Blank powder preparation system based on dry-wet method mixed powder preparation
By combining the dry vertical mill of the dry powder making system with the ball mill of the wet powder making system, the problems of high energy consumption of wet powder making and poor dry powder making and iron removal capabilities in the preparation of ceramic tiles are solved, and low energy consumption is achieved , high-efficiency ceramic powder preparation and ensure the quality of the ceramic body.
Patent Information
- Application Number
- CN202421023155.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-11
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-05-11
AI Technical Summary
In the existing ceramic tile preparation process, the wet powdering process has high energy consumption and low production efficiency, while the dry powdering process has poor iron removal ability and irregular powder particles, which affects the quality of the ceramic blank.
Organically combine the dry vertical mill in the dry powder making system with the ball mill in the wet powder making system, and use the dry vertical mill to perform rapid crushing to reduce the energy consumption of the wet ball mill, and use the wet powder making system The iron removal mechanism and spray tower ensure the finished quality of the ceramic body.
It effectively reduces the energy consumption of the blank powder preparation system, improves production efficiency, and ensures the finished product quality of the ceramic blank, and overcomes the shortcomings in the existing technology.
Smart Images
Figure CN222469235U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of building ceramic production equipment, in particular to a green body powder preparation system based on dry-wet mixed powder making. Background Art
[0002] The preparation of ceramic tiles generally involves first preparing the raw materials according to the formula ratio of the green body, then preparing the green body powder of the corresponding particle size through a powder making process, and finally obtaining the ceramic green body through a laying and pressing process, and finally firing in a kiln to obtain the ceramic green body.
[0003] At present, in the preparation process of ceramic green bodies, the powder making process of green body powder is generally a wet powder making process. Specifically, the process flow of wet powder making is mainly to first add water to the prepared green body raw materials for wet ball milling to form a slurry, and then spray granulate the slurry through a spray tower to form a powder. In the traditional wet powder making process, in order to ensure that the particle size of the slurry meets the spraying requirements, the ball milling step generally lasts for more than 15 hours, which results in high energy consumption of the wet powder making process and reduces production efficiency.
[0004] In order to effectively reduce the energy consumption in the powder making process, some manufacturers of building ceramics have begun to study the dry powder making process to replace the traditional wet powder making process with higher energy consumption. Specifically, the process flow of dry powder making is mainly to remove iron and crush the prepared green body raw materials, and then use a dry vertical mill to grind the powder to obtain fine powder with the required moisture content. After the fine powder is deironed and deslaged, it is wetted and granulated to obtain powder that meets the production particle size. Compared with the traditional wet powder making process, the comprehensive energy consumption of the dry powder making process can be effectively reduced, but its process pain points are also more obvious.
[0005] First, due to the limitations of the existing dry powder making process steps, its iron removal ability is worse than that of the traditional wet powder making process. At the same time, in order to ensure the production efficiency of the green body, the processing volume in one powder making process is generally large. Therefore, in order to ensure the iron removal effect of the green body raw materials, it is generally required that the iron oxide content of the green body raw materials should not be too high, otherwise it will lead to poor whiteness of the ceramic green body after firing, and defects such as prickly heat and pinholes are prone to occur on the surface of the product, reducing the product quality of the green body.
[0006] Second, from the photos magnified by microscope observation, the powder particles prepared by the dry pulverizing process are irregular in shape, with many edges and corners, rough particle surface, and solid particles. The density of the green body obtained by pressing the solid powder is generally larger. The green body with higher density will exhaust the organic matter in the green body raw materials during the firing process, making it easier to produce pinholes and black spots on the green body surface.
[0007] In addition, due to the limited equipment composition of the existing dry pulverizing system, its ability to remove organic matter is also worse than that of the traditional wet pulverizing system. When the organic matter content in the green body raw material is too high, the organic matter is very likely to not be completely oxidized into gas and discharged within a short firing cycle, resulting in the remaining organic matter remaining inside the green body to form a black core, which is not conducive to stabilizing the quality of the finished ceramic green body. Utility Model Content
[0008] The purpose of the utility model is to propose a green body powder preparation system based on dry-wet mixed powder making, which organically combines the dry vertical mill in the dry powder making system with the ball mill in the wet powder making system, which is beneficial to reducing the energy consumption of the green body powder preparation system while ensuring the finished product quality of the ceramic green body, so as to overcome the shortcomings of the prior art.
[0009] To achieve this purpose, the utility model adopts the following technical solutions:
[0010] A green body powder preparation system based on dry-wet mixed pulverizing comprises a dry vertical mill mechanism, a wet ball mill mechanism, an iron removal mechanism and a spray tower which are sequentially connected along the feeding direction of the green body powder; the dry vertical mill mechanism is used for dry grinding the green body raw material, the wet ball mill mechanism performs wet ball milling on the ground green body raw material to obtain slurry, the iron removal mechanism is used for iron removal from the slurry, and the spray tower is used for spray granulation of the iron removed slurry to obtain green body powder.
[0011] Preferably, a crusher is further included, the crusher is arranged close to the feeding end of the dry process vertical mill mechanism, and the feeding end of the crusher is connected to the feeding end of the dry process vertical mill mechanism, and the crusher is used to crush the green body raw material.
[0012] Preferably, the dry vertical mill mechanism comprises a first feeder, a first material conveyor belt, a dry vertical mill, a vibrating screen and a fine powder storage chamber which are sequentially connected along the feeding direction of the green body powder;
[0013] At least two first feeders are provided, and the unloading ends of the two first feeders are connected to the loading end of the first material conveyor belt.
[0014] Preferably, the mesh size of the vibration screen is 100 meshes.
[0015] Preferably, the wet ball milling mechanism comprises a second feeder, a second material conveyor belt and a ball mill which are sequentially connected along the feeding direction of the green body powder;
[0016] At least two second feeders are provided, and the unloading ends of the two second feeders are connected to the loading end of the second material conveyor belt.
[0017] Preferably, the iron removal mechanism comprises a pulp pool and a magnetic rod, and the adsorption end of the magnetic rod is movably installed inside the pulp pool.
[0018] Preferably, the crusher is a jaw crusher.
[0019] The technical solution provided by the embodiment of the utility model may have the following beneficial effects:
[0020] This solution organically combines the dry vertical mill in the dry pulverizing system with the ball mill in the wet pulverizing system. First, the dry vertical mill in the dry pulverizing system is used to quickly crush the raw materials, so as to greatly reduce the energy consumption of the wet ball mill mechanism and improve the efficiency of the wet ball mill mechanism during operation. Then, the iron removal mechanism with better iron removal ability and the spray tower with stronger organic matter removal ability in the wet pulverizing system are used to ensure the quality of the finished product after the green body is sintered. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 The utility model is a structural schematic diagram of a green body powder preparation system based on dry-wet mixed powder making.
[0022] Among them: dry vertical mill mechanism 1, first feeder 11, first material conveyor belt 12, dry vertical mill 13, vibrating screen 14, fine powder storage chamber 15, wet ball mill mechanism 2, second feeder 21, second material conveyor belt 22, ball mill 23, iron removal mechanism 3, slurry pool 31, magnetic suction rod 32, crusher 4. DETAILED DESCRIPTION
[0023] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0024] The present technical scheme provides a green body powder preparation system based on dry-wet mixed pulverizing, comprising a dry vertical mill mechanism 1, a wet ball mill mechanism 2, an iron removal mechanism 3 and a spray tower which are sequentially connected along the feeding direction of the green body powder; the dry vertical mill mechanism 1 is used for dry grinding the green body raw material, the wet ball mill mechanism 2 performs wet ball milling on the ground green body raw material to obtain slurry, the iron removal mechanism 3 is used for removing iron from the slurry, and the spray tower is used for spray granulation of the slurry after iron removal to obtain green body powder.
[0025] In order to reduce the energy consumption of the green body powder preparation system while ensuring the quality of the finished ceramic green body, the present technical solution proposes a green body powder preparation system based on dry-wet mixed powder making, including a dry vertical mill mechanism 1, a wet ball mill mechanism 2, an iron removal mechanism 3 and a spray tower (not shown in the figure) connected in sequence along the feeding direction of the green body powder.
[0026] Specifically, in the traditional wet pulverizing system, in order to ensure that the particle size of the slurry meets the spraying requirements, the ball mill generally has to work for more than 15 hours, which results in high energy consumption of the ball mill and reduces production efficiency. In addition, in the vertical milling process of the existing dry pulverizing system, since the impurity iron is mixed with various fine powders in various green body raw materials, it is difficult for the iron removal equipment to absorb the impurity iron in the fine powder, and its iron removal capacity is worse than that of the traditional wet pulverizing system; further, in the vertical milling process of the dry pulverizing system, the green body raw materials are simply crushed and mixed, and the organic matter in the raw materials still exists after being processed by all the equipment in the dry pulverizing system, so its ability to remove organic matter is also worse than that of the traditional wet pulverizing system.
[0027] In order to overcome the defects of the traditional wet pulverizing system and the existing dry pulverizing system at the same time, this scheme organically combines the dry vertical mill in the dry pulverizing system with the ball mill in the wet pulverizing system. First, the dry vertical mill in the dry pulverizing system is used to quickly crush the raw materials, so as to greatly reduce the energy consumption of the wet ball milling mechanism 2 and improve the efficiency of the wet ball milling mechanism 2 during the working process. Then, the iron removal mechanism 3 with better iron removal ability and the spray tower with strong organic matter removal ability in the wet pulverizing system are used to ensure the quality of the finished product after the green body is sintered.
[0028] Further explanation, it also includes a crusher 4, which is arranged close to the feeding end of the dry vertical mill mechanism 1, and the unloading end of the crusher 4 is connected to the feeding end of the dry vertical mill mechanism 1, and the crusher 4 is used to crush the green body raw material.
[0029] In a preferred embodiment of the present technical solution, the green body raw materials are first pre-processed by a crusher, which is more conducive to reducing the energy consumption in the green body powder preparation system.
[0030] Further, the dry vertical mill mechanism 1 comprises a first feeder 11, a first material conveyor belt 12, a dry vertical mill 13, a vibrating screen 14 and a fine powder storage chamber 15 which are sequentially connected along the feeding direction of the green body powder;
[0031] At least two first feeders 11 are provided, and the unloading ends of the two first feeders 11 are connected to the loading end of the first material conveyor belt 12 .
[0032] Among them, the first feeder 11 is used to feed different types of green body raw materials to multiple workstations, the first material conveyor belt 12 is used to transport the green body raw materials from the first feeder 11 to the dry vertical mill 13, the dry vertical mill 13 is used to screen the ground fine powder according to the required particle size, and the fine powder storage chamber 15 is used to store fine powder for subsequent processing.
[0033] To further illustrate, the mesh size of the vibration screen 14 is 100 meshes.
[0034] In the existing dry powder making system, the dry vertical mill 13 generally needs to grind the green body raw material into fine powder below 250 mesh (i.e., particle size ≤ 60 μm), while in this solution, it is only necessary to grind the green body raw material into fine powder below 100 mesh (i.e., particle size ≤ 150 μm), so as to reduce its production energy consumption under the premise of ensuring the grinding efficiency of the dry vertical mill 13. After the green body raw material is ground by the dry vertical mill 13, a shorter ball milling time is used in the wet ball milling mechanism 2 to make the slurry reach the fineness required by the spray tower spray granulation process, which greatly reduces the production energy consumption of the wet ball milling mechanism 2.
[0035] Further, the wet ball milling mechanism 2 includes a second feeder 21, a second material conveyor belt 22 and a ball mill 23 which are sequentially connected along the feeding direction of the green body powder;
[0036] At least two second feeders 21 are provided, and the unloading ends of the two second feeders 21 are connected to the loading end of the second material conveyor belt 22 .
[0037] The second feeder 21 is used to feed fine powder to multiple workstations, the second material conveyor belt 22 is used to convey the fine powder from the second feeder 21 to the ball mill 23, and the ball mill 23 is used to wet-mill the fine powder, that is, add water to the ball mill and mix with the fine powder before milling.
[0038] To further explain, the iron removal mechanism 3 includes a pulp pool 31 and a magnetic attraction rod 32 , and the adsorption end of the magnetic attraction rod 32 is movably installed inside the pulp pool 31 .
[0039] The preparation system of this scheme removes iron in the slurry. The magnetic rod 32 is used to stir the slurry in the slurry pool 31, so that the iron in the slurry can be effectively adsorbed on the magnetic rod 32, thereby ensuring the iron removal effect.
[0040] To further explain, the crusher 4 is a jaw crusher.
[0041] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.
[0042] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values of the parts and steps described in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in one drawing, it does not need to be further discussed in subsequent drawings.
[0043] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.
[0044] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.
[0045] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.
[0046] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.
[0047] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations here, technicians in this field can think of other specific implementation methods of the present invention without creative work, and these methods will fall within the protection scope of the present invention.
Claims
1. A green body powder preparation system based on dry-wet mixing powder making, characterized in that: It comprises a dry vertical mill mechanism, a wet ball mill mechanism, an iron removal mechanism and a spray tower which are sequentially connected along the feeding direction of the green body powder; the dry vertical mill mechanism is used for dry grinding the green body raw material, the wet ball mill mechanism performs wet ball milling on the ground green body raw material to obtain slurry, the iron removal mechanism is used for iron removal from the slurry, and the spray tower is used for spray granulation of the slurry after iron removal to obtain green body powder.
2. A green body powder preparation system based on dry-wet mixing powder making according to claim 1, characterized in that: It also includes a crusher, which is arranged close to the feeding end of the dry mill mechanism, and the feeding end of the crusher is connected to the feeding end of the dry mill mechanism, and the crusher is used to crush the green body raw material.
3. The green body powder preparation system based on dry-wet mixing powder making according to claim 1 is characterized in that: The dry vertical mill mechanism comprises a first feeder, a first material conveyor belt, a dry vertical mill, a vibrating screen and a fine powder storage chamber which are sequentially connected along the feeding direction of the green body powder; At least two first feeders are provided, and the unloading ends of the two first feeders are connected to the loading end of the first material conveyor belt.
4. A green body powder preparation system based on dry-wet mixing powder making according to claim 3, characterized in that: The mesh number of the vibration screen is 100 meshes.
5. The green body powder preparation system based on dry-wet mixing powder making according to claim 1 is characterized in that: The wet ball milling mechanism comprises a second feeder, a second material conveyor belt and a ball mill which are sequentially connected along the feeding direction of the green body powder; At least two second feeders are provided, and the unloading ends of the two second feeders are connected to the loading end of the second material conveyor belt.
6. The green body powder preparation system based on dry-wet mixing powder making according to claim 1 is characterized in that: The iron removal mechanism comprises a pulp pool and a magnetic attraction rod, and the adsorption end of the magnetic attraction rod is movably installed inside the pulp pool.
7. A green body powder preparation system based on dry-wet mixing powder making according to claim 2, characterized in that: The crusher is a jaw crusher.