Final grinding structure of steel slag RO phase separation external circulation vertical mill

Abstract

The utility model discloses a steel slag RO phase separation external circulation vertical mill final grinding structure which comprises a vertical mill, an elevator, a steady flow bin, a belt weigher, an RO phase separator, a cyclone cylinder, a feeding conveyor belt, a dust collector and a fan, a feeding port of the elevator is connected with a slag discharging port of the vertical mill, a discharging port of the elevator is connected with a feeding port of the steady flow bin, and the RO phase separator is connected with the RO phase separator. A discharge port of the steady flow bin is provided with a discharger, a belt weigher is arranged below the discharger, a discharge end of the belt weigher is connected with a feed port of an RO phase separator, the RO phase separator is communicated with a cyclone cylinder through a sealing pipeline, a discharge port of the RO phase separator is connected with an inclined material pipeline, and a discharge port of the inclined material pipeline is provided with a feeding conveyor belt. According to the external circulation system, the deposited RO phase material and the steel particle material are jointly lifted by the lifting machine and then are fed into the steady flow bin, and then are effectively separated by the unloader, the belt weigher and the RO phase separator, so that the problem that the content of the RO phase material in the existing external circulation system is too high is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of vertical mill equipment, in particular to a steel slag RO phase separation external circulation vertical mill final grinding structure. Background Art

[0002] RO phase material is the mineral with the highest density and hardness in steel slag, and is enriched in the coarse-grained and heavy components. RO phase particle minerals seriously affect the hydration gel strength and grinding conditions of steel slag, but it is currently very difficult to separate and purify the RO phase.

[0003] The existing various slag powder separation process methods or RO phase extraction devices for separating, enriching and purifying the RO phase, a medium magnetic permeability and high hardness mineral enclosed and coexisting in the steel slag, have very low efficiency and high cost.

[0004] Therefore, we propose a steel slag RO phase separation external circulation vertical mill final grinding structure to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a steel slag RO phase separation external circulation vertical mill final grinding structure to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A steel slag RO phase separation external circulation vertical mill final grinding structure comprises a vertical mill, an elevator, a steady flow bin, a belt scale, an RO phase separator, a cyclone, a feeding conveyor, a dust collector and a fan, wherein the feeding port of the elevator is connected to the slag discharge port of the vertical mill, and the discharging port of the elevator is connected to the feeding port of the steady flow bin, a discharger is installed at the discharging port of the steady flow bin, and a belt scale is arranged below the discharger, the discharging end of the belt scale is connected to the feeding port of the RO phase separator, and the RO phase separator is connected to the cyclone through a sealed pipe, and an inclined material pipe is connected to the discharging port of the inclined material pipe, and a feeding conveyor is arranged at the discharging port of the inclined material pipe for feeding into the vertical mill.

[0008] In a further embodiment, the dust collector is connected to the vertical mill, the elevator and the RO phase separator through closed pipes, respectively, and the dust collector is also connected to the fan to form a negative pressure in the inner cavity of each pipe.

[0009] In a further embodiment, two groups of feeding conveyors are provided on both sides of the vertical mill, so that the process of adding raw materials and recycled materials into the vertical mill is relatively independent.

[0010] In a further embodiment, the discharger adopts a rotary unloading and arch breaking shaft.

[0011] In a further embodiment, the height of the feed port of the inclined material pipeline is higher than the height of the discharge port, and an iron remover is installed on the inclined material pipeline.

[0012] In a further embodiment, there are multiple iron removers, and the multiple iron removers are connected in series in sequence.

[0013] In a further embodiment, an iron powder collector box is provided under the iron remover for collecting the iron powder separated by the iron remover.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model uses a vertical mill to remove the deposited and enriched RO phase material and steel pellet mixture for centralized treatment, so that the mixture is lifted by an elevator and fed into a steady flow bin, and then enters the RO phase separator through a discharger and a belt scale for effective separation, which greatly improves the separation rate of the RO phase material in the steel pellet material, solves the problem of excessively high RO phase material content in the current external circulation system, and is beneficial to improving production efficiency and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the process flow chart of the utility model.

[0017] In the figure: 1. Vertical grinding mill; 2. Elevator; 3. Flow stabilization bin; 4. Discharger; 5. Belt scale; 6. RO phase separator; 7. Cyclone; 8. Inclined material pipeline; 9. Feeding conveyor belt; 10. Dust collector; 11. Fan; 12. Iron remover; 13. Iron powder collector box. DETAILED DESCRIPTION

[0018] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0019] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood by specific circumstances.

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1 A steel slag RO phase separation external circulation vertical mill final grinding structure comprises a vertical mill 1, an elevator 2, a flow stabilizing bin 3, a belt scale 5, an RO phase separator 6, a cyclone 7, a feeding conveyor 9, a dust collector 10 and a fan 11. The feed port of the elevator 2 is connected to the slag discharge port of the vertical mill 1, and the discharge port of the elevator 2 is connected to the feed port of the flow stabilizing bin 3. The discharge port of the flow stabilizing bin 3 is equipped with a discharger 4. The discharger 4 adopts a rotary discharge arch breaking shaft, which can not only reduce the arching of the discharge port of the flow stabilizing bin 3 and cause the discharge to be unstable. In the case of uniformity, the RO phase material can also be broken up during the rotation process to reduce the agglomeration. A belt scale 5 is provided below the discharger 4. The discharge end of the belt scale 5 is connected to the feed port of the RO phase separator 6, and the RO phase separator 6 is connected to the cyclone 7 through a sealed pipe. The dust collector 10 is connected to the vertical mill 1, the elevator 2 and the RO phase separator 6 through a closed pipe, and the dust collector 10 is also connected to the fan 11, so that the inner cavity of each pipeline forms a negative pressure to reduce the overflow of fine powder materials;

[0022] An inclined material pipe 8 is connected to the discharge port of the RO phase separator 6. The feed port height of the inclined material pipe 8 is higher than the discharge port height, which is convenient for automatically guiding the material by gravity. An iron remover 12 is installed on the inclined material pipe 8. There are multiple iron removers 12, and the multiple iron removers 12 are connected in series in sequence to enhance the removal efficiency of iron powder in the powder during material guiding. An iron powder collector box 13 is provided under the iron remover 12, which is used to collect the iron powder separated by the iron remover 12. A feeding conveyor belt 9 is provided at the discharge port of the inclined material pipe 8. The feeding port of the feeding conveyor belt 9 is opposite to the feeding port of the vertical mill 1, which is used to feed the vertical mill 1. In order to ensure that the raw material and the circulating material do not interfere with each other, two groups of feeding conveyor belts 9 are provided on both sides of the vertical mill 1, so that the addition process of raw material and circulating material into the vertical mill 1 is relatively independent.

[0023] Working principle: After the steel slag is ground by the vertical mill 1, fine powder material and coarse powder material are formed. The fine powder material enters the dust collector 10 through the vertical mill 1 for finished product collection, and the coarse powder material is discharged from the slag discharge port of the vertical mill 1 and enters the elevator 2. The material is lifted by the elevator 2 and fed into the steady flow bin 3. The material in the steady flow bin 3 is continuously fed to the belt scale 5 under the action of the discharger 4, and the RO phase material in the coarse powder material is broken up to reduce agglomeration, and then transported to the RO phase separator 6 for sorting through the belt scale 5. The fine powder material passes through the cyclone 7 and enters the dust collector 10 for finished product collection, and the separated coarse powder material and RO phase material are transported into the inclined material pipeline 8, and the iron powder in the powder material is separated by the iron remover 12, and finally transported to the vertical mill 1 for grinding by the feeding conveyor 9.

[0024] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0025] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A steel slag RO phase separation external circulation vertical mill final grinding structure, comprising a vertical mill (1), an elevator (2), a flow stabilization bin (3), a belt scale (5), an RO phase separator (6), a cyclone (7), a feeding conveyor belt (9), a dust collector (10) and a fan (11), characterized in that: The feed port of the elevator (2) is connected to the slag discharge port of the vertical mill (1), and the discharge port of the elevator (2) is connected to the feed port of the steady flow bin (3). The discharge port of the steady flow bin (3) is equipped with a discharger (4), and a belt scale (5) is provided below the discharger (4). The discharge end of the belt scale (5) is connected to the feed port of the RO phase separator (6), and the RO phase separator (6) is connected to the cyclone (7) through a sealed pipe. The discharge port of the RO phase separator (6) is connected to an inclined material pipe (8), and the discharge port of the inclined material pipe (8) is provided with a feeding conveyor belt (9) for feeding into the vertical mill (1).

2. The steel slag RO phase separation external circulation vertical mill final grinding structure according to claim 1 is characterized by: The dust collector (10) is connected to the vertical grinding mill (1), the elevator (2) and the RO phase separator (6) respectively through closed pipes, and the dust collector (10) is also connected to the fan (11), so that negative pressure is formed in the inner cavity of each pipe.

3. The steel slag RO phase separation external circulation vertical mill final grinding structure according to claim 1 is characterized by: The feeding conveyor belt (9) is provided with two groups on both sides of the vertical grinding mill (1), so that the process of adding raw materials and circulating materials into the vertical grinding mill (1) is relatively independent.

4. The steel slag RO phase separation external circulation vertical mill final grinding structure according to claim 1 is characterized by: The discharger (4) adopts a rotary material unloading and arch breaking shaft.

5. The steel slag RO phase separation external circulation vertical mill final grinding structure according to claim 1 is characterized by: The height of the feed port of the inclined material pipeline (8) is higher than the height of the discharge port, and an iron remover (12) is installed on the inclined material pipeline (8).

6. The steel slag RO phase separation external circulation vertical mill final grinding structure according to claim 5 is characterized by: A plurality of the iron removers (12) are provided, and the plurality of iron removers (12) are sequentially connected in series.

7. The steel slag RO phase separation external circulation vertical mill final grinding structure according to claim 5 is characterized by: An iron powder collector box (13) is provided below the iron remover (12) for collecting iron powder separated by the iron remover (12).

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