Blast furnace slag sluice anti-blocking structure

Abstract

The utility model relates to a blast furnace slag sluice anti-blocking structure which comprises a cold water tank, a slag sluice, a trickling filter and a cooling tower, a main pipeline is arranged between a water outlet of the cold water pool and a slag inlet of the slag sluice, an auxiliary pipe is arranged on the main pipeline, and an outlet of the auxiliary pipe is located at the turning position and the easily-blocked position of the slag sluice and points to the flowing direction of water slag; a water slag outlet of the slag flushing trough is communicated with an inlet of the trickling filter through a pipeline I, a water outlet of the trickling filter is communicated with a water inlet of the cooling tower through a pipeline II, and a water outlet of the cooling tower is communicated with a water inlet of the cold water pool through a pipeline III. According to the utility model, the main pipeline is arranged, and water in the cold water tank is introduced into the slag flushing trough to scatter and quench molten slag; an auxiliary pipe is arranged on the main pipeline, an outlet of the auxiliary pipe is located at the turning position and the easily-blocked position of the slag sluice and points to the flowing direction of water slag, power is provided, slag is prevented from being accumulated at the turning position of the slag sluice, and therefore water return caused by blocking of the slag sluice is completely eradicated.

Description

Technical Field

[0001] This utility model belongs to the field of blast furnace slag flushing technology, and particularly relates to a blast furnace slag flushing ditch anti-clogging structure. Background Technology

[0002] The principle of blast furnace slag flushing is that during the blast furnace smelting process, when the molten slag flows into the slag channel, it is dispersed by a water flow with a certain impact force, quenched, and cooled to form granular slag. In actual production, due to the excessive length of the slag channel, when the furnace temperature is low (silicon content of pig iron is less than 0.25%) or the slag volume is large (slag-to-iron ratio is greater than 380 kg / t), the molten slag tends to accumulate at the bends of the slag channel during flushing, clogging the channel and causing backflow. Utility Model Content

[0003] The purpose of this utility model is to provide a structure for preventing clogging of blast furnace slag flushing channels, so as to solve the technical problems mentioned in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A blast furnace slag flushing ditch anti-clogging structure includes: a cold water pool, a slag flushing ditch, a trickling filter, and a cooling tower; a main pipe is provided between the outlet of the cold water pool and the inlet of the slag flushing ditch, and an auxiliary pipe is provided on the main pipe. The outlet of the auxiliary pipe is located at the bend and the easily clogged part of the slag flushing ditch and points in the direction of water and slag flow; the water and slag outlet of the slag flushing ditch is connected to the inlet of the trickling filter through a first pipe, the outlet of the trickling filter is connected to the inlet of the cooling tower through a second pipe, and the outlet of the cooling tower is connected to the inlet of the cold water pool through a third pipe.

[0006] According to a further improvement of this utility model, the main pipeline is equipped with a slag flushing pump and a control valve one, and the auxiliary pipeline is equipped with a control valve two.

[0007] According to a further improvement of this utility model, the second control valve is an electric gate valve.

[0008] According to a further improvement of this utility model, nozzles are provided at the outlets of both the main pipe and the auxiliary pipe.

[0009] According to a further improvement of this utility model, the second pipeline is equipped with an upper tower pump and a control valve three; the third pipeline is equipped with a power pump three and a control valve four.

[0010] According to a further improvement of this utility model, the water sludge in the trickling filter is loaded into a transport vehicle by an overhead crane.

[0011] According to a further improvement of this utility model, a manual gate valve is also provided on the auxiliary pipe.

[0012] The beneficial effects of adopting the above technical solution are as follows:

[0013] This utility model has a main pipeline that introduces water from the cold water pool into the slag flushing ditch to disperse and quench the molten slag. An auxiliary pipe is provided on the main pipeline. The outlet of the auxiliary pipe is located at the bend and easily blocked part of the slag flushing ditch and points in the direction of water and slag flow. It provides power and prevents the molten slag from accumulating at the bend of the slag flushing ditch, thereby preventing backflow of water due to blockage.

[0014] This invention comprises a trickling filter, a cooling tower, a main pipeline, and auxiliary pipes. Water is sprayed through nozzles, carrying water sludge through a flushing ditch and pipeline one into the trickling filter. The water sludge in the trickling filter is then transported by overhead crane to a truck for sale. The filter water enters the cooling tower through pipeline two, and after being cooled by the cooling tower, it enters the cold water pool through pipeline three. This constitutes a water recycling system, saving water resources. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] The markings in the diagram are as follows: 1. Cold water pool, 2. Slag flushing ditch, 3. Trickling filter, 4. Cooling tower, 5. Main pipeline, 6. Auxiliary pipeline, 7. Pipeline 1, 8. Pipeline 2, 9. Pipeline 3, 10. Slag flushing pump, 11. Control valve 1, 12. Control valve 2, 13. Nozzle, 14. Upper tower pump, 15. Control valve 3, 16. Power pump 3, 17. Control valve 4, 18. Transport vehicle. Detailed Implementation

[0017] To better understand the purpose, structure, and function of this utility model, a clear and complete description of this utility model will be provided below in conjunction with the accompanying drawings.

[0018] like Figure 1 The diagram illustrates an anti-clogging structure for a blast furnace slag flushing ditch, comprising: a cold water pool 1, a slag flushing ditch 2, a drip filter 3, and a cooling tower 4. The slag inlet of the slag flushing ditch 2 is connected to the slag outlet of the blast furnace, used to receive molten slag from the blast furnace. A main pipe 5 is provided between the outlet of the cold water pool 1 and the inlet of the slag flushing ditch 2, used to introduce water from the cold water pool 1 into the slag flushing ditch 2 to disperse and quench the molten slag. To prevent molten slag from accumulating at the bends of the slag flushing ditch 2 and clogging it, an auxiliary pipe 6 is provided on the main pipe 5. The outlet of the auxiliary pipe 6 is located at the bends and easily clogged areas of the slag flushing ditch 2 and points in the direction of water-slag flow; that is, the auxiliary pipe 6 directly impacts the easily clogged areas of the slag flushing ditch 2, thereby preventing backflow due to clogging; furthermore, the outlet of the auxiliary pipe 6 is inclined downwards to ensure the fluidity of the water-slag.

[0019] To increase the impact force of the water in the cold water tank 1, a slag flushing pump 10 is installed on the main pipeline 5 to provide power. A control valve 11 is also installed on the main pipeline 5 to control the water flow. A control valve 12 is installed on the auxiliary pipeline 6 to control its start and stop. At least two auxiliary pipelines 6 are provided. Furthermore, the control valve 12 is an electric gate valve, allowing the control system to directly control the opening and closing of the auxiliary pipelines 6. A manual gate valve is also installed on the auxiliary pipeline 6 for easy operation by on-site workers. In this embodiment, the water temperature in the cold water tank 1 is controlled within the range of less than 50℃ in summer and 68-78℃ in winter. The pressure range of the slag flushing pump 10 is 0.2-0.3MPa. The diameter of the main pipeline 5 is 600mm, the diameter of the auxiliary pipeline 6 is 80mm, and the average flow rate of the cold water in the main pipeline 5 is 2500m³. 3 / h, the water replenishment volume of auxiliary pipe 6 is 20m³. 3 / h. Furthermore, nozzles 13 are provided at the outlets of both the main pipe 5 and the auxiliary pipe 6.

[0020] The slag outlet of the flushing ditch 2 is connected to the inlet of the trickling filter 3 via pipe 7. The outlet of the trickling filter 3 is connected to the inlet of the cooling tower 4 via pipe 8. Pipe 8 is equipped with an upper tower pump 14 and a control valve 15. The upper tower pump 14 provides power to the filter water in the trickling filter 3 to enter the cooling tower 4. The outlet of the cooling tower 4 is connected to the inlet of the cold water pool 1 via pipe 9. Pipe 9 is equipped with a power pump 16 and a control valve 17. Furthermore, the slag in the trickling filter 3 is loaded into a transport vehicle 18 by an overhead crane. Water is sprayed out through nozzle 13 from the main pipe 5 and auxiliary pipe 6, which carries water sludge through the sludge flushing ditch 2 and pipe 1 to the trickling filter 3. The water sludge in the trickling filter 3 is transported to the external transport vehicle 18 by the overhead crane. The filter water enters the cooling tower 4 through pipe 2 8. After being cooled by the cooling tower 4, it enters the cold water pool 1 through pipe 3 9. This constitutes the recycling of water and saves water resources.

[0021] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A structure for preventing clogging in a blast furnace slag flushing ditch, characterized in that: It includes: The cold water pool (1), the slag flushing ditch (2), the trickling filter (3), and the cooling tower (4) are provided. A main pipe (5) is provided between the outlet of the cold water pool (1) and the inlet of the slag flushing ditch (2). An auxiliary pipe (6) is provided on the main pipe (5). The outlet of the auxiliary pipe (6) is located at the bend and the easily blocked part of the slag flushing ditch (2) and points in the direction of water and slag flow. The water and slag outlet of the slag flushing ditch (2) is connected to the inlet of the trickling filter (3) through pipe one (7). The outlet of the trickling filter (3) is connected to the inlet of the cooling tower (4) through pipe two (8). The outlet of the cooling tower (4) is connected to the inlet of the cold water pool (1) through pipe three (9).

2. The anti-clogging structure for blast furnace slag flushing channels according to claim 1, characterized in that: The main pipe (5) is equipped with a slag flushing pump (10) and a control valve one (11), and the auxiliary pipe (6) is equipped with a control valve two (12).

3. The anti-clogging structure for blast furnace slag flushing channels according to claim 2, characterized in that: The control valve 2 (12) is an electric gate valve.

4. The anti-clogging structure for blast furnace slag flushing channels according to claim 1, characterized in that: Both the main pipe (5) and the auxiliary pipe (6) are equipped with nozzles (13) at their outlets.

5. The anti-clogging structure for blast furnace slag flushing channels according to claim 1, characterized in that: The second pipeline (8) is equipped with an upper tower pump (14) and a control valve (15); the third pipeline (9) is equipped with a power pump (16) and a control valve (17).

6. The anti-clogging structure for blast furnace slag flushing channels according to claim 1, characterized in that: The sludge in the trickling filter (3) is loaded into a transport vehicle (18) by an overhead crane.

7. The anti-clogging structure for blast furnace slag flushing channels according to claim 3, characterized in that: The auxiliary pipe (6) is also equipped with a manual gate valve.

Images