Continuous granulating crusher for molten and semi-molten steel slag

Abstract

The invention discloses a continuous granulating crusher for molten and semi-molten steel slag, which solves the problem of crushing high-temperature steel slag. The device comprises an equipment rack, a power grinding disc assembly, a power steel roller assembly, a steel slag collecting assembly and a crushing cavity assembly, the power grinding disc assembly is arranged on the lower portion of the equipment rack, and the power steel roller assembly is arranged on the upper portion of the equipment rack and comprises a crushing roller, a bearing assembly, a hydraulic motor and a water medium rotating connector. The crushing roller is internally provided with a water medium cooling channel and is connected with a water cooling system, the crushing roller is mounted on the equipment rack through a bearing, a sliding block and linear sliding fit, and a linear hydraulic jacking cylinder is arranged between the sliding block and the equipment rack; the steel slag collecting assembly is arranged on the equipment rack on the periphery of the grinding disc, and the crushing cavity assembly is arranged on the equipment rack on the periphery of the crushing roller. The steel slag roller crusher is continuous production equipment, crushing at a uniform speed is basically realized, and the granularity of the crushed steel slag is better than that of the traditional steel slag roller crusher.

Description

Technical Field

[0001] The invention relates to the technical field of special equipment for continuously crushing molten and semi-molten high-temperature steel slag. Background Art

[0002] In the process flow of the high-temperature steel slag efficient heat energy recovery project, the first step is to crush the high-temperature steel slag to obtain steel slag particles with more uniform particle size, so that the heat energy contained in the steel slag can be fully recovered in the subsequent process.

[0003] Different from the crushing of ordinary ore, the slag discharge temperature of steel slag is as high as 1200~1300℃. This high-temperature steel slag is between molten and semi-molten states, which contains a lot of heat energy. Since this steelmaking furnace produces both large and small slag, such as a large slag with a diameter of 90 cm, this kind of slag of different sizes cannot be well recovered for heat. Forced cooling is prone to problems such as insufficient heat recovery in large slag, and large slag that has not been crushed will cause unnecessary blockage of subsequent equipment.

[0004] For this kind of high-temperature steel slag, especially the large pieces of steel slag with "sugar core" phenomenon, the traditional mining crusher cannot be directly used for the crushing of steel slag. Therefore, the high-temperature crusher in this field generally uses special equipment, such as steel slag roller crusher, which is one of the most common high-temperature steel slag crushing equipment. Steel slag roller crusher can be divided into single-roll crusher and double-roll crusher according to different models, and there is a record of double-roll crusher in the public document of CN114891934A.

[0005] The slag roller crusher uses a rotating steel roller to crush the high-temperature slag. The steel roller used for crushing is generally set horizontally. The high-temperature slag is crushed by the rotation of the steel roller. Since the hardness of the high-temperature slag is low and there is a "sugar core" phenomenon, the efficiency of this equipment for crushing high-temperature slag is not high, and the uniformity of the crushed slag is not good. And when this equipment is used, the crushed slag needs to be discharged regularly, and regular feeding is required, and continuous feeding and continuous slag discharge cannot be achieved. Summary of the invention

[0006] In order to solve the deficiencies of the prior art, the present invention provides a continuous granulation crusher for molten and semi-molten steel slag, which is a new type of equipment that can continuously crush high-temperature steel slag and achieve uninterrupted crushing. It solves the problem that the existing roller crusher cannot be used for the continuous crushing of high-temperature steel slag, and is committed to improving the crushing efficiency of high-temperature steel slag.

[0007] The technical solution adopted by the present invention to solve the technical problem is: A molten semi-molten slag continuous granulation crusher, comprising an equipment frame, a power rolling plate assembly, a power steel roller assembly, a slag aggregate assembly and a crushing chamber assembly, characterized in that: the power rolling plate assembly is arranged at the lower part of the equipment frame, and comprises a driving motor, a bevel gear reduction and transmission mechanism, and a rolling plate, the driving motor is connected to and drives the bevel gear reduction and transmission mechanism to move, and the bevel gear reduction and transmission mechanism is connected to and drives the rolling plate to rotate; The power steel roller assembly is arranged on the upper part of the equipment frame, and includes a crushing roller, a bearing assembly, a hydraulic motor and a water medium rotary joint. The crushing roller has a water medium cooling channel inside, and the water medium cooling channel is connected to the water cooling system through the water medium rotary joint. The crushing roller is installed on the slider of the equipment frame through two sets of bearing assemblies, and the slider is installed on the equipment frame through a linear sliding fit. A linear hydraulic lifting cylinder is arranged between the slider and the equipment frame; The slag aggregate assembly is arranged on an equipment frame outside the rolling disc, and includes an aggregate trough and a discharge port, wherein the aggregate trough is arranged outside the annular periphery of the rolling disc, and at least one discharge port is provided at the bottom of the aggregate trough; The crushing chamber assembly is arranged on an equipment frame outside the crushing roller. The crushing chamber assembly as a whole is a high temperature resistant shell component, and a slag feeding port and a hot air exhaust port are arranged on the top of the shell.

[0008] An annular flange is arranged at the edge of the rolling working surface of the rolling disc, and a baffle plate made of refractory material is fixed on the upper side corresponding to the flange and on the inner wall of the crushing chamber assembly. The annular gap between the baffle plate and the flange is a channel for the steel slag to fall after crushing. The steel slag that meets the particle size requirements falls into the aggregate trough through the channel.

[0009] The inside of the rolling disc is provided with an air-cooled or water-cooled cooling medium cavity, which passes through a cooling medium channel in a vertical main shaft of a bevel gear reduction and transmission mechanism and is connected to a water cooling system via a rotary joint.

[0010] The rolling working surface of the rolling disc is coated with a refractory material layer.

[0011] A cone protruding upward is arranged at the center of the working surface of the millstone, and the highest point of the cone is lower than the lowest point of the steel roller in the power steel roller assembly. A discharge plate is arranged directly below the discharge port.

[0012] It also includes a scraper, which is in multiple numbers and is evenly installed on the side of the grinding disc along the circumferential direction. The scraper is inserted into the aggregate trough to scrape the crushed steel slag in the aggregate trough.

[0013] The bevel gear reduction and transmission mechanism is connected to the drive motor via a coupling.

[0014] It also includes an air supply pipe, which is located on one side of the aggregate trough. The air supply pipe and the aggregate trough are fixedly connected, and an air blow port is provided on the corresponding side of the aggregate trough. The air blow port is connected to the air supply port on the air supply pipe, and the air supply pipe is connected to the air blowing system.

[0015] The shell of the crushing chamber assembly is a composite structure composed of a metal plate and a refractory lining, and the matching interface between the shell and the crushing roller is a soft connection.

[0016] The beneficial effects of the present invention are: The grinding disc in the present invention rotates horizontally along the vertical axis, and the crushing roller rotates horizontally along the horizontal axis, and a crushing area for high-temperature steel slag is formed between the working surface of the grinding disc and the crushing roller. The composite movement between the grinding disc and the crushing roller continuously crushes the internal steel slag, and the steel slag with the composite particle size requirement obtained after crushing enters the aggregate trough through the annular dropping area. In the above-mentioned rolling, crushing and dropping process, the upstream airflow cools the surface of the high-temperature steel slag to form a steel slag cold shell to avoid adhesion between the steel slag particles. In this process, continuous feeding, crushing and discharging of molten and semi-molten steel slag are realized, and anti-adhesion of high-temperature steel slag is realized. It is a continuous production equipment, which basically achieves uniform speed crushing, and the particle size of the crushed steel slag is better than that of the traditional steel slag roller crusher.

[0017] At the same time, in the process of slag crushing, high-temperature exhaust gas, supersaturated hot water and steam are generated. That is, by increasing the airflow for cooling, the adhesion of high-temperature slag is solved, and the main components of the crusher are cooled and hot water, steam and other by-products are obtained, which has an obvious effect of energy saving and emission reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a plan view of the device in embodiment 1.

[0019] Figure 2 for Figure 1 A--A section view.

[0020] Figure 3 for Figure 1 B--B section view.

[0021] Figure 4 It is a side view of the upper half of the crushing chamber assembly of the equipment.

[0022] Figure 5 This is a schematic diagram of the connection between the crushing roller and the water cooling system in Example 1.

[0023] Figure 6 for Figure 1 further evolution of the structure.

[0024] Figure 7 It is a structural diagram of embodiment 2.

[0025] Figure 8 for Figure 7 further evolution of the structure.

[0026] In the figure: 100 crushers; 110 equipment frame, 111 ground anchor, 112 slider, 113 linear slide rail, 114 hydraulic lifting cylinder; 120 power mill plate assembly, 121 driving motor, 122 coupling, 123 bevel gear reduction and transmission mechanism, 124 mill plate, 1241 casting cavity, 1242 air cooling pipe, 1243 refractory material layer, 1243' refractory material layer, 1244 flange, 1245 baffle plate, 1246 cone, 1247 annular wing plate, 125 scraper; 130 powered steel roller assembly, 131 crushing roller, 1311 water medium cooling channel, 1312 roller teeth, 132 bearing assembly, 133 hydraulic motor, 134 water medium rotary joint; 140 steel slag aggregate assembly, 141 aggregate trough, 142 air supply pipe, 143 discharge plate, 144 discharge port, 145 blast port, 150 crushing chamber assembly, 151 slag feeding port, 152 hot air exhaust port; 160 Shangren Platform; 170 air blowing system, 171 pneumatic rotary joint; 180 water cooling system, 181 plate heat exchanger, 1811 cooling tower, 182 water cooling channel, 183 rotary joint. DETAILED DESCRIPTION

[0027] This embodiment is combined with the specification Figure 1 To Attachment Figure 6 The structure and working principle of the high-temperature steel slag continuous granulation crusher are described in detail, so that relevant technical personnel in the field can fully understand the essence of the invention.

[0028] For the convenience of explaining the present technology, according to the idea of ​​functional division, the crusher 100 includes an equipment frame 110, a power plate assembly 120, a power steel roller assembly 130, a steel slag aggregate assembly 140, a crushing chamber assembly 150, a man-on platform 160, a blast system 170 and a water cooling system 180. The equipment frame 110 is a structure formed by welding of steel, steel pipes and angle steel, which has the advantages of simple forming and low implementation cost, and can form different three-dimensional space structures according to installation requirements. The present invention does not make too many restrictions on the style and outline of the equipment frame. The equipment frame style in the figure is an example for the specific and visual purpose of the equipment, and various structural modifications should be protected.

[0029] refer to Figure 1 The equipment rack in this embodiment is generally a cylindrical outline space and has a manned platform 160, which is used for inspection and maintenance of the equipment.

[0030] When the device is relatively small, the above-mentioned access platform can also be simplified or omitted, which is within the design scope of the present invention.

[0031] The bottom of the equipment rack 110 is fixed to a dedicated foundation using a ground anchor 111 to ensure firmness and reliability.

[0032] A power plate assembly 120 and a power steel roller assembly 130 are installed at the central position of the above-mentioned equipment frame 110, wherein the power plate assembly 120 and the power steel roller assembly are used in pairs. Specifically, the power plate assembly 120 is at the bottom and the power steel roller assembly is at the top. Through the combination of the two, a crushing cavity and a crushing path for high-temperature steel slag are formed, and continuous feeding and continuous discharging are realized. A cooling design is also carried out to meet the requirements of a high-temperature resistant use environment.

[0033] The power rolling disc assembly 120 includes a driving motor 121, a coupling 122, a bevel gear reduction and transmission mechanism 123, a rolling disc 124 and a scraper 125. Figure 2 , wherein the driving motor 121 in this embodiment is arranged horizontally, and the power shaft of the driving motor and the power shaft in the bevel gear reduction and transmission mechanism 123 are connected through a coupling, that is, the driving motor directly drives the above-mentioned bevel gear reduction and transmission mechanism to operate. The above-mentioned bevel gear reduction and transmission mechanism is essentially a reducer composed of a bevel gear assembly, and the vertical output shaft of the bevel gear reduction and transmission mechanism 123 is mechanically connected and drives the milling disc to rotate horizontally. In other words, the milling disc 124 is rotatably installed just above the bevel gear reduction and transmission mechanism, which is a rotatable joint installation, and the above-mentioned milling disc can be driven to rotate in a circular motion by the driving motor.

[0034] Furthermore, the above-mentioned milling disc 124 is a cast iron part, especially a high temperature resistant alloy cast iron part, so as to meet the physical properties under high temperature performance. In terms of spatial structure, the center of the milling disc 124 has a casting cavity 1241, and the existence of the casting cavity enables the milling disc to form a casting body with uniform wall thickness.

[0035] Furthermore, as an option, an air cooling pipe 1242 is arranged in the above-mentioned casting cavity 1241, and an air nozzle is provided on the air cooling pipe to cool the inner wall of the casting cavity by means of air jets. Since the grinding disc is a rotating component, an air circuit is provided on the vertical output shaft of the bevel gear reduction and transmission mechanism. A pneumatic rotary joint is installed at the lower end of the air circuit, and the upper end is connected to the air cooling pipe, and the pneumatic rotary joint 171 is connected to the blowing system 170, that is, the above-mentioned grinding disc is continuously cooled by the blowing system.

[0036] refer to Figure 2 and Figure 3 The upper surface of the roller disc 124 is a rolling working surface made of refractory material, and the side of the roller disc is a scraper mounting surface. Specifically, a refractory material layer 1243 is coated on the rolling working surface of the roller disc, and the refractory material layer can be a laid refractory brick or refractory coating, such as a refractory high-alumina brick. The refractory material layer is coated on the upper surface and the annular side of the roller disc, forming a refractory coating on the cast iron roller disc, thereby preventing the cast iron roller disc from directly contacting with high-temperature steel slag.

[0037] Furthermore, an annular flange 1244 is arranged at the edge position of the above-mentioned rolling working surface, and a baffle plate 1245 of refractory material is fixed on the inner wall of the shell of the power steel roller assembly on the upper side corresponding to the flange. The baffle plate is also annular and forms a uniform equal gap setting with the flange. The gap between the baffle plate and the flange determines the particle size of the steel slag after rolling and crushing. Only the steel slag that meets the particle size requirements (which can be set according to the process requirements and depends on the gap between the baffle plate and the flange) can pass through the gap between the baffle plate and the flange and fall.

[0038] Furthermore, the baffle plate 1245 is installed in an adjustable manner to the inner wall of the power steel roller assembly shell, for example, by installing it at different installation points, so that the gap size between the baffle plate and the flange can be adjusted.

[0039] Furthermore, the refractory material layer 1243 includes an annular refractory cover and a downward pressing annular body, through which the refractory cover is firmly fixed on the mill plate. Figure 2 , Figure 3 .

[0040] Furthermore, an upwardly protruding cone 1246 is provided at the center of the working surface of the milling disc, and the high point of the cone 1246 is lower than the lowest point of the steel roller in the power steel roller assembly, forming the central position expression of the milling disc. In other words, the central axis of the cone and the central axis of the milling disc are arranged in a colinear manner. This arrangement allows the steel slag materials on both sides of the cone to be isolated from each other during the rotation of the milling disc 124, and prevents the steel slag from gathering toward the center.

[0041] There are multiple scrapers 125 evenly installed on the side of the grinding disc. The scrapers are vertically arranged to discharge the high-temperature steel slag in the aggregate trough.

[0042] Furthermore, an annular wing plate 1247 for mounting a scraper is provided on the side of the grinding disc 124 .

[0043] The grinding disc 124 is a casting body with a constant wall thickness.

[0044] The slag aggregate assembly 140 includes an aggregate trough 141, an air supply pipe 142, a discharge plate 143, and a discharge port 144, wherein the aggregate trough and the air supply pipe are annular structures, and are arranged concentrically with the above-mentioned millstone, that is, the aggregate trough 141 is arranged at the periphery of the millstone, and the cross section of the aggregate trough is U-shaped, and at least one discharge port 144 is arranged at the bottom of the aggregate trough 141, and the discharge port is used to discharge the slag, and a discharge plate 143 is arranged directly below the discharge port, and the discharge plate is inclined, and the directional discharge of the slag is formed through the discharge plate. The scraper 125 is inserted into the aggregate trough to scrape the crushed slag in the aggregate trough.

[0045] Furthermore, when the bottom of the aggregate trough 141 is designed as an inclined surface, for example, a 20-degree slope, the design of the scraper can be omitted, and this design should also fall within the protection scope of the present invention.

[0046] The above-mentioned air supply pipe 142 is located on one side of the aggregate trough, for example, it is set on the inner side or the outer side. In this embodiment, it is exemplarily set on the inner side. The air supply pipe 142 and the aggregate trough are fixedly connected, and a blast port 145 is provided on the corresponding side of the aggregate trough 141. The blast port is connected to the air supply port on the air supply pipe, and the air supply pipe 142 is connected to the blast system 170, that is, cold air is blown into the aggregate trough by a blower. The blown cold air flows upstream to cool the falling high-temperature steel slag to prevent the high-temperature steel slag from sticking in the aggregate trough.

[0047] The aggregate trough 141 in this embodiment is a composite structure consisting of a refractory metal shell and a high-temperature resistant material layer. The aggregate trough is fixed to the equipment frame 110 by steel welding, and the upper part of the aggregate trough 141 is the shell of the crushing chamber assembly, and the two are sealed. The sealed connection is a soft connection or a rigid connection.

[0048] A power steel roller assembly 130 includes a crushing roller 131, a bearing assembly 132, a hydraulic motor 133 and a water medium rotary joint 134, wherein the necks at both ends of the crushing roller 131 in the length direction are mounted on a slider 112 of an equipment frame 110 through two sets of bearing assemblies 132, and the slider 112 is a part of the slider assembly. The so-called slider assembly refers to a vertically arranged linear slide rail 113 on the equipment frame, and a slide groove is arranged on the linear slide rail. The above-mentioned slider is mounted on the equipment frame 110 through the linear sliding fit, and a linear hydraulic lifting cylinder 114 is arranged between the above-mentioned slider and the equipment frame. The linear hydraulic lifting cylinder is arranged vertically to lift the height of the slider, that is, the height of the crushing roller can be raised and lowered by the arrangement of the linear hydraulic lifting cylinder.

[0049] The crushing roller 131 has a water medium cooling channel 1311 inside, and a water medium rotating joint 134 is installed at one end of the crushing roller. The flow direction of the liquid cooling medium is referenced to Figure 5 , that is, the temperature of the crushing roller is controlled by water cooling, and the temperature control mainly has a cooling effect. A hydraulic motor 133 is installed at the other end of the crushing roller, that is, the hydraulic motor is installed between the end of the crushing roller and the equipment frame steel frame, and the crushing roller is driven by the hydraulic motor 133 to mechanically rotate, that is, the hydraulic motor is the power equipment of the crushing roller.

[0050] Roller teeth 1312 are provided on the above-mentioned crushing roller 131. The roller teeth are made of high-temperature resistant alloy material and are fixed on the crushing roller. This design allows the roller teeth to be replaced after being worn, thereby reducing the use and maintenance costs.

[0051] Furthermore, the water medium cooling channel 1311 is that the water inlet channel is located at the center of the crushing roller, and the water return channel is located at the inner wall annular space of the crushing roller. The water medium rotating joint with the water inlet and water outlet channels is matched to realize water circulation. In this process, the normal temperature water is further connected to the water cooling system through the water medium cooling channel.

[0052] A water cooling system 180, consisting of a water pipe, a booster pump, a plate heat exchanger 181, a cooling tower 1811, pipelines, valves, instruments, and a PLC intelligent control module, Figure 5 , the crushing roller 131 is cooled down. Using water cooling is a mature technology and will not be described in detail.

[0053] The crushing chamber assembly 150 is wrapped around the periphery of the working section of the crushing roller. The crushing chamber assembly is a high temperature resistant shell component. The shell is a composite structure composed of a metal plate and a refractory lining, which meets the requirements of installation and fire resistance. The shell of the crushing chamber assembly 150 covers the space above the grinding plate, and the interface between the shell and the crushing roller is a soft connection. The so-called soft connection means that a flexible refractory material is set at the interface between the shell and the crushing roller. Figure 3 This setting can meet the lifting travel requirements of the crushing roller and ensure that a good sealing effect is maintained during the lifting process.

[0054] The shell is a cover-like structure consisting of a top and a side, and a slag feeding port 151 and a hot air exhaust port 152 are provided on the top of the shell.

[0055] Furthermore, the number of the slag feeding port 151 can be one or more. Figure 6 , arranged on the top or upper side of the shell. In this embodiment, a funnel-shaped tube is arranged obliquely for feeding steel slag, and the steel slag falls onto the above-mentioned grinding disc after feeding.

[0056] Figure 6 The outer shell of a double slag feeding port structure is schematically shown.

[0057] Furthermore, there are one or more hot air discharge ports 152 for discharging the hot air in the crushing chamber.

[0058] The cooling air in the crushing chamber can be formed by blowing air, that is, actively supplying air, for example Figure 3 The structure shown can also be formed by exhausting air. For example, an exhaust fan (not shown in the figure) is provided at the hot air exhaust port to form an air circulation. When the exhaust fan is working, the air supply pipe on one side of the aggregate trough can be omitted, that is, only air inlet microholes are provided on the aggregate trough.

[0059] Furthermore, the temperature of the hot air obtained by the above-mentioned air cooling is usually higher than 200 degrees Celsius, and the heat energy contained therein can be recovered and reused through an air-to-air heat exchanger.

[0060] Embodiment 2 refer to Figure 7 and Figure 8 This embodiment focuses on optimizing the working surface structure of the millstone. Specifically, the working surface of the millstone is processed into an almost flat structure, and a refractory material layer 1243' is formed on the working surface of the millstone. The refractory material layer is different from that in the first embodiment, that is, it fully covers the working surface.

[0061] Furthermore, a water cooling design is carried out in the internal cavity of the above-mentioned grinding disc 124. Specifically, a water cooling channel 182 is set in the vertical main shaft of the bevel gear reduction and transmission mechanism. The water cooling channel includes a water inlet channel and a water return channel, and a rotary joint 183 is set at the bottom end of the vertical main shaft and connected to the water cooling system 180 of the crushing roller. The water cooling system is not described in detail.

[0062] Since the milling disc 124 is designed with water cooling, specifically, the casting cavity 1241 of the milling disc 124 is designed as a closed cavity, which is connected with the water cooling channel 182 and circulates water. The milling disc is cooled by water circulation. The milling disc in this embodiment omits the design of the high-temperature resistant material layer. The main body temperature of the milling disc is controlled below 300 degrees Celsius by water cooling, so there is no need to set a high-temperature resistant insulation layer. Figure 8 Style shown.

[0063] Furthermore, the liquid level of the water medium in the casting cavity 1241 is controlled. Specifically, the return water port of the above-mentioned water cooling channel 182 is extended to the top of the casting cavity 1241, and the water inlet is set at the bottom of the casting cavity 1241, so that the cold water flows from bottom to top, and the casting wall of the casting cavity is water-cooled.

[0064] The embodiments described above are merely descriptions of preferred implementations of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements to the present invention by relevant technical personnel in the field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A molten semi-molten steel slag continuous granulation crusher, comprising an equipment frame (110), a power plate assembly (120), a power steel roller assembly (130), a steel slag aggregate assembly (140) and a crushing chamber assembly (150), characterized in that: The power roller disc assembly is arranged at the lower part of the equipment frame, and comprises a driving motor (121), a bevel gear reduction and transmission mechanism (123), and a roller disc (124); the driving motor is connected to and drives the bevel gear reduction and transmission mechanism to move; the bevel gear reduction and transmission mechanism is connected to and drives the roller disc (124) to rotate; The power steel roller assembly (130) is arranged on the upper part of the equipment frame, and comprises a crushing roller (131), a bearing assembly (132), a hydraulic motor (133) and a water medium rotary joint (134); the crushing roller has a water medium cooling channel (1311) inside, and the water medium cooling channel is connected to a water cooling system via a water medium rotary joint; wherein the crushing roller (131) is mounted on a slider (112) of the equipment frame (110) via two sets of bearing assemblies (132); the slider (112) is mounted on the equipment frame (110) via a linear sliding fit; and a linear hydraulic lifting cylinder (114) is arranged between the slider and the equipment frame; The slag aggregate assembly (140) is arranged on an equipment frame outside the millstone, and comprises an aggregate trough (141) and a discharge port (144), wherein the aggregate trough (141) is arranged outside the annular shape of the millstone, and the discharge port (144) is provided at the bottom of the aggregate trough (141); The crushing chamber assembly (150) is arranged on an equipment frame outside the crushing roller. The crushing chamber assembly as a whole is a high temperature resistant shell. A slag feeding port (151) and a hot air exhaust port (152) are arranged on the top of the crushing chamber assembly.

2. The continuous granulation and crushing machine for molten and semi-molten slag according to claim 1, characterized in that: The roller disc (124) has an air-cooled or water-cooled cooling medium cavity inside, and the cooling medium cavity passes through a cooling medium channel in a vertical main shaft of the bevel gear reduction and transmission mechanism and is connected to a water cooling system via a rotary joint.

3. The continuous granulation and crushing machine for molten and semi-molten slag according to claim 2, characterized in that: The rolling working surface of the rolling disc (124) is coated with a refractory material layer (1243).

4. The continuous granulation and crushing machine for molten and semi-molten slag according to claim 3, characterized in that: An upwardly protruding cone (1246) is arranged at the center of the working surface of the millstone, and the highest point of the cone is lower than the lowest point of the steel roller in the power steel roller assembly.

5. The continuous granulation and crushing machine for molten and semi-molten slag according to claim 4, characterized in that: A discharge plate (143) is arranged directly below the discharge port.

6. The continuous granulation and crushing machine for molten and semi-molten slag according to claim 1, characterized in that: It also includes a scraper, wherein the scraper (1245) is in multiple number and is evenly installed on the side of the grinding disc along the circumferential direction. The scraper (1245) is inserted into the aggregate trough and scrapes the crushed steel slag in the aggregate trough.

7. The continuous granulation and crushing machine for molten and semi-molten slag according to claim 1, characterized in that: The bevel gear reduction and transmission mechanism is connected to the drive motor via a coupling.

8. The continuous granulation and crushing machine for molten and semi-molten slag according to claim 1, characterized in that: It also includes an air supply pipe, the air supply pipe (142) being located at one side of the aggregate trough, the air supply pipe (142) being fixedly connected to the aggregate trough, and an air blast port (145) being provided on the side of the corresponding aggregate trough (141), the air blast port being connected to the air supply port on the air supply pipe, and the air supply pipe (142) being connected to an air blast system (170).

9. The continuous granulation and crushing machine for molten and semi-molten slag according to claim 1, characterized in that: An annular flange (1244) is provided at the edge of the rolling working surface of the rolling disc, and a baffle plate (1245) made of refractory material is fixed on the upper side corresponding to the flange and on the inner wall of the crushing chamber assembly. The annular gap between the baffle plate and the flange is a channel for the steel slag to fall after crushing. The steel slag that meets the particle size requirements falls into the aggregate trough (141) through the channel.

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