High-pressure roller mill screening and ball milling closed-circuit system
By setting up a shared material pool for screening elements and ball mills in the same factory building and using cyclones for graded separation, the problems of large footprint and inconvenient maintenance of high-pressure roller mill screening and ball mill systems were solved, and the structure was simplified and production efficiency improved.
Patent Information
- Application Number
- CN202422114957.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-29
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2034-08-29
AI Technical Summary
In the prior art, the high-pressure roller mill screening and ball mill systems are arranged in separate workshops, which take up a large space, require many devices, and are inconvenient to maintain.
The screening element and the ball mill share the same material pool and are set up in the same factory building. The cyclone is used for graded separation, which simplifies the structure, saves floor space and is easy to maintain.
The overall structure is simplified, floor space is saved, equipment maintenance is facilitated, and production efficiency and system stability are improved.
Smart Images
Figure CN223367138U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of mineral processing, and in particular relates to a high-pressure roller mill screening and ball mill closed-circuit system. Background Art
[0002] In the prior art, the high-pressure roller mill screening closed-circuit system and the ball mill system are located in separate, independent buildings. The product screened by the closed-circuit screening system enters the pump sump within the screening building and then needs to be transported by a conveying device (pump, chute, or conveyor) to the cyclone feed pump sump in the grinding building. This occupies a large space, requires a large number of devices, and is difficult to maintain. Summary of the Invention
[0003] The present invention aims to solve at least one of the technical problems in the related art to a certain extent. To this end, the embodiment of the present invention provides a high-pressure roller mill screening and ball mill closed-circuit system that can simplify the overall structure, save floor space, and facilitate maintenance.
[0004] The high-pressure roller mill screening and ball mill closed-circuit system of the embodiment of the present utility model includes: a feeding assembly; a screening element, the feed port of the screening element is connected to the discharge port of the feeding assembly; a material pool, the material pool is connected to the discharge port of the screening element; a cyclone, the feed port of the cyclone is connected to the material pool, and the overflow port of the cyclone is connected to the screening device; a ball mill, the feed port of the ball mill is connected to the underflow port of the cyclone, and the discharge port of the ball mill is connected to the material pool.
[0005] It can be understood that the material can be transported to the screening element through the feeding component, and the material is screened by the screening element. The part of the material with smaller particles screened by the screening element, that is, the underscreen product, can be transported to the material pool, and the part with larger particles, that is, the overscreen product, can be returned to the roller mill for ultra-fine crushing. After the material in the material pool is transported to the cyclone, it is graded and separated by the cyclone. The material with smaller particles flows out through the overflow port and is then sorted. The material with larger particles flows out from the bottom flow port after sedimentation and is transported to the ball mill, is finely ground by the ball mill, and then transported to the material pool after fine grinding. In this embodiment, the screening element and the ball mill share the material pool, and the screening element and the ball mill can be set in the same factory building, which simplifies the overall structure, saves floor space, and is easy to maintain.
[0006] In this embodiment, the discharge port of the screening element is located above the feed port of the material pool.
[0007] In this embodiment, the discharge port of the ball mill is connected to the feed port of the material pool through a chute.
[0008] In this embodiment, the high pressure roller mill screening and ball mill closed-circuit system further includes a delivery pump, the feed port of the delivery pump is connected to the material pool, and the discharge port of the delivery pump is connected to the feed port of the cyclone.
[0009] In this embodiment, the mesh size of the screening element is 3 mm to 6 mm.
[0010] In this embodiment, the discharge port of the cyclone is located above the feed port of the ball mill.
[0011] In this embodiment, the feeding assembly includes a buffer silo, and the discharge port of the buffer silo is arranged above the feed port of the screening element.
[0012] In this embodiment, the feeding assembly further includes a feeder, which is disposed below the discharge port of the buffer silo, and a discharge end of the feeder is located above the feed port of the screening element.
[0013] In this embodiment, a feeding funnel is further included. The feeder has a discharge funnel. The feed port of the feeding funnel is connected to the discharge funnel, and the discharge port of the feeding funnel is connected to the feed port of the screening element.
[0014] In this embodiment, the high pressure roller mill screening and ball mill closed-circuit system further includes a conveyor, and the discharge port of the conveyor is located above the feed port of the buffer silo. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a flow chart of a high-pressure roller mill screening and ball mill closed-circuit system according to an embodiment of the present invention.
[0016] Figure 2 It is a structural schematic diagram of a high-pressure roller mill screening and ball mill closed-circuit system according to an embodiment of the present invention.
[0017] Reference numerals:
[0018] 1. Conveyor; 2. Buffer silo; 3. Feeder; 4. Screening element; 5. Material tank; 6. Conveying pump; 7. Ball mill; 8. Cyclone. DETAILED DESCRIPTION
[0019] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.
[0020] In this embodiment, if Figure 1 and Figure 2As shown, the high-pressure roller mill screening and ball mill closed-circuit system includes a feeding assembly, a screening element 4, a material pool 5, a cyclone 8 and a ball mill 7. The feeding port of the screening element 4 is connected to the discharging port of the feeding assembly; the material pool 5 is connected to the discharging port of the screening element 4; the feeding port of the cyclone 8 is connected to the material pool 5, and the overflow port of the cyclone 8 is connected to the screening device; the feeding port of the ball mill 7 is connected to the underflow port of the cyclone 8, and the discharge port of the ball mill 7 is connected to the material pool 5.
[0021] For example, the screening element 4 can be a linear vibrating screen or a banana-shaped vibrating screen. The linear vibrating screen and the banana-shaped vibrating screen can loosen and screen the material, reduce clogging, and help improve screening efficiency. The screening element 4 can be provided in multiple numbers. For example, the screening element 4 can be provided in two, three, or four numbers. The multiple screening elements 4 can be sequentially arranged below the feeding assembly. The feeding assembly has multiple discharge ports, and each discharge port of the feeding assembly corresponds to a screening element 4. The provision of multiple screening elements 4 can improve screening efficiency.
[0022] Tank 5 can be made of concrete or steel. Concrete tanks are relatively inexpensive, easy to maintain, and structurally stable. Steel tanks are strong enough to withstand significant internal pressure and external impact, making them easy to install and remove. The specific material of tank 5 can be customized as needed and is not a limitation here.
[0023] It can be understood that the material can be transported to the screening element 4 through the feeding assembly, and the material is screened by the screening element 4. The part of the material with smaller particles screened by the screening element 4, that is, the underscreen product, can be transported to the material pool 5, and the part with larger particles, that is, the overscreen product, can be returned to the roller mill for ultra-fine crushing. After the material in the material pool 5 is transported to the cyclone 8, it is graded and separated by the cyclone 8. The material with smaller particles flows out through the overflow port and is then sorted. The material with larger particles flows out from the bottom flow port after settling and is transported to the ball mill 7, is finely ground by the ball mill 7, and is transported to the material pool 5 after fine grinding. In this embodiment, the screening element 4 and the ball mill 7 share the material pool 5, and the screening element 4 and the ball mill 7 can be set in the same factory building, which simplifies the overall structure, saves floor space, and is easy to maintain.
[0024] In this embodiment, if Figure 1 and Figure 2 As shown, the discharge port of the screening element 4 is located above the feed port of the material tank 5 .
[0025] It can be understood that by setting the discharge port of the screening element 4 above the feed port of the material pool 5, the material screened by the screening element 4 can fall directly into the material pool 5 under the action of gravity, without the need to set up a power transmission device, which is conducive to cost saving.
[0026] In this embodiment, if Figure 1 and Figure 2As shown, the discharge port of the ball mill 7 is connected to the feed port of the material pool 5 through a chute.
[0027] Specifically, the discharge port of the ball mill 7 and the feed port of the material pool 5 are located at different heights, and the discharge port of the ball mill 7 is located above the feed port of the material pool 5 .
[0028] It is understandable that the material discharged from the discharge port of the ball mill 7 automatically falls into the material pool 5 through the feed port of the material pool 5 through the chute, without the need for driving by a power drive device, which is conducive to cost saving.
[0029] In this embodiment, if Figure 1 and Figure 2 As shown, the high pressure roller mill screening and ball mill closed-circuit system further includes a delivery pump 6 , the feed port of the delivery pump 6 is connected to the material pool 5 , and the discharge port of the delivery pump 6 is connected to the feed port of the cyclone 8 .
[0030] Specifically, the delivery pump 6 is connected to the material pool 5 by a pipeline, and the delivery pump 6 is connected to the cyclone 8 by a pipeline. The delivery pump 6 can be provided with multiple, for example, the delivery pump 6 can be provided with two, three or four, etc., and the multiple delivery pumps 6 can work simultaneously or alternately. When multiple delivery pumps 6 work simultaneously, the material delivery capacity can be improved, and the system can also be operated continuously to avoid the system from being unable to work when the delivery pump 6 is damaged. The number of delivery pumps 6 can be set as needed and is not used to limit the present invention.
[0031] It is understood that the material can be delivered to the cyclone 8 quickly and continuously by the delivery pump 6, and the delivery volume can be easily controlled. When the material is delivered in conjunction with the pipeline, a closed space can be formed, which reduces material leakage and improves the working environment. Of course, other methods can also be used to deliver materials, which are not limited here.
[0032] In this embodiment, the mesh size of the screening element 4 is 3 mm to 6 mm.
[0033] For example, the mesh size of the screening element 4 can be 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm or 6 mm, etc. If the mesh size is too small, it is not conducive to improving work efficiency. If the mesh size is too large, it is not conducive to subsequent mineral processing.
[0034] In this embodiment, by setting the mesh size of the screening element 4 to 3 mm to 6 mm, it is convenient for subsequent mineral separation and helps to improve the working efficiency.
[0035] In this embodiment, if Figure 1 and Figure 2 As shown, the discharge port of the cyclone 8 is located above the feed port of the ball mill 7 .
[0036] Specifically, the discharge port of the cyclone 8 and the feed port of the ball mill 7 can be connected through a pipeline, and the material can be transported in the pipeline, which can reduce the leakage of the material and is conducive to improving the working environment.
[0037] It is understandable that the discharge port of the cyclone 8 is located above the feed port of the ball mill 7, so that the material flowing out of the bottom flow port of the cyclone 8 can automatically flow into the feed port of the ball mill 7 under the action of its own gravity, which is conducive to simplifying the structure and reducing costs.
[0038] In this embodiment, if Figure 1 and Figure 2 As shown, the feeding assembly includes a buffer silo 2 , and the discharge port of the buffer silo 2 is arranged above the feed port of the screening element 4 .
[0039] It can be understood that by providing the buffer silo 2, a certain amount of material can be stored, which facilitates the timely and continuous supply of material to the screening element 4, and is beneficial to the overall stable operation of the system.
[0040] In this embodiment, if Figure 1 and Figure 2 As shown, the feeding assembly further includes a feeder 3 , which is arranged below the discharge port of the buffer silo 2 , and the discharge end of the feeder 3 is located above the feed port of the screening element 4 .
[0041] There can be multiple feeders 3 arranged in sequence, with the feed port of each feeder 3 corresponding to the discharge port of the buffer bin 2. The number of feeders 3 can be consistent with the number of screening elements 4, with each feeder 3 corresponding to one screening element 4, which helps to match the feeding amount of the feeder 3 with the screening amount of the screening element 4, thereby improving production efficiency.
[0042] By providing the feeder 3 to convey the material in the buffer silo 2 to the screening element 4, the material can be conveyed to the screening element 4 stably and evenly, which is beneficial to reducing the blockage of the screening element 4, and is beneficial to the stable operation of the system and improving production efficiency.
[0043] In this embodiment, the high-pressure roller mill screening and ball mill closed-circuit system further includes a feeding funnel, the feeder 3 has a discharge funnel, the feed port of the feeding funnel is connected to the discharge funnel, and the discharge port of the feeding funnel is connected to the feed port of the screening element 4.
[0044] Specifically, the flow cross-section of the discharge funnel gradually decreases from its feed port to its discharge port, which guides and transports the material, thereby ensuring directional transmission of the material.
[0045] The flow cross-section of the middle portion of the feeding funnel is larger than that of the feeding port and the discharge port of the feeding funnel, so as to break up the material, facilitate the screening operation of the screening element 4, and cushion the falling material. The flow cross-section of the discharge port of the feeding funnel can be set to a long strip shape to facilitate the cooperation with the feeding blind plate of the vibrating element 4 for uniform material distribution.
[0046] In this embodiment, if Figure 1 and Figure 2 As shown, the high pressure roller mill screening and ball mill closed-circuit system further includes a conveyor 1 , the discharge port of the conveyor 1 is located above the feed port of the buffer silo 2 .
[0047] Specifically, the conveyor 1 may be a belt conveyor 1. Of course, the conveyor 1 may also be a conveyor 1 in other forms, which is not limited here.
[0048] It can be understood that providing the conveyor 1 to convey materials to the buffer silo 2 is beneficial to improving the conveying efficiency and reducing the labor intensity.
[0049] In this embodiment, if Figure 2 As shown, the high-pressure roller mill screening and ball mill closed-circuit system also includes a frame, and the buffer silo 2, feeder 3, screening element 4 and material pool 5 are arranged on the frame in sequence from top to bottom, which can save floor space, and when the material passes through the buffer silo 2, feeder 3, screening element 4 and material pool 5 in sequence, it can be transported by its own gravity, which can save resources and reduce energy consumption.
[0050] When the high-pressure roller mill screening and ball mill closed-circuit system in this embodiment is used, the material after roller milling in the roller mill is transported to the buffer silo 2 through a conveyor, and the material in the buffer silo 2 is fed to the screening element 4 through the feeder 3. The material is screened by the screening element 4, and the part of the material with smaller particles under the screen screened by the screening element 4 can be transported to the material pool 5, and the part with larger particles on the screen can be returned to the roller mill for roller milling again. After the material in the material pool 5 is transported to the cyclone 8, it is graded and separated by the cyclone 8. The material with smaller particles flows out through the overflow port and is sorted. The material with larger particles settles and flows out from the bottom flow port and is transported to the ball mill 7, and is finely ground by the ball mill 7. After fine grinding, it is transported to the material pool 5 and then transported to the cyclone 8 through the delivery pump 6 for graded and separated again.
[0051] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.
[0052] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.
[0053] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.
[0054] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.
[0055] In the present invention, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.
[0056] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.
Claims
1. A high pressure roller mill screening and ball mill closed circuit system, characterized in that: include: Loading components; A screening element, wherein the feed port of the screening element is connected to the discharge port of the feeding assembly; A material pool, the material pool being connected to the discharge port of the screening element; A cyclone, wherein the feed port of the cyclone is connected to the material pool, and the overflow port of the cyclone is connected to the screening device; A ball mill, wherein the feed port of the ball mill is connected to the underflow port of the cyclone, and the discharge port of the ball mill is connected to the material pool.
2. The high pressure roller mill screening and ball mill closed circuit system according to claim 1 is characterized in that: The discharge port of the screening element is located above the feed port of the material pool.
3. The high pressure roller mill screening and ball mill closed circuit system according to claim 1, characterized in that: The discharge port of the ball mill is connected to the feed port of the material pool through a chute.
4. The high pressure roller mill screening and ball mill closed circuit system according to claim 1, characterized in that: It also includes a delivery pump, wherein the feed port of the delivery pump is connected to the material pool, and the discharge port of the delivery pump is connected to the feed port of the cyclone.
5. The high pressure roller mill screening and ball mill closed circuit system according to claim 1, characterized in that: The mesh size of the screening element is 3 mm to 6 mm.
6. The high pressure roller mill screening and ball mill closed circuit system according to claim 1, characterized in that: The discharge port of the cyclone is located above the feed port of the ball mill.
7. The high pressure roller mill screening and ball mill closed circuit system according to any one of claims 1 to 6, characterized in that: The feeding assembly includes a buffer silo, and the discharge port of the buffer silo is arranged above the feed port of the screening element.
8. The high pressure roller mill screening and ball mill closed circuit system according to claim 7, characterized in that: The feeding assembly further includes a feeder, which is arranged below the discharge port of the buffer silo, and the discharge end of the feeder is located above the feed port of the screening element.
9. The high pressure roller mill screening and ball mill closed circuit system according to claim 8, characterized in that: It also includes a feeding funnel, the feeder has a discharge funnel, the feed port of the feeding funnel is connected to the discharge funnel, and the discharge port of the feeding funnel is connected to the feed port of the screening element.
10. The high pressure roller mill screening and ball mill closed circuit system according to claim 9, characterized in that: It also includes a conveyor, wherein the discharge port of the conveyor is located above the feed port of the buffer silo.