Special superfine tube mill for gelling waste

Abstract

This invention relates to the field of tube mill technology, and more particularly to an ultrafine tube mill specifically for cementitious waste. The mill includes a body, a mounting frame fixedly connected to the feed end of the body, a waste pretreatment cylinder fixedly connected to the mounting frame, a ferromagnetic metal removal component rotatably connected to the inner wall of the waste pretreatment cylinder, a metal collection seat fixedly connected inside the waste pretreatment cylinder, a discharge pipe fixedly connected to the bottom end of the metal collection seat, a receiving dustproof component rotatably connected to the inner wall of the bottom end of the discharge pipe, and a shaking component rotatably connected inside the waste pretreatment cylinder. By installing an electromagnetic adsorption tube inside the waste pretreatment cylinder, and simultaneously rotating the arc-shaped scraper inside the metal collection seat driven by a motor, the electromagnetic adsorption tube can rotate on its own axis. This eliminates the need for manual cleaning of iron impurities, effectively preventing ferromagnetic metal from entering the mill and causing impact wear on core components such as liners and partition plates, thus extending the service life of the equipment.

Description

Technical Field

[0001] This invention relates to the field of tube mill technology, and in particular to an ultrafine tube mill specifically for cementitious waste. Background Technology

[0002] The ultrafine tube mill is a high-efficiency ultrafine grinding equipment with a large length-to-diameter ratio and a multi-compartment structure. It uses the rotation of the cylinder to drive the grinding media to impact, grind and peel the material. It can grind materials with a feed size of ≤25mm to the micron level. It has the characteristics of large crushing ratio, easy adjustment of particle size distribution, dry and wet use, low energy consumption and strong adaptability. It is widely used in the processing of fine powders in industries such as cement, metallurgy, chemical industry and power.

[0003] The prior art publication number CN108325635A provides a tube mill, which can realize the adjustment of the space of each chamber; and prevent the material and grinding media from losing their impact crushing effect due to centrifugal motion during the high-speed operation of the cylinder.

[0004] In the processing of gel waste, existing technologies often encounter problems. Since gel waste mainly originates from metallurgical steel slag, ore slag, fly ash, and construction solid waste, it may contain ferromagnetic metal impurities such as elemental iron, iron blocks, and steel rebar fragments during the smelting, production, crushing, transportation, and storage processes. Existing technologies do not facilitate the separation of these impurities during the feeding process. Consequently, when ferromagnetic metals enter the ultrafine tube mill, they can cause severe impact and scratching wear on the liner plates and partition plates, accelerating component damage and shortening the equipment's service life.

[0005] In summary, the existing technology lacks a technique for separating ferromagnetic metals from waste materials in tube mills. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of the prior art by proposing a special ultrafine tube mill for cementitious waste.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a special ultrafine tube mill for cementitious waste, comprising a machine body, an installation frame fixedly connected to the feed end of the machine body, a waste pretreatment cylinder fixedly connected to the installation frame, a ferromagnetic metal removal component rotatably connected to the inner wall of the waste pretreatment cylinder, a metal collection seat fixedly connected to the inside of the waste pretreatment cylinder, a discharge pipe fixedly connected to the bottom end of the metal collection seat, a receiving dustproof component rotatably connected to the inner wall of the bottom end of the discharge pipe, and a shaking component rotatably connected to the inside of the waste pretreatment cylinder.

[0008] Preferably, a discharge pipe is fixedly connected through one side of the waste pretreatment cylinder near the machine body, and the other end of the discharge pipe extends into the input end of the machine body. A feed pipe is fixedly connected through the other side of the waste pretreatment cylinder, and the waste pretreatment cylinder is arranged with an inclined structure.

[0009] Preferably, the ferromagnetic metal removal assembly includes an electromagnetic adsorption tube, which is rotatably connected to the inner wall of the waste pretreatment cylinder, and an annular rack is fixedly connected to the inner side of one end of the electromagnetic adsorption tube.

[0010] Preferably, the top opening of the metal collection seat is arranged with one high and one low structure. The higher side of the top of the metal collection seat is in sliding contact with the inner wall of the electromagnetic adsorption tube. A rotating shaft is rotatably connected through the inner wall of the metal collection seat. Multiple arc-shaped scrapers are fixedly connected to the outer wall of the rotating shaft in a ring structure. The arc-shaped scrapers are in sliding contact with the inner wall of the electromagnetic adsorption tube. A transmission wheel one and a transmission wheel two are fixedly connected to the left and right ends of the rotating shaft, respectively. The transmission wheel two is meshed with a ring rack for transmission. One end of the rotating shaft extends through the inner wall of the waste pretreatment cylinder to the outside and is fixedly connected to a motor. The motor is fixedly connected to the outer wall of the waste pretreatment cylinder.

[0011] Preferably, one end of the discharge pipe extends through the inner wall of the waste pretreatment cylinder to the outside, and a spiral conveying rod is rotatably connected through the inner wall of the discharge pipe. A toothed disc is fixedly connected to the outer end of the spiral conveying rod, and the toothed disc is meshed with a transmission wheel for transmission.

[0012] Preferably, the material receiving dustproof assembly includes a dustproof cover, the middle of which is slidably connected to the bottom end of the discharge pipe, a material receiving seat is movably inserted below the dustproof cover, a connecting rod is rotatably connected to one side of the top of the dustproof cover, a rotating rod is rotatably connected to the other end of the connecting rod, and a valve stem is fixedly connected to the other end of the rotating rod, the valve stem being rotatably connected to the bottom end of the discharge pipe.

[0013] Preferably, a valve plate is fixedly connected to one end of the valve stem inside the discharge pipe, a worm gear is fixedly connected to one end of the valve stem near the rotating rod, a worm is engaged with the lower side of the worm gear, the worm is rotatably connected to the outer wall of the discharge pipe, a contact rod is fixedly connected to the other end of the valve stem, and stops are fixedly connected to both sides of the bottom end of the discharge pipe near the contact rod, with the outer wall of the contact rod in movable contact with the stops.

[0014] Preferably, the material shaking assembly includes an L-shaped rod, one end of which is rotatably connected to the inner wall of the waste pretreatment cylinder, and an adjusting wheel is fixedly connected to one end of the L-shaped rod. The adjusting wheel is meshed with a gear plate for transmission. A movable frame is slidably fitted to the other end of the L-shaped rod. A sliding sleeve is fixedly connected to one side of the movable frame. A limit frame is slidably fitted to the inner wall of the top of the sliding sleeve. The other end of the limit frame is fixedly connected to the inner wall of the waste pretreatment cylinder.

[0015] Preferably, a conical shaking disc is rotatably connected through the inner wall of the bottom end of the sliding sleeve, a gear is fixedly connected to the top of the conical shaking disc via a universal joint, and a rack is fixedly connected to the bottom end of the limiting frame, with the gear and rack meshing for transmission.

[0016] Compared with the prior art, the present invention has the following beneficial effects: By installing an electromagnetic adsorption tube inside the waste pretreatment cylinder, ferromagnetic metals in the waste falling into the cylinder can be adsorbed and removed. Simultaneously, the arc-shaped scraper in the metal collection seat rotates driven by the motor, which in turn drives the electromagnetic adsorption tube to rotate. This allows the metal collection seat, in conjunction with the rotating arc-shaped scraper, to automatically scrape off the ferromagnetic metals adsorbed on the electromagnetic adsorption tube. As a result, this ultrafine tube mill for gelled waste can completely separate ferromagnetic metals, eliminating the need for manual cleaning of iron impurities. It effectively prevents ferromagnetic metals from entering the mill and causing impact wear on core components such as liners and partition plates, thus extending the service life of the equipment. By setting up a discharge pipe, ferromagnetic metal falling from the metal collection seat can be collected. As the arc-shaped scraper rotates, it can drive the spiral conveyor rod inside the discharge pipe to rotate, conveying the ferromagnetic metal. At the same time, the dust cover at the bottom of the discharge pipe can cover the receiving seat, effectively preventing dust from overflowing from the discharge port and ensuring a clean working environment. When it is necessary to remove the receiving seat, the discharge pipe can be blocked by rotating the valve plate to prevent undischarged iron impurities from falling. At the same time, it can drive the dust cover to move up automatically, eliminating the need for manual operation of the dust cover and making the removal, cleaning or replacement of the receiving seat more convenient and efficient. By installing a shaking component inside the waste pretreatment cylinder, as the waste enters through the feed pipe, the rotating screw conveyor can drive the shaking component, causing the conical shaking disc to rotate while moving up and down. This effectively shakes and disperses the falling gelled waste, avoiding problems such as uneven feeding and missed removal of ferromagnetic impurities by magnetic separation caused by waste agglomeration. This not only improves the thoroughness of subsequent ferromagnetic metal separation but also ensures uniform particle size of the material entering the mill. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an ultrafine tube mill for cementitious waste according to the present invention; Figure 2 This is a partial cross-sectional view of a special ultrafine tube mill for cementitious waste according to the present invention; Figure 3 This is a cross-sectional schematic diagram of the waste pretreatment cylinder structure of an ultrafine tube mill for cementitious waste according to the present invention; Figure 4 This is a cross-sectional schematic diagram of the ferromagnetic metal removal component of a special ultrafine tube mill for cementitious waste according to the present invention. Figure 5 This is a partial cross-sectional schematic diagram of the metal collection seat structure of an ultrafine tube mill for cementitious waste according to the present invention; Figure 6 This is a partial cross-sectional schematic diagram of the structure of the discharge pipe and other components of an ultrafine tube mill for cementitious waste according to the present invention. Figure 7 This is a partial cross-sectional schematic diagram of the material receiving and dust prevention components of an ultrafine tube mill for cementitious waste according to the present invention. Figure 8 This is a partial cross-sectional schematic diagram of the material shaking component structure of an ultrafine tube mill for cementitious waste according to the present invention.

[0018] The diagram shows: 1. Machine body; 2. Mounting frame; 3. Waste pretreatment cylinder; 4. Ferromagnetic metal removal assembly; 5. Metal collection seat; 6. Discharge pipe; 7. Material receiving and dust prevention assembly; 8. Shaking assembly; 301. Discharge pipe; 302. Feed pipe; 401. Electromagnetic adsorption pipe; 402. Ring rack; 501. Rotating shaft; 502. Arc-shaped scraper; 503. Transmission wheel one; 504. Transmission wheel two; 505. Motor; 601. Screw 602. Rotary conveyor rod; 603. Gear disc; 704. Stop block; 705. Dust cover; 706. Material receiving seat; 707. Connecting rod; 708. Rotating rod; 709. Valve stem; 700. Valve plate; 700. Worm gear; 700. Worm; 701. Contact rod; 802. L-shaped rod; 803. Adjusting wheel; 804. Movable frame; 805. Sliding sleeve; 806. Limiting frame; 807. Conical shaking disc; 808. Gear; 809. Rack. Detailed Implementation

[0019] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0020] like Figures 1-8The illustrated ultrafine tube mill for cementitious waste includes a body 1. A mounting frame 2 is fixedly connected to the feed end of the body 1. A waste pretreatment cylinder 3 is fixedly connected to the mounting frame 2. A ferromagnetic metal removal component 4 is rotatably connected to the inner wall of the waste pretreatment cylinder 3. A metal collection seat 5 is fixedly connected inside the waste pretreatment cylinder 3. A discharge pipe 6 is fixedly connected to the bottom end of the metal collection seat 5. A material receiving and dustproof component 7 is rotatably connected to the inner wall of the bottom end of the discharge pipe 6. A material shaking component 8 is rotatably connected inside the waste pretreatment cylinder 3. This tube mill is equipped with an energy-saving electric motor as the core power source. This energy-saving electric motor adopts a high-efficiency energy-saving iron core design and is equipped with an intelligent frequency conversion control system. It can automatically adjust the speed according to the load changes of waste pretreatment and grinding, effectively reducing power consumption while ensuring equipment processing efficiency.

[0021] like Figure 3 As shown, a discharge pipe 301 is fixedly connected to the side of the waste pretreatment cylinder 3 near the machine body 1, and the other end of the discharge pipe 301 extends into the input end of the machine body 1. A feed pipe 302 is fixedly connected to the other side of the waste pretreatment cylinder 3. The waste pretreatment cylinder 3 is inclined. The inclined structure of the waste pretreatment cylinder 3 faces the machine body 1. Utilizing gravity, the pretreated gelled waste can smoothly slide into the discharge pipe 301 without the need for additional power, saving energy consumption. At the same time, it ensures that the waste can fall completely into the input end of the machine body 1, avoiding waste accumulation in the pretreatment cylinder and improving pretreatment efficiency.

[0022] like Figure 4 As shown, the ferromagnetic metal removal assembly 4 includes an electromagnetic adsorption tube 401, which is rotatably connected to the inner wall of the waste pretreatment cylinder 3. An annular rack 402 is fixedly connected to the inner side of one end of the electromagnetic adsorption tube 401.

[0023] The 401 electromagnetic adsorption tube is made of high-strength stainless steel and has an internal electromagnetic coil. When energized, it generates a strong magnetic field, which can quickly and accurately adsorb ferromagnetic metals in gelled waste.

[0024] By installing an electromagnetic adsorption tube 401 inside the waste pretreatment cylinder 3, ferromagnetic metals in the waste falling into the waste pretreatment cylinder 3 can be adsorbed and removed. At the same time, the arc-shaped scraper 502 inside the metal collection seat 5 is rotated by the motor 505, which can drive the electromagnetic adsorption tube 401 to rotate. This allows the metal collection seat 5, in conjunction with the rotating arc-shaped scraper 502, to automatically scrape off the ferromagnetic metals adsorbed on the electromagnetic adsorption tube 401. As a result, this special ultrafine tube mill for coagulated waste can completely separate ferromagnetic metals, eliminating the need for manual cleaning of iron impurities. It effectively prevents ferromagnetic metals from entering the mill and causing impact wear on core components such as liners and partition plates, thus extending the service life of the equipment. like Figure 5 As shown, the top opening of the metal collection seat 5 is arranged with one high and one low structure. The higher side of the top of the metal collection seat 5 is in sliding contact with the inner wall of the electromagnetic adsorption tube 401. A rotating shaft 501 is rotatably connected through the inner wall of the metal collection seat 5. Multiple arc-shaped scraper plates 502 are fixedly connected to the outer wall of the rotating shaft 501 in an annular structure. The arc-shaped scraper plates 502 are in sliding contact with the inner wall of the electromagnetic adsorption tube 401. A transmission wheel 1 503 and a transmission wheel 2 504 are fixedly connected to the left and right ends of the rotating shaft 501, respectively. The transmission wheel 2 504 is engaged with the annular rack 402 for transmission. One end of the rotating shaft 501 extends through the inner wall of the waste pretreatment cylinder 3 to the outside and is fixedly connected to a motor 505. The motor 505 is fixedly connected to the outer wall of the waste pretreatment cylinder 3.

[0025] The 505 motor is a servo motor with adjustable speed, stable power, and low noise. The speed can be flexibly adjusted according to the amount of waste processed to adapt to different working conditions.

[0026] like Figure 6 As shown, one end of the discharge pipe 6 extends through the inner wall of the waste pretreatment cylinder 3 to the outside. A spiral conveyor rod 601 is rotatably connected through the inner wall of the discharge pipe 6. A gear disc 602 is fixedly connected to the outer end of the spiral conveyor rod 601. The gear disc 602 is meshed with the transmission wheel 503 for transmission.

[0027] like Figure 7 As shown, the material receiving dustproof assembly 7 includes a dust cover 701, which is slidably fitted through the middle of the dust cover 701 to the bottom end of the discharge pipe 6. A material receiving seat 702 is movably inserted below the dust cover 701. A connecting rod 703 is rotatably connected to one side of the top of the dust cover 701, and a rotating rod 704 is rotatably connected to the other end of the connecting rod 703. A valve stem 705 is fixedly connected to the other end of the rotating rod 704, and the valve stem 705 is rotatably connected through the bottom end of the discharge pipe 6. The dust cover 701 not only seals the opening of the material receiving seat 702 but also limits the movement of the material receiving seat 702. Rollers are provided at the bottom of the material receiving seat 702 for easy transfer.

[0028] A valve plate 706 is fixedly connected to one end of the valve stem 705 inside the discharge pipe 6. A worm gear 707 is fixedly connected to one end of the valve stem 705 near the rotating rod 704. A worm 708 is meshed and driven on the lower side of the worm gear 707. The worm 708 is rotatably connected to the outer wall of the discharge pipe 6. A contact rod 709 is fixedly connected to the other end of the valve stem 705. Stops 603 are fixedly connected to both sides of the bottom end of the discharge pipe 6 near the contact rod 709. The outer wall of the contact rod 709 is in movable contact with the stop blocks 603. The two stops 603 enable the contact rod 709 to rotate 90 degrees.

[0029] like Figure 8As shown, the material shaking assembly 8 includes an L-shaped rod 801. One end of the L-shaped rod 801 is rotatably connected to the inner wall of the waste pretreatment cylinder 3. An adjusting wheel 802 is fixedly connected to one end of the L-shaped rod 801, and the adjusting wheel 802 meshes with the gear disc 602 for transmission. A movable frame 803 is slidably fitted to the other end of the L-shaped rod 801. A sliding sleeve 804 is fixedly connected to one side of the movable frame 803. A limit frame 805 is slidably fitted to the inner wall of the top of the sliding sleeve 804. The other end of the limit frame 805 is fixedly connected to the inner wall of the waste pretreatment cylinder 3. The gear disc 602 increases the rotational speed of the adjusting wheel 802.

[0030] A conical shaking disc 806 is rotatably connected through the inner wall of the bottom end of the sliding sleeve 804. A gear 807 is fixedly connected to the top of the conical shaking disc 806 via a universal joint. A rack 808 is fixedly connected to the bottom end of the limiting frame 805. The gear 807 and the rack 808 mesh and drive each other. The conical shaking disc 806 is located below the inner opening end of the feed pipe 302.

[0031] The conical shaking disc 806 is made of wear-resistant steel plate and has a conical structure. The surface is treated with anti-sticking to prevent the gelled waste from sticking together. The conical structure facilitates the waste to spread to all sides during the shaking process, achieving full dispersal. At the same time, the dispersed waste is smoothly slid down to the bottom of the waste pretreatment cylinder 3 by gravity and flows to the electromagnetic adsorption tube 401.

[0032] Working principle: First, start the motor 505 to make the rotating shaft 501 rotate at a constant speed, which in turn drives the arc-shaped scraper 502, transmission wheel one 503, and transmission wheel two 504 to rotate synchronously; transmission wheel two 504 meshes with the ring rack 402, driving the electromagnetic adsorption tube 401 to rotate at a constant speed, and at the same time, the electromagnetic adsorption tube 401 is energized to generate a strong magnetic field, ready for ferromagnetic metal adsorption; transmission wheel one 503 meshes with the toothed disc 602, driving the spiral conveyor rod 601 to rotate at a constant speed, and at the same time, the toothed disc 602 meshes with the adjusting wheel 802, driving the shaking component 8 to start working.

[0033] The gelled waste to be ground is fed into the waste pretreatment cylinder 3 through the feed pipe 302, and the waste from the feed pipe 302 falls precisely onto the conical shaking disc 806 of the shaking component 8. At this time, the gear disc 602 drives the adjusting wheel 802 to rotate rapidly, the adjusting wheel 802 drives the L-shaped rod 801 to rotate, the L-shaped rod 801 drives the movable frame 803 to move up and down reciprocally, the movable frame 803 drives the sliding sleeve 804 to slide up and down along the limiting frame 805, and thus drives the conical shaking disc 806 to move up and down; at the same time, when the sliding sleeve 804 moves up and down, the gear 807 at the top of the conical shaking disc 806 meshes with the rack 808 at the bottom of the limiting frame 805, driving the conical shaking disc 806 to rotate at a uniform speed, so that the falling gelled waste is fully shaken and dispersed on the rotating and moving conical shaking disc 806, forming uniform fine particles, avoiding problems such as uneven feeding and magnetic separation failure to remove iron impurities caused by waste agglomeration.

[0034] When the broken-up gelled waste passes through the electromagnetic adsorption tube 401, the strong magnetic field generated by the energized electromagnetic adsorption tube 401 quickly adsorbs the ferromagnetic metal in the waste onto the inner wall of the electromagnetic adsorption tube 401, thus separating the iron impurities from the gelled waste. At the same time, the electromagnetic adsorption tube 401 rotates at a constant speed under the drive of the transmission wheel 504 and the ring rack 402, ensuring that the entire inner wall of the electromagnetic adsorption tube 401 can contact the waste, with no dead corners in the adsorption, thus improving the thoroughness of iron removal.

[0035] The rotating shaft 501 drives multiple arc-shaped scraper blades 502 to rotate synchronously. The arc-shaped scraper blades 502 slide in contact with the inner wall of the electromagnetic adsorption tube 401, thoroughly scraping away the ferromagnetic metal adsorbed on the inner wall of the tube. The scraped iron impurities fall into the metal collection seat 5. The structure of the top of the metal collection seat 5, which is high and low, ensures that the iron impurities slide smoothly into the discharge pipe 6 under the action of gravity, avoiding the accumulation of iron impurities.

[0036] Iron impurities in the discharge pipe 6 are smoothly and quickly conveyed to the bottom of the discharge pipe 6 under the uniform rotation of the screw conveyor 601. Since the valve plate 706 is in the open state, the iron impurities fall into the receiving seat 702 below through the opening at the bottom of the discharge pipe 6, realizing the centralized collection of iron impurities. At this time, the dust cover 701 covers the top of the receiving seat 702, forming a sealed protection, effectively preventing the cementitious waste dust from overflowing from the discharge port, avoiding pollution of the working environment, and protecting the health of the operators.

[0037] When the iron impurities in the receiving seat 702 are full, the worm gear 708 is rotated, which drives the worm wheel 707 to rotate. The worm wheel 707 drives the valve stem 705 to rotate, and the valve stem 705 drives the valve plate 706 to rotate 90°, thereby sealing the discharge pipe 6 and preventing any undischarged iron impurities from falling. At the same time, the valve stem 705 drives the rotating rod 704 to rotate, and the rotating rod 704 drives the dust cover 701 to move automatically upward through the connecting rod 703, detaching it from the receiving seat 702. This eliminates the need for manual operation and makes it convenient to handle the receiving seat 702.

[0038] After removing the ferromagnetic metal, the gelled waste continues to slide down to the discharge pipe 301 under the gravity of the inclined structure of the waste pretreatment cylinder 3, and then accurately enters the input end of the machine body 1 through the discharge pipe 301. After the machine body 1 is started, the internal grinding media, liners and other components work together to perform ultrafine grinding on the pretreated uniform and fine waste, and finally produce ultrafine gelled powder that meets the requirements, thus completing the entire grinding operation.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A special ultrafine tube mill for cementitious waste, comprising a machine body (1), characterized in that: The machine body (1) is fixedly connected to the feeding end of the mounting frame (2), and the mounting frame (2) is fixedly connected to the waste pretreatment cylinder (3). The inner wall of the waste pretreatment cylinder (3) is rotatably connected to the ferromagnetic metal removal component (4). The waste pretreatment cylinder (3) is fixedly connected to the inside of the waste pretreatment cylinder (3). The bottom end of the metal collection seat (5) is fixedly connected to the discharge pipe (6). The bottom end of the discharge pipe (6) is rotatably connected to the inner wall of the discharge pipe (6). The waste pretreatment cylinder (3) is rotatably connected to the shaking component (8).

2. The ultrafine tube mill for cementitious waste as described in claim 1, characterized in that: The waste pretreatment cylinder (3) is fixedly connected to the side of the machine body (1) with a discharge pipe (301) through it. The other end of the discharge pipe (301) extends into the input end of the machine body (1). The other side of the waste pretreatment cylinder (3) is fixedly connected to a feed pipe (302). The waste pretreatment cylinder (3) is set in an inclined structure.

3. The ultrafine tube mill for cementitious waste as described in claim 1, characterized in that: The ferromagnetic metal removal assembly (4) includes an electromagnetic adsorption tube (401), which is rotatably connected to the inner wall of the waste pretreatment cylinder (3), and an annular rack (402) is fixedly connected to the inner side of one end of the electromagnetic adsorption tube (401).

4. The ultrafine tube mill for cementitious waste as described in claim 3, characterized in that: The metal collection seat (5) has a high and low structure at the top opening. The higher side of the top of the metal collection seat (5) is in sliding contact with the inner wall of the electromagnetic adsorption tube (401). A rotating shaft (501) is rotatably connected through the inner wall of the metal collection seat (5). Multiple arc-shaped scraper plates (502) are fixedly connected to the outer wall of the rotating shaft (501) in an annular structure. The arc-shaped scraper plates (502) are in sliding contact with the inner wall of the electromagnetic adsorption tube (401). A transmission wheel one (503) and a transmission wheel two (504) are fixedly connected to the left and right ends of the rotating shaft (501), respectively. The transmission wheel two (504) meshes with the annular rack (402) for transmission. One end of the rotating shaft (501) extends through the inner wall of the waste pretreatment cylinder (3) to the outside and is fixedly connected to a motor (505). The motor (505) is fixedly connected to the outer wall of the waste pretreatment cylinder (3).

5. The ultrafine tube mill for cementitious waste as described in claim 4, characterized in that: One end of the discharge pipe (6) extends through the inner wall of the waste pretreatment cylinder (3) to the outside. A spiral conveying rod (601) is rotatably connected through the inner wall of the discharge pipe (6). A toothed disc (602) is fixedly connected to the outer end of the spiral conveying rod (601). The toothed disc (602) meshes with the transmission wheel (503) for transmission.

6. The ultrafine tube mill for cementitious waste as described in claim 1, characterized in that: The receiving dustproof assembly (7) includes a dustproof cover (701), the middle of which is slidably connected to the bottom of the discharge pipe (6), a receiving seat (702) is movably inserted below the dustproof cover (701), a connecting rod (703) is rotatably connected to one side of the top of the dustproof cover (701), a rotating rod (704) is rotatably connected to the other end of the connecting rod (703), and a valve stem (705) is fixedly connected to the other end of the rotating rod (704). The valve stem (705) is rotatably connected to the bottom of the discharge pipe (6).

7. The ultrafine tube mill for cementitious waste as described in claim 6, characterized in that: A valve plate (706) is fixedly connected to one end of the valve stem (705) inside the discharge pipe (6). A worm gear (707) is fixedly connected to one end of the valve stem (705) near the rotating rod (704). A worm (708) is meshed and driven on the lower side of the worm gear (707). The worm (708) is rotatably connected to the outer wall of the discharge pipe (6). A contact rod (709) is fixedly connected to the other end of the valve stem (705). A stop block (603) is fixedly connected to both sides of the bottom end of the discharge pipe (6) near the contact rod (709). The outer wall of the contact rod (709) is in movable contact with the stop block (603).

8. The ultrafine tube mill for cementitious waste as described in claim 5, characterized in that: The material shaking assembly (8) includes an L-shaped rod (801). One end of the L-shaped rod (801) is rotatably connected to the inner wall of the waste pretreatment cylinder (3). An adjusting wheel (802) is fixedly connected to one end of the L-shaped rod (801). The adjusting wheel (802) is meshed with the gear disc (602) for transmission. A movable frame (803) is slidably fitted to the other end of the L-shaped rod (801). A sliding sleeve (804) is fixedly connected to one side of the movable frame (803). A limit frame (805) is slidably fitted to the inner wall of the top of the sliding sleeve (804). The other end of the limit frame (805) is fixedly connected to the inner wall of the waste pretreatment cylinder (3).

9. The ultrafine tube mill for cementitious waste as described in claim 8, characterized in that: A conical shaking disc (806) is rotatably connected through the inner wall of the bottom end of the sliding sleeve (804). A gear (807) is fixedly connected to the top end of the conical shaking disc (806) via a universal joint. A rack (808) is fixedly connected to the bottom end of the limiting frame (805). The gear (807) and the rack (808) are meshed and driven together.

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