Ladle filler sand collecting device in continuous casting process
By designing a continuous casting process dredging sand collection device that includes a dredging sand receiving hopper and remote control operation, the problems of time-consuming, labor-intensive, and safety hazards of existing devices are solved. This achieves rapid and safe dredging sand collection, reduces the oxygen content of molten steel, and improves the purity of molten steel and operational safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-23
- Publication Date
- 2026-04-03
AI Technical Summary
Existing sand collection devices are time-consuming, labor-intensive, and pose safety hazards, leading to an increase in the oxygen content of molten steel, which affects the quality of bearing steel and production costs.
Design a collection device that includes a sand receiving hopper, a crossbeam, a lead screw guide rail, a support, and a movable slide rail. It adopts a metal shell and a refractory castable lining structure, and is driven by a motor to achieve remote control operation, avoiding personnel approaching the hot area.
It enables rapid and safe collection of diversion sand, reduces the oxygen content of molten steel, improves the purity of molten steel, and enhances operational safety and equipment lifespan.
Smart Images
Figure CN224073360U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of iron and steel metallurgical equipment, and in particular to a continuous casting process slag collection device. Background Technology
[0002] In modern continuous casting production of bearing steel, while the technology is highly efficient, it demands extremely high levels of attention to detail. To ensure the smooth flow of molten steel from the ladle into the crystallizer, 20-30 kg of guiding sand is added at the ladle nozzle to guide the steel and prevent premature solidification. However, this process has significant drawbacks. During production, some of the guiding sand can easily enter the crystallizer with the molten steel, increasing the oxygen content of the steel by tens of ppm due to its inherent oxygen content. Since high-grade bearing steel currently has extremely stringent oxygen content requirements (≤6 ppm), the significant increase in oxygen content caused by the guiding sand severely impacts bearing steel quality, reduces bearing fatigue life and reliability, increases scrap rates, and raises production costs. Therefore, improving the guiding sand technology in the continuous casting process of bearing steel to reduce its impact on the oxygen content of the molten steel is of great significance for improving bearing steel quality, ensuring production efficiency, and promoting industry development. How to avoid contamination of the molten steel by the guiding sand will become an urgent technical problem to be solved.
[0003] To solve the above problems, the diversion sand that has been poured into the ladle beforehand is usually drawn out at the beginning of the pouring process. However, the diversion sand collection devices currently used are generally rudimentary and all are manually operated, which is not only time-consuming and labor-intensive, but also poses safety hazards. Utility Model Content
[0004] The purpose of this invention is to provide a continuous casting process slag collection device that addresses the problems of time-consuming, labor-intensive, and safety hazards in existing technologies. This device can quickly and safely collect slag from the ladle nozzle, thereby improving the purity of the molten steel.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A continuous casting process slag collection device includes a slag receiving hopper, a crossbeam, a screw guide rail, a support, and a movable slide rail. The slag receiving hopper is connected to one end of the crossbeam, and the other end of the crossbeam is connected to the screw guide rail, which can move horizontally under the drive of a screw guide rail motor. The screw guide rail is fixed to the top of the support, and the support travels along the movable slide rail, which is located on one side of the tundish.
[0007] The movable slide rail is a track, and the bottom of the bracket is equipped with pulleys.
[0008] The movable slide rail also adopts a lead screw guide rail structure, and the bracket is fixedly connected to the slider on the lead screw guide rail.
[0009] The sand receiving hopper has a two-layer structure consisting of a metal outer shell and a refractory castable lining.
[0010] Compared with the prior art, the beneficial effects of this utility model are:
[0011] 1) This utility model relates to a continuous casting process slag collection device. The slag receiving device is supported by a movable bracket, keeping personnel away from the ladle position, preventing molten steel from splashing and injuring people, and eliminating safety hazards. The equipment is simple, safe and easy to operate, and highly efficient.
[0012] 2) The refractory castable material on the inner wall of the sand receiving hopper serves as insulation, which can extend the service life of the device and reduce external heat radiation, thus facilitating safe operation. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the present invention receiving diverted sand.
[0014] Figure 2 This is a top view of the sand receiving hopper.
[0015] In the diagram: 1. Diversion sand receiving hopper; 2. Crossbeam rod; 3. Screw guide rail; 4. Support; 5. Screw guide rail motor; 6. Moving slide rail; 7. Tundish; 8. Metal shell; 9. Refractory castable lining; 10. Steel ladle; 11. Long nozzle. Detailed Implementation
[0016] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings.
[0017] See Figure 1 , Figure 2 A continuous casting process slag collection device includes a slag receiving hopper 1, a crossbeam 2, a screw guide rail 3, a support 4, and a movable slide rail 6. The slag receiving hopper 1 is connected to one end of the crossbeam 2, and the other end of the crossbeam 2 is connected to the screw guide rail 3, allowing it to move horizontally under the drive of a screw guide rail motor 5. The screw guide rail 3 is fixed to the top of the support 4, and the support 4 travels along the movable slide rail 6, which is located on one side of an tundish 7. The crossbeam 2 is connected to a nut slider on the screw guide rail 3, and the screw guide rail motor 5 drives the nut slider to move, causing the crossbeam 2 to extend and retract laterally.
[0018] As one embodiment, the movable slide rail 6 is a track, and the bottom of the bracket 4 is equipped with pulleys. The pulleys can be driven by a motor or pushed manually. The preferred option is motor drive, which can realize remote control and keep personnel completely away from the heat radiation area, thus achieving safe operation.
[0019] In another embodiment, the movable slide rail 6 also adopts a lead screw guide rail structure, and the bracket 4 is fixedly connected to the slider on the lead screw guide rail. The slider is driven by a motor to move the bracket. This solution can also achieve remote control, keeping personnel completely away from the heat radiation zone and ensuring safe operation.
[0020] The sand receiving hopper 1 has a two-layer structure consisting of a metal outer shell 8 and a refractory castable lining 9.
[0021] In use: The continuous casting process sand collection device is moved to the vicinity of the tundish 7 and ladle 10 via the sliding rail 6, and the crossbeam 2 is extended horizontally via the screw guide rail 3, so that the sand receiving hopper 1 is positioned exactly below the long nozzle 11. The sand receiving hopper 1 collects the sand flowing out when the ladle starts casting. When the sand turns red-hot, the crossbeam 2 is retracted via the screw guide rail 3, and then the support 4 along with the sand receiving hopper 1 is moved away via the sliding rail 6. The end of the crossbeam 2 can be designed as a square slot structure. The upper end of the sand receiving hopper 1 is square with the same size as the square slot, and the bottom is conical. The sand receiving hopper 1 is placed in the square slot at the end of the crossbeam 2. After the continuous casting process sand collection device is removed, the sand receiving hopper 1 can be removed from the crossbeam 2.
Claims
1. A continuous casting process slag collection device, characterized in that, It includes a sand receiving hopper, a crossbeam, a lead screw guide rail, a support, and a movable slide rail. The sand receiving hopper is connected to one end of the crossbeam, and the other end of the crossbeam is connected to the lead screw guide rail, which can move horizontally under the drive of the lead screw guide rail motor. The lead screw guide rail is fixed to the top of the support, and the support travels along the movable slide rail, which is located on one side of the intermediate hopper.
2. The continuous casting process slag collection device according to claim 1, characterized in that, The movable slide rail is a track, and the bottom of the bracket is equipped with pulleys.
3. The continuous casting process slag collection device according to claim 1, characterized in that, The movable slide rail also adopts a lead screw guide rail structure, and the bracket is fixedly connected to the slider on the lead screw guide rail.
4. A continuous casting process slag collection device according to any one of claims 1-3, characterized in that, The sand receiving hopper has a two-layer structure consisting of a metal outer shell and a refractory castable lining.