Blast furnace slag treatment equipment

Abstract

The utility model relates to blast furnace slag treatment equipment which comprises a sedimentation tank and a filter tank which are adjacently arranged, a partition plate is arranged between the sedimentation tank and the filter tank, a through hole is formed in the upper portion of the partition plate to communicate the sedimentation tank with the filter tank, a filter tank is arranged at the position of the through hole in the filter tank, and a scum filtering component is arranged above the filter tank. The scum filtering component circularly rotates to convey the scum in the filter tank into the scum removing box arranged on one side, and the scum can be further drained in the scum removing box; the scum filtering assembly comprises a circulating conveying belt and a plurality of scum salvaging hoppers arranged on the circulating conveying belt in an array mode in the movement direction, the circulating movement of the circulating conveying belt comprises a scum salvaging section, a draining section and a scum discharging section, the scum salvaging section is parallel to the filter tank, and the scum salvaging hoppers located in the scum salvaging section horizontally move in the filter tank to salvage scum; the device is good in using effect, scum can be removed in time, the solid content of the scum flushing circulating water is further reduced, and meanwhile labor resources are saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to blast furnace slag treatment technical field, concretely is a kind of blast furnace slag treatment equipment. BACKGROUND

[0002] The molten slag produced by blast furnace smelting is one of the main solid wastes produced by steel plants, and the red-hot slag is flushed with pressure water, and the slag is rapidly granulated into sand-like particles after being flushed with pressure water. After the sand-like particles containing water are separated from the slag, the slag flushing water can be recycled, and the slag can be used as a production raw material for industrial materials. When the slag water separation is realized by using the water slag precipitation method, the slag water mixture is precipitated in the sedimentation tank, and then the slag flushing water flows into the filter tank for further purification. The water surface of the sedimentation tank will have floating slag flowing into the filter tank with the slag flushing water. Chinese patent CN205473843U discloses an energy-saving and efficient blast furnace hydraulic slag flushing system, and a slidingly connected U-shaped floating slag filtering groove is arranged at the inlet of the second sedimentation tank. However, this patent has the problem of floating slag accumulation, which not only affects the circulation filtering speed of the slag flushing water, but also causes the floating slag particles to enter the next stage of the treatment system due to long-term accumulation. At the same time, manual removal is inconvenient, the environment is harsh, and there are safety problems. Therefore, in view of the above problems, the present application provides a blast furnace slag treatment equipment capable of filtering out floating slag. SUMMARY

[0003] The utility model aims at providing a kind of blast furnace slag treatment equipment capable of filtering out floating slag, to solve the problems raised in the above background.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0005] A blast furnace slag treatment equipment comprises a sedimentation tank and a filter tank arranged adjacent to each other, a partition is arranged between the sedimentation tank and the filter tank, a through hole is arranged on the partition to communicate the sedimentation tank and the filter tank, a filtering groove is arranged at the through hole in the filter tank, a floating slag filtering assembly is arranged above the filtering groove, and the floating slag filtering assembly rotates circularly to transport the floating slag in the filtering groove to a floating slag water removal tank arranged on one side.

[0006] The blast furnace slag treatment equipment described above, the floating slag filtering assembly comprises a driving roller, a driven roller, an adjusting roller and a circulating conveyor belt, a plurality of slag scoops are arranged on the circulating conveyor belt in an array along the movement direction, the circulating movement of the circulating conveyor belt is arranged as a slag scooping section, a water draining section and a slag discharging section, the slag scooping section is arranged parallel to the filtering groove, the driven roller and the adjusting roller are arranged at both ends of the filtering groove, and the slag scoops in the slag scooping section move horizontally in the filtering groove.

[0007] The water draining section of the blast furnace slag treatment device is arranged obliquely, the driving roller is arranged above the driven roller obliquely and outside the filter tank, and the dross water removal tank is connected to the end of the driving roller.

[0008] The water draining section of the blast furnace slag treatment device is arranged obliquely, the driving roller is arranged above the driven roller obliquely and outside the filter tank, and the dross water removal tank is connected to the end of the driving roller.

[0009] The water draining section of the blast furnace slag treatment device is arranged obliquely, the driving roller is arranged above the driven roller obliquely and outside the filter tank, and the dross water removal tank is connected to the end of the driving roller.

[0010] The water draining section of the blast furnace slag treatment device is arranged obliquely, the driving roller is arranged above the driven roller obliquely and outside the filter tank, and the dross water removal tank is connected to the end of the driving roller.

[0011] The water draining section of the blast furnace slag treatment device is arranged obliquely, the driving roller is arranged above the driven roller obliquely and outside the filter tank, and the dross water removal tank is connected to the end of the driving roller.

[0012] The water draining section of the blast furnace slag treatment device is arranged obliquely, the driving roller is arranged above the driven roller obliquely and outside the filter tank, and the dross water removal tank is connected to the end of the driving roller.

[0013] The water draining section of the blast furnace slag treatment device is arranged obliquely, the driving roller is arranged above the driven roller obliquely and outside the filter tank, and the dross water removal tank is connected to the end of the driving roller.

[0014] The water draining section of the blast furnace slag treatment device is arranged obliquely, the driving roller is arranged above the driven roller obliquely and outside the filter tank, and the dross water removal tank is connected to the end of the driving roller.

[0015] The water draining section of the blast furnace slag treatment device is arranged obliquely, the driving roller is arranged above the driven roller obliquely and outside the filter tank, and the dross water removal tank is connected to the end of the driving roller.

[0016] The blast furnace slag treatment equipment provided by the utility model, through setting the sedimentation tank and the filter tank, further reduces the solid content of the slag flushing water, and provides a good foundation for the reuse of the slag flushing water; the through hole of the communication of the sedimentation tank and the filter tank is provided with the filter groove, the floating slag is blocked at one side of the filter groove, and the filter groove is arranged in the filter tank, the floating slag is gathered in the limited area of the filter groove through the flow of the slag flushing water, and the slag removal operation of the floating slag filtering and removing assembly arranged above the filter groove is facilitated; the floating slag filtering and removing assembly is provided with the circulating conveying belt, the circulating movement of the circulating conveying belt is provided as a slag removal section, a water draining section and a slag discharge section, the slag removal section is arranged in parallel with the filter groove, the slag bucket in the slag removal section moves horizontally in the filter groove to remove the floating slag, and the floating slag flowing into the filter groove can be filtered and collected into the slag bucket in time; after the floating slag in the slag bucket is drained of most of the water in the water draining section, the floating slag is transported into the floating slag water removing tank arranged on one side, the floating slag can be further drained of water in the floating slag water removing tank, the filtered water flows into the filter tank again without polluting the surrounding environment; the use effect of the utility model is good, the floating slag can be removed in time, the solid content of the slag flushing circulating water is further reduced, the reuse of the slag flushing water is facilitated, manual operation in a high temperature environment is avoided, and labor resources are saved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a front view structure schematic diagram of the utility model;

[0018] Figure 2 is a top view structure schematic diagram of the utility model;

[0019] Figure 3 is a sectional view structure schematic diagram of the utility model;

[0020] Figure 4 is a side view structure schematic diagram of the utility model (not containing the sedimentation tank and the partition plate).

[0021] In the drawing: 1, sedimentation tank; 1-1, slag blocking plate; 1-2, support; 2, filter tank; 2-1, filter groove; 2-2, floating slag filtering and removing assembly; 2-2-1, driving roller; 2-2-2, driven roller; 2-2-3, adjusting roller; 2-2-4, circulating conveying belt; 2-2-5, slag bucket; 2-3, floating slag water removing tank; 2-3-1, slag removing door; 2-3-2, drain pipe; 2-4, arc-shaped baffle; 2-5, filter plate; 3, partition plate; 3-1, through hole. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the utility model more clear, the utility model is clearly and completely described below in combination with specific embodiments.

[0023] For example, Figures 1 to 4The illustrated blast furnace slag treatment equipment comprises a sedimentation tank 1 and a filter tank 2 arranged adjacently, a partition plate 3 is arranged between the sedimentation tank 1 and the filter tank 2, the partition plate 3 is provided with a through hole 3-1 to communicate the sedimentation tank 1 and the filter tank 2, the through hole 3-1 is a rectangle located at the upper part of the partition plate 3, and the two ends of the through hole 3-1 are close to the side wall of the tank, a filter groove 2-1 is arranged at the through hole 3-1 in the filter tank 2, the upper edge of the filter groove 2-1 is flush with the filter tank 2, the two ends of the filter groove 2-1 are in contact with the side wall of the filter tank 2, and the lower edge of the filter groove 2-1 is lower than the lower edge of the through hole 3-1, that is, the filter groove 2-1 can block the through hole 3-1, and the filter groove 2-1 is spaced apart from the partition plate 3 to form a dross collection area, a dross filtering assembly 2-2 is arranged above the filter groove 2-1, and the dross filtering assembly 2-2 is circularly rotated to transport the dross collected in the filter groove 2-1 to a dross water removal tank 2-3 arranged on one side.

[0024] As Figures 2 to 4As shown, the scum filtering assembly 2-2 includes a driving roller 2-2-1, a driven roller 2-2-2 and an adjusting roller 2-2-3 arranged in a triangular shape, and a circulating conveying belt 2-2-4 is sleeved on the driving roller 2-2-1, the driven roller 2-2-2 and the adjusting roller 2-2-3 and rotates circularly, a plurality of scum buckets 2-2-5 are arranged on the circulating conveying belt 2-2-4 along the movement direction in an array, the scum bucket 2-2-5 is a triangular bucket body, and each side plate of the bucket body is provided with a water filtering hole; the circulating movement of the circulating conveying belt 2-2-4 is arranged as a scum collecting section, a water draining section and a scum discharging section, the driven roller 2-2-2 and the adjusting roller 2-2-3 are located between the scum collecting section, the driving roller 2-2-1 and the driven roller 2-2-2 are located between the water draining section, and the driving roller 2-2-1 and the adjusting roller 2-2-3 are located between the scum discharging section, the scum collecting section is arranged in parallel above the filter tank 2-1, the driven roller 2-2-2 and the adjusting roller 2-2-3 are arranged at two ends of the filter tank 2-1 respectively, and the scum bucket 2-2-5 in the scum collecting section moves horizontally in the filter tank 2-1; an arc-shaped baffle 2-4 is arranged at the end of the driven roller 2-2-2, the arc-shaped baffle 2-4 is fixed on the filter tank 2, the upper part thereof extends above the driven roller 2-2-2 in an arc shape, and the arc-shaped baffle 2-4 prevents the scum filtered by the circulating conveying belt 2-2-4 from overflowing from the end portion when the scum is too much; the water draining section of the circulating conveying belt 2-2-4 is arranged in an inclination, the driving roller 2-2-1 is located obliquely above the driven roller 2-2-2 and is arranged outside the filter tank 2, the circulating conveying belt 2-2-4 adopts a chain plate type conveying belt, the chain plate is uniformly distributed with water filtering holes, the scum is further drained of water in the water draining section, a scum water removal tank 2-3 is connected at the end of the driving roller 2-2-1, the end of the driving roller 2-2-1 connected with the scum water removal tank 2-3 is open, the scum bucket 2-2-5 pours the scum into the scum water removal tank 2-3 from the opening, a hinged scum removal door 2-3-1 is arranged at the other end of the scum water removal tank 2-3 for removing the accumulated scum, a filter plate and a drain pipe 2-3-2 are arranged at the bottom of the scum water removal tank 2-3, the drain pipe 2-3-2 is connected to above the filter tank 2, the scum is drained in the scum water removal tank 2-3, and the filtered water is discharged into the filter tank 2 without polluting the surrounding environment.

[0025] As Figure 3As shown, in the filter tank 2, a filter plate 2-5 is further arranged below the filter groove 2-1 to further filter the impurities of the slag flushing water, and the water outlet of the filter tank 2 is located below the filter plate 2-5, so that the filtered water can be discharged as soon as possible, and it is ensured that the discharged water has been filtered by the filter plate 2-5. The slag blocking plate 1-1 is arranged at the water inlet of the sedimentation tank 1, is suspended at the water inlet through the support 1-2 fixed on the inner wall of the sedimentation tank 1, and is spaced apart from the water inlet, the slag blocking plate 1-1 can swing to slow down the flow rate, and at the same time, the impact force on the slag blocking plate 1-1 is reduced, and the slag is blocked and accumulated at the bottom of the tank due to gravity; the bottom of the sedimentation tank 1 is lower than the bottom of the filter tank 2, and the bottom of the sedimentation tank 1 is provided with inclined slope angles towards the middle at both ends along the water flow direction, and the slope angle at the water inlet end is greater than that at the water outlet end, which is beneficial to the accumulation of the slag towards the middle and facilitates the slag grabbing of the slag grabbing crane.

[0026] Working principle: after the blast furnace slag is granulated by water quenching, the water slag mixture is separated by sedimentation in the sedimentation tank and filtration in the filter tank. First, the water slag mixture flows into the sedimentation tank, the slag blocking plate is suspended at the inlet of the sedimentation tank, the slag hits the slag blocking plate, the speed is slowed down and falls to the bottom of the sedimentation tank due to gravity, the bottom of the sedimentation tank is provided with a slope surface converging towards the middle, and the slag is deposited along the slope surface to the middle of the bottom under the action of water flow and gravity, facilitating the slag grabbing operation; the sedimented slag flushing water flows into the filter tank, and the light floating slag in the slag flushing water also enters the filter tank, the filter tank is provided with a filter groove at the water inlet, the floating slag is blocked and collected in the filter groove, the floating slag removal assembly is arranged above the filter groove, and the circulating movement of the floating slag removal assembly can timely remove, drain and transport the floating slag to the floating slag draining tank; the slag flushing water further passes through the filter plate arranged in the filter tank, and flows out from the water outlet below the filter plate, and the water slag separation operation is completed.

[0027] In this paper, the principle and implementation mode of the present application are described in detail by using specific examples, and the above examples are only used to help understand the method and its core idea of the present application. Those skilled in the art can modify the technical solutions described in the foregoing examples, or replace some technical features with equivalent ones, without changing the essence of the corresponding technical solutions.

Claims

1. A blast furnace slag treatment plant characterised in that: The application relates to a sedimentation tank (1) and a filter tank (2) which are arranged adjacently, a partition (3) is arranged between the sedimentation tank (1) and the filter tank (2), a through hole (3-1) is arranged on the partition (3) to connect the sedimentation tank (1) and the filter tank (2), a filter groove (2-1) is arranged at the through hole (3-1) in the filter tank (2), a scum filtering assembly (2-2) is arranged above the filter groove (2-1), and the scum filtering assembly (2-2) rotates circularly to transport the scum in the filter groove (2-1) to a scum water removal tank (2-3) arranged on one side.

2. A blast furnace slag treatment apparatus according to claim 1, characterised in that: The scum filtering assembly (2-2) comprises a driving roller (2-2-1), a driven roller (2-2-2), an adjusting roller (2-2-3) and a circulating conveying belt (2-2-4), a plurality of scum ladles (2-2-5) are arranged on the circulating conveying belt (2-2-4) along the movement direction, the circulating movement of the circulating conveying belt (2-2-4) is arranged as a scum collecting section, a water draining section and a scum discharging section, the scum collecting section is arranged between the driven roller (2-2-2) and the adjusting roller (2-2-3), the water draining section is arranged between the driving roller (2-2-1) and the driven roller (2-2-2), the scum discharging section is arranged between the driving roller (2-2-1) and the adjusting roller (2-2-3), the scum collecting section is arranged in parallel to the filter groove (2-1), the driven roller (2-2-2) and the adjusting roller (2-2-3) are arranged at two ends of the filter groove (2-1) respectively, and the scum ladles (2-2-5) in the scum collecting section move horizontally in the filter groove (2-1).

3. A blast furnace slag treatment apparatus according to claim 2, characterised in that: The water draining section is arranged obliquely, the driving roller (2-2-1) is located obliquely above the driven roller (2-2-2) and arranged outside the filter tank (2), and the scum water removal tank (2-3) is connected to the end of the driving roller (2-2-1).

4. A blast furnace slag treatment apparatus according to claim 3, characterised in that: The end of the scum water removal tank (2-3) connected to the driving roller (2-2-1) is open, the other end is provided with a hinged scum removing door (2-3-1), a filter plate and a drain pipe (2-3-2) are arranged at the bottom, and the drain pipe (2-3-2) is connected to the upper portion of the filter tank (2).

5. A blast furnace slag treatment apparatus according to claim 4, characterised in that: An arc-shaped baffle (2-4) is arranged at the end of the driven roller (2-2-2), the arc-shaped baffle (2-4) is fixed on the filter tank (2), and the upper portion thereof extends above the driven roller (2-2-2).

6. A blast furnace slag treatment apparatus according to claim 5, characterised in that: A filter plate (2-5) is further arranged below the filter groove (2-1), and the water outlet of the filter tank (2) is located below the filter plate (2-5).

7. A blast furnace slag processing plant according to claim 2, characterised in that: The circulating conveying belt (2-2-4) adopts a chain plate type conveying belt, and water filtering holes are uniformly distributed on the chain plates.

8. A blast furnace slag treatment apparatus according to claim 7, characterised in that: The scum ladles (2-2-5) are triangular bodies, and water filtering holes are arranged on each side plate of the bodies.

9. A blast furnace slag treatment apparatus according to claim 5 or 8, characterised in that: A scum blocking plate (1-1) is arranged at the water inlet in the sedimentation tank (1), the scum blocking plate (1-1) is hung at the water inlet through a support (1-2) fixed on the inner wall of the sedimentation tank (1) and is spaced apart from the water inlet.

10. A blast furnace slag treatment apparatus according to claim 9, characterised in that: The bottom of the sedimentation tank (1) is lower than the bottom of the filter tank (2), and the bottom of the sedimentation tank (1) is provided with slope angles inclined to the middle at both ends along the water flow direction, and the slope angle at the water inlet end is greater than that at the water outlet end.

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