Rod mill for crushing and purifying steel slag
By installing auxiliary components such as throwing plates and throwing blocks inside the rod mill drum, the height of the steel rods is increased to improve crushing efficiency, solving the problem of severe liner wear in traditional rod mills and achieving efficient crushing and low-cost steel slag purification.
Patent Information
- Application Number
- CN202423089778.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2034-12-13
AI Technical Summary
In traditional rod mills, increasing the height of the steel rods inside the mill to improve crushing efficiency results in severe wear of the liners, leading to shortened lifespan and increased maintenance costs.
Auxiliary components, including throwing plates and throwing blocks, are installed inside the drum. The throwing blocks raise the height of the steel bars to improve crushing efficiency and reduce the impact on the liners. A screen is designed for preliminary screening to extend the life of the liners.
It improves the crushing efficiency of steel slag, reduces the wear of the liner plates, lowers maintenance costs, extends the service life of the equipment, and improves the purification effect.
Smart Images
Figure CN223832421U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steel slag treatment technology, specifically to a rod mill for crushing and purifying steel slag. Background Technology
[0002] Steel slag, a major byproduct of steel smelting, has always been a significant challenge for the steel industry in terms of its treatment and utilization. Steel slag contains a large amount of metallic iron and other valuable elements; through crushing and purification, these resources can be effectively recovered, achieving resource recycling. However, traditional steel slag crushing and purification equipment, such as rod mills, while increasing the height of the steel rods to improve crushing efficiency, often causes severe wear on the internal liners, leading to shortened liner life and increased maintenance costs.
[0003] In the steel slag crushing and purification process, the working principle of a rod mill is to crush and grind the steel slag by rotating steel rods inside the drum. In traditional rod mill designs, the steel rods roll freely inside the drum, lacking an effective guidance and lifting mechanism, resulting in a chaotic movement trajectory and low crushing efficiency. To improve crushing efficiency, some improved rod mills have attempted to increase the height of the steel rods during internal throwing, but this method often leads to increased wear on the liner plates.
[0004] As a crucial component within a rod mill, the liner's primary function is to protect the drum wall from the direct impact and abrasion of the steel rods and slag. However, with the increased height of the steel rods during impact, the impact force and wear on the liner also increase, leading to a significant reduction in liner lifespan and the need for frequent replacement. This, in turn, increases equipment maintenance costs and production downtime.
[0005] In response to the above problems, there is an urgent need in the market for a rod mill that can effectively improve the efficiency of steel slag crushing and purification while reducing liner wear and maintenance costs. Utility Model Content
[0006] The present invention aims to provide a rod mill for crushing and purifying steel slag, so as to solve the problems of high damage to the liner and high maintenance cost when increasing the internal throwing height of steel rods in existing rod mills.
[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a rod mill for crushing and purifying steel slag, comprising a drum, a drive assembly, a front end plate, and a rear end plate, wherein the front end plate and the rear end plate are respectively connected to the two ends of the drum, the front end plate is provided with a feed inlet, the drive assembly is connected to the drum, and a discharge assembly is provided in the middle of the drum, characterized in that: an auxiliary assembly is connected inside the drum, the auxiliary assembly includes a connecting block, multiple fixed rods, and throwing plates, the connecting block is connected to the front end plate and located inside the drum, the multiple fixed rods are connected to the connecting block and located on the same plane, there is a certain distance between adjacent fixed rods, the multiple throwing plates are horizontally connected to the liner, the multiple throwing plates are connected one-to-one with the multiple fixed rods, and each throwing plate is provided with throwing blocks.
[0008] The working principle of this utility model is as follows: When the rod mill starts to operate, the steel rods inside the drum move with the rotation of the drum. At this time, the fixed rod also moves with the drum. When the steel rod slides into the throwing block, it is raised in height as the throwing plate rotates. When the throwing block can no longer hold the steel rod, the steel rod falls to the bottom of the drum to crush and grind the steel slag.
[0009] The beneficial effects of this utility model are as follows: 1. By installing auxiliary components inside the drum, especially the design of the throwing blocks on the throwing plate, the steel rods can be thrown higher inside the rod mill, thereby improving the crushing efficiency of steel slag; 2. The design of the auxiliary components not only improves the crushing efficiency but also reduces the direct impact of the steel rods on the liner, extending the service life of the liner and reducing maintenance costs; 3. A screen is installed at the discharge port, which can perform preliminary screening of the crushed steel slag and improve the purification effect; 4. By reducing the wear of the liner, the service life of the equipment is extended, and the cost of equipment replacement and maintenance is reduced.
[0010] Furthermore, the discharge assembly includes a discharge port and an annular sleeve. The discharge port is located in the middle of the drum, and a screen is provided at the discharge port. The annular sleeve is fitted onto the middle of the drum, covering the discharge port, and a discharge channel is provided at the bottom of the annular sleeve. The annular sleeve design allows the ground steel slag exiting the discharge port to be collected in a concentrated manner, preventing splashing.
[0011] Furthermore, there are three fixing rods, and the angle between the fixing rods is 120°. This angle ensures that the steel rod will not come into contact with the fixing rods when it falls.
[0012] Furthermore, the throwing blocks are arranged in two rows on the throwing plate, with a certain distance between the upper and lower rows of throwing blocks. This double-row arrangement allows the throwing blocks to hold more steel bars at once.
[0013] Furthermore, the throwing block is arc-shaped. This shape allows the throwing block to better hold the steel bar in place.
[0014] Furthermore, the length of the throwing plate is consistent with the length of the inner wall of the drum. By setting the length of the throwing plate, the steel bar can be clamped and dropped horizontally, further improving the crushing of steel slag. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of a rod mill for crushing and purifying steel slag according to the present invention;
[0016] Figure 2 for Figure 1 Front sectional view;
[0017] Figure 3 for Figure 1 Side sectional view;
[0018] Figure 4 for Figure 2 Side view of the middle shovel plate. Detailed Implementation
[0019] The following detailed description illustrates the specific implementation method:
[0020] The reference numerals in the accompanying drawings of the instruction manual include: feed channel 1, bearing 2, roller 3, annular sleeve 4, base 5, discharge channel 6, reducer 7, liner 8, throwing block 9, throwing plate 10, connecting block 11, and fixing rod 12.
[0021] The basic implementation examples are as follows: Figure 1 -Appendix Figure 4 As shown: A rod mill for crushing and purifying steel slag includes a drum 3, a front end plate, a rear end plate, and auxiliary components. Bearings 2 are connected to both ends of the drum 3 and are fixedly connected to a base 5. The front end plate is fixedly connected to the left end of the drum 3 and has a feed inlet. The feed inlet is connected to a feed channel 1 via the bearings 2. A gear is annularly mounted on the left outer wall of the drum 3. A reducer 7 is fixedly connected to the base 5, and the output shaft of the reducer 7 is connected to a drive gear, which meshes with the gear. A discharge port is located in the middle of the drum 3, and a screen is fixedly connected to the discharge port. An annular sleeve 4 is slidably fitted in the middle of the drum 3, covering the discharge port. The bottom of the annular sleeve 4 is connected to a discharge port. Channel 6, the auxiliary components include a connecting block 11, three fixing rods 12 and a throwing plate 10. The connecting block 11 is detachably connected to the front end plate and located inside the roller 3. The three fixing rods 12 are fixedly connected to the connecting block 11 and are located on the same plane. The included angle between the fixing rods 12 is 120°. The three throwing plates 10 are horizontally and detachably connected to the liner plate 8. The length of the throwing plate 10 is the same as the length of the inner wall of the roller 3. The three throwing plates 10 and the three fixing rods 12 are fixedly connected one-to-one. Throwing blocks 9 are evenly and horizontally fixedly connected on the throwing plate 10. The throwing blocks 9 are arc-shaped and are arranged in two rows on the throwing plate 10. There is a certain distance between the upper row of throwing blocks 9 and the lower row of throwing blocks 9.
[0022] The specific implementation process is as follows: When the rod mill starts to operate, the steel rods inside the drum 3 move with the rotation of the drum 3. At this time, the fixed rod 12 also moves with the drum 3. When the steel rod slides into the throwing block 9, it is raised in height as the throwing plate 10 rotates. When the throwing block 9 can no longer hold the steel rod, the steel rod falls to the bottom of the drum 3 to crush and grind the steel slag.
[0023] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.
Claims
1. A rod mill for crushing and purifying steel slag, comprising a drum, a drive assembly, a front end plate, and a rear end plate, wherein the front end plate and the rear end plate are respectively connected to both ends of the drum, the front end plate is provided with a feed inlet, the drive assembly is connected to the drum, and a discharge assembly is provided in the middle of the drum, characterized in that: The roller is connected to an auxiliary component, which includes a connecting block, multiple fixing rods and a throwing plate. The connecting block is connected to the front end plate and located inside the roller. The multiple fixing rods are connected to the connecting block and located on the same plane. There is a certain distance between adjacent fixing rods. The multiple throwing plates are horizontally connected to the liner plate. The multiple throwing plates are connected to the multiple fixing rods one by one. Each throwing plate is equipped with a throwing block.
2. The rod mill for crushing and purifying steel slag according to claim 1, characterized in that: The discharge assembly includes a discharge port and an annular sleeve. The discharge port is located in the middle of the drum and a screen is provided at the discharge port. The annular sleeve is fitted onto the middle of the drum and covers the discharge port. A discharge channel is provided at the bottom of the annular sleeve.
3. A rod mill for crushing and purifying steel slag according to claim 2, characterized in that: There are three fixing rods, and the included angle between the fixing rods is 120°.
4. A rod mill for crushing and purifying steel slag according to claim 3, characterized in that: The throwing blocks are arranged in two rows on the throwing plate, with a certain distance between the upper row of throwing blocks and the lower row of throwing blocks.
5. A rod mill for crushing and purifying steel slag according to claim 4, characterized in that: The projectile is arc-shaped.
6. A rod mill for crushing and purifying steel slag according to claim 5, characterized in that: The length of the throwing plate is the same as the length of the inner wall of the drum.