A high-efficiency titanium slag treatment system

Abstract

This invention belongs to the field of titanium slag smelting and production technology, specifically relating to a high-efficiency titanium slag treatment system. It includes a slag-guiding plate and a receiving trough installed sequentially. The slag-guiding plate is inclined downwards, and its lower end is connected to the receiving trough, which is equipped with a water spray structure and a crushing and slag-removing device. The feed inlet of the crushing device is connected to the discharge end of the receiving trough. Multiple semi-circular grooves are evenly distributed circumferentially on the surface of the crushing roller of the crushing device. Each groove is arranged along the length of the crushing roller and parallel to the central axis of the crushing roller. Multiple secondary crushing rollers above the primary crushing roller have arc-shaped protrusions on their surfaces that cooperate with the grooves. A slag-removing roller is installed between adjacent secondary crushing rollers. This invention can realize continuous automated production of titanium slag discharge, cooling, coarse crushing, fine crushing, and screening. The equipment used is simple, occupies little space, has low cost, high crushing and cooling efficiency, and saves time and labor.

Description

Technical Field

[0001] This invention belongs to the field of titanium slag smelting and production technology, and specifically relates to a high-efficiency titanium slag treatment system. Background Technology

[0002] Titanium slag is the product of selective iron removal from ilmenite through carbothermic reduction with a solid reducing agent in an electric furnace. It is a high-melting-point slag, with an outlet temperature of approximately 1650℃~1750℃. Titanium slag is characterized by its short slag length and narrow crystallization temperature range. When the temperature is above its melting point, the fully molten titanium slag has very low viscosity. However, as the slag temperature approaches its melting point, its viscosity increases sharply, the melt becomes very viscous, and the slag's fluidity deteriorates. Furthermore, due to its low thermal conductivity, titanium slag often requires a long cooling time, typically more than 24 hours, to lower its temperature to room temperature. Currently, electric furnace production of titanium slag... The titanium slag processing technology is as follows: after the molten titanium slag is discharged from the furnace, it enters a slag basin or slag pot for water spraying and cooling. After the titanium slag separates from the slag basin or slag pot, it continues to cool until the surface of the titanium slag is cooled to below 200°C. The cooled titanium slag is first crushed by hydraulic hammer crusher, and then by jaw crusher to obtain small titanium slag blocks. The small titanium slag blocks are then cooled by hammer crusher or ball mill to obtain fine titanium slag. The fine titanium slag is metered and packaged to obtain finished titanium slag. The process is complicated, the crushing is time-consuming and labor-intensive, the workload is large, and a large number of crushing equipment are required. A large amount of dust is generated during the crushing process, which pollutes the process, increases costs, and has a long cooling time. Summary of the Invention

[0003] In response to the above problems, the purpose of this invention is to provide a high-efficiency titanium slag treatment system that can realize continuous automated production of titanium slag discharge, cooling, coarse crushing, fine crushing, and screening. The system uses simple equipment, occupies little space, has low cost, high crushing and cooling efficiency, and saves time and labor.

[0004] The objective of this invention is achieved through the following technical solution: A high-efficiency titanium slag treatment system, comprising a slag-guiding plate, a receiving trough, a crushing and slag-removing device, a slag-grinding device, and a screening and cooling device. The slag-guiding plate is inclined downwards and positioned below the slag outlet. The lower end of the slag-guiding plate is connected to the receiving trough, which is equipped with a water spray structure. The crushing and slag-removing device is installed inside the receiving trough. The feed inlet of the slag-grinding device is connected to the discharge end of the receiving trough. The slag-grinding device includes a first grinding roller, on the surface of which multiple semi-circular grooves are evenly distributed circumferentially. Each groove is arranged along the length of the first grinding roller and parallel to the central axis of the first grinding roller. Multiple second grinding rollers are positioned above the first grinding roller, and the surfaces of the second grinding rollers are provided with semi-circular grooves that match the grooves. The device features an arc-shaped convex ridge, with a slag-removing roller positioned between two adjacent crushing rollers. The slag-removing roller has multiple rows of teeth circumferentially arranged to match the shape of the strip groove. The discharge end of the crushing device is connected to the screening and cooling device. The pre-crushed titanium slag is scooped into the feed inlet of the crushing device by the crushing and slag-removing device. The strip groove serves as a receiving cavity for the material, rotating sequentially with the rotation of the first crushing roller to the discharge position connected to the discharge end of the receiving trough for receiving the material. After receiving the material, the strip groove rotates upward and is successively crushed by the arc-shaped cam on the second crushing roller. After being crushed, the titanium slag is loosened by the slag-removing roller, with larger slag particles being scraped to the surface of the material. Then, it undergoes a second crushing. When the strip groove rotates with the first crushing roller to the downward position, the material is discharged downward onto the screening and cooling device.

[0005] Furthermore, the engagement depth and gap between the arc-shaped protrusion and the strip groove on the second rolling roller are adjustable. The engagement depth between the arc-shaped protrusion and the strip groove on the second rolling roller can be adjusted sequentially according to the required particle size of titanium slag, that is, the gap between the surface of the arc-shaped protrusion and the semi-circular inner wall of the strip groove.

[0006] Furthermore, the engagement depth between the arc-shaped protrusions and the strip grooves of the multiple rolling rollers gradually increases from the feed port side of the slag grinding device to the discharge port side of the slag grinding device. Since the titanium slag is uneven in size and unevenly distributed in the strip grooves after being crushed by the crushing and slag-removing device, the engagement depth between the arc-shaped protrusions and the strip grooves should be relatively shallow during the initial rolling, that is, the gap between the surface of the arc-shaped protrusions and the semi-circular inner wall of the strip grooves should be relatively large to prevent the titanium slag from jumping around during rolling.

[0007] Furthermore, the surface of the first rolling roller is evenly distributed with 10 strip grooves, and the teeth of the slag-removing roller mesh with the strip grooves that rotate to the top. The two second rolling rollers are located on both sides of the slag-removing roller.

[0008] Furthermore, baffles are provided at both ends of the strip groove on the first rolling roller to prevent titanium slag from falling off.

[0009] Furthermore, the discharge end of the receiving trough is located below the discharge end of the slag-guiding plate, and a gap is left between the receiving trough and the slag-guiding plate to release the crushing impact force.

[0010] Furthermore, the crushing and slag-removing device includes rotating rollers rotatably mounted on the sidewalls of the receiving trough at both ends. Multiple slag-removing plates are evenly arranged circumferentially on the rotating rollers. The slag-removing plates are provided with crushing teeth. Two to three of the crushing and slag-removing devices can be arranged parallel to each other with gaps along the unloading direction of the receiving trough as needed.

[0011] Furthermore, the crushing teeth on the adjacent rows of slag removal plates are arranged in an alternating pattern.

[0012] Furthermore, the rotating rollers of the crushing and slag-removing device and the rotating shafts of the first crushing roller are both driven by variable frequency motors, and the variable frequency motors are connected to the controller. The controller controls the motor speeds of the rotating rollers and the first crushing roller, so that the crushing and slag-removing speed of the rotating rollers is adapted to the crushing and conveying speed of the first crushing roller.

[0013] Furthermore, multiple annular protrusions are evenly arranged along the length of the second rolling roller. The design of the annular protrusions can effectively enhance the rolling pressure of the second rolling roller, while buffering the impact force of the collision when the titanium slag is rolled, so that the second rolling roller is subjected to uniform force during the rolling process.

[0014] Furthermore, the screening and cooling device includes a vibrating screen, the bottom of which is provided with a box for receiving fine slag. The box is inclined downward from the feed end to the discharge end. The vibrating screen is provided with a water spray structure for cooling and temperature reduction. The bottom sides of the box are provided with diversion channels, which are connected to the sedimentation tank through a water collection pipeline.

[0015] Furthermore, the first rolling roller, the second rolling roller, and the slag-removing roller are connected by gear transmission. The first rolling roller is equipped with a driving gear, and the second rolling roller and the slag-removing roller are equipped with driven gears.

[0016] In this invention, molten titanium slag flows obliquely downwards from the slag outlet through the slag guide plate into the receiving tank and solidifies into solid titanium slag. Since the receiving tank is equipped with a water spray structure, the high-temperature titanium slag is cooled by spraying water. The crushing and slag-removing device is activated to crush and remove the water-cooled titanium slag. Because the feed inlet of the crushing device is connected to the discharge end of the receiving tank, the initially crushed titanium slag is scooped into the feed inlet of the crushing and slag-removing device by the crushing and slag-removing device. Multiple semi-circular grooves are evenly distributed circumferentially on one surface of the crushing roller. The trough, serving as a material-carrying cavity, rotates sequentially with the rotation of the first rolling drum to the material-receiving position connected to the discharge end of the receiving trough for receiving material. After receiving the material, the strip trough rotates upward and is successively crushed by the arc-shaped cam on the second rolling drum. After being crushed, the titanium slag is loosened by the slag-removing roller, which removes larger slag particles to the surface of the material. Then, it undergoes secondary crushing until the desired particle size of the titanium slag is obtained. When the strip trough rotates with the first rolling drum to the downward position of the trough opening, it discharges downward to the screening and cooling device connected to it for further cooling to obtain the desired fine titanium slag.

[0017] Beneficial effects: This invention can realize continuous automated production of titanium slag discharge, cooling, coarse crushing, fine crushing and screening. The equipment used is simple, occupies little space, has low cost, high crushing and cooling efficiency, and saves time and labor. Attached Figure Description

[0018] The invention will now be described in more detail by way of example, with reference to the accompanying drawings, in which:

[0019] Figure 1 : A three-dimensional structural schematic diagram of Embodiment 1 of the present invention.

[0020] Figure 2 : A side view of the slag grinding device and screening and cooling device of Embodiment 1 of the present invention.

[0021] Figure 3 : Schematic diagram of the installation structure of the upper baffle plate of the rolling roller in Embodiment 2 of the present invention.

[0022] Figure 4 : Schematic diagram of the side structure of the arc-shaped convex ridge and the annular convex ridge on the second roller of the present invention in Embodiment 3 of the present invention.

[0023] Figure 5 : A schematic diagram of the main structure of the arc-shaped convex ridge and the annular convex ridge on the second roller of the present invention in Embodiment 3.

[0024] In the diagram: 01. Slag-drawing plate, 02. Receiving trough, 03. Crushing and slag-removing device, 1. Slag-grinding device, 2. Screening and cooling device, 3. Water spray structure, 4. Dust cover, 11. Roller I, 12. Strip trough, 13. Roller II, 14. Slag-removing roller, 15. Slag-removing teeth, 16. Feed inlet of slag-grinding device, 17. Discharge outlet of slag-grinding device, 18. Baffle plate, 131. Arc-shaped protrusion, 132. Annular protrusion, 031. Rotating roller, 032. Slag-removing plate, 033. Crushing teeth, 21. Vibrating screen, 22. Box body, 23. Diversion trough. Detailed Implementation

[0025] In this invention, for ease of description, the relative positional relationships of each component are described according to the layout of the accompanying drawings. For example, the positional relationships of top, bottom, left, right, etc., are determined according to the layout direction in the accompanying drawings.

[0026] Example 1, referring to Figure 1 , Figure 2 A high-efficiency titanium slag treatment system includes a slag-guiding plate 01, a receiving trough 02, a crushing and slag-removing device 03, a slag-grinding device 1, and a screening and cooling device 2. The slag-guiding plate 01 is inclined downwards and positioned below the slag outlet. The lower end of the slag-guiding plate 01 is connected to the receiving trough 02. A water spray structure 3 is provided on the receiving trough 02, and the crushing and slag-removing device 03 is installed inside the receiving trough 02. A dust cover 4 is provided above the receiving trough 02. The feed inlet of the slag-grinding device 1 is connected to the discharge end of the receiving trough 02. The slag-grinding device 1 includes a rolling roller 11, the surface of which is circumferentially... The device has multiple semi-circular grooves 12 evenly distributed along the length of the first rolling drum 11 and parallel to the axis of rotation at the center of the first rolling drum 11. Multiple second rolling drums 13 are arranged above the first rolling drum 11. The surface of the second rolling drum 13 is provided with arc-shaped protrusions 131 that match the semi-circular shape of the grooves 12. A slag-removing roller 14 is arranged between two adjacent second rolling drums 13. The surface of the slag-removing roller 14 is provided with multiple rows of slag-removing teeth 15 that match the shape of the grooves 12. The discharge end of the slag-grinding device 1 is connected to the screening and cooling device 2.

[0027] The engagement depth and gap between the arc-shaped protrusion 131 on the second rolling roller 13 and the strip groove 12 are adjustable. The engagement depth between the arc-shaped protrusion 131 and the strip groove 12 on the second rolling roller 13 can be adjusted sequentially according to the required titanium slag particle size. That is, the gap between the surface of the arc-shaped protrusion 131 and the semi-circular inner wall of the strip groove 12.

[0028] The engagement depth between the arc-shaped protrusions 131 of the multiple rolling rollers 13 and the strip grooves 12 gradually increases from the feed inlet 16 side of the slag crushing device 1 to the discharge outlet 17 side of the slag crushing device 1. Since the titanium slag is uneven in size and unevenly distributed in the strip grooves 12 after being crushed by the crushing and slag removal device 03, the engagement depth between the arc-shaped protrusions 131 and the strip grooves 12 should be relatively shallow during the initial rolling. That is, the gap between the surface of the arc-shaped protrusions 131 and the semi-circular inner wall of the strip grooves 12 should be relatively large to prevent the titanium slag from jumping around during rolling.

[0029] The surface of the first rolling roller 11 has 10 strip grooves 12 evenly distributed around its circumference. The teeth 15 of the slag-removing roller 14 mesh with the strip grooves 12 that have rotated to the top. The two second rolling rollers 13 are located on both sides of the slag-removing roller 14.

[0030] The discharge end of the receiving trough 02 is located below the discharge end of the slag-guiding plate 01, and a gap is left between the receiving trough 02 and the slag-guiding plate 01 to release the crushing impact force.

[0031] The crushing and slag-removing device 03 includes a rotating roller 031 rotatably mounted on the side wall of the receiving trough 02 at both ends. The rotating roller 031 is evenly provided with a plurality of slag-removing plates 032 in the circumferential direction. The slag-removing plates 032 are provided with crushing teeth 033. One or two of the crushing and slag-removing devices 03 can be arranged parallel to each other along the unloading direction of the receiving trough 02 as needed. The crushing teeth on adjacent rows of slag-removing plates 032 are arranged alternately.

[0032] The rotating shafts of the rotating roller 031 and the crushing roller 11 of the crushing and slag removal device 03 are both driven by variable frequency motors and are connected to a controller. The controller controls the motor speed of the rotating roller 031 and the crushing roller 11 so that the crushing and slag removal speed of the rotating roller 031 is adapted to the crushing and conveying speed of the crushing roller 11.

[0033] The screening and cooling device 2 includes a vibrating screen 21. The bottom of the vibrating screen 21 is provided with a box 22 for receiving fine slag. The box 22 is inclined downward from the feed end to the discharge end. The vibrating screen 21 is provided with a water spray structure 3 for cooling. The bottom sides of the box 22 are provided with diversion channels 23, which are connected to the sedimentation tank through a water collection pipeline.

[0034] The first rolling roller 11 is connected to the second rolling roller 13 and the slag removal roller 14 by gear transmission. The first rolling roller 11 is equipped with a driving gear, and the second rolling roller and the slag removal roller are equipped with driven gears.

[0035] In this invention, molten titanium slag flows obliquely downward from the slag outlet through the slag guide plate 01 into the receiving tank 02 and solidifies into solid titanium slag. Since the receiving tank 02 is equipped with a water spray structure 3, the water spray structure 3 cools the high-temperature titanium slag. The crushing and slag-removing device 03 is activated to crush and remove the water-cooled titanium slag. Because the feed inlet of the slag-rolling device 1 is connected to the discharge end of the receiving tank 02, the initially crushed titanium slag is scooped into the feed inlet of the slag-rolling device 1 by the crushing and slag-removing device 03. Multiple semi-circular grooves 12 are evenly distributed circumferentially on the surface of the rolling roller 11. The trough 12 serves as a material-carrying cavity. As the first rolling drum 11 rotates, it rotates sequentially to the material-receiving position connected to the discharge end of the receiving trough 02 for receiving material. After receiving the material, the strip trough 12 rotates upward and is successively rolled by the arc-shaped cam 131 on the second rolling drum 13. After being rolled, the titanium slag is loosened by the slag-removing roller 14, which can remove larger slag particles to the surface of the material. Then, it is rolled a second time until the desired particle size of the titanium slag is obtained. When the strip trough 12 rotates with the first rolling drum 11 to the downward position of the trough opening, it discharges downward to the screening and cooling device 2 connected to it for further cooling to obtain the desired fine titanium slag.

[0036] Example 2, refer to Figure 3 As a further optimization of Embodiment 1, baffles 18 are provided on the rolling roller 11 at both ends of the strip groove 12 to prevent titanium slag from falling off.

[0037] Example 3, referring to Figure 4 , Figure 5 As a further optimization of Embodiment 1, multiple annular protrusions 132 are evenly arranged along the length direction on the second rolling roller 13. The design of the annular protrusions 132 can effectively enhance the rolling pressure of the second rolling roller 13, while buffering the impact force of the second rolling roller 13 during titanium slag rolling.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency titanium slag treatment system, characterized in that, The system includes a slag-guiding plate, a receiving trough, a crushing and slag-removing device, a slag-grinding device, and a screening and cooling device. The slag-guiding plate is inclined downwards and positioned below the slag outlet. The lower end of the slag-guiding plate is connected to the receiving trough, which is equipped with a water spray structure. The crushing and slag-removing device is installed inside the receiving trough. The feed inlet of the slag-grinding device is connected to the discharge end of the receiving trough. The slag-grinding device includes a first grinding roller. The surface of the first grinding roller has multiple semi-circular grooves evenly distributed around its circumference. Each groove is arranged along the length of the first grinding roller and parallel to the central axis of the first grinding roller. Above the first grinding roller are multiple second grinding rollers, the surface of which has arc-shaped protrusions that correspond to the semi-circular grooves. Between two adjacent crushing rollers, a slag-removing roller is provided. The slag-removing roller has multiple rows of slag-removing teeth circumferentially arranged on its surface to match the shape of the strip groove. The discharge end of the crushing device is connected to the screening and cooling device. The titanium slag after preliminary crushing is scooped into the feed inlet of the crushing device by the crushing and slag-removing device. The strip groove serves as a receiving cavity for carrying materials. As the crushing roller rotates, it rotates sequentially to the discharge position connected to the discharge end of the receiving groove for receiving materials. After receiving materials, the strip groove rotates upward and is crushed sequentially by the arc-shaped cam on the crushing roller. After being crushed, the titanium slag is loosened by the slag-removing roller, and larger slag particles are scooped to the surface of the slag. Then, it is crushed a second time. When the strip groove rotates with the crushing roller to the position where the groove opening faces downward, it discharges downward onto the screening and cooling device.

2. The high-efficiency titanium slag treatment system as described in claim 1, characterized in that: The engagement depth and gap between the arc-shaped protrusions and the strip grooves on the second rolling roller are adjustable.

3. The high-efficiency titanium slag treatment system as described in claim 1 or 2, characterized in that: The first rolling roller has 10 strip grooves evenly distributed around its circumference. The teeth of the slag-removing roller mesh with the strip grooves that rotate to the top. The two second rolling rollers are located on both sides of the slag-removing roller.

4. The high-efficiency titanium slag treatment system as described in claim 3, characterized in that: A baffle plate is provided at both ends of the strip groove on the first rolling roller to prevent titanium slag from falling off.

5. The high-efficiency titanium slag treatment system as described in claim 1, characterized in that: The feed end of the receiving trough is located below the discharge end of the slag-guiding plate, and a gap is left between the receiving trough and the slag-guiding plate to release the crushing impact force.

6. The high-efficiency titanium slag treatment system as described in claim 5, characterized in that: The crushing and slag-removing device includes rotating rollers rotatably mounted on the sidewalls of the receiving trough at both ends. Multiple slag-removing plates are evenly arranged circumferentially on the rotating rollers. The slag-removing plates are provided with crushing teeth. Two to three of the crushing and slag-removing devices are arranged parallel to each other with gaps along the unloading direction of the receiving trough.

7. The high-efficiency titanium slag treatment system as described in claim 6, characterized in that: The rotating rollers and the rotating shafts of the crushing and slag-removing device are both driven by variable frequency motors, and the variable frequency motors are connected to the controller.

8. The high-efficiency titanium slag treatment system as described in claim 1, characterized in that: Multiple annular protrusions are evenly spaced along the length of the second rolling roller.

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