height of the lead matte outlet 10 , the height of the slag removal port 9 and the height of the oxide slag outlet 11 .

[0060] A baffle 18 is slidably disposed in the first refining zone 101. Specifically, two guide rails 20 are fixed in the first refining zone 101, and the baffle 18 is slidably disposed in the guide rails 20. The baffle 18 is located between the material return port 8 and the slag removal port 9.

[0061] The baffle 18 separates the first refining zone 101 into two independent chambers. The return port 8 is connected to one of the chambers. The slag removal port 9, the lead matte outlet 10 and the feed port 4 are connected to the other chamber. A drive assembly is provided at the upper end of the furnace body 1, and the drive assembly is connected to the baffle 18.

[0062] The driving assembly includes a cylinder 5 fixed to the upper end of the furnace body 1, a connecting rod 6 is fixed on the telescopic rod of the cylinder 5, a lifting rod 7 is fixed on the connecting rod 6, the lifting rod 7 passes through the top plate of the furnace body 1, the lifting rod 7 is slidably connected to the top plate of the furnace body 1, and the lower end of the lifting rod 7 is fixedly connected to the upper end of the baffle 18.

[0063] A chute 12 is fixed on the outside of the furnace body 1. The chute 12 is located below the lead copper matte outlet 10, the slag removal outlet 9 and the oxide slag outlet 11. The chute 12 is connected to the return material port 8. A filtering component is arranged in the chute 12 below the lead copper matte outlet 10, the slag removal outlet 9 and the oxide slag outlet 11.

[0064] The filter assembly is a filter screen 14. An inner rod 13 is fixed in the chute 12, and the inner rod 13 is fixedly connected to the filter screen 14. The inner rod 13 can enhance the stability and pressure resistance of the filter screen 14 in the chute 12.

[0065] During the discharge of lead matte, oxidized slag and lead slag, the lead liquid mixed with lead matte, oxidized slag and lead slag is discharged from the furnace body 1. The lead matte, oxidized slag and lead slag fall onto the filter screen 14, and the lead liquid passes through the filter screen 14 and enters the chute 12. The lead liquid in the chute 12 can enter the cavity between the baffle 18 and the furnace body 1 through the return port 8, thereby realizing the reflux of the lead liquid.

[0066] The cylinder 5 is started, and the cylinder 5 can drive the baffle 18 to move up and down through the connecting rod 6 and the lifting rod 7. The lead liquid in the furnace body 1 is discharged through the lead outlet 15, and the lead liquid level in the first refining area 101 is lowered. Then the baffle 18 is moved upward. After the baffle 18 moves upward, the lead liquid in the cavity between the baffle 18 and the furnace body 1 can enter the first refining area 101, ensuring that the lead liquid in the cavity between the baffle 18 and the furnace body 1 can be discharged, and preventing the lead liquid in the cavity between the baffle 18 and the furnace body 1 from overflowing from the return port 8 due to excessively high liquid level.

[0067] Embodiment 2: Based on Embodiment 1, refer to Figure 4 As shown, the filter screen 14 includes an integrally formed arc portion 142 and a straight portion 141 , the arc portion 142 of the filter screen 14 is fixedly connected to the furnace body 1 , the straight portion 141 of the filter screen 14 is fixedly connected to the chute 12 , and the upper end of the straight portion 141 of the filter screen 14 is flush with the upper end of the chute 12 .

[0068] The arc-shaped portion 142 can increase the capacity of lead matte, lead slag and oxide slag. By providing the straight portion 141, it is convenient to scrape out the lead matte, lead slag and oxide slag in the arc-shaped portion 142, thereby facilitating discharge.

[0069] In order to ensure the fluidity of the lead liquid in the chute 12, a heating pipe can be fixed at the lower end of the chute 12, and the chute 12 can be heated by the heating pipe to prevent the lead liquid entering the chute 12 from solidifying.

[0070] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A crude lead refining device, comprising a furnace body (1), wherein a furnace chamber of the furnace body (1) is horizontally divided into a first refining zone (101) and a second refining zone (102), the first refining zone (101) and the second refining zone (102) are connected at the bottom, a burner (2) is installed at the top of the first refining zone (101) and the second refining zone (102), the first refining zone (101) has a feed inlet (4), a lead matte outlet (10) and a slag removal outlet (9), a cooling pipe (19) is fixed in the lower part of the first refining zone (101), and the second refining zone (102) is provided with a lead outlet (15), an oxide slag outlet (11) and an oxygen supply unit, characterized in that: The first refining zone (101) is provided with a return port (8), the height of the return port (8) is lower than the height of the feed port (4), the height of the lead matte outlet (10), the height of the slag removal port (9) and the height of the oxide slag outlet (11), a baffle (18) is slidably provided in the first refining zone (101), the baffle (18) is located between the return port (8) and the slag removal port (9), the baffle (18) divides the first refining zone (101) into two independent cavities, the return port (8) is connected to one of the cavities, and the slag removal port (9) is connected to the first refining zone (101). (9), the lead copper matte outlet (10) and the feed port (4) are connected to another cavity, a driving assembly is arranged at the upper end of the furnace body (1), the driving assembly is connected to the baffle plate (18), a chute (12) is fixed on the outside of the furnace body (1), the chute (12) is located below the lead copper matte outlet (10), the slag removal port (9) and the oxide slag outlet (11), the chute (12) is connected to the return port (8), and a filtering assembly is arranged in the chute (12) below the lead copper matte outlet (10), the slag removal port (9) and the oxide slag outlet (11).

2. A crude lead refining equipment according to claim 1, characterized in that: A smoke exhaust pipe (3) is fixedly connected above the furnace body (1), and the smoke exhaust pipe (3) is connected to the first refining zone (101) and the second refining zone (102).

3. A crude lead refining equipment according to claim 1, characterized in that: A partition (17) is arranged inside the furnace body (1), and the partition (17) horizontally divides the furnace chamber of the furnace body (1) into a first refining zone (101) and a second refining zone (102). A passage connecting the first refining zone (101) and the second refining zone (102) is provided below the partition (17).

4. A crude lead refining equipment according to claim 1, characterized in that: The height of the oxide slag outlet (11) is greater than the height of the lead outlet (15), the height of the lead matte outlet (10) is greater than the height of the lead outlet (15), and the height of the slag removal outlet (9) is greater than the height of the lead matte outlet (10).

5. A crude lead refining equipment according to claim 1, characterized in that: The oxygen supply unit is an oxygen blowing pipe (16).

6. A crude lead refining equipment according to claim 1, characterized in that: Two guide rails (20) are fixed in the first refining zone (101), and the blocking plate (18) is slidably arranged in the guide rails (20).

7. A crude lead refining equipment according to claim 1, characterized in that: The driving assembly comprises a cylinder (5) fixed to the upper end of the furnace body (1); a connecting rod (6) is fixed to the telescopic rod of the cylinder (5); a lifting rod (7) is fixed to the connecting rod (6); the lifting rod (7) passes through the top plate of the furnace body (1); the lifting rod (7) is slidably connected to the top plate of the furnace body (1); and the lower end of the lifting rod (7) is fixedly connected to the upper end of the baffle (18).

8. A crude lead refining equipment according to claim 1, characterized in that: The filter assembly comprises a filter screen (14), the filter screen (14) comprising an integrally formed arc-shaped portion (142) and a straight portion (141), the arc-shaped portion (142) of the filter screen (14) being fixedly connected to the furnace body (1), the straight portion (141) of the filter screen (14) being fixedly connected to the chute (12), and the upper end of the straight portion (141) of the filter screen (14) being flush with the upper end of the chute (12).

9. A crude lead refining equipment according to claim 8, characterized in that: An inner rod (13) is fixed inside the chute (12), and the inner rod (13) is fixedly connected to the filter screen (14).

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