Water slag filtering equipment for blast furnace slag treatment
By using a spiral-shaped ribbed filter drum and a screen assembly made of corrosion-resistant alloy material in the blast furnace slag treatment equipment, the problem of low solid-liquid separation efficiency under high temperature and high corrosion environment has been solved, and efficient, stable and environmentally friendly blast furnace slag treatment has been achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGDU SHUNDA MACHINERY
- Filing Date
- 2025-03-20
- Publication Date
- 2026-04-24
AI Technical Summary
Existing blast furnace slag processing equipment suffers from low separation efficiency, insufficient equipment stability and durability in high-temperature and highly corrosive environments, leading to resource waste and environmental pollution.
A device with a spiral filter drum and a detachable screen assembly was designed. The spiral ribbed filter drum and detachable screen assembly enable efficient separation of solid particles and filtrate in blast furnace slag. High-temperature and corrosion-resistant alloy materials and a variable frequency motor are used to improve the stability and durability of the equipment.
It achieves efficient and thorough separation of solid particles and filtrate, improves processing efficiency and equipment stability, reduces energy consumption and noise, and extends equipment life.
Smart Images

Figure CN224156503U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of blast furnace slag treatment, and in particular to a water slag filtration device for blast furnace slag treatment. Background Technology
[0002] In blast furnace ironmaking, blast furnace slag, as a byproduct of the process, has always been a crucial issue for the steel industry in terms of its treatment and utilization. Blast furnace slag is not only abundant but also contains various valuable components, though it also exhibits high temperature and corrosiveness. Traditional blast furnace slag treatment methods often employ simple sedimentation or filtration, which suffer from low filtration efficiency and incomplete separation of solid particles from the filtrate, leading to resource waste and environmental pollution.
[0003] With the continuous advancement of industrial technology, the requirements for blast furnace slag processing equipment are also increasing. Existing blast furnace slag processing equipment has many shortcomings in terms of the separation effect between solid particles and filtrate, equipment stability, and durability. In particular, when dealing with high-temperature and highly corrosive blast furnace slag, the damage rate and maintenance costs of the equipment increase significantly.
[0004] Therefore, it is particularly important to develop a new type of blast furnace slag treatment and slag filtration equipment. This equipment needs to be able to efficiently and thoroughly separate solid particles from filtrate in blast furnace slag, while also possessing high stability and durability to adapt to high-temperature and highly corrosive working environments. Utility Model Content
[0005] To address some of the problems existing in the prior art, this utility model provides a wastewater filtration device with multiple filtration processes. Through optimized structural design, it achieves efficient and thorough separation of solid particles in blast furnace slag from the filtrate, thereby improving the efficiency and quality of blast furnace slag treatment.
[0006] To achieve the above objectives, this utility model provides a water slag filtration device for blast furnace slag treatment, including a water slag filtration device body. The water slag filtration device body includes a support base, which serves as the main structure for bearing and supporting the entire filtration device. A filtration structure is provided on the support base, and a power drive component is connected to the filtration structure. The filtration structure is used to drive the filtration structure to rotate, so as to promote the effective separation of solid particles in blast furnace slag from the filtrate. A water slag inlet pipe is provided above the filtration structure.
[0007] As a further improvement of this utility model, in order to enable the equipment to adapt to different working environments, improve the adaptability and stability of the equipment, and ensure the stability and reliability of the filtration effect, the support base is a frame structure with adjustable feet at the bottom. The height of the feet can be adjusted independently. The upper surface of the support base is provided with a positioning groove. The filter structure is connected to the positioning groove through the positioning component to realize the installation of the filter structure.
[0008] As a further improvement of this utility model, in order to achieve the separation of solid particles and filtrate, and to make the solid particles and filtrate more thoroughly separated, the filtration structure includes a filter drum and a screen assembly. The filter drum is a cylindrical structure with spiral ribs arranged along the axial direction on its outer wall to promote the separation of solid particles and filtrate. One end of the filter drum is connected to a power drive component.
[0009] As a further improvement of this utility model, in order to ensure that the filtered liquid can be discharged smoothly, improve the flexibility and ease of use of the equipment, and ensure the continuity and stability of the filtration effect, the screen assembly is located inside the filter drum. The screen assembly can be detachably installed on the inner wall or bottom of the drum, and the other end of the filter structure is provided with a liquid outlet.
[0010] As a further improvement of this utility model, in order to achieve smooth adjustment of the filter drum speed, improve the flexibility and controllability of the equipment, and enable the equipment to adapt to different processing needs and working conditions, the power drive component is a variable frequency motor, and the variable frequency motor is connected to the filter drum through a reducer and a universal coupling to achieve smooth adjustment of the filter drum speed. The power drive component is also provided with a transmission chain, one end of which is connected to the output shaft of the power drive component, and the other end is connected to the shaft of the filter unit.
[0011] As a further improvement of this utility model, in order to enable long-term stable operation in harsh working environments, improve the durability and stability of the equipment, and extend the service life of the equipment, the screen assembly is made of a high-temperature resistant and corrosion-resistant alloy material.
[0012] The workflow of this utility model is as follows:
[0013] Preparation phase:
[0014] Ensure the water sludge filter unit is correctly installed on the support base, and that the support base's legs are adjusted to the appropriate height to ensure the equipment's stability and levelness. Check that the filter structure is correctly installed in the positioning slot of the support base, and ensure all connecting parts are securely fastened. The power drive unit is connected to the power supply and connected to the filter drum via the reducer and universal coupling; the drive chain is also correctly connected.
[0015] Start-up phase:
[0016] Turn on the power switch of the drive unit and adjust the motor speed according to actual needs. The speed is smoothly transmitted to the filter drum through the reducer and universal coupling. The filter drum starts to rotate, and the spiral ribs set along the axial direction on its outer wall begin to function, promoting the effective separation of solid particles in blast furnace slag from the filtrate.
[0017] Filtering stage:
[0018] Blast furnace slag enters the filtration equipment through the slag inlet pipe, initially contacting the outer wall of the filter drum. Under the rotation of the filter drum, solid particles in the slag are pushed to one end by spiral ribs, while the filtrate flows into the filter drum through the mesh of the screen assembly. The high-temperature and corrosion-resistant alloy material of the screen assembly ensures its stability and durability under harsh operating conditions. The filtrate continues to flow inside the filter drum and is eventually discharged from the equipment through the outlet.
[0019] The beneficial effects of this utility model are as follows:
[0020] High-efficiency filtration and separation: The designed filtration structure, especially the filter drum with spiral ribs and detachable screen assembly, effectively promotes the separation of solid particles from the filtrate in blast furnace slag. This design not only improves filtration efficiency but also ensures complete separation of solid particles from the filtrate, thereby enhancing the quality of the entire blast furnace slag treatment process.
[0021] Flexibility and Adjustability: The support base adopts a frame structure and is equipped with adjustable feet, allowing the equipment to be height-adjusted according to different working environments and needs, ensuring the stability and adaptability of the equipment. Meanwhile, the filter structure, through the cooperation of positioning components and positioning slots, enables quick and easy installation and disassembly, facilitating equipment maintenance and replacement.
[0022] Energy saving and environmental protection: The power drive component uses a variable frequency motor, which is connected to the filter drum through a reducer and universal coupling, achieving smooth adjustment of the filter drum speed. This design not only reduces energy consumption but also reduces noise and vibration during equipment operation, meeting the requirements of energy saving and environmental protection.
[0023] Durability and reliability: The screen assembly is made of high-temperature and corrosion-resistant alloy materials, which can maintain stable performance in harsh working environments and extend the service life of the equipment. Attached Figure Description
[0024] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings:
[0025] Figure 1 This is a structural diagram of the present invention.
[0026] Figure 2 This is a side view of the present invention.
[0027] Figure 3 This is a top view of the structure of this utility model.
[0028] The components include: 1. Support base; 2. Filter structure; 3. Power drive component; 4. Water slag inlet pipe; 5. Support legs; 6. Positioning groove; 7. Filter drum; 8. Screen assembly; 9. Variable frequency motor; 10. Transmission chain; and 11. Liquid outlet. Detailed Implementation
[0029] To enable those skilled in the art to better understand the technical solutions in this application, the following description is provided in conjunction with the appendix. Figure 1-3 The present invention will be further described below. The following embodiments are only used to illustrate the technical solution of the present invention more clearly, and should not be used to limit the protection scope of the present invention.
[0030] like Figure 1-3 The illustrated water slag filtration device for blast furnace slag treatment includes a water slag filtration device body, which includes a support base 1. The support base 1 serves as the main structure for supporting the entire filtration device. A filtration structure 2 is provided on the support base 1. A power drive component 3 is connected to the filtration structure 2 to drive it to rotate, thereby promoting the effective separation of solid particles in the blast furnace slag from the filtrate. A water slag inlet pipe 4 is provided above the filtration structure 2.
[0031] The support base 1 is a frame structure with adjustable legs 5 at the bottom. The height of the legs 5 can be adjusted independently. The upper surface of the support base 1 is provided with a positioning groove 6. The filter structure 2 is connected to the positioning groove 6 through a positioning component to realize the installation of the filter structure 2.
[0032] The filter structure 2 includes a filter drum 7 and a screen assembly 8. The filter drum 7 is a cylindrical structure with spiral ribs arranged along the axial direction on its outer wall to promote the separation of solid particles from the filtrate. One end of the filter drum 7 is connected to the power drive component 3.
[0033] The screen assembly 8 is located inside the filter drum 7. The screen assembly 8 can be detachably installed on the inner wall or bottom of the drum. The other end of the filter structure 2 is provided with a liquid outlet 11.
[0034] The power drive component 3 is a variable frequency motor 9, and the variable frequency motor 9 is connected to the filter drum 7 through a reducer and a universal coupling to achieve smooth adjustment of the rotation speed of the filter drum 7. The power drive component 3 is also provided with a transmission chain 10, one end of which is connected to the output shaft of the power drive component 3, and the other end is connected to the shaft of the filter unit.
[0035] The screen assembly 8 is made of a high-temperature resistant and corrosion-resistant alloy material.
[0036] The workflow of this utility model is as follows:
[0037] Preparation phase:
[0038] Ensure the main body of the water sludge filter is correctly installed on the support base 1, and that the support legs 5 of the support base 1 are adjusted to the appropriate height as needed to ensure the stability and levelness of the equipment. Check that the filter structure 2 is correctly installed in the positioning groove 6 of the support base 1, and ensure that all connecting parts are securely fastened. The power drive unit 3 is powered on and connected to the filter drum 7 via a reducer and universal coupling, and the transmission chain 10 is also correctly connected.
[0039] Start-up phase:
[0040] Turn on the power switch of the power drive unit 3, adjust the motor speed according to actual needs, and smoothly transmit the speed to the filter drum 7 through the reducer and universal coupling. The filter drum 7 starts to rotate, and the spiral ribs arranged axially on its outer wall begin to function, promoting the effective separation of solid particles in blast furnace slag from the filtrate.
[0041] Filtering stage:
[0042] Blast furnace slag enters the filtration equipment through the slag inlet pipe 4, initially contacting the outer wall of the filter drum 7. Under the rotation of the filter drum 7, solid particles in the blast furnace slag are pushed to one end of the filter drum 7 by the spiral ribs, while the filtrate flows into the filter drum 7 through the mesh of the screen assembly 8. The high-temperature and corrosion-resistant alloy material of the screen assembly 8 ensures its stability and durability under harsh operating conditions. The filtrate continues to flow inside the filter drum 7 and is finally discharged outside the equipment through the outlet 11.
[0043] This utility model is not limited to the above embodiments. Based on the technical solutions disclosed in this utility model, those skilled in the art can make some substitutions and modifications to some of the technical features without creative labor, and these substitutions and modifications are all within the protection scope of this utility model.
Claims
1. A slag filtration device for blast furnace slag treatment, comprising a slag filtration device body, characterized in that, The main body of the water slag filtration device includes a support base (1), which serves as the main structure for bearing and supporting the entire filtration device. A filtration structure (2) is provided on the support base (1), and a power drive component (3) is connected to the filtration structure (2). A water slag inlet pipe (4) is provided above the filtration structure (2). The filter structure (2) includes a filter drum (7) and a screen assembly (8). The filter drum (7) is a cylindrical structure with spiral ribs arranged along the axial direction on its outer wall to promote the separation of solid particles from the filtrate. One end of the filter drum (7) is connected to the power drive component (3). The screen assembly (8) is located inside the filter drum (7). The screen assembly (8) can be detachably installed on the inner wall or bottom of the drum. The other end of the filter structure (2) is provided with a liquid outlet (11). The screen assembly (8) is made of high temperature resistant and corrosion resistant alloy material.
2. The slag filtration device for blast furnace slag treatment according to claim 1, characterized in that, The support base (1) is a frame structure with adjustable legs (5) at its bottom. The height of the legs (5) can be adjusted independently. The upper surface of the support base (1) is provided with a positioning groove (6). The filter structure (2) is connected to the positioning groove (6) through the positioning component to realize the installation of the filter structure (2).
3. A slag filtration device for blast furnace slag treatment according to claim 1, characterized in that, The power drive component (3) is a variable frequency motor (9), and the variable frequency motor (9) is connected to the filter drum (7) through a reducer and a universal coupling to achieve smooth adjustment of the speed of the filter drum (7). The power drive component (3) is also provided with a transmission chain (10), one end of which is connected to the output shaft of the power drive component (3), and the other end is connected to the shaft of the filter unit.