Metal dust recovery system

Abstract

The utility model discloses a metal dust recovery system, which comprises a crushing device, a travelling crane and a ladle, the travelling crane is provided with the ladle through a connecting seat, the blanking end of the crushing device is provided with a multi-stage screening device, and the multi-stage screening device screens out large crushed aggregates, qualified crushed aggregates and alloy powder. Alloy powder is fed into the powder bin through the powder chute, the movable bin is assembled on the traveling crane, the powder bin is provided with a discharging device A, the movable bin can receive the alloy powder of the powder bin, the movable bin is provided with a discharging pipe, and the movable bin is provided with a discharging device B. According to the metal dust recovery system, through the multi-stage screening device, alloy dust recovery and storage and crane loading of the material bin, alloy powder is transferred to the material bin, discharged through the discharging device B, fused with high-temperature alloy and completely flows to the whole pouring disc to form blocky alloy, the powder rate is reduced in the finished product crushing process, and the finished product crushing efficiency is improved. And meanwhile, the powder utilization rate is increased in the production link, and the purposes and ways of saving energy and improving efficiency are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of metal smelting and processing, in particular to a metal dust recovery system. Background Art

[0002] The ore-fired furnace (electric furnace) used to produce silicon-manganese alloy adopts the slag smelting method. In the production of manganese-silicon alloy, the product density is 7.44 t / m3 and the loose density is about 2.5t / m3, which leads to the high brittleness of the manganese-silicon alloy. In the process of crushing and screening the finished product, the use of mechanical equipment such as jaw crushers, low-speed kneading crushers and double-layer multi-frequency screens results in a high powder rate in the finished product.

[0003] In the production of manganese silicon alloy products, reducing the powder rate in the mechanical crushing and packaging links of manganese silicon alloy and improving the use of powder are topics that must be controlled in production. Starting from the powder rate at each link, the powder rate of the finished product is reduced, thereby achieving the production goal of energy saving and efficiency improvement. Starting from both the process and equipment aspects, constantly seeking to reduce the powder rate in the finished product crushing process, and at the same time seeking to improve the powder use rate in the production link is the goal and way to achieve energy saving and efficiency improvement. To this end, this application proposes a manganese silicon alloy powder recovery equipment. Utility Model Content

[0004] The purpose of the present invention is to provide a metal dust recovery system to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A metal dust recovery system includes crushing equipment, a crane and a ladle. The crane is mounted on the ladle via a connecting seat. The discharge end of the crushing equipment is provided with a multi-stage screening device. The multi-stage screening device screens out large pieces of crushed material, qualified pieces of crushed material and alloy powder. The alloy powder is fed into a powder silo through a powder chute. A mobile silo is assembled on the crane. The powder silo is provided with a discharger A. The mobile silo can receive the alloy powder in the powder silo. The mobile silo is provided with a discharge pipe. The mobile silo is provided with a discharger B. The discharge end of the discharge pipe is located next to the ladle. During the casting process of the ladle, the discharger B controls the discharge of metal powder from the discharge pipe. The discharge point of the metal powder coincides with the casting point of the ladle.

[0007] As a further solution of the present invention: the crushing equipment and the multi-stage screening device are respectively divided into two groups, the qualified fragments of the multi-stage screening device are sent to melting through a transmission belt, and the large fragments are sent to another crushing equipment through an elevator for rework and interactive crushing.

[0008] As a further solution of the present invention: a dust hood is provided between the discharge end of the crushing equipment and the feed port of the multi-stage screening device, the dust hood is connected to the dust collector through a dust suction pipeline, and an induced draft fan is installed on the dust suction pipeline.

[0009] As a further solution of the present invention: the alloy dust discharge port of the dust collection line is sent into the powder silo through a powder chute, and is sent into the mobile silo together with the alloy powder.

[0010] As a further solution of the present invention: the outer side of the discharge port of the discharger A is conical, and the top of the mobile silo is provided with a docking device that can form a sealed docking with the discharge port of the discharger A.

[0011] As a further solution of the present invention: the docking device is composed of an electric push rod and a telescopic compensation tube. The telescopic compensation tube is installed at the feeding port of the mobile silo. An electric push rod is provided on the periphery of the telescopic compensation tube. The electric push rod is used to push the telescopic compensation tube to extend its length and dock it with the outside of the discharge port of the discharger A.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] This metal dust recovery system uses a multi-stage screening device and alloy dust recovery and storage, a crane-mounted silo, and alloy powder is transferred to the silo. After being discharged through the discharger B, it is integrated with the high-temperature alloy and flows all over the casting plate to form a block alloy. The powder rate is reduced during the crushing process of the finished product, and the powder utilization rate is improved in the production process, achieving the goal and path of energy saving and efficiency improvement. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural diagram of a metal dust recovery system.

[0015] In the figure: 1. Crushing equipment; 2. Multi-stage screening device; 3. Powder chute; 4. Conveyor belt; 5. Elevator; 6. Dust hood; 7. Dust collection line; 8. Dust collector; 9. Powder silo; 10. Mobile silo; 11. Crane; 12. Discharge pipe; 13. Discharger A; 14. Connector; 15. Connector base; 16. Ladle; 17. Discharger B. DETAILED DESCRIPTION

[0016] See also Figure 1In one embodiment of the present invention, a metal dust recovery system includes a crushing device 1, a crane 11 and a ladle 16. The crane 11 is mounted with the ladle 16 via a connecting seat 15. The discharge end of the crushing device 1 is provided with a multi-stage screening device 2. The multi-stage screening device 2 screens out large pieces of crushed material, qualified pieces of crushed material and alloy powder. The alloy powder is fed into a powder silo 9 via a powder chute 3. A mobile silo 10 is mounted on the crane 11. The powder silo 9 is provided with a discharger A13. The mobile silo 10 can receive the alloy powder from the powder silo 9. The mobile silo 10 is provided with a discharge pipe 12. The mobile silo 10 is provided with a discharger B17. The discharge end of the discharge pipe 12 is located next to the molten iron ladle 16. During the casting process of the molten iron ladle 16, the discharger B17 controls the discharge pipe 12 to discharge the metal powder. The discharge point of the metal powder coincides with the casting point of the molten iron ladle 16. During the crushing process of the crushing equipment 1, the fine powder produced by the crushing is screened out by the multi-stage screening device 2. The multi-stage screening device 2 mainly screens out large pieces of crushed materials, qualified pieces and alloy powder. The purpose of screening mainly has three uses. The first function is to separate the fine powder to avoid it from being transported. The belt and conveying equipment are transported to the melting step and lost. The second function is to screen out qualified fragments. The crushing equipment 1 generally adopts a jaw crusher and a low-speed kneading crusher. Even if the qualified fragments are screened out, secondary crushing can be effectively avoided, and the generation of alloy powder can be reduced by adjusting the crushing particle size of the equipment, through multiple crushing and multiple screening. The third function is to screen out large pieces of fragments, and only the large pieces of fragments are crushed twice or multiple times until they are ground to a qualified particle size. The separated alloy powder is transported separately to the powder silo 9, and the driving crane 11 moves to the powder silo. When the powder reaches the bottom of the bin 9, the alloy powder is fed into the mobile silo 10 of the traveling crane 11. The mobile silo 10 feeds the material at a uniform speed through the discharger B17 and the discharge pipe 12. The discharge port corresponds to the pouring point position. When pouring, the powder directly fuses with the high-temperature alloy and flows all to the entire pouring tray to form a block alloy. Each furnace can utilize at least 1.5 tons of alloy powder. A single furnace can consume tons of alloy powder per day, and at the same time increase 9 tons of manganese silicon alloy products. The powder rate is reduced in the crushing process of the finished product, and the powder utilization rate is improved in the production link, achieving the goal and path of energy saving and efficiency improvement.

[0017] In a preferred embodiment, the crushing equipment 1 and the multi-stage screening device 2 are respectively divided into two groups. The qualified fragments of the multi-stage screening device 2 are sent to melting through the transmission belt 4, and the large fragments are sent to another crushing equipment 1 through the elevator 5 for rework and interactive crushing. The crushing equipment 1 and the multi-stage screening device 2 can be configured with multiple or one units as needed. Since the crushing particle size of the crushing equipment 1 is debugged and the large fragments need to be reworked and crushed, the appropriate increase in the number of crushing equipment 1 and the multi-stage screening device 2 can meet production needs and improve production efficiency.

[0018] In a preferred embodiment, a dust hood 6 is provided between the discharge end of the crushing equipment 1 and the feed port of the multi-stage screening device 2. The dust hood 6 is connected to the dust collector 8 through a dust suction pipeline 7. A draft fan is installed on the dust suction pipeline 7. The crushing equipment 1 will also generate a certain amount of dust during the crushing and unloading process. The dust is recovered by the dust hood 6, collected and separated by the dust collector 8, and sent to the powder silo 9 and then into the mobile silo 10 for fusion.

[0019] In a preferred embodiment, the alloy dust outlet of the dust collection pipeline 7 is sent into the powder silo 9 through the powder chute 3, and is sent into the mobile silo 10 together with the alloy powder. The crane 11 moves back and forth to perform the casting operation. The alloy powder and alloy dust can be used together to fuse with the high-temperature alloy.

[0020] In a preferred embodiment, the outer side of the discharge port of the discharger A13 is conical, and a docking device 14 is provided on the top of the mobile silo 10, which can form a sealed docking with the discharge port of the discharger A13. The powder silo 9 is fixed in position and cannot be moved. The mobile silo 10 is translated by the crane 11. When the mobile silo 10 moves to the bottom of the powder silo 9, the discharger A13 and the docking device 14 are docked and discharged after the position is calibrated by the crane 11.

[0021] In a preferred embodiment, the docking device 14 is composed of an electric push rod and a telescopic compensation tube. The telescopic compensation tube is installed at the feeding port of the mobile silo 10. An electric push rod is provided on the periphery of the telescopic compensation tube. The electric push rod pushes the telescopic compensation tube to extend its length and dock it with the outside of the unloading port of the discharger A13. The telescopic compensation tube is a prior art and is commonly used in pipeline construction. It is suitable for this application and has a certain degree of scalability. After the position of the crane 11 is calibrated, the electric push rod pushes the telescopic compensation tube to extend and dock with the outside of the unloading port of the discharger A13 to avoid leakage of alloy powder and alloy dust during the unloading process.

[0022] It should be noted that the above embodiments all belong to the same utility model concept, and the description of each embodiment has its own focus. For any details not described in individual embodiments, reference may be made to the description in other embodiments.

[0023] The above-described embodiments merely represent implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A metal dust recovery system, comprising a crushing device (1), a crane (11) and a ladle (16), wherein the crane (11) is mounted on the ladle (16) via a connecting seat (15), and is characterized in that: The discharging end of the crushing equipment (1) is provided with a multi-stage screening device (2), which screens out large pieces of crushed materials, qualified pieces and alloy powder. The alloy powder is sent to the powder silo (9) through the powder chute (3). The mobile silo (10) is assembled on the traveling crane (11). The powder silo (9) is provided with a discharger A (13). The mobile silo (10) can receive the alloy powder from the powder silo (9). The mobile silo (10) is provided with a discharge pipe (12). The mobile silo (10) is provided with a discharger B (17). The discharge end of the discharge pipe (12) is located beside the molten iron ladle (16). During the casting process of the molten iron ladle (16), the discharger B (17) controls the discharge of metal powder from the discharge pipe (12). The discharge point of the metal powder coincides with the casting point of the molten iron ladle (16).

2. A metal dust recovery system according to claim 1, characterized in that: The crushing equipment (1) and the multi-stage screening device (2) are respectively divided into two groups. The qualified fragments of the multi-stage screening device (2) are sent to melting through a transmission belt (4), and the large fragments are sent to another crushing equipment (1) through an elevator (5) for rework and interactive crushing.

3. The metal dust recovery system according to claim 1, characterized in that: A dust hood (6) is provided between the discharge end of the crushing equipment (1) and the feed inlet of the multi-stage screening device (2). The dust hood (6) is connected to a dust collector (8) via a dust collection pipeline (7), and an induced draft fan is installed on the dust collection pipeline (7).

4. A metal dust recovery system according to claim 3, characterized in that: The alloy dust outlet of the dust collection pipeline (7) is fed into the powder silo (9) through a powder chute (3) and is then fed into the mobile silo (10) together with the alloy powder.

5. A metal dust recovery system according to any one of claims 1 to 4, characterized in that: The outer side of the discharge port of the discharger A (13) is conical, and the top of the mobile silo (10) is provided with a docking device (14) capable of forming a sealed docking with the discharge port of the discharger A (13).

6. The metal dust recovery system according to claim 5, characterized in that: The docking device (14) is composed of an electric push rod and a telescopic compensation tube. The telescopic compensation tube is installed at the feeding port of the mobile silo (10). An electric push rod is provided on the periphery of the telescopic compensation tube. The electric push rod is used to push and extend the length of the telescopic compensation tube to dock with the outer side of the discharge port of the discharger A (13).

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