Steel slag magnetic separation fine powder production line

Abstract

The utility model discloses a steel slag magnetic separation fine powder production line which comprises a machine frame, a steel slag bin, a first vibrating screen, a second vibrating screen, a rod mill, a third vibrating screen and a magnetic separation vibrating machine, and the steel slag bin, the first vibrating screen, the second vibrating screen, the rod mill, the third vibrating screen and the magnetic separation vibrating machine are sequentially arranged. The second vibrating screen is connected with the rod mill through a second conveying mechanism, the rod mill is connected with the third vibrating screen through a third conveying mechanism, the third vibrating screen is connected with the magnetic separation vibrating machine through a fourth conveying mechanism, and the fourth conveying mechanism is connected with the second vibrating screen through a sixth conveying mechanism. According to the utility model, a three-stage screening mode consisting of the first, second and third vibrating screens is adopted, and all the vibrating screens are formed by connecting a plurality of rod type screens in series, so that the screening efficiency and precision are ensured, and a three-stage magnetic separation mode consisting of the iron remover, the magnetic separation bin and the magnetic separation vibrating machine is adopted, so that the purity of steel slag is ensured, and each device is better protected.

Description

TECHNICAL FIELD

[0001] The utility model relates to steel smelting machinery, in particular to a kind of steel slag magnetic separation fine powder production line. BACKGROUND

[0002] The steel slag generated in the process of steel smelting is solid waste, and its direct burial will cause serious environmental pollution. In order to achieve green environmental protection of steel smelting, comprehensively and reasonably utilize the solid waste, and improve the comprehensive benefit of enterprises, a method for automatically producing the magnetic separation fine powder of the extracted iron-containing material of steel slag is developed.

[0003] At present, the steel slag magnetic separation fine powder production line has not been fully popularized in China and is in the development period. The operator performs remote operation in the main control room, and the actual situation in the rod mill is not displayed in real time. The actual amount of steel slag in the rod mill is controlled by the amount of addition, and the amount of steel slag in each key process is not measured. These factors cause unstable quality and prone to quality and equipment accidents. UTILITY MODEL CONTENT

[0004] The utility model solves the technical problem of the prior art and provides a steel slag magnetic separation fine powder production line with reasonable design and full-process automatic control.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A steel slag magnetic separation fine powder production line, characterized in that it comprises a rack and a steel slag bin, a first vibrating screen, a second vibrating screen, a rod mill, a third vibrating screen and a magnetic separation vibrating machine arranged in sequence. The steel slag bin is provided with a feeding port at the top, and a slag discharge door is installed at the bottom. The first vibrating screen is arranged below the steel slag bin. The first vibrating screen and the second vibrating screen are connected by a first conveying mechanism. The second vibrating screen and the rod mill are connected by a second conveying mechanism. The rod mill and the third vibrating screen are connected by a third conveying mechanism. The third vibrating screen and the magnetic separation vibrating machine are connected by a fourth conveying mechanism. The fourth conveying mechanism is connected with the second vibrating screen through a sixth conveying mechanism. The third vibrating screen is connected with the second conveying mechanism through a seventh conveying mechanism.

[0007] The first, second and third vibrating screens are all steel rod vibrating screens. The steel rod vibrating screen is composed of a plurality of rod screens connected in series. The rod screen comprises a vibrating frame and a plurality of layers of steel rods horizontally inserted into the vibrating frame. The vibrating frame is provided with a feeding port at the top and a discharging port at the bottom. The vibrating frame is installed on the rack by an elastic mechanism. A vibrating motor is installed on the outer wall of the vibrating frame. The adjacent steel rods of each layer of rod screens have equal spacing. The spacing of the steel rods of the first vibrating screen is greater than that of the second vibrating screen. The spacing of the steel rods of the second vibrating screen is equal to that of the third vibrating screen.

[0008] The rod mill comprises a base and a horizontally arranged rotary cylinder body, end covers are arranged at two ends of the rotary cylinder body, a hollow rotating shaft is arranged at the center of the end cover, the hollow rotating shaft is installed on the base through a bearing, the hollow rotating shaft at one end of the rotary cylinder body is communicated with a feeding hopper arranged on the base, a steel slag guide outlet is arranged on a lining plate at the other end of the rotary cylinder body, a discharging port is arranged on the rotary cylinder body at the steel slag guide outlet, a receiving hopper connected with a third conveying mechanism is installed below the discharging port, a circle of lining plates is fixed on the inner wall of the rotary cylinder body, and a plurality of wear-resistant round steel rods with a diameter of 140 mm are arranged in the rotary cylinder body.

[0009] The magnetic separation vibrating machine is provided with a feeding port at the top and a discharging port at the bottom, a magnetic separation bin is installed at the feeding port, a magnetic separation roller is arranged below the discharging port, a partition plate for separating the part with high iron content from the part with low iron content is arranged below the center of the magnetic separation roller, a magnetic separation fine powder bin and a tailing bin are arranged on the two sides of the partition plate respectively, and the partition plate is connected with the magnetic separation fine powder bin and the tailing bin through an eighth conveying mechanism respectively.

[0010] The first conveying mechanism, the second conveying mechanism, the third conveying mechanism, the fourth conveying mechanism, the fifth conveying mechanism, the sixth conveying mechanism, the seventh conveying mechanism and the eighth conveying mechanism comprise a conveying belt and a supporting roller for supporting the conveying belt, the supporting roller is installed on a rack, and a roller scale for on-line real-time weighing to monitor the real-time production condition of each key process is installed on the supporting roller at the output end of the conveying belt.

[0011] The technical problems solved by the present application can also be solved by the following technical solutions, the lining plate is provided with a lining plate body, the back surface of the lining plate body is provided with a mounting surface matched with the inner wall of the rotary cylinder body, the mounting surface is an arc surface with the same curvature as the rotary cylinder body, the front surface of the lining plate body is provided with a wave-shaped surface, the trough of the wave-shaped surface is provided with a chute, the peak of the wave-shaped surface of one row of lining plates is provided with a groove for facilitating the pushing of the material and the self-peristalsis of the steel slag, the axis of the groove is arranged to intersect the peak, the groove is arranged in a long oval shape, the steel slag guide outlet is a plurality of long strip-shaped holes for filtering the steel slag, and the width of the long strip-shaped hole is 40 mm, so that the steel slag with a size less than 40 mm can flow out.

[0012] The technical problems solved by the present application can also be solved by the following technical solutions, the magnetic separation bin is provided with a plurality of layers of horizontally arranged magnetic screens, the side edges of the magnetic screens are fixed on the inner wall of the magnetic separation bin, and the mesh holes of adjacent magnetic screens are arranged in a staggered manner.

[0013] The technical problems solved by the present application can also be solved by the following technical solutions, an infrared height measuring instrument for measuring the height of the steel slag in the bin in real time is installed at the feeding port of the steel slag bin.

[0014] The technical problems that the utility model wants to solve can also be realized through the following technical scheme, infrared probe for real-time display of running condition in the rod mill and state of steel slag and steel rod is installed at the rod mill entrance.

[0015] The technical problems that the utility model wants to solve can also be realized through the following technical scheme, control center for controlling the height infrared height measuring instrument is installed on the rack, and the roller way scale, infrared probe, first conveying mechanism, second conveying mechanism, third conveying mechanism, fourth conveying mechanism, fifth conveying mechanism, sixth conveying mechanism, seventh conveying mechanism and eighth conveying mechanism are connected with the control center.

[0016] Compared with the prior art, the utility model has the following technical effects:

[0017] First, through the three-stage screening mode composed of the first, second and third vibrating screens, the screening effect of the steel slag is improved, all the vibrating screens are connected in series by multiple rod screens, ensuring high efficiency and precision of screening,

[0018] Second, through the three-stage magnetic separation mode composed of the iron removal machine, the magnetic separation bin and the magnetic separation vibrating machine, the purity of the steel slag is ensured, and each device is better protected;

[0019] Third, by providing high-strength wear-resistant round steel rods with a diameter of 140mm in the rod mill, the grinding effect is improved and the consumption of round steel is reduced;

[0020] Fourth, by providing roller way scales in each conveying mechanism, the production of each key process is weighed online in real time, the real-time production status of each key process is monitored in real time, especially the amount of steel slag in the rod mill is ensured, and the normal operation of the rod mill is ensured;

[0021] Fifth, by providing an infrared height measuring instrument installed in the steel slag bin, the height of the steel slag in the bin is measured in real time to control the loading time and amount of the steel slag; an infrared probe is provided at the entrance of the rod mill to display the running condition in the rod mill and the state of the steel slag and steel rod in real time. DRAWINGS

[0022] Figure 1 The structure diagram of the steel slag magnetic separation fine powder production line and the production method of the utility model;

[0023] Figure 2 The arrangement diagram of the lining plate in the rotary cylinder;

[0024] Figure 3 The D-D direction development diagram of Figure 2

[0025] Figure 4 The structure diagram of the lining plate;

[0026] Figure 5 ​A-A sectional view of Figure 4 A-A sectional view of

[0027] Figure 6 Structure diagram of steel slag discharge port.

[0028] In the figure: 1-second vibrating screen, 2-roller scale, 3-magnetic separator, 4-first vibrating screen, 5-steel slag bin, 6-steel slag, 7-infrared height gauge, 8-bin door, 9-fifth conveying mechanism, 10-mechanical crushing plant, 11-third vibrating screen, 12-fourth conveying mechanism, 13-tail slag bin, 14-magnetic separation bin, 15-magnetic separation vibrating machine, 16-magnetic separation roller, 17-separation plate, 18-rod mill, 19-fine powder bin, 20-second conveying mechanism, 21-sixth conveying mechanism, 22-seventh conveying mechanism, 23-eighth conveying mechanism, 24-third conveying mechanism, 25-rotary cylinder, 26-liner, 27-groove, 28-wavy surface, 29-mounting surface, 30-steel slag discharge port. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0030] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0031] Referring to Figures 1-5 A steel slag magnetic separation fine powder production line, comprising a rack and a steel slag bin 5, a first vibrating screen 4, a second vibrating screen 1, a rod mill 18, a third vibrating screen 11 and a magnetic separation vibrating machine 15 arranged in sequence, the top of the steel slag bin 5 is provided with a feeding port, the bottom of the steel slag bin 5 is provided with a slag discharge bin door 8, the first vibrating screen 4 is arranged below the steel slag bin 5, the first vibrating screen 4 and the second vibrating screen 2 are connected through a first conveying mechanism 2, the second vibrating screen 1 and the rod mill 18 are connected through a second conveying mechanism 20, the rod mill 18 and the third vibrating screen 11 are connected through a third conveying mechanism 24, the third vibrating screen 11 and the magnetic separation vibrating machine 15 are connected through a fourth conveying mechanism 12, the fourth conveying mechanism 12 is connected with the second vibrating screen 1 through a sixth conveying mechanism 21, and the third vibrating screen 11 is connected with the second conveying mechanism 20 through a seventh conveying mechanism 22;

[0032] The first, second and third vibrating screens are steel rod vibrating screens, the steel rod vibrating screen is formed by connecting a plurality of rod screens in series, the rod screen comprises a vibrating frame and a plurality of layers of steel rods horizontally inserted into the vibrating frame, the top of the vibrating frame is provided with a feeding port, the bottom of the vibrating frame is provided with a discharging port, a falling gap communicating with the feeding port and the discharging port is arranged between adjacent steel rods, the vibrating frame is installed on a rack through an elastic mechanism, a vibrating motor is installed on the outer wall of the vibrating frame, the spacing between adjacent steel rods of each layer of rod screens is equal, the spacing between adjacent steel rods of the first vibrating screen is greater than the spacing between adjacent steel rods of the second vibrating screen, the spacing between adjacent steel rods of the second vibrating screen is equal to the spacing between adjacent steel rods of the third vibrating screen, the spacing between adjacent steel rods of the first vibrating screen is 300 mm, and the spacing between adjacent steel rods of the second vibrating screen and the third vibrating screen is 10 mm.

[0033] The rod mill comprises a base and a horizontally arranged rotary cylinder 25, the rotary cylinder 25 is provided with end covers at two ends, the center of each end cover is provided with a hollow rotating shaft, the hollow rotating shaft is installed on the base through a bearing, the hollow rotating shaft at one end of the rotary cylinder is communicated with a feeding hopper arranged on the base, a steel slag guide outlet 30 is arranged on the lining plate at the other end of the rotary cylinder, a discharging port is arranged on the rotary cylinder at the steel slag guide outlet 30, a receiving hopper connected with the third conveying mechanism is installed below the discharging port, a circle of lining plates is fixed on the inner wall of the rotary cylinder, and a plurality of wear-resistant round steel rods with a diameter of 140 mm are arranged in the rotary cylinder.

[0034] A magnetic selection bin 14 is installed at the feeding port of the magnetic selection vibrating machine 15, a plurality of layers of horizontally arranged magnetic screens are installed in the magnetic selection bin 14, the side edges of the magnetic screens are fixed on the inner wall of the magnetic selection bin, the mesh holes of adjacent magnetic screens are arranged in a staggered manner, and the mesh hole diameter of the magnetic screens is 10 mm.

[0035] A magnetic selection roller 16 is arranged below the discharging port of the magnetic selection vibrating machine 15, a separation plate 17 for separating the part with high iron content from the part with low iron content is arranged below the center of the magnetic selection roller 16, a magnetic selection fine powder bin 19 and a tail slag bin 13 are arranged on the two sides of the separation plate 17 respectively, and the separation plate 17 is connected with the magnetic selection fine powder bin 19 and the tail slag bin 13 through an eighth conveying mechanism 23.

[0036] The lining plate 26 is provided with a lining plate body, the back surface of the lining plate body is provided with a mounting surface 29 matched with the inner wall of the rotary cylinder, the mounting surface 29 is an arc surface with the same curvature as the rotary cylinder, the front surface of the lining plate body is provided with a wave-shaped surface 28, the trough of the wave-shaped surface 28 is arranged as a chute, a groove 27 for facilitating the pushing of materials to make the steel slag self-peristalsis is arranged at the peak of the wave-shaped surface 28 of one row of lining plates 26, the axis of the groove 27 is arranged in cross with the peak, and the steel slag guide outlet is a plurality of long strip-shaped holes for filtering the steel slag.

[0037] The first conveying mechanism 2, the second conveying mechanism 20, the third conveying mechanism 24, the fourth conveying mechanism 12, the fifth conveying mechanism 9, the sixth conveying mechanism 21, the seventh conveying mechanism 22 and the eighth conveying mechanism 23 comprise conveying belts and supporting rollers for supporting the conveying belts, the supporting rollers are installed on the frame, and roller scales for weighing in real time are installed on the supporting rollers at the output ends of the conveying belts to monitor the real-time production conditions of key processes; the conveying mechanisms can be arranged horizontally or obliquely according to conveying directions or use requirements; and the devices are all installed on the frame, and the main installation mode is fixed installation.

[0038] An infrared height measuring instrument 7 for measuring the height of the steel slag in the steel slag bin 5 in real time is installed at the feeding port of the steel slag bin.

[0039] An infrared probe for displaying the running conditions in the rod mill and the states of the steel slag and the steel rod in real time is installed at the inlet of the rod mill 18.

[0040] A control center for controlling the infrared height measuring instrument is installed on the frame, and the roller scales, the infrared probe, the first conveying mechanism, the second conveying mechanism, the third conveying mechanism, the fourth conveying mechanism, the fifth conveying mechanism, the sixth conveying mechanism, the seventh conveying mechanism and the eighth conveying mechanism are all connected with the control center.

[0041] The working process of the steel slag magnetic separation and fine powder production line is as follows,

[0042] (1) The steel slag bin 5 can store a maximum of 20 tons of steel slag 6, and a slag discharge door 8 is arranged below the steel slag bin 5; the slag discharge door 8 is opened after receiving a slag discharge instruction, and the steel slag 6 flows out of the steel slag bin to the first vibrating screen 4; an infrared height measuring instrument 7 for material storage is arranged above the steel slag bin, and the height of the material in the bin is fed back to the control center and the main operating room 10 in real time; when the height of the material detected by the infrared height measuring instrument 7 decreases to 1 / 5 of the position of the bin, the control center sends a notification of feeding.

[0043] (2) After receiving a working instruction, the first vibrating screen 4 vibrates, which is a steel rod vibrating screen; the minimum spacing of the steel rods of the lowermost layer of the steel rod screen is 300 mm; the steel slag 9 larger than 300 mm is conveyed to the mechanical crushing plant 10 by the fifth conveying mechanism 9 to be mechanically crushed; the steel slag smaller than 300 mm is conveyed to the second vibrating screen 1 by the first conveying mechanism 2 to be screened; there is an iron separator 3 on the conveying belt to remove the steel in the steel slag to prevent damage to the equipment in the subsequent process; the maximum adsorption capacity of the iron separator is 2 tons; and the roller scale 2, i.e., the roller weighing instrument, is arranged behind the iron separator to weigh the steel slag after the iron removal and transmit the data to the control center.

[0044] (3) The steel slag with particle size less than 10 mm is screened by the second vibrating screen 1 and is transported to the fourth conveying mechanism 12 in front of the second vibrating screen 14 by the sixth conveying mechanism 22. The steel slag with particle size greater than 10 mm is transported to the rod mill 18 by the second conveying mechanism 20 for grinding. A roller scale is arranged in front of the grinding mill to weigh the steel slag before entering the rod mill and transmit the data to the control center.

[0045] The main parameters of the rod mill are as follows: the length of the drum is 4500 mm, the inner diameter is 2700 mm, the rotating speed is 0.2-18 r / min, the power of the main motor is 500 Kw, the loading amount of the steel rod is 10-30 tons, the loading amount of the steel slag is 5-20 tons, the grinding capacity is 40-60 tons / h, the specification of the steel rod is Φ140*4500 mm, and the material of the steel rod is high-strength wear-resistant steel. The roller scale is arranged in front of and behind the rod mill, and the control center controls the amount of the steel slag in the rod mill to ensure that the amount of the steel slag is within 5-20 tons. When the amount of the steel slag exceeds the weight, the belt 20 and the equipment in front of the belt 20 stop running. When the amount of the steel slag is less than 5 tons, the rod mill 18 is closed.

[0046] (4) The ground steel slag is transported to the third vibrating screen 11 by the third conveying mechanism for screening. The steel slag with particle size greater than 10 mm is transported to the second conveying mechanism 20 in front of the rod mill by the seventh conveying mechanism 22 and is re-ground in the rod mill. The steel slag with particle size less than 10 mm is transported to the magnetic separation bin 14 by the fourth conveying mechanism.

[0047] (5) The steel slag in the magnetic separation bin 14 is uniformly dropped on the rotating magnetic separation roller 16 by the magnetic separation vibrating machine 15, is separated into the part with high iron content and the part with low iron content on the magnetic separation roller, is dropped on the different eighth conveying mechanisms 23 by the separating plate 17 respectively, is weighed, and then is transported to the magnetic separation fine powder bin 19 and the tailing bin 13 respectively.

[0048] All the equipment operation in the utility model is controlled by the computer of the control center. The equipment of each process and the abnormal process parameters are provided with an alarm warning. Each process is provided with video monitoring, and the working picture is displayed in the main control room monitoring picture in real time.

[0049] The working process of the utility model is that the operator remotely operates in the control center, the degree of full-automatic operation is achieved, the actual condition in the rod mill can be displayed in real time, the stability of the quality can be ensured, and the quality and equipment accidents can be avoided.

[0050] The above merely describes the preferable specific implementation of the utility model, but the protection scope of the utility model is not limited to this. Any skilled person in the art can make equivalent substitution or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A steel slag magnetic separation fine production line, characterized in that, The steel slag warehouse top is provided with a feeding port, and the steel slag warehouse bottom is provided with a slag discharge door; the first vibrating screen is arranged below the steel slag warehouse; the first vibrating screen and the second vibrating screen are connected through a first conveying mechanism; the second vibrating screen and the rod mill are connected through a second conveying mechanism; the rod mill and the third vibrating screen are connected through a third conveying mechanism; the third vibrating screen and the magnetic separation vibrating machine are connected through a fourth conveying mechanism; the fourth conveying mechanism is connected with the second vibrating screen through a sixth conveying mechanism; the third vibrating screen is connected with the second conveying mechanism through a seventh conveying mechanism; The first, second and third vibrating screens are all steel rod vibrating screens, which are vertically connected in series by a plurality of rod screens; each rod screen comprises a vibrating frame and a plurality of layers of steel rods horizontally inserted into the vibrating frame; the vibrating frame top is provided with a feeding port, and the vibrating frame bottom is provided with a discharging port; the vibrating frame is installed on the rack through an elastic mechanism; a vibrating motor is installed on the vibrating frame outer wall; the adjacent steel rods of each layer of rod screens have equal spacing; the steel rod spacing of the first vibrating screen is greater than that of the second vibrating screen; the steel rod spacing of the second vibrating screen is equal to that of the third vibrating screen; The rod mill comprises a base and a horizontally arranged rotary cylinder; the rotary cylinder two ends are provided with end covers; the end cover center is provided with a hollow rotating shaft; the hollow rotating shaft is installed on the base through a bearing; the rotary cylinder one end hollow rotating shaft is communicated with the feeding hopper arranged on the base; the rotary cylinder other end lining plate is provided with a steel slag guide outlet; the rotary cylinder at the steel slag guide outlet is provided with a discharging port; the discharging port below is provided with a receiving hopper connected with the third conveying mechanism; a circle of lining plates is fixed on the rotary cylinder inner wall; a plurality of wear-resistant round steel rods are arranged in the rotary cylinder. The magnetic separation vibrating machine top is provided with a feeding port, and the magnetic separation vibrating machine bottom is provided with a discharging port; the feeding port is provided with a magnetic separation material warehouse; the discharging port below is provided with a magnetic separation roller; the magnetic separation roller center below is provided with a separation plate for separating the high iron content part and the low iron content part; the separation plate two sides are respectively provided with a magnetic separation fine powder material warehouse and a tail slag material warehouse; the separation plate is connected with the magnetic separation fine powder material warehouse and the tail slag material warehouse through an eighth conveying mechanism. The first conveying mechanism, the second conveying mechanism, the third conveying mechanism, the fourth conveying mechanism, the fifth conveying mechanism, the sixth conveying mechanism, the seventh conveying mechanism and the eighth conveying mechanism comprise a conveying belt and a supporting roller for supporting the conveying belt; the supporting roller is installed on the rack; the supporting roller output end is provided with a roller scale for online real-time weighing to monitor the real-time production status of each key process.

2. A steel slag magnetic separation fine powder production line according to claim 1, characterized in that, The lining plate is provided with a lining plate body; the lining plate body back is provided with a mounting surface matched with the rotary cylinder inner wall; the mounting surface is an arc surface with the same curvature as the rotary cylinder; the lining plate body front is provided with a wave-shaped surface; the trough of the wave-shaped surface is provided with a groove for facilitating pushing the material to make the steel slag self-peristalsis; the groove axis intersects with the wave crest.

3. A steel slag magnetic separation fine powder production line according to claim 2, characterized in that, The groove is long-elliptical; the steel slag guide outlet is a plurality of long strip-shaped holes for filtering the steel slag.

4. The steel slag magnetic separation and superfine powder production line according to claim 1, characterized in that, The magnetic selection bin is internally provided with several layers of horizontally arranged magnetic screens, the side edges of the magnetic screens are fixed on the inner wall of the magnetic selection bin, and the mesh holes of adjacent magnetic screens are staggered.

5. The steel slag magnetic separation and concentrate production line according to claim 1, characterized in that, The distance between adjacent steel rods of the first vibrating screen is 300mm, and the distance between adjacent steel rods of the second vibrating screen and the third vibrating screen is 10mm.

6. The steel slag magnetic separation and superfine powder production line according to claim 1, characterized in that, An infrared height measuring instrument for measuring the height of the steel slag in the bin in real time is installed at the inlet of the steel slag bin.

7. The steel slag magnetic separation and superfine powder production line according to claim 1, characterized in that, An infrared probe for displaying the running condition of the rod mill and the state of the steel slag and the steel rod in real time is installed at the inlet of the rod mill.

8. The steel slag magnetic separation and superfine powder production line according to claim 1, characterized in that, A control center for controlling the infrared height measuring instrument is installed on the frame, and the roller bed scale, the infrared probe, the first conveying mechanism, the second conveying mechanism, the third conveying mechanism, the fourth conveying mechanism, the fifth conveying mechanism, the sixth conveying mechanism, the seventh conveying mechanism and the eighth conveying mechanism are connected with the control center.

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