Device for reducing water content of water granulated slag

Abstract

The utility model relates to the technical field of blast furnace steelmaking, in particular to a device for reducing water content of water granulated slag, which comprises a belt weigher and a water granulated slag bin positioned above the belt weigher, a slag outlet pipe is fixed on the side wall of the bottom end of the water granulated slag bin, the bottom surface of the water granulated slag bin is an inclined surface, and one side of the bottom surface of the water granulated slag bin close to the slag outlet pipe is low. The side, away from the slag outlet pipe, of the bottom face of the water slag bin is high, and the bottom of the water slag bin is detachably connected with a filter screen assembly for filtering water in water slag. The device has the technical effect of reducing the water content of the water slag.

Description

Technical Field

[0001] The utility model relates to the technical field of steelmaking, in particular to a device for reducing the moisture content of slag. Background Art

[0002] In the process of blast furnace ironmaking, slag is produced. The slag will be transported to the slag powder production line for processing. Some factories adopt a production process in which the slag does not fall to the ground. The slag is directly sent from the slag outlet of the iron-making blast furnace to the slag production line for drying and grinding. This shortens the loading process and avoids pollution to the environment by reverse transportation.

[0003] like Figure 1 As shown, a slag bin holding device comprises a slag bin 1 and a belt scale 12 located below the slag bin 1. The slag produced by the blast furnace enters the slag bin 1. The bottom of the slag bin 1 is open. The belt scale 12 transports the slag, which is measured by the belt scale 12 and then fed into the mill for drying and grinding. The slag is stored and transported by the holding device and the belt scale. Due to the high water content of the slag, a large amount of blast furnace gas is consumed in drying the slag, resulting in a large waste of gas resources. Utility Model Content

[0004] The embodiment of the utility model provides a device for reducing the moisture content of water slag, which has the technical effect of reducing the moisture content of water slag.

[0005] The utility model discloses a device for reducing the moisture content of water slag, which adopts the following technical scheme:

[0006] A device for reducing the moisture content of water slag comprises a belt scale and a water slag bin located above the belt scale, a slag discharge pipe is fixed to the bottom side wall of the water slag bin, the bottom surface of the water slag bin is an inclined surface, the side of the bottom surface of the water slag bin close to the slag discharge pipe is low, and the side of the bottom surface of the water slag bin away from the slag discharge pipe is high, and a filter screen assembly for filtering water in the water slag is detachably connected to the bottom of the water slag bin.

[0007] Furthermore, the filter screen assembly includes a steel wire mesh, a grille plate and a grate bar plate which are arranged in sequence from top to bottom, the grille plate is fixed to the grate bar plate, and the steel wire mesh is fixed to the grille plate by screws.

[0008] Furthermore, an L-shaped first support plate is fixed on the outer wall of the slag bin fixed slag outlet pipe, the bottom of the first support plate supports the grate slats, a connecting plate is fixed to the end of the grate slats away from the first support plate, a first locking bolt is arranged on the connecting plate, the first locking bolt passes through the connecting plate and is threadedly connected to the outer wall of the slag bin.

[0009] Furthermore, a second support plate for supporting the grate slats is hinged on the outer wall of the slag bin away from the first support plate, and a second locking bolt is provided at the bottom of the second support plate. The second locking bolt passes through the second support plate and is threadedly connected to the grate slats.

[0010] Furthermore, a positioning block is fixed to one side of the grate slats close to the first support plate, and a positioning hole for the positioning block to be inserted is provided on the first support plate.

[0011] Furthermore, the slag discharge pipe is a rectangular pipe, and the upper surface of the wire mesh is flush with the bottom wall of the slag discharge pipe.

[0012] Furthermore, a collecting box is provided at the bottom of the slag bin, a collecting box is provided on one side of the belt scale, and a conveying pipe is connected between the collecting box and the collecting box to collect and store the wastewater.

[0013] Compared with the prior art, the utility model has the following technical effects:

[0014] The filter assembly filters the water content of the slag, reduces the water content of the slag entering the mill, reduces the consumption of blast furnace gas, and achieves the purpose of saving production costs. The filter assembly can be detachably installed at the bottom of the slag bin, making it easy to replace the wire mesh. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present invention, constitute a part of the present invention, and do not constitute a limitation of the present invention. In the drawings:

[0016] Figure 1 A structural schematic diagram to embody the relevant technology;

[0017] Figure 2 To embody the overall structural schematic diagram of the utility model;

[0018] Figure 3 A schematic diagram showing the filter assembly of the utility model;

[0019] Figure 4 A cross-sectional schematic diagram of the water slag bin of the utility model is shown;

[0020] Figure 5 A schematic diagram showing the first support plate in the present invention;

[0021] Figure 6 It is a schematic diagram of the connecting plate and the second supporting plate in the present invention.

[0022] Explanation of the accompanying drawings: 1. Water slag bin; 11. Slag discharge pipe; 12. Conveyor belt scale; 2. Filter screen assembly; 21. Wire mesh; 22. Grille plate; 23. Grate bar; 231. Positioning block; 3. First support plate; 31. Positioning hole; 4. Connecting plate; 41. First locking bolt; 5. Second support plate; 6. Fixing block; 61. Articulated shaft; 7. Collecting box; 71. Conveying pipe; 8. Collecting box. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in combination with the implementation mode and the accompanying drawings. Here, the schematic implementation mode of the utility model and its description are used to explain the utility model, but are not used as a limitation of the utility model.

[0024] Reference Figure 2 , Figure 3 and Figure 4 A device for reducing the moisture content of water slag includes a water slag bin 1 and a belt scale 12. The water slag bin 1 is used to hold water slag, and the belt scale 12 weighs and transports the water slag. The water slag bin 1 is located above the belt scale 12. A slag discharge pipe 11 is fixed on the bottom side wall of the water slag bin 1. The slag discharge pipe 11 is a rectangular pipe. The bottom surface of the water slag bin 1 is an inclined surface. The side of the bottom surface of the water slag bin 1 close to the slag discharge pipe 11 is lower, and the side of the bottom surface of the water slag bin 1 away from the slag discharge pipe 11 is higher.

[0025] A filter assembly 2 is installed at the bottom of the slag bin 1. The filter assembly 2 includes a wire mesh 21, a grid plate 22 and a grate bar 23 from top to bottom. The grid plate 22 is fixed to the grate bar 23, and the wire mesh 21 is fixed to the grid plate 22 by screws.

[0026] Reference Figure 4 , Figure 5 and Figure 6 Two first support plates 3 are fixed on the outer wall of the slag bin 1 fixing the slag discharge pipe 11. The two first support plates 3 are respectively located on both sides of the slag discharge pipe 11. The first support plate 3 is an L-shaped plate. The top of the first support plate 3 is fixed to the outer wall of the slag bin 1. The first support plate 3 supports the grate slats 23. A connecting plate 4 is fixed to the end of the grate slats 23 away from the first support plate 3. The connecting plate 4 is provided with a first locking bolt 41. The first locking bolt 41 penetrates the connecting plate 4 and is threadedly connected to the side wall of the slag bin 1. The upper surface of the wire mesh 21 and the bottom surface of the slag discharge pipe 11 are on the same plane, so that the slag on the wire mesh 21 can be discharged from the slag discharge pipe 11.

[0027] A positioning block 231 is fixed to one side of the grate bar 23 close to the first support plate 3. A positioning hole 31 is provided on the first support plate 3. The positioning block 231 is plugged into the positioning hole 31. When installing the filter assembly 2, the positioning block 231 is aligned with the positioning hole 31 and inserted into the positioning hole 31, thereby positioning the filter assembly 2 to prevent the filter assembly 2 from moving on the first support plate 3, thereby increasing the stability of the filter assembly 2.

[0028] Two second support plates 5 are arranged on the side wall of the slag bin 1 away from the first support plate 3, and the two second support plates 5 are respectively located on both sides of the connecting plate 4. Two fixing blocks 6 are fixed on the side wall of the slag bin 1 away from the first support plate 3, and each second support plate 5 corresponds to one fixing block 6. A hinge shaft 61 is fixed on the fixing block 6, and the second support plate 5 is hinged to the hinge shaft 61. The second support plate 5 supports the side of the grate slat 23 away from the first support plate 3, and a second locking bolt is arranged at the bottom of the second support plate 5, and the second locking bolt passes through the second support plate 5 and is threadedly connected to the grate slat 23.

[0029] After the water slag enters the water slag bin 1, water is filtered out from the wire mesh 21 to achieve material-water separation, thereby achieving the purpose of reducing the moisture content of the water slag entering the mill, and further reducing the consumption of blast furnace gas in the process of slag micropowder production.

[0030] Reference Figure 2 A collecting box 7 is provided below the filter assembly 2, and the collecting box 7 collects the filtered water. A collecting box 8 is provided on one side of the belt scale 12. A conveying pipe 71 is fixed on the side wall of the collecting box 7. The conveying pipe 71 is connected to the interior of the collecting box 7. One end of the conveying pipe 71 away from the collecting box 7 is inserted into the collecting box 8, and the water collected by the collecting box 7 is conveyed to the collecting box 8 through the conveying pipe 71.

[0031] The implementation principle of the device for reducing the moisture content of water slag of the utility model is as follows: after the water slag is transported to the water slag bin 1, the water slag is filtered through the wire mesh 21, the moisture in the water slag is filtered and falls into the collection box 7, and then the water slag falls onto the belt scale 12 through the slag discharge pipe 11, and is transported to the next process by the belt scale 12. By filtering the moisture content of the water slag, the moisture content of the water slag entering the mill is reduced, the consumption of blast furnace gas is reduced, and the purpose of saving production costs is achieved.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A device for reducing the moisture content of slag, comprising a belt scale (12) and a slag bin (1) located above the belt scale (12), characterized in that: A slag discharge pipe (11) is fixed to the side wall at the bottom end of the slag bin (1); the bottom surface of the slag bin (1) is an inclined surface; the side of the bottom surface of the slag bin (1) close to the slag discharge pipe (11) is lower, and the side of the bottom surface of the slag bin (1) away from the slag discharge pipe (11) is higher; and a filter screen assembly (2) for filtering water in the slag is detachably connected to the bottom of the slag bin (1).

2. The device for reducing the moisture content of slag according to claim 1, characterized in that: The filter screen assembly (2) comprises a steel wire screen (21), a grid plate (22) and a grate strip plate (23) which are arranged in sequence from top to bottom. The grid plate (22) is fixed to the grate strip plate (23), and the steel wire screen (21) is fixed to the grid plate (22) by screws.

3. The device for reducing the moisture content of slag according to claim 2, characterized in that: An L-shaped first support plate (3) is fixed to the outer wall of the slag bin (1) fixing the slag discharge pipe (11), the bottom of the first support plate (3) supports the grate strips (23), a connecting plate (4) is fixed to one end of the grate strips (23) away from the first support plate (3), a first locking bolt (41) is provided on the connecting plate (4), and the first locking bolt passes through the connecting plate (4) and is threadedly connected to the outer wall of the slag bin (1).

4. The device for reducing the moisture content of slag according to claim 3, characterized in that: A second support plate (5) for supporting the grate strips (23) is hingedly connected to an outer wall of the slag bin (1) away from the first support plate (3); a second locking bolt is provided at the bottom of the second support plate (5); the second locking bolt passes through the second support plate (5) and is threadedly connected to the grate strips (23).

5. The device for reducing the moisture content of slag according to claim 3, characterized in that: A positioning block (231) is fixed to one side of the grate strip (23) close to the first support plate (3), and a positioning hole (31) for the positioning block (231) to be inserted is provided on the first support plate (3).

6. The device for reducing the moisture content of slag according to claim 2, characterized in that: The slag discharge pipe (11) is a rectangular pipe, and the upper surface of the steel wire mesh (21) is flush with the bottom wall inside the slag discharge pipe (11).

7. The device for reducing the moisture content of slag according to claim 1 or 2, characterized in that: A collecting box (7) is provided at the bottom of the slag bin (1), a collecting box (8) is provided on one side of the belt scale (12), and a conveying pipe (71) is connected between the collecting box (7) and the collecting box (8).

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