A vertical ball mill and method for grinding iron ore into iron concentrate powder

Abstract

The present invention relates to the technical field of vertical ball mills, and proposes a vertical ball mill and method for grinding iron ore into iron concentrate powder, including a frame, a crushing cylinder is arranged on the frame, the crushing cylinder has a crushing cavity, a lining plate, the lining plate is arranged on the inner wall of the crushing cavity, and there are several guiding grooves on the lining plate. A rotating member is rotatably arranged on the frame and is located in the crushing cavity. A pushing plate is arranged on the rotating member and is located in the crushing cavity, abuts against the lining plate. The pushing plate has a high-pressure gas path, the high-pressure gas path has air holes, and the air holes are inclined towards the lining plate. Grinding balls are located in the crushing cavity, the pushing plate pushes the grinding balls to move disorderly, and the grinding balls slide along the guiding grooves under the action of the pushing plate and then break away. Through the above technical solution, the problem of material adhesion in the grinding process of the vertical ball mill in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of vertical ball mills, and specifically, to a vertical ball mill and method for grinding iron ore into iron concentrate powder. Background Art

[0002] A vertical ball mill is a material grinding device widely used in industries such as mines, chemicals, and building materials. Compared with traditional horizontal ball mills, vertical ball mills have the characteristics of small floor area, low energy consumption, high grinding efficiency, and simple maintenance, so they are widely used in modern industrial production. Although vertical ball mills have many advantages, there are still some problems to be solved in actual applications: during the grinding process, especially when processing materials with high humidity, it is easy for the materials to adhere to the grinding balls or liners, which not only reduces the grinding efficiency but also leads to a decline in product quality. Summary of the Invention

[0003] The present invention provides a vertical ball mill and method for grinding iron ore into iron concentrate powder, which solves the problem of material adhesion during the grinding process of vertical ball mills in related technologies.

[0004] The technical solution of the present invention is as follows:

[0005] A vertical ball mill for grinding iron ore into iron concentrate powder, comprising

[0006] a frame,

[0007] a crushing cylinder, the crushing cylinder is arranged on the frame, and the crushing cylinder has a crushing chamber,

[0008] a liner, the liner is arranged on the inner wall of the crushing chamber, and the liner has a plurality of guiding grooves,

[0009] a rotating member, the rotating member is rotatably arranged on the frame and is located in the crushing chamber,

[0010] a pushing plate, the pushing plate is arranged on the rotating member and is located in the crushing chamber, abuts against the liner, the pushing plate has a high-pressure air path, and the high-pressure air path has air holes, and the air holes are inclined towards the liner,

[0011] grinding balls, the grinding balls are located in the crushing chamber, the pushing plate pushes the grinding balls to move disorderly, and the grinding balls slide along the guiding grooves under the action of the pushing plate and then break away.

[0012] As a further technical solution, the crushing chamber has an inlet and an outlet, and further comprises

[0013] a pneumatic rotary joint, the pneumatic rotary joint is arranged on the rotating member, and the pneumatic rotary joint leads to the high-pressure air path,

[0014] A rotating driving member, which is arranged on the frame and drives the rotating member to rotate.

[0015] A discharge pipe, which is arranged at the outlet.

[0016] An electrostatic eliminator, which is arranged on the discharge pipe.

[0017] As a further technical solution, the pushing plate includes

[0018] A lower fixing member, which is arranged on the rotating member and has a gap with the bottom of the crushing cavity.

[0019] An upper fixing member, which is arranged on the rotating member, is located above the lower fixing member, and is slidably arranged relative to the lining plate.

[0020] A fixing shaft, by which the upper fixing member and the lower fixing member are connected, and the fixing shaft is arranged on the rotating member.

[0021] Pushing vanes, one end of each pushing vane is arranged on the upper fixing member, and the other end is arranged on the lower fixing member, and they are arranged in a circle.

[0022] As a further technical solution, the pushing vanes are arc-shaped vanes, and each pushing vane has a pushing surface, and the pushing surface is spirally arranged along the rotation axis of the rotating member.

[0023] As a further technical solution, the pushing vanes also have a cleaning surface, and the air holes are located on the cleaning surface.

[0024] As a further technical solution, it further includes

[0025] Conductive members, which are arranged on the fixing shaft and are arranged in several rows for discharging static electricity during the ball milling process.

[0026] As a further technical solution, the discharge pipe has a first branch and a second branch, and it further includes

[0027] A blocking member, which is swingably arranged on the frame, and after swinging, the blocking member blocks or cancels blocking the outlet.

[0028] A baffle plate, which is swingably arranged on the discharge pipe. After swinging, the baffle plate closes the first branch or the second branch, and the outlet is communicated with the first branch or the second branch.

[0029] A cleaning member, which is arranged on the frame, and the cleaning member is communicated with the first branch.

[0030] The material receiving part is arranged on the frame, and the material receiving part communicates with the second branch.

[0031] As a further technical solution, the cleaning part includes

[0032] A cleaning box, the first branch communicates with the cleaning box,

[0033] Cleaning rollers, the cleaning rollers are rotatably arranged in the cleaning box, there are three cleaning rollers, and the three cleaning rollers form a cleaning space.

[0034] A ball collecting box is arranged on the frame, on one side of the cleaning box, and the cleaning space leads to the ball collecting box.

[0035] As a further technical solution, it further includes

[0036] A ball feeding part is arranged at the inlet, and has a chute, and the chute leads to the pushing surface.

[0037] A method for grinding iron ore to produce iron concentrate powder uses a vertical ball mill for grinding iron ore to produce iron concentrate powder.

[0038] The working principle and beneficial effects of the present invention are as follows:

[0039] In the present invention, a frame is designed as the basic support structure of the whole equipment for installing and fixing other components. The crushing cylinder is the main working container of the ball mill, which contains a crushing chamber, and the material is ground in this chamber. The lining plate is installed on the inner wall of the crushing chamber to protect the crushing cylinder from wear, and the guiding grooves on the lining plate can help guide the movement track of the grinding balls. This is a rotatable part, which is located inside the crushing chamber and is installed on the frame, and can be rotated by an external driving device. The pushing plate is installed on the rotating part, located in the crushing chamber and in contact with the lining plate. The pushing plate is provided with a high-pressure gas path, and there are air holes in the gas path, and these air holes are inclined towards the lining plate.

[0040] When the gas is ejected through the air holes, a blowing effect can be generated to help separate the material and the grinding balls and reduce the adhesion of the material. The grinding balls are located in the crushing chamber and are pushed by the pushing plate to move disorderly. Under the action of the pushing plate, the grinding balls slide along the guiding grooves on the lining plate and then break away, which can ensure that the grinding balls can effectively contact the material and grind it. Compared with the vertical ball mill of the prior art, by designing the guiding grooves, when the material is crushed, the grinding balls can slide in the guiding grooves first when they are thrown upward, obtaining higher kinetic energy, thereby improving the crushing effect. At the same time, there are several guiding grooves, and the several guiding grooves can make the grinding balls be thrown more evenly, improving the even distribution degree of the grinding balls in the whole crushing chamber, thereby ensuring the crushing degree of the crushed material and improving the crushing effect.

[0041] After the grinding is completed, when the grinding balls are discharged from the crushing cavity, the rotating member rotates in the reverse direction, driving the pushing plate to rotate. The part where the pushing plate abuts against the lining plate scrapes the material, realizing the cleaning of the inner wall. At this time, the high-pressure air flow ejected from the air holes is sufficient to perform cleaning. Under the action of the air flow, the material adhered in the guiding grooves is cleaned up.

[0042] In summary, the design features of this vertical ball mill help to improve the fluidity of the material and reduce the adhesion of the material to the grinding balls. Through the action of the pushing plate and the high-pressure gas, the grinding balls can move disorderly more effectively in the crushing cavity, thereby improving the grinding efficiency. At the same time, the guiding grooves on the lining plate can guide the movement trajectory of the grinding balls, ensuring that the grinding balls can better disperse and contact the material, reducing the adhesion of the material to the grinding balls. Under the action of the high-pressure gas circuit and the air holes, the lining plate is cleaned, avoiding the complex operation procedures of the operators and reducing the operation difficulty of the operators. Description of the Drawings

[0043] The following will further illustrate the above characteristics, technical features, advantages and their implementation manners of the present invention in a clear and understandable manner in combination with the drawings in the preferred embodiments.

[0044] Figure 1 is a schematic structural diagram of the present invention;

[0045] Figure 2 is a schematic diagram of a partial structure of the present invention;

[0046] Figure 3 is an installation schematic diagram of the crushing cylinder and the lining plate of the present invention;

[0047] Figure 4 is an installation structural schematic diagram of the crushing cylinder, the lining plate and the pushing blades of the present invention;

[0048] Figure 5 is a schematic diagram of an internal partial structure of the present invention;

[0049] Figure 6 is a schematic diagram of a partial structure of the pushing blades of the present invention;

[0050] Figure 7 is a schematic structural diagram of the cleaning box of the present invention;

[0051] Figure 8 is a schematic structural diagram of the stopper of the present invention;

[0052] Figure 9 is a schematic structural diagram of the ball-loading member of the present invention.

[0053] In the figure: frame - 1, crushing cylinder - 2, crushing chamber - 201, lining plate - 3, guiding groove - 301, rotating part - 4, pushing plate - 5, high - pressure gas path - 501, air hole - 502, grinding ball - 6, inlet - 202, outlet - 203, pneumatic rotary joint - 7, rotary driving part - 8, discharge pipe - 9, static eliminator - 10, lower fixing part - 503, upper fixing part - 504, fixing shaft - 505, pushing blade - 506, pushing surface - 507, cleaning surface - 508, conductive part - 11, first branch - 901, second branch - 902, blocking part - 12, baffle - 13, cleaning part - 14, material receiving part - 15, cleaning box - 1401, cleaning roller - 1402, cleaning space - 1403, ball receiving box - 1404, ball feeding part - 16, sliding groove - 1601. Detailed implementation manners

[0054] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the specific implementation manners of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to these drawings, and other implementation manners can also be obtained.

[0055] To make the drawings concise, only the parts related to the invention are schematically shown in each drawing, and they do not represent the actual structure of the product. In addition, to make the drawings concise and easy to understand, in some drawings, parts with the same structure or function are only schematically shown for one of them, or only one of them is marked. In this article, "one" not only means "only this one", but also means "more than one" situation, and "several" includes "two" and "more than two".

[0056] In this article, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" 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 directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0057] In addition, in the description of the present application, the terms "first", "second", etc. are only used for distinguishing descriptions, and cannot be understood as indicating or implying relative importance.

[0058] Refer to Figures 1 to 9, which is an embodiment of the present invention, provides a vertical ball mill for grinding iron ore into iron concentrate powder, including a frame 1, a crushing cylinder 2 is arranged on the frame 1, the crushing cylinder 2 has a crushing chamber 201, a lining plate 3, the lining plate 3 is arranged on the inner wall of the crushing chamber 201, and the lining plate 3 has a number of guiding grooves 301. A rotating member 4 is rotatably arranged on the frame 1 and is located in the crushing chamber 201. A pushing plate 5 is arranged on the rotating member 4 and is located in the crushing chamber 201, and abuts against the lining plate 3. The pushing plate 5 has a high-pressure gas path 501, the high-pressure gas path 501 has air holes 502, and the air holes 502 are inclined towards the lining plate 3. Grinding balls 6 are located in the crushing chamber 201, and the pushing plate 5 pushes the grinding balls 6 to move disorderly. The grinding balls 6 slide along the guiding grooves 301 under the action of the pushing plate 5 and then break away.

[0059] In this embodiment, the frame 1 is designed as the basic support structure of the entire device, which is used to install and fix other components. The crushing cylinder 2 is the main working container of the ball mill, and the crushing chamber 201 is included therein, where the material is ground. The lining plate 3 is installed on the inner wall of the crushing chamber 201 to protect the crushing cylinder 2 from wear, and the guiding grooves 301 on the lining plate 3 can help guide the movement trajectory of the grinding balls 6. This is a rotatable component, which is located inside the crushing chamber 201 and is installed on the frame 1, and can be rotated by an external driving device. The pushing plate 5 is installed on the rotating member 4, is located in the crushing chamber 201 and contacts the lining plate 3. The pushing plate 5 is provided with a high-pressure gas path 501, and there are air holes 502 in the gas path, and these air holes 502 are inclined towards the lining plate 3.

[0060] When the gas is ejected through the air holes 502, a blowing effect can be generated to help separate the material and the grinding balls 6 and reduce the adhesion of the material. The grinding balls 6 are located in the crushing chamber 201 and are pushed by the pushing plate 5 to move disorderly. Under the action of the pushing plate 5, the grinding balls 6 slide along the guiding grooves 301 on the lining plate 3 and then break away, so as to ensure that the grinding balls 6 can effectively contact the material and grind it. Compared with the vertical ball mill of the prior art, by designing the guiding grooves 301, when the material is crushed, the grinding balls 6 can slide in the guiding grooves 301 first when being thrown upward, obtaining higher kinetic energy, thereby improving the crushing effect. At the same time, there are a number of guiding grooves 301, and the number of guiding grooves 301 can make the grinding balls 6 be thrown more evenly, improving the uniform distribution degree of the grinding balls 6 in the entire crushing chamber 201, thereby ensuring the crushing degree of the crushed material and improving the crushing effect.

[0061] After the grinding is completed, after the grinding balls 6 are discharged from the crushing chamber 201, the rotating member 4 rotates in reverse, driving the pushing plate 5 to rotate. The part of the pushing plate 5 abutting against the lining plate 3 scrapes the material to clean the inner wall. At this time, the air holes 502 eject a high-pressure air flow sufficient for cleaning, and under the action of the air flow, the material adhering in the guiding grooves 301 is cleaned up.

[0062] In summary, the design features of this vertical ball mill help to improve the fluidity of the material and reduce the adhesion of the material to the grinding balls 6. Through the action of the pushing plate 5 and high-pressure gas, the grinding balls 6 can move more effectively in a disorderly manner within the crushing chamber 201, thereby improving the grinding efficiency. At the same time, the guiding grooves 301 on the lining plate 3 can guide the movement trajectory of the grinding balls 6, ensuring that the grinding balls 6 can better disperse and contact the material, reducing the adhesion of the material to the grinding balls 6. Under the action of the high-pressure gas path 501 and the air holes 502, the lining plate 3 is cleaned, avoiding complex operating procedures for the operator and reducing the operation difficulty of the operator.

[0063] Further, the crushing chamber 201 has an inlet 202 and an outlet 203, and further includes a pneumatic rotary joint 7. The pneumatic rotary joint 7 is arranged on the rotating member 4, the pneumatic rotary joint 7 leads to the high-pressure gas path 501, the rotation driving member 8 is arranged on the frame 1 to drive the rotating member 4 to rotate, the discharge pipe 9 is arranged at the outlet 203, and the static eliminator 10 is arranged on the discharge pipe 9.

[0064] In this embodiment, the inlet 202 and the outlet 203 of the crushing chamber 201 are the positions where the material enters and leaves the crushing chamber 201. The material enters the crushing chamber 201 from the inlet 202 and is discharged from the outlet 203 after grinding. The pneumatic rotary joint 7 allows gas to be transmitted to the device on the high-pressure gas path 501 while the rotating member 4 rotates. It connects the external gas supply source to the high-pressure gas path 501 on the pushing plate 5 to ensure that gas can stably enter the air holes 502 on the pushing plate 5. The rotation driving member 8 is the power source for driving the rotation of the rotating member 4, usually an electric motor or other power device. It is installed on the frame 1 and transmits power to the rotating member 4 through an appropriate transmission mechanism such as gears, belts or chains. The discharge pipe 9 is located at the outlet 203 of the crushing chamber 201 and is used to guide the ground material to be discharged from the crushing chamber 201. The static eliminator 10 is a device for eliminating the static electricity of the material and is installed on the discharge pipe 9. During the grinding process of the material, static electricity may be generated due to reasons such as friction, which may cause the material to adhere to the pipe wall or bond with each other. The static eliminator 10 can help eliminate this static electricity and prevent the material from adhering. The operation mode of the whole vertical ball mill is as follows: The material enters the crushing chamber 201 from the inlet 202 of the crushing chamber 201. The rotation driving member 8 drives the rotation of the rotating member 4, and the rotating member 4 drives the pushing plate 5 to rotate. The high-pressure gas path 501 on the pushing plate 5 receives high-pressure gas through the pneumatic rotary joint 7, and the gas jets out through the air holes 502 to push the grinding balls 6 to move disorderly. The grinding balls 6 slide along the guiding groove 301 on the lining plate 3 under the action of the pushing plate 5, fly out after sliding and contact the material to grind it. The ground material is discharged from the outlet 203 of the crushing chamber 201 and enters the discharge pipe 9. On the discharge pipe 9, the static eliminator 10 eliminates the static electricity on the material to prevent the material from adhering to the pipe wall. This design can effectively improve the grinding efficiency and reduce the adhesion of the material on the grinding balls 6 and the lining plate 3.

[0065] Furthermore, the pushing plate 5 includes a lower fixing member 503, the lower fixing member 503 is arranged on the rotating member 4 and has a gap with the bottom of the crushing chamber 201, an upper fixing member 504 is arranged on the rotating member 4, is located above the lower fixing member 503, and is slidably arranged relative to the lining plate 3. The upper fixing member 504 and the lower fixing member 503 are connected by a fixing shaft 505, the fixing shaft 505 is arranged on the rotating member 4, one end of the pushing blade 506 is arranged on the upper fixing member 504, and the other end is arranged on the lower fixing member 503, and is arranged in a plurality of circumferences.

[0066] In this embodiment, the lower fixing member 503 is installed on the rotating member 4 and maintains a certain gap with the bottom of the crushing chamber 201. The existence of this gap is to ensure the free rotation of the lower fixing member 503 within the crushing chamber 201, and at the same time enable the pushing blade 506 to effectively push the grinding balls 6. The upper fixing member 504 is installed on the rotating member 4, located above the lower fixing member 503, and can slide relative to the liner 3. This design allows the pushing plate 5 to finely adjust the pushing blade 506 according to the different states of the material to adapt to different working conditions. The fixing shaft 505 is used to connect the upper fixing member 504 and the lower fixing member 503 and is fixed on the rotating member 4. This shaft is the rotation center of the pushing plate 5, enabling the pushing plate 5 to rotate together with the rotating member 4. One end of the pushing blade 506 is installed on the upper fixing member 504, the other end is installed on the lower fixing member 503, and multiple pushing blades 506 are distributed in a circular pattern. The function of the pushing blade 506 is to push the grinding balls 6 when the rotating member 4 rotates, causing them to slide along the guiding groove 301 on the liner 3 and disengage, thereby achieving the purpose of grinding the material. When the rotation driving member 8 drives the rotating member 4 to rotate, the pushing plate 5 fixed on the rotating member 4 also rotates accordingly. The pushing blades 506 rotate with the pushing plate 5, and they will push the grinding balls 6 in the crushing chamber 201. Under the action of the pushing blades 506, the grinding balls 6 slide along the guiding groove 301 on the liner 3 and disengage, come into contact with the material and perform grinding. The gap between the lower fixing member 503 and the bottom of the crushing chamber 201 ensures the free rotation of the pushing member, and the sliding design of the upper fixing member 504 enables the pushing plate 5 to adapt to the material state in different situations. This design helps to improve the grinding efficiency, reduce the adhesion of the material on the liner 3, and ensure that the material can be evenly subjected to the grinding action.

[0067] Furthermore, the pushing blade 506 is an arc-shaped blade, and the pushing blade 506 has a pushing surface 507, and the pushing surface 507 is spirally arranged along the rotation axis of the rotating member 4.

[0068] In this embodiment, the pushing blade 506 is an arc-shaped blade. Such a design helps to better guide the grinding balls 6 to slide along the guiding groove 301 on the lining plate 3. The pushing surface 507 is the main contact surface for pushing the grinding balls 6, and the design of this surface is mainly used to control the movement trajectory of the grinding balls 6. The pushing surface 507 is arranged in a spiral shape along the rotation axis of the rotating member 4. This design helps to push the grinding balls 6 to slide along the guiding groove 301 and finally separate when the rotating member 4 rotates through the spiral effect generated by the pushing blade 506, so that the grinding balls 6 move disorderly in the crushing chamber 201, increasing the collision chance between the material and the grinding balls 6 and improving the grinding efficiency. The pushing surface 507 of the arc-shaped blade is an inclined surface, inclined downward to the fixing member 503 and upward to the fixing member 504. By the inclined setting, the damage of the grinding balls 6 to the lining plate 3 can be reduced, and the service life of the lining plate 3 can be prolonged. The inclined pushing surface 507 is more conducive to the disorderly movement of the grinding balls 6. When the pushing plate 5 pushes the grinding balls 6, the inclined pushing surface 507 can make the grinding balls 6 separate from the guiding groove 301 and the pushing surface 507 under the action of gravity, making the grinding effect better and prolonging the service life of the equipment at the same time.

[0069] Furthermore, the pushing blade 506 also has a cleaning surface 508, and the air holes 502 are located on the cleaning surface 508.

[0070] In this embodiment, the cleaning surface 508 is a specific area of the pushing blade 506, which is used to clean the material on the lining plate 3 to prevent the material from adhering to the lining plate 3. The air holes 502 are arranged on the cleaning surface 508. When high-pressure gas is ejected through the air holes 502, it can blow the material on the lining plate 3, reducing the material adhesion and also helping to push the grinding balls 6. The design of the cleaning surface 508 helps to ensure the cleanliness of the surface of the lining plate 3, reduce the material adhesion, and thus improve the grinding efficiency. By using the pushing blade 506 with the cleaning surface 508, this vertical ball mill can more effectively control the movement trajectory of the grinding balls 6 and reduce the adhesion of the material on the lining plate 3, thereby improving the grinding efficiency of the material.

[0071] Furthermore, it also includes a conductive member 11. The conductive member 11 is arranged on the fixed shaft 505 and is arranged in several rows for static electricity conduction during the ball milling process.

[0072] In this embodiment, the conductive members 11 are installed on the fixed shaft 505 and arranged in plurality. The function of these conductive members 11 is to collect and conduct out the static electricity generated by the friction between the grinding balls 6 and the material during the ball milling process. During the ball milling process, static electricity is generated when the grinding balls 6 come into contact with the material. If the static electricity is not conducted out in time, it may cause the material to adhere to the grinding balls 6 or the inner wall of the crushing chamber 201, affecting the grinding efficiency. The presence of the conductive members 11 can effectively conduct out the static electricity and avoid the occurrence of these problems. By using the conductive members 11 to conduct out the static electricity, this vertical ball mill can more effectively control the movement trajectory of the grinding balls 6 and reduce the adhesion of the material on the grinding balls 6 and the inner wall of the crushing chamber 201, thereby improving the grinding efficiency of the material.

[0073] Further, the discharge pipe 9 has a first branch 901 and a second branch 902, and further includes a blocking member 12 which is swingably arranged on the frame 1. After the blocking member 12 swings, it blocks or cancels blocking the outlet 203. A baffle 13 is swingably arranged on the discharge pipe 9. After the baffle 13 swings, it closes the first branch 901 or the second branch 902. The outlet 203 communicates with the first branch 901 or the second branch 902. A cleaning member 14 is arranged on the frame 1 and the cleaning member 14 communicates with the first branch 901. A material receiving member 15 is arranged on the frame 1 and the material receiving member 15 communicates with the second branch 902.

[0074] In this embodiment, the discharge pipe 9 is divided into two branches, one for cleaning and the other for collecting materials. The blocking member 12 is installed on the frame 1 and can swing. When the blocking member 12 swings to a certain position, it can block or cancel blocking the outlet 203 of the crushing chamber 201, thereby controlling whether the material can be discharged from the crushing chamber 201. The blocking member 12 has a spring. When the blocking member 12 blocks the outlet 203, the spring pushes the movable piece on the blocking member 12 to block the outlet 203, making the crushing chamber 201 a smooth cavity. The baffle 13 is installed on the discharge pipe 9 and can swing. The swing of the baffle 13 can close the first branch 901 or the second branch 902, thereby determining whether the material enters the cleaning member 14 or the material receiving member 15. The cleaning member 14 is installed on the frame 1 and is connected to the first branch 901. When cleaning is required, the baffle 13 closes the second branch 902 and the material enters the cleaning member 14 through the first branch 901. The material receiving member 15 is also installed on the frame 1 and is connected to the second branch 902. When collecting materials is required, the baffle 13 closes the first branch 901 and the material enters the material receiving member 15 through the second branch 902. Through this design, the vertical ball mill can not only efficiently grind materials, but also conveniently clean and collect materials, improving the flexibility and practicality of the equipment. The design of the blocking member 12 also enables the equipment to perform continuous feeding and grinding functions without stopping for discharging, improving the grinding efficiency of the equipment.

[0075] Further, the cleaning member 14 includes a cleaning box 1401. The first branch 901 is communicated with the cleaning box 1401. The cleaning roller 1402 is rotatably arranged in the cleaning box 1401. There are three cleaning rollers 1402, and the three cleaning rollers 1402 form a cleaning space 1403. The ball collecting box 1404 is arranged on the frame 1 and is located on one side of the cleaning box 1401. The cleaning space 1403 leads to the ball collecting box 1404.

[0076] In this embodiment, the cleaning box 1401 is communicated with the first branch 901 and is used to receive the materials coming from the discharge pipe 9. The cleaning rollers 1402 are installed in the cleaning box 1401 and there are three in total, and they form a cleaning space 1403. These cleaning rollers 1402 can rotate to clean the impurities on the grinding balls 6 through their rotation. The ball collecting box 1404 is installed on the frame 1 and is located on one side of the cleaning box 1401. The cleaning space 1403 leads to the ball collecting box 1404. The ball collecting box 1404 is used to collect the grinding balls 6 separated from the cleaning space 1403. This design helps to ensure the effective separation and recovery of the grinding balls 6 in the materials, reduce the dirt on the grinding balls 6, and extend the service life of the grinding balls 6. At the same time, this design also simplifies the cleaning process and improves the overall efficiency of the equipment.

[0077] Further, it further includes a ball feeding member 16. The ball feeding member 16 is arranged at the inlet 202 and has a chute 1601. The chute 1601 leads to the pushing surface 507.

[0078] In this embodiment, the ball feeding member 16 is installed at the inlet 202 of the crushing chamber 201 and is used to feed the grinding balls 6 into the crushing chamber 201. The ball feeding member 16 has a chute 1601, and this chute 1601 leads to the pushing surface 507 on the pushing plate 5. This means that the grinding balls 6 can directly slide down through the chute 1601 onto the pushing surface 507, and then be driven by the pushing plate 5 to perform the grinding operation. By using the ball feeding member 16, it is more convenient to add new grinding balls 6 into the crushing chamber 201 to ensure that there are sufficient grinding balls 6 during the grinding process. The design of the chute 1601 enables the grinding balls 6 to directly slide down onto the pushing surface 507, facilitating the quick start of the grinding balls 6 and their participation in the grinding process. The ball feeding member 16 can be designed as an automatic ball feeding device, reducing the complex operation of the grinding balls 6 when putting them into the ball mill.

[0079] A method for grinding iron ore into iron concentrate powder uses a vertical ball mill for grinding iron ore into iron concentrate powder.

[0080] In this embodiment, it includes the following steps:

[0081] Prepare materials: First, prepare the iron ore materials to be ground and ensure that the materials meet the feeding requirements of the ball mill.

[0082] Loading grinding balls 6: The grinding balls 6 are fed into the crushing chamber 201 through the ball-feeding part 16. The grinding balls 6 slide down through the chute 1601 onto the pushing surface 507 of the pushing plate 5, preparing to participate in the grinding process.

[0083] Starting the equipment: Start the rotation driving part 8 to make the rotating part 4 start to rotate. The pushing plate 5 rotates accordingly, driving the grinding balls 6 to move.

[0084] Material feeding: Feed the iron ore material into the crushing chamber 201 through the inlet 202 of the crushing chamber 201. After the material enters the crushing chamber 201, the grinding balls 6 contact the material through the pushing action of the pushing plate 5, and the grinding process starts.

[0085] Grinding process: The pushing blades 506 on the pushing plate 5 push the grinding balls 6 to slide along the guiding groove 301 on the lining plate 3 through its pushing surface 507 and cleaning surface 508. High-pressure gas is ejected from the air holes 502 on the cleaning surface 508. On the one hand, it can clean the lining plate 3 to reduce material adhesion; on the other hand, the air flow can also help push the grinding balls 6 to make them slide along the guiding groove 301. The conductive part 11 is installed on the fixed shaft 505. When the pushing plate 5 rotates, the conductive part 11 will also rotate accordingly, thus contacting the grinding balls 6, collecting static electricity and conducting it out. Material separation and cleaning: The ground material is discharged from the crushing chamber 201 through the discharge pipe 9. When cleaning is needed, the material is guided to the cleaning part 14 through the blocking part 12 and the baffle 13 for cleaning treatment. The cleaning roller 1402 in the cleaning part 14 helps to separate the grinding balls 6 and the material. The cleaned material continues to move forward, while the grinding balls 6 are collected in the ball collection box 1404. Material collection: Collect the processed material through the material receiving part 15. Monitoring and adjustment: During the whole process, monitor the grinding effect according to the actual situation and adjust the equipment parameters such as rotation speed and material feeding amount as needed to ensure the best grinding effect. After the grinding is completed, the rotating part 4 rotates in reverse to clean the lining plate 3.

[0086] Through the above steps, using this vertical ball mill, the iron ore can be efficiently ground into iron concentrate powder, while reducing the adhesion of the material on the grinding balls 6 and the inner wall of the crushing chamber 201, improving the grinding efficiency of the material and reducing the labor intensity of the operators.

[0087] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limitations. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A vertical ball mill for grinding iron ore into iron concentrate powder, characterized in that, including a frame (1), a crushing cylinder (2) disposed on the frame (1), the crushing cylinder (2) having a crushing chamber (201), a lining plate (3) disposed on the inner wall of the crushing chamber (201), the lining plate (3) having a plurality of guiding grooves (301), a rotating member (4) rotatably disposed on the frame (1) and located within the crushing chamber (201), a pushing plate (5) disposed on the rotating member (4) and located within the crushing chamber (201), abutting against the lining plate (3), the pushing plate (5) having a high-pressure gas path (501), the high-pressure gas path (501) having air holes (502) that are inclined towards the lining plate (3), grinding balls (6) located within the crushing chamber (201), the pushing plate (5) pushing the grinding balls (6) to move disorderly, and the grinding balls (6) sliding along the guiding grooves (301) and then detaching under the action of the pushing plate (5), the pushing plate (5) includes a lower fixing member (503) disposed on the rotating member (4) and having a gap with the bottom of the crushing chamber (201), an upper fixing member (504) disposed on the rotating member (4), located above the lower fixing member (503) and slidably disposed relative to the lining plate (3), a fixing shaft (505) connecting the upper fixing member (504) and the lower fixing member (503), the fixing shaft (505) being disposed on the rotating member (4), pushing vanes (506) with one end disposed on the upper fixing member (504) and the other end disposed on the lower fixing member (503), arranged in a plurality of circumferences, the pushing vanes (506) being arc-shaped vanes, the pushing vanes (506) having a pushing surface (507) spirally arranged along the rotation axis of the rotating member (4), the pushing vanes (506) further having a cleaning surface (508), and the air holes (502) being located on the cleaning surface (508).

2. The vertical ball mill for grinding iron ore into iron concentrate powder according to claim 1, wherein, The crushing chamber (201) has an inlet (202) and an outlet (203), and further includes a pneumatic rotary joint (7) disposed on the rotating member (4), the pneumatic rotary joint (7) leading to the high-pressure gas path (501), a rotation driving member (8) disposed on the frame (1) for driving the rotating member (4) to rotate, a discharge pipe (9) disposed at the outlet (203), an electrostatic eliminator (10) disposed on the discharge pipe (9).

3. The vertical ball mill for grinding iron ore into iron concentrate powder according to claim 1, wherein, It further includes conductive members (11) disposed on the fixing shaft (505), arranged in a plurality of numbers, for conducting static electricity during the ball milling process.

4. The vertical ball mill for grinding iron ore into iron concentrate powder according to claim 2, characterized in that, The discharge pipe (9) has a first branch (901) and a second branch (902), and further includes a stopper (12) swingably arranged on the frame (1), and after swinging, the stopper (12) blocks or cancels blocking the outlet (203). a baffle (13) swingably arranged on the discharge pipe (9), and after swinging, the baffle (13) closes the first branch (901) or the second branch (902), and the outlet (203) communicates with the first branch (901) or the second branch (902). a cleaning member (14) arranged on the frame (1), and the cleaning member (14) communicates with the first branch (901). a material receiving member (15) arranged on the frame (1), and the material receiving member (15) communicates with the second branch (902).

5. The vertical ball mill for grinding iron ore into iron concentrate powder according to claim 4, characterized in that, The cleaning member (14) includes a cleaning box (1401), and the first branch (901) communicates with the cleaning box (1401). cleaning rollers (1402) rotatably arranged in the cleaning box (1401), there are three cleaning rollers (1402), and the three cleaning rollers (1402) form a cleaning space (1403). a ball collecting box (1404) arranged on the frame (1) and located on one side of the cleaning box (1401), and the cleaning space (1403) leads to the ball collecting box (1404).

6. The vertical ball mill for grinding iron ore into iron concentrate powder according to claim 2, wherein, Further included is a ball feeding member (16) arranged at the inlet (202), having a chute (1601), and the chute (1601) leads to the pushing surface (507).

7. A method for grinding iron ore to produce iron concentrate powder, characterized in that, Use the vertical ball mill for grinding iron ore into iron concentrate powder according to any one of claims 1 to 6.

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