Raw material pulverizer for bauxite processing
By arranging alumina ceramic sheets on the inner wall of the vertical mill grinding chamber and setting iron removal plates and permanent magnets above, the iron component pollution problem during the vertical mill grinding is solved, and efficient iron removal is achieved and the high quality of bauxite powder is ensured.
Patent Information
- Application Number
- CN202422278568.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-18
- Publication Date
- 2025-08-29
- Estimated Expiration
- 2034-09-18
AI Technical Summary
During the bauxite milling process in the existing vertical mill, the iron component of the grinding chamber enters the bauxite powder, affecting the product quality.
Alumina ceramic sheets are arranged on the inner wall of the grinding chamber of the vertical mill, and iron plates and permanent magnets are arranged above the grinding chamber. The permanent magnets are used to absorb iron impurities and remove iron in advance to improve product quality.
It effectively avoids the iron components of the grinding chamber entering the bauxite powder, ensures the high quality of the product, and improves the efficiency of the iron removal process.
Smart Images
Figure CN223276340U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bauxite processing, in particular to a raw material grinding machine for bauxite processing. Background Art
[0002] Grinding is a crucial step in bauxite processing. Bauxite powder is a fine powder produced by grinding calcined bauxite ore using a grinding mill. Its particle size typically ranges from 100 to 325 mesh, making it a new type of advanced silicon-aluminum refractory material. The iron content in bauxite powder significantly impacts the refractoriness of the refractory. Therefore, to ensure widespread application of high-alumina bauxite in the refractory and ceramic industries, its iron content must be kept to a low level to meet operational requirements. However, when grinding bauxite in existing vertical mills, some of the iron in the grinding chamber itself enters the bauxite powder, affecting product quality. Utility Model Content
[0003] The main purpose of the utility model is to provide a raw material grinding machine for bauxite processing, which is used to solve the problems mentioned in the background technology.
[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:
[0005] A raw material grinding mill for bauxite processing comprises a vertical mill body and a transmission device. The vertical mill body is fixed to a base via a frame. A grinding chamber is located at the bottom of the vertical mill body, housing a grinding disc and grinding rollers. The bottom of the grinding disc is connected to the transmission device, and the grinding rollers are positioned on either side of the grinding disc. A layer of highly wear-resistant alumina ceramic tiles is arranged on the inner wall of the grinding chamber. A funnel-shaped filter is located above the grinding chamber, with an iron removal plate located above the filter and a filter screen located below the iron removal plate. The iron removal plate has several tapered holes, surrounded by permanent magnets.
[0006] Furthermore, the iron removal plate is provided with two layers, an upper layer and an lower layer, and a gap is provided between the upper and lower iron removal plates.
[0007] Furthermore, an air inlet is provided at the bottom of the grinding chamber, and the air inlet is connected to a blower.
[0008] Furthermore, a discharge port is provided on one side of the top of the vertical mill body, and a feed port is provided obliquely above the grinding chamber.
[0009] Furthermore, the transmission device includes a motor and a reducer, the motor is connected to the reducer, and the reducer is connected to the grinding disc.
[0010] The present invention also includes other components that enable the normal operation of the bauxite processing raw material grinding mill. These devices or components all utilize conventional techniques in the art. Furthermore, devices and components not otherwise specified in the present invention, such as the vertical mill body described herein, all utilize conventional techniques in the art. During implementation, appropriate device or component models may be selected based on the specific work scenario.
[0011] The working principle of this utility model is to cover the grinding chamber of the vertical mill with a layer of alumina ceramic sheets to prevent the iron content of the grinding chamber from entering the bauxite powder. Alumina is the most important component of bauxite powder. Even if some powder from the alumina ceramic sheets enters the bauxite powder during grinding, it will not affect its quality. In addition, the addition of an iron removal plate above the grinding chamber can pre-deironing the bauxite powder, paving the way for subsequent iron removal processes and improving work efficiency.
[0012] Compared with the prior art, the present invention has the following beneficial effects: an alumina ceramic sheet is provided to prevent the iron component in the grinding chamber of the vertical mill body from entering the bauxite powder, thereby ensuring product quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 The utility model is a schematic diagram of the overall structure of a raw material grinding machine for bauxite processing.
[0014] Figure 2 for Figure 1 A partial enlarged view of area A in the middle.
[0015] In the figure: 1. Base; 2. Frame; 3. Vertical mill body; 4. Filter; 5. Iron removal plate; 51. Conical hole; 52. Permanent magnet; 6. Filter; 7. High wear-resistant ceramic tile; 8. Air inlet; 9. Feed inlet; 10. Discharge outlet; 11. Motor; 12. Reducer; 13. Grinding disc; 14. Grinding roller. DETAILED DESCRIPTION
[0016] The present invention will be described in further detail below with reference to the accompanying drawings and specific implementation methods.
[0017] Example:
[0018] like Figures 1-2As shown, a raw material grinding mill for bauxite processing includes a vertical mill body 3 and a transmission device. The vertical mill body 3 is fixed to the base 1 through a frame 2. A grinding chamber is provided at the bottom of the vertical mill body 3. A grinding disc 13 and a grinding roller 14 are provided in the grinding chamber. The bottom of the grinding disc 13 is connected to the transmission device, and the grinding roller 14 is provided on both sides of the grinding disc 13. A layer of high-wear-resistant ceramic sheets 7 is arranged on the inner wall of the grinding chamber. The high-wear-resistant ceramic sheets 7 are alumina ceramic sheets. A funnel-shaped filter 4 is provided above the grinding chamber. An iron removal plate 5 is provided on the upper part of the filter 4, and a filter screen 6 is provided below the iron removal plate 5. A plurality of conical holes 51 are provided on the iron removal plate 5, and permanent magnets 52 are embedded around the conical holes 51.
[0019] Specifically, the transmission device includes a motor 11 and a reducer 12, the motor 11 is connected to the reducer 12, and the reducer 12 is connected to the grinding disc 13. The iron removal plate 5 is provided with two layers, upper and lower, and a gap is provided between the upper and lower iron removal plates 5.
[0020] In addition, a discharge port 10 is provided on one side of the top of the vertical mill body 3, and a feed port 9 is provided obliquely above the grinding chamber. An air inlet 8 is provided at the bottom of the grinding chamber, and the air inlet 8 is connected to a blower.
[0021] The working principle of this bauxite processing raw material grinding mill is as follows: a layer of alumina ceramic sheets is placed inside the grinding chamber of the vertical mill body 3 to prevent the iron in the grinding chamber from entering the bauxite powder. Alumina is the most important component in bauxite powder. Even if some powder from the alumina ceramic sheets enters the bauxite powder during grinding, it will not affect its quality. In addition, a deironing plate 5 is added above the grinding chamber to pre-deiron the bauxite powder, preparing for the subsequent deironing process and improving work efficiency.
[0022] The above embodiments are only descriptions of the preferred implementation methods of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the scope of protection of the present invention.
Claims
1. A raw material grinding mill for bauxite processing, comprising a vertical mill body (3) and a transmission device, wherein the vertical mill body (3) is fixed to a base (1) through a frame (2), a grinding chamber is provided at the bottom of the vertical mill body (3), a grinding disc (13) and a grinding roller (14) are provided in the grinding chamber, the bottom of the grinding disc (13) is connected to the transmission device, and the grinding rollers (14) are provided on both sides of the grinding disc (13), characterized in that: The inner wall of the grinding chamber is provided with a layer of high-wear-resistant ceramic sheets (7), which are alumina ceramic sheets; a funnel-shaped filter (4) is provided above the grinding chamber, an iron removal plate (5) is provided on the upper part of the filter (4), and a filter screen (6) is provided below the iron removal plate (5); a plurality of conical holes (51) are provided on the iron removal plate (5), and permanent magnets (52) are embedded around the conical holes (51).
2. The raw material grinding machine for bauxite processing according to claim 1, characterized in that: The iron removal plate (5) is provided with an upper and lower layer, and a gap is provided between the upper and lower iron removal plates (5).
3. The raw material grinding machine for bauxite processing according to claim 1, characterized in that: An air inlet (8) is provided at the bottom of the grinding chamber, and the air inlet (8) is connected to a blower.
4. The raw material grinding machine for bauxite processing according to claim 1, characterized in that: A discharge port (10) is provided on one side of the top of the vertical mill body (3), and a feed port (9) is provided obliquely above the grinding chamber.
5. The raw material grinding machine for bauxite processing according to claim 1, characterized in that: The transmission device comprises a motor (11) and a reducer (12), wherein the motor (11) is connected to the reducer (12), and the reducer (12) is connected to the grinding disc (13).