Rod mill and steel slag treatment process

Abstract

The invention relates to the technical field of steel slag treatment equipment, and provides a rod mill and a steel slag treatment process. The grinding cylinder is rotationally arranged on the machine body, a grinding space is formed in the grinding cylinder and used for containing grinding rods and steel slag, and the grinding space is provided with a material inlet and a material outlet; the rotary material guiding piece is rotationally arranged in the material grinding space and located on one side of the material outlet, the rotary material guiding piece is provided with a first material guiding inclined face, and the first material guiding inclined face is configured to be used for driving steel slag to move towards the material outlet after being driven by the rotary material guiding piece to rotate forwards and used for driving steel slag to move towards the material outlet after being driven by the rotary material guiding piece to rotate reversely. The device is used for driving steel slag to move away from the material outlet. By means of the technical scheme, the technical problem that in the dry process of steel slag treatment in the related technology, after machining is completed and feeding is not conducted any more, the excess material discharging efficiency is low is solved.

Description

Technical Field

[0001] Embodiments of the present disclosure relate to the technical field of steel slag processing equipment, and in particular, to a rod mill and a steel slag processing process. Background Art

[0002] With the rapid development of the steel industry, steel slag, as the main solid waste generated in the steelmaking process, has become the focus of industry attention. Steel slag contains a certain amount of metallic iron and other usable components, which need to be separated and recycled through crushing, grinding and other processes. Rod mill, as a high-efficiency grinding equipment, is widely used in the field of steel slag treatment due to its unique advantage of using steel rod media to impact and grind materials.

[0003] During normal operation, the steel slag inside the rod mill is gradually refined under the action of the grinding medium, and the material reaching a certain particle size will be discharged from the discharge port under the guidance of the rotation of the rod mill and the internal structure. This process is relatively smooth and can meet the discharge requirements in normal production. However, after the steel slag treatment is completed and no more feeding is done, the work of completely discharging the remaining materials faces certain problems. After the existing rod mill is completed, the method of emptying the material mainly relies on the continuous operation of the rod mill to push the remaining material to slowly discharge from the discharge port on the side of the feed port. However, this method has many disadvantages, the discharge efficiency is extremely low, and it takes a lot of time. Moreover, even if it runs for a long time, it is difficult to completely discharge the remaining material, and there will always be some material remaining inside the rod mill. The remaining remaining material not only affects the quality of the subsequent batches of steel slag treatment, increases the probability of defective products, but also causes increased wear inside the rod mill, shortens the service life of the equipment, and increases the cost of repair and maintenance. In addition, the inability to completely discharge the residual material greatly limits the continuous operation capacity of the rod mill, reduces the production efficiency of the entire slag treatment process, and is difficult to adapt to the current large-scale and high-efficiency slag treatment needs.

[0004] In summary, how to efficiently and thoroughly discharge the residual material in the rod mill after no more material is fed has become a key technical problem that needs to be urgently solved in the current field of steel slag treatment. Summary of the invention

[0005] To overcome the above-mentioned defects, the embodiments of the present disclosure provide a rod mill and a steel slag treatment process, which solve the technical problems in the dry process of steel slag treatment in the related art, that is, after the processing is completed and no more feeding is required, the residual material discharge efficiency is low and it is difficult to completely discharge the residual material.

[0006] According to one aspect, at least one embodiment of the present disclosure provides a rod mill for grinding steel slag using grinding rods, comprising: Body; A grinding cylinder, the grinding cylinder is rotatably arranged on the machine body, the grinding cylinder has an abrasive space inside, the abrasive space is used to accommodate the grinding rod and the steel slag, and the abrasive space has a material inlet and a material outlet; A rotating material guide member is rotatably arranged in the abrasive space and is located on one side of the material outlet. The rotating material guide member has a first material guide slope. The first material guide slope is configured to drive the steel slag to move toward the material outlet after being driven by the rotating material guide member to rotate in the forward direction, and to drive the steel slag to move away from the material outlet after being driven by the rotating material guide member to rotate in the reverse direction.

[0007] For example, at least one embodiment of the present disclosure provides a rod mill, wherein the abrasive space is a cylindrical space, the axial direction of the abrasive space is horizontal, the material inlet is located at one end of the abrasive space, the material outlet is located on the cylinder wall away from the end of the material inlet, and the rotating axis of the rotating material guide coincides with the axis of the abrasive space.

[0008] For example, at least one embodiment of the present disclosure provides a rod mill, wherein the material outlets are arranged circumferentially on the outer wall of the grinding cylinder, and further comprises: The baffle is rotatably arranged on the inner wall of the abrasive space at one end away from the material inlet, the rotating material guide is laterally slidably arranged on the baffle, the rotating material guide is located on the side of the material outlet close to the axis direction of the abrasive space, the baffle is annular, and the baffle is configured to block or unblock the material outlet after sliding laterally.

[0009] For example, in at least one embodiment of the present disclosure, a rod mill is provided, wherein the outer wall of the baffle has a material guide notch, and the inner diameter of the material guide notch gradually decreases from the direction close to the material inlet to the direction away from the material inlet, and the material guide notch has a material guide inlet, a material guide outlet and a guide slope, the material guide inlet is toward the material inlet, the material guide outlet is toward the material outlet, and the guide slope is used to guide the ground steel slag from the material guide inlet to the material guide outlet.

[0010] For example, at least one embodiment of the present disclosure provides a rod mill, wherein the cylinder wall of the abrasive space has a plurality of ridges, the plurality of ridges are arranged on the inner circumference of the abrasive space, and auxiliary grinding grooves are formed between adjacent ridges.

[0011] For example, at least one embodiment of the present disclosure provides a rod mill, wherein both ends of the auxiliary grinding groove are respectively connected to the material inlet and the material outlet, and the end of the auxiliary grinding groove close to the material inlet has a lifting slope, and after the grinding rod moves laterally in the auxiliary grinding groove, one end is used for slidingly abutting against the lifting slope, and after sliding on the lifting slope, the grinding rod is inclined relative to the length direction of the auxiliary grinding groove, and together with the bottom wall of the auxiliary grinding groove, it forms a material cleaning ramp, and the material cleaning ramp is used to guide the processed steel slag to the material outlet.

[0012] For example, at least one embodiment of the present disclosure provides a rod mill, further comprising: A push rod member, which is laterally slidably arranged on the rotating shaft of the rotating material guide member, and has a push rod portion and a notch reset portion. A push rod channel is formed between the push rod portion and the inner wall of the abrasive space, and the push rod channel is used to accommodate an end of the grinding rod away from the material inlet. A reset channel is formed between the notch reset portion and the inner wall of the abrasive space; the push rod portion is arc-shaped, and the width of the push rod channel gradually increases from one end to the other end, and the minimum width is greater than the diameter of the push rod portion.

[0013] For example, at least one embodiment of the present disclosure provides a rod mill, wherein the notch resetting portion has a resetting auxiliary inclined surface, the blocking member has a receiving groove, and the push rod member is configured to enter or leave the receiving groove after being driven by the rotating material guide member to slide laterally.

[0014] For example, at least one embodiment of the present disclosure provides a rod mill, further comprising: A discharge hopper is arranged on the grinding cylinder, the discharge hopper has a discharge channel, the discharge channel has a main outlet, and the plurality of material outlets are connected to the outside through the discharge channel and the main outlet.

[0015] A steel slag processing process, using any one of the rod mills described above to perform steel slag rod grinding processing, using a steel slag processing system to process the steel slag, including a first circuit and a second circuit; The first circuit includes a tilting screening device, a storage bin 1, a vibrating feeder 1, a magnetic separator 1, a vibrating feeder 2 and a storage bin 2 which are sequentially connected to the material source; The second circuit includes a buffer bin 1 and the rod mill 1 which are sequentially connected to the coarse material outlet of the vibrating feeder 1; the discharge port of the rod mill 1 leads to the magnetic separator 1; The slag processing method comprises the following steps: S1, converter slag enters the tilting screening device through the conveying equipment; the large pieces of material in the slag are separated out, so that the large pieces of slag enter the repeated steelmaking link, and the screened slag falls into the storage bin 1 for temporary storage; the vibrating feeder 1 at the bottom of the storage bin 1 sends the slag to the magnetic separator 1 to separate the magnetic and non-magnetic materials, and the separated fine material is sent to the storage bin 2 by the vibrating feeder 2; S2. The coarse material from the vibrating feeder 1 enters the buffer bin 1, and then enters the rod mill 1 for grinding; the material ground by the rod mill 1 is sent to the magnetic separator 1, and the material separated by the magnetic separator 1 is recycled according to the above process to achieve efficient utilization of steel slag.

[0016] The beneficial effects of the embodiments of the present disclosure are: In the present disclosure, during normal operation, when the rotating guide member rotates forward, its first guide slope will drive the steel slag to move toward the material outlet, promoting the smooth discharge of the steel slag that has reached the grinding requirements. After the steel slag treatment is completed and no more feeding is done, the rotating guide member rotates in the opposite direction, and the first guide slope drives the steel slag to move in the direction away from the material outlet, gathers the steel slag that may have been left, and then rotates forward to push the gathered steel slag to the material outlet for discharge. This structural action brings significant beneficial effects: first, in the normal grinding process, the forward rotation of the rotating guide member can assist the steel slag to be discharged more quickly and efficiently, thereby improving production efficiency. Secondly, in the stage of discharging the residual material, the discharge efficiency of the residual material is greatly improved by the method of reverse rotation to gather the steel slag and then discharge it forward, which reduces the time consumption. In addition, the residual material can be discharged more thoroughly, avoiding the influence of the residual material on the quality of the subsequent batch of steel slag treatment, and reducing the defective rate. At the same time, the thorough discharge of the residual material reduces the wear on the inside of the rod mill, prolongs the service life of the equipment, and reduces the cost of repair and maintenance. In addition, the efficient and thorough discharging method improves the continuous operation capacity of the rod mill, adapts to the needs of large-scale and efficient slag treatment, and improves the production efficiency and economic benefits of the slag treatment process as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the description of the embodiments of the present disclosure. Obviously, the drawings described below are only some exemplary embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on the contents of the exemplary embodiments of the present disclosure and these drawings without creative work.

[0018] Figure 1 This is a schematic structural diagram of a rod mill in one embodiment of the present disclosure; Figure 2 for Figure 1 Schematic diagram of the internal structure in the embodiment of; Figure 3 for Figure 2 A partial enlarged structural diagram of the middle part; Figure 4 for Figure 2 A schematic diagram of the partially enlarged structure of the middle B part; Figure 5 for Figure 1 A schematic diagram of the internal structure of another embodiment of the present invention from another perspective; Figure 6 for Figure 5 A schematic diagram of the partially enlarged structure of the middle C part; Figure 7 Schematic diagram of the slag treatment process disclosed in this disclosure.

[0019] In the figure: body 1, grinding cylinder 2, grinding space 201, material inlet 202, material outlet 203, ridge 204, auxiliary grinding groove 205, lifting slope 206, cleaning ramp 207, rotating material guide member 3, first material guide slope 301, stopper 4, material guide notch 401, material guide inlet 402, material guide outlet 403, guide slope 404, receiving groove 405, push Rod member-5, push rod part-501, notch reset part-502, push rod channel-503, reset channel-504, reset auxiliary slope-503, discharge hopper-6, discharge channel-601, main outlet-602, tipping screening device 7, storage bin-8, vibrating feeder-9, magnetic separator-10, vibrating feeder-11, storage bin-12, buffer bin-13, rod mill-14. DETAILED DESCRIPTION

[0020] The present disclosure is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present disclosure, rather than to limit the present disclosure.

[0021] In order to simplify the drawings, only the parts related to the disclosure are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0022] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this disclosure can be understood according to specific circumstances.

[0023] In the present disclosure, unless otherwise expressly specified and limited, a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being “above”, “above”, and “above” a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0024] In the description of this embodiment, terms such as "up", "down", "left", and "right" and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present disclosure.

[0025] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0026] like Figure 1 to Figure 7 As shown, a rod mill in one embodiment of the present disclosure is shown, which is used to grind steel slag using a grinding rod, including a machine body 1; a grinding cylinder 2 is rotatably arranged on the machine body 1, and the grinding cylinder 2 has an abrasive space 201 inside, the abrasive space 201 is used to accommodate the grinding rod and steel slag, and the abrasive space 201 has a material inlet 202 and a material outlet 203; a rotating material guide member 3 is rotatably arranged in the abrasive space 201, and is located on one side of the material outlet 203, and the rotating material guide member 3 has a first material guide slope 301, and the first material guide slope 301 is configured to, after being driven by the rotating material guide member 3 to rotate forward, drive the steel slag to move toward the material outlet 203, and after being driven by the rotating material guide member 3 to rotate reversely, drive the steel slag to move away from the material outlet 203.

[0027] In this embodiment, during normal operation, the rotating guide member 3 rotates forward all the time, and its first guide slope 301 drives the steel slag to move toward the material outlet 203, promoting the smooth discharge of the steel slag that has met the grinding requirements. After all normal discharges are completed, the rotating guide member 3 performs the last reverse rotation, and the first guide slope 301 drives the steel slag to move away from the material outlet 203, gathers the steel slag that may remain at the material outlet, and then rotates forward again to push the gathered steel slag to the material outlet 203 for discharge. This structural action brings significant beneficial effects: First, during normal grinding, the continuous forward rotation of the rotating guide member 3 can assist the steel slag to be discharged more continuously and at a controllable and stable discharge rate, thereby improving production efficiency. Secondly, in the final stage of discharging the residual material, the residual material can be more thoroughly discharged by rotating the gathered steel slag in the reverse direction and then discharging it forward, thereby avoiding the influence of the residual material on the quality of subsequent batches of steel slag treatment, and reducing the defective rate. At the same time, the thorough discharge of the residual material reduces the wear on the inside of the rod mill and extends the service life of the equipment. In addition, the efficient and thorough discharging method improves the continuous operation capacity of the rod mill, adapts to the needs of large-scale and efficient slag treatment, and improves the production efficiency and economic benefits of the slag treatment process as a whole.

[0028] In some examples, the abrasive space 201 is a cylindrical space, the axis direction of the abrasive space 201 is horizontal, the material inlet 202 is located at one end of the abrasive space 201, the material outlet 203 is located on the cylinder wall away from the end of the material inlet 202, and the rotating axis of the rotating material guide 3 coincides with the axis of the abrasive space 201.

[0029] During operation, when the rod mill operates normally, the steel slag enters the abrasive space 201 from the material inlet 202 and is ground under the action of the grinding rod. As the rotating guide member 3 rotates forward, since its rotating axis coincides with the axis of the abrasive space 201, the first guide slope 301 can smoothly push the ground steel slag to the material outlet 203 along the horizontal direction, thereby achieving efficient discharge. After all normal discharges are completed, the rotating guide member 3 performs the last reverse rotation, gathers the residual materials scattered in the abrasive space 201 and near the material outlet 203, and then rotates forward again to discharge all the residual materials. This structural design brings many beneficial effects. First, the abrasive space 201 arranged horizontally and the sliding direction of the rotating guide member 3 adapted thereto make the movement of the steel slag during the grinding and discharge process smoother, reducing resistance and jamming. Second, the material inlet 202 and the material outlet 203 are reasonably arranged, which is convenient for feeding and discharging operations and improves work efficiency. Thirdly, the coincidence design of the rotating axis of the rotating guide member 3 and the axis of the abrasive space 201 ensures the stability and uniformity of the material guide, and avoids the poor material guide or local accumulation caused by eccentric rotation. Fourthly, through this efficient and centralized material guide method, the residual material can be discharged more quickly and thoroughly, improving the discharge efficiency and quality, reducing the adverse effects of residual material on the equipment and subsequent production, extending the service life of the equipment, reducing production costs, and enhancing the reliability and adaptability of the rod mill in slag treatment.

[0030] In some examples, there are several material outlets 203, which are arranged circumferentially on the outer wall of the grinding cylinder 2, and also include a baffle 4, which is rotatably set on the inner wall of the abrasive space 201 away from the material inlet 202. The rotating material guide member 3 is laterally slidably set on the baffle 4. The rotating material guide member 3 is located on the side of the material outlet 203 close to the axial direction of the abrasive space 201. The baffle 4 is annular and is configured to block or unblock the material outlet 203 after sliding laterally.

[0031] In this embodiment, when the rod mill is working normally, the stopper 4 slides to increase the opening size of the material outlet 203, and the rotating guide member 3 rotates forward to push the ground slag to the material outlet 203, and the slag is discharged from multiple material outlets 203 at the same time, thereby improving the discharge efficiency. When the slag processing is completed and no more feeding is required to discharge the residual material, the stopper 4 slides to reduce the opening size of the material outlet 203, and the rotating guide member 3 first rotates in the opposite direction to gather the residual material, and then the stopper 4 slides again to increase the opening size of the material outlet 203, and the rotating guide member 3 rotates forward to discharge the residual material. This structural action brings obvious beneficial effects. First, multiple circumferentially arranged material outlets 203 increase the discharge channel, greatly improving the discharge speed during normal operation. Secondly, the setting of the stopper 4 can flexibly control the size of the opening of the material outlet 203, reduce the opening when it is necessary to gather the residual material, ensure the centralized processing of the residual material, and improve the efficiency and effect of discharging the residual material. Furthermore, this structural coordination enables the rod mill to achieve optimized material processing in different working stages, reduce residual material, ensure efficient operation of the equipment and the quality of slag processing, extend the service life of the equipment and reduce maintenance costs.

[0032] In some examples, the outer wall of the baffle 4 has a material guide notch 401, the inner diameter of the material guide notch 401 gradually decreases from close to the material inlet 202 to away from the material inlet 202, the material guide notch 401 has a material guide inlet 402, a material guide outlet 403 and a guide slope 404, the material guide inlet 402 is toward the material inlet 202, the material guide outlet 403 is toward the material outlet 203, and the guide slope 404 is used to guide the ground slag from the material guide inlet 402 to the material guide outlet 403.

[0033] In this embodiment, when the rod mill is working, after the steel slag is ground to a certain extent, along with the rotation of the rotating guide member 3 and the rotation of the rod mill itself, the steel slag will enter the guide inlet 402 of the guide notch 401. Due to the action of the guide slope 404, the steel slag will gradually move along the slope toward the guide outlet 403. First, the design of the gradually narrowing inner diameter of the guide notch 401 can gather the steel slag, so that the steel slag flows more concentratedly to the guide outlet 403, thereby improving the guide efficiency. Secondly, the guide slope 404 can effectively guide the flow direction of the steel slag, reduce the accumulation and blockage of the steel slag on the baffle 4, and ensure smooth material transmission. Furthermore, this precise guide design can better control the discharge position and speed of the steel slag, and enhance the working stability and reliability of the rod mill.

[0034] In some examples, the cylindrical wall of the abrasive space 201 has a plurality of ridges 204 , and the plurality of ridges 204 are arranged on the inner circumference of the abrasive space 201 , and auxiliary grinding grooves 205 are formed between adjacent ridges 204 .

[0035] In this embodiment, when the rod mill is running, the grinding rod grinds the steel slag in the abrasive space 201. During the grinding process, the steel slag interacts with the ridges 204 and the auxiliary grinding grooves 205. The ridges 204 can increase the contact area and friction with the steel slag, thereby improving the grinding effect. The auxiliary grinding grooves 205 can accommodate part of the steel slag, so that the steel slag is subjected to a more concentrated grinding force in the groove. On the one hand, this design increases the points and areas of action of the grinding by the presence of the ridges 204 and the auxiliary grinding grooves 205, so that the steel slag can be ground more fully and evenly, thereby improving the quality and efficiency of the grinding. On the other hand, this structure helps to improve the wear resistance of the inner wall of the abrasive space 201, extend the service life of the grinding cylinder 201, and reduce the equipment maintenance cost. At the same time, the circumferentially arranged ridges 204 and the auxiliary grinding grooves 205 can better adapt to the movement law of the steel slag in the abrasive space 201, making the grinding process more stable and reliable.

[0036] In some examples, one end of the auxiliary grinding groove 205 close to the material inlet 202 has a lifting slope 206, and after the grinding rod moves laterally in the auxiliary grinding groove 205, one end is used to slide and abut against the lifting slope 206. After sliding on the lifting slope 206, the grinding rod is inclined relative to the length direction of the auxiliary grinding groove 205, and together with the bottom wall of the auxiliary grinding groove 205, it forms a cleaning ramp 207, which is used to guide the processed slag to the material outlet 203.

[0037] In this embodiment, when the rod mill is working, the grinding rod moves laterally in the auxiliary grinding groove 205, and one end of the grinding rod slides against the lifting inclined surface 206. After sliding on the lifting inclined surface 206, the grinding rod is tilted relative to the length direction of the auxiliary grinding groove 205, and together with the bottom wall of the auxiliary grinding groove 205, it forms a cleaning chute 207. During the grinding process, the steel slag enters the auxiliary grinding groove 205. With the movement of the grinding rod and the action of the lifting inclined surface 206, the processed steel slag can be smoothly guided to the material outlet 203 along the cleaning chute 207. On the one hand, due to the cooperation of the lifting inclined surface 206 and the cleaning chute 207, this structural design enables the steel slag to move more automatically from the auxiliary grinding groove 205 to the material outlet 203, thereby improving the efficiency of discharging and reducing the retention time of the steel slag in the grinding cylinder. On the other hand, this inclined guiding structure helps to ensure a clear discharge path for the steel slag, avoids the accumulation and blockage of the steel slag in the auxiliary grinding groove, and ensures the continuity and stability of the grinding work. Thirdly, by optimizing the discharge path of slag, the treated slag can be discharged more effectively and in a timely manner, thus improving the overall working efficiency of the rod mill and enhancing the equipment's ability and effect in treating slag.

[0038] In some examples, a push rod member 5 is further included, which is laterally slidably arranged on the rotating shaft of the rotating material guide member 3. The push rod member 5 has a push rod portion 501 and a notch reset portion 502. A push rod channel 503 is formed between the push rod portion 501 and the inner wall of the abrasive space 201. The push rod channel 503 is used to accommodate one end of the grinding rod away from the material inlet 202. A reset channel 504 is formed between the notch reset portion 502 and the inner wall of the abrasive space 201. The push rod portion 501 is arc-shaped, and the width of the push rod channel 503 gradually increases from one end to the other end, and the minimum width is greater than the diameter of the push rod portion 501.

[0039] In this embodiment, during operation, when the rotating guide member 3 rotates, driving the push rod member 5 to move, one end of the grinding rod enters the push rod channel 503. As the width of the push rod channel 503 gradually decreases in the direction of rotation, the grinding rod will be gradually squeezed and form a state of tilting toward the inner wall of the auxiliary grinding groove in a few auxiliary grinding grooves located on the side wall, thereby forming a short but relatively stable material clearing ramp. First, the distribution of the grinding rod in the abrasive space 201 can be changed specifically, increasing the contact area and grinding opportunity with the steel slag, thereby improving the efficiency and quality of grinding. Secondly, the inclined grinding rod formed in the specific auxiliary grinding groove can better handle some difficult-to-grind areas, making the grinding of the steel slag more uniform and thorough. Furthermore, through this precise adjustment of the distribution of the grinding rods, the energy loss in the grinding process is reduced, and the overall operating efficiency of the equipment is improved. Finally, this unique design helps to extend the service life of the grinding rods, reduce the maintenance cost of the equipment, and improve the comprehensive performance of the rod mill. The notch reset portion 502 and the inner wall of the abrasive space 201 form a reset channel 504, which can return the grinding rod to the initial position when needed to prepare for the next grinding and expansion, thereby ensuring the continuity and stability of the rod mill.

[0040] In some examples, the notch reset portion 502 has a reset auxiliary slope 503 , the blocking member 4 has a receiving groove 405 , and the push rod member 5 is configured to enter or leave the receiving groove 405 after being driven by the rotating material guide member 3 to slide laterally.

[0041] In the present embodiment, during the operation of the rod mill, when the rotating guide member 3 drives the push rod member 5 to slide horizontally, the push rod member 5 will enter or leave the receiving groove 405. In the process of the push rod member 5 entering the receiving groove 405, the reset auxiliary inclined surface 503 plays a guiding and buffering role, so that the push rod member 5 can enter the receiving groove 405 more smoothly. First, the reset auxiliary inclined surface 503 can reduce the impact and wear between the push rod member 5 and the receiving groove 405, and extend the service life of the components. Secondly, the close fit between the push rod member 5 and the receiving groove 405 makes the entire structure more compact and stable, ensuring the position accuracy and movement accuracy of each component during the working process. Furthermore, this precise fit and motion control helps to improve the working efficiency and reliability of the rod mill, and ensure that the grinding and discharging process of the steel slag can proceed smoothly.

[0042] In some examples, a discharge hopper 6 is further included. The discharge hopper 6 is disposed on the grinding cylinder 2 . The discharge hopper 6 has a discharge channel 601 . The discharge channel 601 has a total outlet 602 . The plurality of material outlets 203 are connected to the outside through the discharge channel 601 and the total outlet 602 .

[0043] In this embodiment, when the rod mill is working, the steel slag discharged from several material outlets 203 will converge through the discharge channel 601, and finally be discharged to the outside from the main outlet 602. This structural design brings significant beneficial effects. First, the discharge hopper 6 can collect and guide the steel slag discharged from multiple material outlets 203, avoiding the dispersion and chaotic discharge of the steel slag, making the discharge more orderly and controllable. Secondly, discharging through a unified main outlet 602 is convenient for subsequent transportation and processing operations, and improves the efficiency and convenience of the entire steel slag processing process. Furthermore, the setting of the discharge hopper 6 can play a certain buffering and sorting role on the discharged steel slag, reduce the impact and pollution of the steel slag on the surrounding environment, and improve the working environment.

[0044] This embodiment also proposes a steel slag processing process, using a rod mill to perform steel slag rod grinding processing, and using a steel slag processing system to process the steel slag, including a first circuit and a second circuit; The first circuit includes a tilting screening device 7, a storage bin 1 8, a vibrating feeder 1 9, a magnetic separator 1 10, a vibrating feeder 2 11 and a storage bin 2 12 which are sequentially connected to the material source; The second circuit includes a buffer bin 13 and a rod mill 14 which are connected in sequence to the coarse material outlet of a vibrating feeder 9; the outlet of the rod mill 14 leads to a magnetic separator 10; The slag processing method comprises the following steps: S1, converter slag enters the tilting screening device 7 through the conveying equipment; the large pieces of material in the slag are separated out, so that the large pieces of slag enter the repeated steelmaking link, and the screened slag falls into the storage bin 8 for temporary storage; the vibrating feeder 9 at the bottom of the storage bin 1 sends the slag to the magnetic separator 10 to separate the magnetic and non-magnetic materials, and the separated fine material is sent to the storage bin 2 12 by the vibrating feeder 2 11; S2. The coarse material from the vibrating feeder 9 enters the buffer bin 13 and then enters the rod mill 14 for grinding; the material ground by the rod mill 14 is sent to the magnetic separator 10, and the material separated by the magnetic separator 10 is recycled according to the above process to achieve efficient utilization of steel slag.

[0045] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure rather than to limit it. Although the present disclosure has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present disclosure may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present disclosure, which should be included in the scope of the claims of the present disclosure.

Claims

1. A rod mill for grinding steel slag using grinding rods, characterized in that: include: Body (1); A grinding cylinder (2), the grinding cylinder (2) being rotatably disposed on the machine body (1), the grinding cylinder (2) having an abrasive space (201) inside, the abrasive space (201) being used to accommodate the grinding rod and the steel slag, the abrasive space (201) having a material inlet (202) and a material outlet (203); A rotating material guide member (3), the rotating material guide member (3) is rotatably arranged in the abrasive space (201) and is located on one side of the material outlet (203). The rotating material guide member (3) has a first material guide slope (301). The first material guide slope (301) is configured to drive the steel slag to move in a direction toward the material outlet (203) after being driven by the rotating material guide member (3) to rotate in a forward direction, and to drive the steel slag to move in a direction away from the material outlet (203) after being driven by the rotating material guide member (3) to rotate in a reverse direction.

2. A rod mill according to claim 1, characterized in that: The abrasive space (201) is a cylindrical space, the axis direction of the abrasive space (201) is horizontal, the material inlet (202) is located at one end of the abrasive space (201), the material outlet (203) is located on the cylinder wall away from the end of the material inlet (202), and the rotation axis of the rotating material guide member (3) coincides with the axis of the abrasive space (201).

3. A rod mill according to claim 1, characterized in that: The material outlets (203) are provided in a plurality and are arranged circumferentially on the outer wall of the grinding cylinder (2), and further include: A baffle (4), wherein the baffle (4) is rotatably disposed on an inner wall of the abrasive space (201) at one end away from the material inlet (202), the rotatable material guide (3) is transversely slidably disposed on the baffle (4), the rotatable material guide (3) is located on a side of the material outlet (203) close to the axial direction of the abrasive space (201), the baffle (4) is annular, and the baffle (4) is configured to block or unblock the material outlet (203) after transverse sliding.

4. A rod mill according to claim 3, characterized in that: The outer wall of the blocking member (4) has a material guide notch (401), the inner diameter of the material guide notch (401) gradually decreases from the direction close to the material inlet (202) to the direction away from the material inlet (202), the material guide notch (401) has a material guide inlet (402), a material guide outlet (403) and a guide slope (404), the material guide inlet (402) faces the material inlet (202), the material guide outlet (403) faces the material outlet (203), and the guide slope (404) is used to guide the ground steel slag from the material guide inlet (402) to the material guide outlet (403).

5. The rod mill according to claim 1, characterized in that: The cylindrical wall of the abrasive space (201) has a plurality of ridges (204), and the plurality of ridges (204) are arranged circumferentially inside the abrasive space (201), with auxiliary grinding grooves (205) formed between adjacent ridges (204).

6. The rod mill according to claim 5, wherein two ends of the auxiliary grinding groove (205) are respectively connected to the material inlet (202) and the material outlet (203), characterized in that: The auxiliary grinding groove (205) has a lifting slope (206) at one end close to the material inlet (202); after the grinding rod moves laterally in the auxiliary grinding groove (205), one end is used to slide against the lifting slope (206); after sliding on the lifting slope (206), the grinding rod is inclined relative to the length direction of the auxiliary grinding groove (205), and together with the bottom wall of the auxiliary grinding groove (205), it forms a cleaning ramp (207); the cleaning ramp (207) is used to guide the processed slag to the material outlet (203).

7. A rod mill according to claim 4, characterized in that: Also includes: A push rod member (5), the push rod member (5) being laterally slidably arranged on the rotating shaft of the rotating material guide member (3), the push rod member (5) comprising a push rod portion (501) and a notch reset portion (502), a push rod channel (503) being formed between the push rod portion (501) and the inner wall of the abrasive space (201), the push rod channel (503) being used to accommodate an end of the grinding rod away from the material inlet (202), and a reset channel (504) being formed between the notch reset portion (502) and the inner wall of the abrasive space (201); the push rod portion (501) being arc-shaped, the width of the push rod channel (503) gradually increasing from one end to the other end, and the minimum width being greater than the diameter of the push rod portion (501).

8. A rod mill according to claim 7, characterized in that: The notch reset portion (502) has a reset auxiliary inclined surface (503), the blocking member (4) has a receiving groove (405), and the push rod member (5) is configured to enter or leave the receiving groove (405) after being driven by the rotating material guide member (3) to slide horizontally.

9. The rod mill according to claim 1, characterized in that: Also includes: A discharge hopper (6), the discharge hopper (6) being arranged on the grinding cylinder (2), the discharge hopper (6) having a discharge channel (601), the discharge channel (601) having a main outlet (602), and the plurality of material outlets (203) being connected to the outside through the discharge channel (601) and the main outlet (602).

10. A steel slag treatment process, comprising: using a rod mill according to any one of claims 1 to 9 to perform steel slag rod grinding treatment, characterized in that: A slag processing system is used for slag processing, including a first line and a second line; The first circuit comprises a tilting screening device (7) connected in sequence to a material source, a first storage bin (8), a first vibrating feeder (9), a first magnetic separator (10), a second vibrating feeder (11) and a second storage bin (12); The second circuit comprises a buffer bin 1 (13) and a rod mill 1 (14) which are sequentially connected to the coarse material outlet of a vibrating feeder 1 (9); the outlet of the rod mill 1 (14) leads to the magnetic separator 1 (10); The slag processing method comprises the following steps: S1, converter slag enters the tilting screening device (7) through the conveying equipment; the large pieces of material in the slag are separated out, so that the large pieces of slag enter the repeated steelmaking process, and the screened slag falls into the first storage bin (8) for temporary storage; the vibrating feeder (9) at the bottom of the first storage bin sends the slag to the first magnetic separator (10) to separate the magnetic and non-magnetic materials, and the separated fine material is sent to the second storage bin (12) by the vibrating feeder (11); S2. The coarse material from the vibrating feeder (9) enters the buffer bin (13) and then enters the rod mill (14) for grinding. The material ground by the rod mill (14) is sent to the magnetic separator (10). The material separated by the magnetic separator (10) is then recycled according to the above process to achieve efficient utilization of steel slag.

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