Production line for removing iron from vanadium slag

Abstract

The present invention relates to a production line for removing iron from vanadium slag. It includes a raw material bin, a first crusher is arranged below the outlet of the raw material bin, a feed end of a first conveyor is arranged below the outlet of the first crusher, a second crusher is arranged below the discharge end of the first conveyor, a feed end of the second conveyor is arranged below the outlet of the second crusher, a third crusher is arranged below the discharge end of the second conveyor, a belt-type magnetic separation device is arranged below the outlet of the third crusher, the belt-type magnetic separation device is provided with a fixed screen, an iron hopper and a first iron hopper, the outlet of the iron hopper is connected to the inlet of a ball mill through an elevator, a separation screen is arranged below the outlet of the ball mill, a clean hopper and a second iron hopper are arranged below the separation screen respectively; the outlet of the fixed screen is connected to the inlet of the third crusher through a third conveyor and a fourth conveyor in turn. The present invention removes all the iron in the vanadium slag, improves the quality of vanadium pentoxide, has high production efficiency and large production capacity.

Description

Technical Field

[0001] The invention relates to iron removal equipment, in particular to a production line for removing iron from vanadium slag. Background Art

[0002] Vanadium pentoxide is widely used in metallurgy, chemical industry and other industries as an alloy additive, accounting for more than 80% of the total consumption of vanadium pentoxide, followed by being used as a catalyst for organic chemical industry. Vanadium slag contains a large amount of vanadium pentoxide, which can be obtained by processing and separating vanadium slag. Vanadium slag contains a large amount of clear iron, and the particle size of the clear iron varies. For large pieces of clear iron, the vanadium slag is usually sent to a designated site and manually sorted to remove the clear iron in the vanadium slag. Manual sorting is labor-intensive, inefficient, wastes transportation capacity, wastes time, and cannot meet large-scale continuous production. The small-sized iron in the vanadium slag cannot be completely removed, which affects the output and quality of vanadium pentoxide. Summary of the invention

[0003] The present invention aims to solve the above technical problems and provides a production line for removing iron from vanadium slag to remove all the iron in the vanadium slag.

[0004] The technical solution adopted by the present invention to solve the technical problem is:

[0005] A production line for removing iron from vanadium slag comprises a raw material bin, a first crusher is arranged below the outlet of the raw material bin, a feeding end of a first conveyor is arranged below the outlet of the first crusher, a second crusher is arranged below the discharging end of the first conveyor, a feeding end of the second conveyor is arranged below the outlet of the second crusher, a third crusher is arranged below the discharging end of the second conveyor, a belt magnetic separation device is arranged below the outlet of the third crusher, the belt magnetic separation device is provided with a fixed screen, an iron hopper and a first iron hopper, the outlet of the iron hopper is connected with the inlet of a ball mill through an elevator, a separation screen is arranged below the outlet of the ball mill, a clean hopper and a second iron hopper are arranged below the separation screen respectively; the outlet of the fixed screen is connected with the inlet of the third crusher through the third and fourth conveyors in sequence.

[0006] Compared with the prior art, the present invention using the above technical solution has the following beneficial effects:

[0007] Remove all iron from vanadium slag, improve the quality of vanadium pentoxide, and increase production efficiency and capacity.

[0008] Further, the optimization scheme of the present invention is:

[0009] It also includes a dust collecting device, which includes a fan, a main pipeline, a first collecting pipe, a second collecting pipe, a third collecting pipe and a dust outlet pipe. The first collecting pipe is provided above the second crusher, the second collecting pipe is provided above the third crusher, and the third collecting pipe is provided above the separation screen. The first collecting pipe, the second collecting pipe and the third collecting pipe are respectively connected to the main pipeline, the main pipeline is connected to the inlet of the fan, and the outlet of the fan is connected to the clean material bin through the dust outlet pipe.

[0010] The first crusher and the second crusher are jaw crushers, and the third crusher is a vertical crusher.

[0011] The elevator is a bucket elevator. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic structural diagram of an embodiment of the present invention;

[0013] Figure 2 yes Figure 1 A-direction view;

[0014] Figure 3 It is a schematic diagram of a belt-type magnetic separation device according to an embodiment of the present invention.

[0015] In the figure: raw material bin 1; vibrator 1-1; first crusher 2; first belt conveyor 3; second crusher 4; second belt conveyor 5; third crusher 6; belt magnetic separation and sorting device 7; frame 7-1; magnetic roller 7-2; conveyor belt 7-3; redirecting roller 7-4; reduction motor 7-5; fixed screen 7-6; iron hopper 7-7; first iron bin 7-8; third belt conveyor 8; fourth belt conveyor 9; bucket elevator 10; ball mill 11; separation screen 12; clean bin 13; second iron bin 14; dust collecting device 15; fan 15-1; main pipeline 15-2; first collecting pipe 15-3; second collecting pipe 15-4; third collecting pipe 15-5; dust outlet pipe 15-6. DETAILED DESCRIPTION

[0016] The present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0017] See also Figure 1 , Figure 2The present embodiment is a production line for removing iron from vanadium slag. Vanadium slag is stored in a raw material bin 1. A vibrator 1-1 is installed on the outer wall of the raw material bin 1. A first crusher 2 is installed below the outlet of the raw material bin 1. A first belt conveyor 3 is installed below the outlet of the first crusher 2. A second crusher 4 is installed below the discharge end of the first belt conveyor 3. The first crusher 2 and the second crusher 4 are jaw crushers. A second belt conveyor 5 is installed below the discharge port of the second crusher 4. A third crusher 6 is installed below the discharge end of the second belt conveyor 5. The third crusher is a vertical crusher. A belt magnetic separation device 7 is installed below the outlet of the third crusher 6.

[0018] The belt type magnetic separation screen device 7 is composed of a frame 7-1, a magnetic drum 7-2, a conveyor belt 7-3, a redirecting drum 7-4, a reduction motor 7-5, a fixed screen 7-6, an iron hopper 7-7 and a first iron silo 7-8, etc. ( Figure 3 As shown in the figure, the frame 7-1 is a frame structure, and the two ends of the top thereof are respectively installed with a magnetic roller 7-2 and a redirecting roller 7-4, which are respectively fixedly connected to the frame 7-1 through a bearing seat, and a conveyor belt 7-3 is installed between the magnetic roller 7-2 and the redirecting roller 7-4. The magnetic roller 7-2 is a magnetic roller made of a seamless stainless steel pipe and a rare earth alloy neodymium iron boron placed therein, and the redirecting roller 7-4 is close to the outlet of the third crusher 6. The magnetic roller 7-2 is driven by a drive wheel of a reduction motor 7-5 through a chain or a belt, and the reduction motor 7-5 is installed on a bracket inside the frame 7-1. An inclined fixed screen 7-6 is provided on the outside of the magnetic roller 7-2, and both sides of the fixed screen 7-6 are fixedly connected to the frame 7-1. An iron hopper 7-7 parallel to the fixed screen 7-6 is provided below the bottom surface of the fixed screen 7-6, and both sides of the iron hopper 7-7 are fixedly connected to the frame 7-1, and a first iron silo 7-8 is provided on the inside of the magnetic roller 7-2.

[0019] A third belt conveyor 8 is installed below the outlet end of the fixed screen 7-6 of the belt magnetic separation screen device 7, the feed end of the fourth belt conveyor 9 is placed below the discharge end of the third belt conveyor 8, and the discharge end of the fourth belt conveyor 9 is placed above the inlet of the third crusher 6. The outlet of the iron hopper 7-7 is connected to the feed port of the bucket elevator 10, the discharge port of the bucket elevator 10 is connected to the feed port of the ball mill 11, and a vibrating separation screen 12 is installed below the outlet of the ball mill 10. The vibrating separation screen 12 has two layers, a clean bin 13 is installed below the outlet of the lower screen, and a second iron bin 14 is installed below the outlet of the upper screen.

[0020] In this embodiment, a dust collecting device 15 is provided, and the dust collecting device 15 is composed of a fan 15-1, a main pipeline 15-2, a first collecting pipe 15-3, a second collecting pipe 15-4, a third collecting pipe 15-5 and a dust outlet pipe 15-6. A first collecting pipe 15-3 is provided above the second crusher 4, a second collecting pipe 15-4 is provided above the third crusher 6, and a third collecting pipe 15-5 is provided above the separation screen 12. The first collecting pipe 15-3, the second collecting pipe 15-4 and the third collecting pipe 15-5 are respectively installed with dust collecting hoods, and the first collecting pipe 15-3, the second collecting pipe 15-4 and the third collecting pipe 15-5 are respectively connected with the main pipeline 15-2, the main pipeline 15-2 is connected with the inlet of the fan 15-1, and the outlet of the fan 15-1 is installed with a dust outlet pipe 15-6, and the dust outlet pipe 15-6 is connected with the clean material bin 13.

[0021] The working process of this embodiment is as follows: the vanadium slag in the raw material bin 1 enters the first crusher 2 for crushing, and the particle size after crushing is 100 mm. The vanadium slag after crushing by the first crusher 2 is conveyed to the second crusher 4 by the first conveyor 3, and the particle size after crushing is 50 mm. The vanadium slag after crushing by the second crusher 4 is conveyed to the third crusher 6 by the second belt conveyor 5, and the particle size after crushing is 10 mm. The vanadium slag after crushing by the third crusher 6 enters the belt magnetic separation screen device 7, and the belt magnetic separation screen device 7 divides the vanadium slag into iron-bearing material and clear iron. The iron-bearing material with a particle size greater than 10 mm is separated by the fixed screen. 7-6 enters the third belt conveyor 8, enters the fourth belt conveyor 9 from the third belt conveyor 8, and enters the third crusher 6 again from the fourth belt conveyor 9 for crushing; iron enters the first iron bin 7-8; iron materials with a particle size of less than 10 mm enter the bucket elevator 10, and enter the ball mill 11 from the bucket elevator 10. The particle size of the ball mill 11 is 100 mesh. The iron is ground into thin slices in the ball mill 11, and the vanadium slag is ground into powder. The powdered vanadium slag and thin-flaked iron enter the vibrating screen 12, and the iron enters the second iron bin 14. The powdered vanadium slag without iron enters the clean bin 13. The vanadium slag dust collected by the dust collecting device 15 directly enters the clean bin 13. The iron removal rate of this embodiment is 99.8%, which greatly improves the quality of vanadium pentoxide, while increasing production capacity and efficiency.

[0022] The above description is only a preferred feasible embodiment of the present invention, and does not limit the scope of rights of the present invention. All equivalent structural changes made using the contents of the present invention description and drawings are included in the scope of rights of the present invention.

Claims

1. A production line for removing iron from vanadium slag, comprising a raw material warehouse, characterized in that: A first crusher is provided below the outlet of the raw material bin, a feeding end of the first conveyor is placed below the outlet of the first crusher, a second crusher is placed below the discharging end of the first conveyor, a feeding end of the second conveyor is placed below the outlet of the second crusher, a third crusher is provided below the discharging end of the second conveyor, and a belt-type magnetic separation device is provided below the outlet of the third crusher; The belt-type magnetic separation screen device is composed of a frame, a magnetic drum, a conveyor belt, a redirecting drum, a reduction motor, a fixed screen, an iron hopper and a first iron silo. The magnetic drum and the redirecting drum are respectively installed at the two ends of the top of the frame, and a conveyor belt is installed between the magnetic drum and the redirecting drum. The magnetic drum is driven by a driving wheel of the reduction motor through a chain or a belt. An inclined fixed screen is arranged on the outside of the magnetic drum, and both sides of the fixed screen are fixedly connected to the frame. An iron hopper parallel to the fixed screen is arranged below the bottom surface of the fixed screen, and both sides of the iron hopper are fixedly connected to the frame. The first iron silo is arranged on the inside of the magnetic drum. The outlet of the iron hopper is connected to the inlet of the ball mill through the elevator. A separation screen is provided below the outlet of the ball mill. A clean material bin and a second iron material bin are provided below the separation screen. The outlet of the fixed screen is connected to the inlet of the third crusher through the third conveyor and the fourth conveyor in turn. The first and second crushers are jaw crushers, and the third crusher is a vertical crusher; The elevator is a bucket elevator.

2. The production line for removing iron from vanadium slag according to claim 1, characterized in that: It also includes a dust collecting device, which includes a fan, a main pipeline, a first collecting pipe, a second collecting pipe, a third collecting pipe and a dust outlet pipe. The first collecting pipe is provided above the second crusher, the second collecting pipe is provided above the third crusher, and the third collecting pipe is provided above the separation screen. The first collecting pipe, the second collecting pipe and the third collecting pipe are respectively connected to the main pipeline, the main pipeline is connected to the inlet of the fan, and the outlet of the fan is connected to the clean material bin through the dust outlet pipe.

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