CN205414390U - Improve row's sediment device of middle bao lian rate of watering of conticaster - Google Patents

Abstract

The utility model discloses a slag discharge device for improving the continuous pouring rate of the tundish of a continuous casting machine. The utility model comprises a back slag discharge port arranged on the back of the enclosure, a side slag discharge port arranged on one side or both sides of the enclosure, and the back slag discharge port directly discharges the slag on the liquid surface to the back overflow basin on the back of the enclosure. The side slag discharge port communicates with the side overflow basin on the side of the enclosure through the slag guide groove to form a slag discharge channel. The utility model adds a side slag outlet and a side overflow basin to the side of the tundish of the continuous casting machine, so as to solve the problem that in the prior art, when the tundish only relies on the slag outlet to discharge the slag, it cannot be discharged due to the tundish and the tundish car. On-line replacement of the back overflow basin will seriously affect the continuous casting rate of the continuous casting machine; in addition, the tundish retains the back slag discharge port, and when an unexpected situation occurs at the side slag discharge port during the casting process, the slag can be discharged from the back slag discharge port Discharge, to provide double protection for the tundish slag discharge work. Therefore, the utility model has the characteristics of simple structure, high tundish continuous casting rate and high reliability.

Description

A slag discharge device for improving the continuous pouring rate of the tundish of the continuous casting machine

technical field

The utility model belongs to the technical field of steelmaking equipment, and relates to a slag discharge device for improving the tundish continuous casting rate of a continuous casting machine with simple structure, high tundish continuous casting rate and high reliability.

Background technique

The tundish of the continuous casting machine in the steelmaking plant of an iron and steel enterprise is a refractory container used in short-process steelmaking. It first receives molten steel poured from the ladle, and then is distributed to each crystallizer by the tundish nozzle. In addition to realizing the continuous pouring of multiple furnaces to store a certain amount of molten steel, stabilizing the injection flow, and realizing the continuous pouring of multiple furnaces, it is more important to promote the floating of inclusions in molten steel, purify molten steel, and reduce the static pressure of molten steel role. However, during the casting process, the tundish often produces slag and other impurities in the molten steel due to various reasons such as refractory materials, ladles, drainage sands, covering agents, etc., and floats on the upper layer of the molten steel. In order to prevent these impurities from affecting the purity of the molten steel and Since the generated slag occupies the capacity of the tundish, the slag in the upper layer of the molten steel should flow from the slag outlet on the back of the tundish to the overflow basin to achieve the purpose of tundish slag discharge.

With the acceleration of the production rhythm, the quick-change tundish technology is applied in the continuous casting production process, which improves the operation rate of the continuous casting machine and greatly increases the number of continuous casting furnaces. The application of quick-change technology makes the number of drawing furnaces in one production process reach 2 to 3 times of the original, or even more. However, as the number of continuous pouring furnaces increases, the amount of slag discharge in the tundish also increases, and the capacity of the slag discharge tank becomes the bottleneck for the realization of quick change technology. However, the tundish slag outlets in the prior art are all provided on the back side, because the capacity of the overflow basin placed on the back side cannot meet the daily production slag discharge requirements, and the ladle and tundish truck The cover of the back overflow basin cannot be replaced online, and because the slag discharge tank is limited by site environmental factors, the back overflow basin cannot be expanded. After the back overflow basin is full, the pouring can only be stopped and the overflow basin replaced before casting. Seriously affect the continuous casting rate of the continuous casting machine and reduce the economic benefits of the enterprise's production.

Utility model content

The purpose of the utility model is to provide a slag discharge device for improving the continuous casting rate of the tundish of a continuous casting machine with simple structure, high tundish continuous casting rate and high reliability.

The purpose of this utility model is achieved in this way, including the enclosure, the back slag discharge port, the side slag discharge port, the slag guide groove, the back overflow basin, and the side overflow basin. The back slag discharge port is arranged on the back of the enclosure , the side slag outlet is arranged on one or both sides of the enclosure, the back slag outlet directly discharges the liquid surface slag to the back overflow basin on the back of the enclosure, and the side slag outlet passes through the slag guide groove It communicates with the side overflow basin on the side of the enclosure to form a slag discharge channel.

The utility model has the following beneficial effects as follows:

1. Change the slag discharge from the back of the tundish in the prior art to the slag discharge from the side of the tundish. By placing a side overflow basin on the side of the tundish to receive the liquid surface slag flowing down from the side of the tundish, due to continuous There is no shelter above the side overflow basin during the casting process, and the side overflow basin filled with slag can be replaced online by using a crane or other lifting mechanism without affecting the slag discharge work of the tundish, thereby effectively improving the continuous casting machine. The pouring rate is more than 2 times;

2. While adding a side slag discharge port in the tundish, the back slag discharge port in the prior art is retained. Under normal circumstances, the side slag discharge port is used first. When an unexpected situation occurs at the side slag discharge port during the casting process, the slag discharge port can be discharged It is discharged from the back slag discharge port, which provides double protection for the tundish slag discharge work and improves the reliability of tundish slag discharge;

3. Further set the level of the back slag outlet of the tundish higher than that of the side slag outlet, so that the slag is automatically preferentially discharged from the side slag outlet under the action of gravity, which is conducive to improving the continuous pouring rate, and when the casting process When an accident occurs at the side slag discharge port, the slag can be discharged from the back slag discharge port, which improves the reliability of slag discharge in the tundish;

3. Further set the shape of the slag discharge port as a bell mouth structure with a narrow top and a wide bottom to reduce the resistance of the slag in the process of flowing and prevent the slag from accumulating on both sides of the slag discharge port to block the slag discharge port.

Therefore, the utility model has the characteristics of simple structure, high tundish continuous casting rate and high reliability.

Description of drawings

Fig. 1 is the structural representation of the utility model

The top view of Fig. 2 Fig. 1;

In the figure: 1-inclusion body, 2-back slag outlet, 3-side slag outlet, 4-slag guide groove, 5-side overflow basin, 6-bracket, 61-lift rod.

detailed description

The utility model will be further described below in conjunction with the accompanying drawings, but the utility model shall not be limited in any way, and any changes or improvements made based on the teaching of the utility model shall belong to the protection scope of the utility model.

As shown in Figures 1 and 2, the utility model includes an enclosure 1, a back slag discharge port 2, a side slag discharge port 3, a slag guide groove 4, a back overflow basin, and a side overflow basin 5. The back slag discharge port 2 is arranged on the back of the enclosure 1, the side slag outlet 3 is arranged on one side or both sides of the enclosure 1, and the back slag outlet 2 directly discharges the liquid surface slag to the back overflow of the back of the enclosure 1 basin, the side slag discharge port 3 communicates with the side overflow basin 5 on the side of the enclosure 1 through the slag guide groove 4 to form a slag discharge channel.

The back slag discharge port 2 and/or the side slag discharge port 3 have a bell mouth structure with a narrow top and a wide bottom.

The opening height of the back slag discharge port 2 is higher than the opening height of the side slag discharge port 3 .

The opening height of the back slag discharge port 2 is 30-70 mm higher than the opening height of the side slag discharge port 3 .

The angle between the overflow channel of the side slag outlet 3 and the outer wall of the enclosure 1 is 70-80°.

One end of the slag guide chute 4 is directly hinged to the bracket 6 and the other end is hinged to the lifting rod 61 of the bracket 6 , and the bottom of the bracket 6 is hinged or fixedly connected to the tundish of the package body 1 .

The lifting rod 61 is a manual rocker type screw lifting rod or a hydraulic, pneumatic or electric screw lifting rod.

The back overflow basin and/or the side overflow basin 5 are provided with hanging lugs outside or on the upper part of the basin body.

Working principle and working process of the utility model:

The tundish in the prior art uses the back slag outlet for slag discharge. During the casting period, due to the shielding of the ladle and the tundish car, the back overflow basin cannot be replaced online, and because the slag discharge tank is limited by site environmental factors, the back overflow basin cannot It cannot be expanded, which seriously affects the continuous casting rate of the continuous casting machine. The utility model adds a side slag discharge port and a corresponding slag guide groove and a side overflow basin on the side of the tundish of the continuous casting machine to receive the tundish from the side The liquid surface scum that flowed down. Since there is no shelter above the side overflow basin during the continuous casting process, the side overflow basin filled with slag can be replaced online by using a crane or other lifting mechanism without affecting the slag discharge work of the tundish, thereby effectively improving the continuous casting process. continuous pouring rate of the casting machine; in addition, the utility model retains the back slag discharge port in the prior art while adding a side slag discharge port in the tundish. Under normal circumstances, the side slag discharge port is preferentially used. When an unexpected situation occurs at the slag discharge port, the slag can be discharged from the back slag discharge port, providing double protection for the tundish slag discharge work and improving the reliability of the tundish slag discharge; further setting the level of the tundish back slag discharge port higher than The horizontal height of the side slag outlet enables the slag to be automatically preferentially discharged from the side slag outlet under the action of gravity. While ensuring the reliability of tundish slag discharge, it is beneficial to improve the continuous pouring rate; further setting the shape of the slag outlet to the upper The narrow and wide bell mouth structure reduces the resistance of the slag in the process of flowing, avoids the accumulation of slag on both sides of the slag discharge port and blocks the slag discharge port, and can also improve the reliability of the slag discharge of the tundish; further, the slag guide groove The bracket is set as a structure with one end hinged and the other end liftable, so that the slag guide tank can be stowed when moving with the tundish truck or replacing the side overflow basin, which not only reduces the occupied space, but also makes the side overflow basin The slag guide groove will not cause obstruction, which is conducive to quick and in-line replacement of the side overflow basin. Therefore, the utility model has the characteristics of simple structure, high tundish continuous casting rate and high reliability.

As shown in Figures 1 and 2, the tundish of a continuous casting machine in a steelmaking plant originally used the back slag discharge port to cooperate with the back overflow basin to discharge slag. In many cases, a back overflow basin is basically filled after about 30 casting furnaces, and it cannot be replaced online. It can only be cast after the back overflow basin is stopped and replaced, and the continuous pouring rate is low. A side slag discharge port 3 is added on the side of the original tundish body 1, and the horizontal opening height of this side slag discharge port 3 is lower than the horizontal opening height of the original back slag discharge port 2 by 50mm, and the side slag discharge port 3 is placed below The side overflow basin 5 is added, and the slag guide tank 4 is supported by the bracket 6 connected with the tundish truck to form a slag discharge channel connected to the side overflow basin 5; at the same time, the original slag guide tank and the back overflow basin are retained on the back of the tundish. When discharging slag from the tundish, under the action of gravity, the slag flows into the side overflow basin 5 from the side slag outlet 3 with a lower horizontal opening through the slag guide groove 4 preferentially under the action of gravity, but the side overflow basin 5 on the side is full , the slag discharge work is temporarily stopped, and the side overflow basin 5 on the side is hoisted away by a crane through the lifting mechanism on the upper part, and a new side overflow basin 5 is replaced to continue the slag discharge work, thereby ensuring continuous casting of the continuous casting machine rate; when an unexpected situation occurs at the side slag discharge port 3 during the casting process, the slag can be discharged from the back slag discharge port 2 without affecting the slag discharge work of the tundish. Then overhaul the unexpected side slag discharge port 3, thereby effectively improving the continuous casting rate of the continuous casting machine and the reliability of the slag discharge process. Through the improvement of the slag discharge device in the middle, the slag discharge work of the tundish no longer becomes a bottleneck restricting the improvement of the continuous pouring rate of the casting machine. Increase production efficiency and reduce production costs.

Claims (8)

1. A slag discharge device for improving the continuous casting rate of the tundish of a continuous casting machine, characterized in that it includes a slag body (1), a back slag discharge port (2), a side slag discharge port (3), and a slag guide groove (4) , a back overflow basin, and a side overflow basin (5), the back slag outlet (2) is arranged on the back of the enclosure (1), and the side slag outlet (3) is arranged on the side of the enclosure (1) On one side or both sides, the back slag outlet (2) directly discharges the liquid surface slag to the back overflow basin on the back of the enclosure (1), and the side slag outlet (3) passes through the slag guide groove (4) It communicates with the side overflow basin (5) on the side of the enclosure (1) to form a slag discharge channel. 2. The slag discharge device for increasing the continuous casting rate of the tundish of the continuous casting machine according to claim 1, characterized in that the back slag discharge port (2) and/or the side slag discharge port (3) are narrow at the top and wide at the bottom bell mouth structure. 3. The slag discharge device for improving the continuous casting rate of the tundish of the continuous casting machine according to claim 1 or 2, characterized in that the opening height of the back slag discharge port (2) is higher than the opening height of the side slag discharge port (3) . 4. The slag discharge device for increasing the continuous pouring rate of the tundish of the continuous casting machine according to claim 3, characterized in that the opening height of the back slag discharge port (2) is 30~ 70mm. 5. The slag discharge device for improving the continuous casting rate of the tundish of the continuous casting machine according to claim 1, characterized in that the overflow channel of the side slag discharge port (3) is at an angle with the outer wall of the tundish (1) It is 70-80°. 6. The slag discharge device for improving the continuous casting rate of the tundish of the continuous casting machine according to claim 1 or 5, characterized in that one end of the slag guide groove (4) is directly hinged to the bracket (6) and the other end is connected to the bracket ( 6) The lifting rod (61) is hinged, and the bottom of the bracket (6) is hinged or fixedly connected to the tundish of the package body (1). 7. The slag discharge device for improving the continuous pouring rate of the tundish of the continuous casting machine according to claim 6, characterized in that the lifting rod (61) is a manual rocker type screw lifting rod or a hydraulic, pneumatic or electric screw lift bar. 8. The slag discharge device for increasing the continuous pouring rate of the tundish of the continuous casting machine according to claim 1, characterized in that the back overflow basin and/or the side overflow basin (5) is outside the basin body or on the basin body upper part Set with lugs.