Continuous granulating crusher for molten and semi-molten steel slag

Abstract

The utility model 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; and the steel slag collecting assembly is arranged on the equipment rack on the periphery of the grinding disc. The steel slag roller crusher is continuous production equipment and basically realizes uniform-speed crushing, and the granularity of the crushed steel slag is better than that of the traditional steel slag roller crusher.

Description

Technical Field

[0001] This utility model relates to the technical field of a special equipment for continuous crushing of molten and semi-molten high-temperature steel slag. Background Technology

[0002] In the process flow of the high-temperature steel slag high-efficiency 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 subsequent processes.

[0003] Unlike the crushing of ordinary ores, steel slag discharges at temperatures as high as 1200-1300℃. This high-temperature steel slag is in a state between molten and semi-molten, containing a large amount of heat energy. Because this type of steelmaking furnace produces both large and small pieces of steel slag, such as large pieces with a diameter of 90 cm, the varying sizes of the slag hinder heat recovery. Forced cooling can lead to insufficient heat recovery from the large pieces of slag, and the large, uncrushed slag can cause unnecessary blockages in subsequent equipment.

[0004] For high-temperature steel slag, especially large pieces with a "sugar core" phenomenon, traditional mining crushers cannot be directly used for crushing. Therefore, specialized equipment is generally used for high-temperature crushing in this field, such as steel slag roller crushers, which are one of the most common types of high-temperature steel slag crushing equipment. Steel slag roller crushers can be further divided into single-roll crushers and double-roll crushers depending on the model. Double-roll crushers are documented in the published document CN114891934A.

[0005] Steel slag roller crushers utilize rotating steel rollers to crush high-temperature steel slag. These rollers are typically horizontally positioned, and the crushing is achieved through roller rotation. However, due to the low hardness and presence of a "sugar core" in high-temperature steel slag, this type of equipment is not very efficient at crushing it, and the uniformity of the crushed slag is poor. Furthermore, this equipment requires periodic discharge and feeding of the crushed slag, and cannot achieve continuous feeding and discharge. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a continuous granulation crusher for molten and semi-molten steel slag. This is a new type of equipment that can continuously crush high-temperature steel slag without interruption, solving the problem that existing roller crushers cannot be used for continuous crushing of high-temperature steel slag, and is dedicated to improving the crushing efficiency of high-temperature steel slag.

[0007] The technical solution adopted by this utility model to solve its technical problem is as follows:

[0008] A continuous granulation crusher for molten and semi-molten steel slag includes a frame, a power grinding disc assembly, a power steel roller assembly, a steel slag collection assembly, and a crushing chamber assembly. The power grinding disc assembly is located at the lower part of the frame and includes a drive motor, a bevel gear reducer and transmission mechanism, and a grinding disc. The drive motor is connected to and drives the bevel gear reducer and transmission mechanism, which in turn drives the grinding disc to rotate.

[0009] The power steel roller assembly is configured 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, which is connected to a water-cooling system through the water-medium rotary joint. The crushing roller is mounted on a slider of the equipment frame through two sets of bearing assemblies. The slider is mounted on the equipment frame through a linear sliding fit. A linear hydraulic lifting cylinder is set between the slider and the equipment frame.

[0010] The steel slag aggregate assembly is configured on the equipment frame around the milling disc and includes an aggregate trough and a discharge port. The aggregate trough is arranged around the annular periphery of the milling disc, and at least one discharge port is provided at the bottom of the aggregate trough.

[0011] The crushing chamber assembly is mounted on the equipment frame surrounding the crushing roller. The entire crushing chamber assembly is a high-temperature resistant outer shell component, with a steel slag feeding port and a hot air exhaust port located on the top of the shell.

[0012] An annular flange is provided at the edge of the grinding working surface of the grinding disc, and a baffle plate made of refractory material is fixed on the upper side of 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. Steel slag that meets the particle size requirements falls into the collection trough through this channel.

[0013] The grinding disc has a cooling medium cavity that is either air-cooled or water-cooled. This cooling medium cavity passes through the cooling medium channel in the vertical main shaft of the bevel gear reduction and transmission mechanism and is then connected to the water cooling system via a rotary joint.

[0014] The grinding surface of the millstone is covered with a layer of refractory material.

[0015] A cone protruding upwards is provided at the center of the working surface of the grinding disc, and the highest point of the cone is lower than the lowest point of the steel roller in the power steel roller assembly.

[0016] A discharge plate is provided directly below the discharge port.

[0017] It also includes scrapers, a plurality of which are evenly installed on the side of the grinding disc in a circumferential direction. The scrapers are inserted into the collection trough and scrape the crushed steel slag in the collection trough.

[0018] The bevel gear reduction and transmission mechanism is connected to the drive motor via a coupling.

[0019] It also includes an air supply pipe, which is located on one side of the material collection trough. The air supply pipe and the material collection trough are fixedly connected, and an air inlet is provided on the side of the corresponding material collection trough. The air inlet is connected to the air supply port on the air supply pipe, and the air supply pipe is connected to the blower system.

[0020] The outer shell of the crushing chamber assembly is a composite structure consisting of a metal plate and a refractory lining, and the interface between the outer shell and the crushing roller is a flexible connection.

[0021] The beneficial effects of this utility model are:

[0022] In this invention, the grinding disc rotates horizontally along the vertical axis, and the crushing roller rotates horizontally along the horizontal axis, forming a crushing zone for high-temperature steel slag between the working surface of the grinding disc and the crushing roller. The combined motion of the grinding disc and the crushing roller continuously crushes the internal steel slag. The crushed steel slag, meeting the required particle size, enters the collection trough through an annular discharge area. During the crushing and discharge process, the counter-current airflow cools the surface of the high-temperature steel slag, forming a cold shell and preventing the slag particles from sticking together. This process achieves continuous feeding, crushing, and discharging of molten and semi-molten steel slag, while also preventing the high-temperature steel slag from sticking together. It is a continuous production equipment that achieves essentially uniform crushing speed, and the particle size of the crushed steel slag is better than that of traditional steel slag roller crushers.

[0023] Meanwhile, during the steel slag crushing process, high-temperature exhaust gas and supersaturated hot water and steam are generated. That is, by increasing the airflow for cooling, the adhesion of high-temperature steel slag is solved, and the main components of the crusher are cooled to obtain by-products such as hot water and steam, which has a significant effect on energy saving and emission reduction. Attached Figure Description

[0024] Figure 1 This is a plan view of the device in Embodiment 1.

[0025] Figure 2 for Figure 1 Sectional view A-A.

[0026] Figure 3 for Figure 1 Sectional view B-B.

[0027] Figure 4 This is a side view of the upper part of the crushing chamber assembly of this equipment.

[0028] Figure 5This is a schematic diagram of the connection between the crushing roller and the water cooling system in Example 1.

[0029] Figure 6 for Figure 1 The further evolution of the structure.

[0030] Figure 7 This is a schematic diagram of the structure of Example 2.

[0031] Figure 8 for Figure 7 The further evolution of the structure.

[0032] In the picture:

[0033] 100 crusher;

[0034] 110 Equipment frame, 111 Ground anchor, 112 Slider, 113 Linear guide rail, 114 Hydraulic lifting cylinder;

[0035] 120 Power grinding disc assembly, 121 Drive motor, 122 Coupling, 123 Bevel gear reduction and transmission mechanism, 124 Grinding disc, 1241 Casting cavity, 1242 Air-cooled pipe, 1243 Refractory material layer, 1243' Refractory material layer, 1244 Flange, 1245 Baffle plate, 1246 Cone, 1247 Annular wing plate, 125 Scraper;

[0036] 130 Power 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;

[0037] 140 Steel slag aggregate assembly, 141 Aggregate trough, 142 Air supply duct, 143 Discharge plate, 144 Discharge port, 145 Air blower.

[0038] 150 Crushing chamber assembly, 151 Steel slag feeding port, 152 Hot air exhaust port;

[0039] 160 people on the platform;

[0040] 170 Blower system, 171 Pneumatic rotary joint;

[0041] 180 Water cooling system, 181 Plate heat exchanger, 1811 Cooling tower, 182 Water cooling tunnel, 183 Rotary joint. Detailed Implementation

[0042] This embodiment is described in conjunction with the appendix to the instruction manual. Figure 1 To be continued Figure 6 This paper elaborates on the structure and working principle of the high-temperature steel slag continuous granulation crusher, so that those skilled in the art can fully understand the essence of this utility model.

[0043] For ease of explanation, following a functional division approach, the crusher 100 includes a frame 110, a power grinding disc assembly 120, a power steel roller assembly 130, a steel slag collection assembly 140, a crushing chamber assembly 150, a personnel platform 160, a blower system 170, and a water cooling system 180. The frame 110 is constructed from welded sections of steel, steel pipes, and angle steel, offering advantages such as simple forming and low implementation cost. Furthermore, it can be configured into different three-dimensional spatial structures according to installation requirements. This invention does not impose excessive limitations on the style and outline of the frame; the frame style shown in the illustration is merely an example for the purpose of concretizing and visualizing the equipment. Modifications to various structures should be protected.

[0044] refer to Figure 1 In this embodiment, the equipment frame is generally cylindrical in shape and has a man-access platform 160, which is used for equipment inspection and maintenance.

[0045] When the equipment is relatively small, the above-mentioned platform for people to climb can be simplified or omitted, all of which are within the design scope of this utility model.

[0046] The bottom of the equipment frame 110 is fixed to a dedicated foundation using ground anchors 111 to ensure it is sturdy and reliable.

[0047] The aforementioned equipment frame 110 is equipped with a power grinding disc assembly 120 and a power steel roller assembly 130 at the center position. The power grinding disc assembly and the power steel roller assembly are used in pairs. Specifically, the power grinding disc assembly 120 is below and the power steel roller assembly is above. The combination of the two forms a crushing cavity and crushing path for high-temperature steel slag, and realizes continuous feeding and continuous discharge. Cooling design is also included to meet the requirements of high-temperature operating environment.

[0048] A power mill assembly 120 includes a drive motor 121, a coupling 122, a bevel gear reduction and transmission mechanism 123, a millstone 124, and a scraper 125. (Reference) Figure 2 In this embodiment, the drive motor 121 is horizontally positioned, and its power shaft and bevel gear reducer are connected to the power shaft of the transmission mechanism 123 via a coupling. That is, the drive motor directly drives the aforementioned bevel gear reducer and transmission mechanism. The aforementioned bevel gear reducer and transmission mechanism is essentially a reducer composed of a bevel gear assembly. The vertical output shaft of this bevel gear reducer and transmission mechanism 123 is mechanically connected and drives the grinding disc to rotate horizontally. In other words, the grinding disc 124 is rotatably mounted directly above the bevel gear reducer and transmission mechanism, and is a rotatable, movable mounting. The drive motor can drive the grinding disc to rotate circumferentially.

[0049] Furthermore, the aforementioned millstone 124 is made of cast iron, particularly a high-temperature resistant alloy cast iron, to meet the physical properties required at high temperatures. In terms of spatial structure, the millstone 124 has a casting cavity 1241 in the center, the presence of which allows the millstone to form a cast body with uniform wall thickness.

[0050] Furthermore, as an optional feature, an air-cooling pipe 1242 is arranged inside the casting cavity 1241. The air-cooling pipe is equipped with an air jet nozzle to cool the inner wall of the casting cavity by air jet. Since the grinding disc is a rotating component, an air passage 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 passage, and the upper end is connected to the air-cooling pipe. The pneumatic rotary joint 171 is connected to the blower system 170, that is, the blower system continuously cools and controls the grinding disc.

[0051] refer to Figure 2 and Figure 3 The upper surface of the millstone 124 is a refractory material-based working surface, and the sides of the millstone are scraper mounting surfaces. Specifically, a refractory material layer 1243 is applied to the working surface of the millstone. This refractory material layer can be refractory bricks or refractory coatings, such as refractory high-alumina bricks. This refractory material layer covers the upper surface and the annular sides of the millstone, forming a refractory coating on the cast iron millstone and preventing direct contact between the cast iron millstone and high-temperature steel slag.

[0052] Furthermore, an annular flange 1244 is provided at the edge of the aforementioned rolling working surface, and a refractory baffle plate 1245 is fixed on the inner wall of the power steel roller assembly housing above the corresponding side of the flange. The baffle plate is also annular and is set with a uniform gap with the flange. The gap between the baffle plate and the flange determines the particle size of the crushed steel slag. Only steel slag that meets the particle size requirements (which can be set according to 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.

[0053] Furthermore, the aforementioned baffle plate 1245 is installed in an adjustable manner with respect to the inner wall of the power steel roller assembly housing, for example, by installing it at different mounting points, so that the gap between the baffle plate and the flange can be adjusted.

[0054] Furthermore, the aforementioned refractory material layer 1243 includes an annular refractory cover and a pressing ring, through which the pressing ring securely fixes the refractory cover to the millstone, as shown in the reference. Figure 2 , Figure 3 .

[0055] Furthermore, a raised cone 1246 is provided at the center of the working surface of the grinding disc. The highest point of the cone 1246 is lower than the lowest point of the steel roller in the power steel roller assembly, thus representing the center position of the grinding disc. In other words, the central axis of the cone and the central axis of the grinding disc are collinear. This arrangement ensures that the steel slag material on both sides of the cone is isolated from each other during the rotation of the grinding disc 124, and prevents the steel slag from gathering towards the center.

[0056] There are multiple scrapers 125, which are evenly installed on the side of the grinding disc. The scrapers are vertically arranged and are used to discharge high-temperature steel slag from the collection trough.

[0057] Furthermore, an annular wing plate 1247 for mounting scrapers is provided on the side of the millstone 124.

[0058] The millstone 124 is a cast body with uniform wall thickness.

[0059] A steel slag collection assembly 140 includes a collection trough 141, an air supply pipe 142, a discharge plate 143, and a discharge port 144. The collection trough and air supply pipe are annular structures, concentric with the aforementioned milling disc. Specifically, the collection trough 141 is arranged around the annular periphery of the milling disc, and its cross-section is U-shaped. At least one discharge port 144 is provided at the bottom of the collection trough 141 for discharging steel slag. A discharge plate 143 is located directly below the discharge port, and it is inclined to facilitate directional discharge of the steel slag. A scraper 125 is inserted into the collection trough to scrape the crushed steel slag within.

[0060] Furthermore, when the bottom of the collection trough 141 is designed as an inclined surface, for example, with a slope of 20 degrees, the design of the scraper can be omitted, and this design should also fall within the protection scope of this utility model.

[0061] The aforementioned air supply pipe 142 is located on one side of the collection trough, for example, on the inner or outer side. In this embodiment, it is exemplary and located on the inner side. The air supply pipe 142 is fixedly connected to the collection trough, and an air inlet 145 is provided on the side of the corresponding collection trough 141. The air inlet is connected to the air supply port on the air supply pipe, and the air supply pipe 142 is connected to the blower system 170. That is, cold air is blown into the collection trough by the blower. The blown cold air flows upward in the opposite direction to cool the falling high-temperature steel slag and prevent the high-temperature steel slag from sticking together in the collection trough.

[0062] In this embodiment, the material collection trough 141 is a composite structure composed of a refractory metal shell and a high-temperature resistant material layer. The material collection trough is fixed to the equipment frame 110 by welding steel sections. The upper part of the material collection trough 141 is the shell of the crushing chamber assembly. The two are connected in a sealed manner, which can be a flexible connection or a rigid connection.

[0063] The power roller assembly 130 includes a crushing roller 131, a bearing assembly 132, a hydraulic motor 133, and a water-medium rotary joint 134. The necks at both ends of the crushing roller 131 along its length are mounted on sliders 112 of the equipment frame 110 via two sets of bearing assemblies 132. The sliders 112 are part of the slider assembly. The slider assembly refers to a vertically arranged linear slide rail 113 on the equipment frame, with a groove on the linear slide rail. The slider is mounted on the equipment frame 110 through the linear sliding fit. A linear hydraulic lifting cylinder 114 is installed between the slider and the equipment frame. The vertically arranged linear hydraulic lifting cylinder lifts the slider to adjust its height. In other words, the height of the crushing roller can be adjusted by the linear hydraulic lifting cylinder.

[0064] Crushing roller 131, which has a water medium cooling channel 1311 inside, and a water medium rotary joint 134 is installed at one end of the crushing roller. The flow direction of the liquid cooling medium is referenced. Figure 5 The temperature of the crushing roller is controlled by water cooling, primarily for cooling purposes. A hydraulic motor is installed at the other end of the crushing roller, meaning it is positioned between the end of the crushing roller and the steel frame of the equipment. This hydraulic motor drives the crushing roller to rotate mechanically; in other words, it is the power source for the crushing roller.

[0065] Roller teeth 1312 are provided on the 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 they wear out, thereby reducing the cost of use and maintenance.

[0066] Furthermore, the aforementioned water-medium cooling channel refers to a system where the inlet channel is located at the center of the crushing roller, and the return channel is located in the annular space on the inner wall of the crushing roller. A water-medium rotary joint with inlet and outlet channels is used to achieve water circulation. During this process, ambient temperature water is further introduced into the water cooling system through this water-medium cooling channel.

[0067] Figure 5 In the present invention, a water cooling system 180 is composed of a water supply pipe, a booster pump, a plate heat exchanger 181, a cooling tower 1811, pipes, valves, instruments, and a PLC intelligent control module.

[0068] The crushing chamber assembly 150 surrounds the working section of the crushing roller. This assembly is a high-temperature resistant outer shell, a composite structure consisting of a metal plate and a refractory lining, meeting both installation and fire-resistant requirements. The outer shell of the crushing chamber assembly 150 covers the space above the crushing disc, and the interface between the outer shell and the crushing roller is a flexible connection. This flexible connection refers to using a flexible refractory material at the interface between the outer shell and the crushing roller. (Refer to...) Figure 3 This setup meets the stroke requirements for the crushing roller lifting process and ensures a good seal during the lifting process.

[0069] The aforementioned outer shell is a dome-shaped structure consisting of a top and sides, and a steel slag feeding port 151 and a hot air exhaust port 152 are provided on the top of the outer shell.

[0070] Furthermore, the number of steel slag feeding ports 151 mentioned above can be one or more, as shown in the reference. Figure 6 It is set on the top or side of the outer shell. In this embodiment, a funnel-shaped tube is set at an angle for feeding steel slag. After the steel slag is fed, it falls exactly onto the above-mentioned grinding disc.

[0071] Figure 6 The outer shell of a double steel slag feeding port structure is schematically shown.

[0072] Furthermore, the aforementioned hot air discharge port 152 is one or more, used for the external discharge of hot air from the aforementioned crushing chamber.

[0073] The cooling air within the aforementioned crushing chamber can be generated by blowing air, i.e., active air supply, for example... Figure 3 The structure shown can also be formed by ventilation, for example, by setting an exhaust fan (not shown in the figure) at the hot air exhaust port, which can also form air circulation. When the exhaust fan is working, the air supply pipe on one side of the collection trough can be omitted, that is, only the air inlet micro-holes need to be set on the collection trough.

[0074] Furthermore, the hot air temperature obtained by the aforementioned 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.

[0075] Example 2

[0076] 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 planar structure, and a refractory material layer 1243' is formed on the working surface of the millstone. This refractory material layer is different from that in Embodiment 1, that is, it fully covers the working surface.

[0077] Furthermore, a water-cooling design is implemented inside the cavity of the aforementioned grinding disc 124. Specifically, a water-cooling channel 182 is provided inside the vertical main shaft of the bevel gear reduction and transmission mechanism. This water-cooling channel includes an inlet channel and a return channel. A rotary joint 183 is provided at the bottom end of the vertical main shaft and connected to the water-cooling system 180 of the crushing roller. The details of this water-cooling system will not be elaborated further.

[0078] Because a water-cooling design has been added to the millstone 124, specifically, the casting cavity 1241 of the millstone 124 is designed as a closed cavity, which is connected to the water-cooling channel 182 and allows for water circulation. The millstone is cooled through water circulation. In this embodiment, the design of a high-temperature resistant material layer is omitted. Water cooling keeps the main body temperature of the millstone below 300 degrees Celsius, thus eliminating the need for a high-temperature resistant insulation layer. (Refer to...) Figure 8 The style shown.

[0079] Furthermore, the water level in the casting cavity 1241 is controlled. Specifically, the return water inlet of the aforementioned water cooling channel 182 is extended to the top of the casting cavity 1241, and the inlet is located at the bottom of the casting cavity 1241, thus forming a flow of cold water from bottom to top to cool the casting wall of the casting cavity.

[0080] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Without departing from the spirit of the present utility model, all modifications and improvements to the present utility model by those skilled in the art should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A continuous granulation crusher for molten and semi-molten steel slag, comprising a frame (110), a power grinding disc assembly (120), a power steel roller assembly (130), a steel slag collection assembly (140), and a crushing chamber assembly (150), characterized in that: The power grinding disc assembly is located at the lower part of the equipment frame and includes a drive motor (121), a bevel gear reduction and transmission mechanism (123), and a grinding disc (124). The drive motor is connected to and drives the bevel gear reduction and transmission mechanism to operate, and the bevel gear reduction and transmission mechanism is connected to and drives the grinding disc (124) to rotate. The power steel roller assembly (130) is configured on the upper part of the equipment frame and includes 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, which is connected to a water cooling system through the water medium rotary joint. The crushing roller (131) is mounted on a slider (112) of the equipment frame (110) through two sets of bearing assemblies (132). The slider (112) is mounted on the equipment frame (110) through a linear sliding fit. A linear hydraulic lifting cylinder (114) is set between the slider and the equipment frame. The steel slag collection assembly (140) is configured on the equipment frame around the millstone and includes a collection trough (141) and a discharge port (144). The collection trough (141) is arranged around the annular periphery of the millstone and at least one discharge port (144) is provided at the bottom of the collection trough (141). The crushing chamber assembly (150) is mounted on the equipment frame around the crushing roller. The entire crushing chamber assembly is a high-temperature resistant outer shell component. A steel slag feeding port (151) and a hot air exhaust port (152) are provided on the top of the outer shell.

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

3. The continuous granulation crusher for molten and semi-molten steel slag according to claim 2, characterized in that, The grinding surface of the grinding disc (124) is covered with a refractory material layer (1243).

4. The continuous granulation crusher for molten and semi-molten steel slag according to claim 3, characterized in that, A cone (1246) with an upward protrusion is provided at the center of the working surface of the grinding disc, 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 crusher for molten and semi-molten steel slag according to claim 4, characterized in that, A discharge plate (143) is provided directly below the discharge port.

6. The continuous granulation crusher for molten and semi-molten steel slag according to claim 1, characterized in that, It also includes scrapers, a plurality of which are evenly installed on the side of the grinding disc in the circumferential direction. The scrapers (125) are inserted into the collection trough and scrape the crushed steel slag in the collection trough.

7. The continuous granulation crusher for molten and semi-molten steel 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 crusher for molten and semi-molten steel slag according to claim 1, characterized in that, It also includes an air supply pipe (142) located on one side of the material collection trough. The air supply pipe (142) is fixedly connected to the material collection trough, and a blower (145) is provided on the side of the corresponding material collection trough (141). The blower is connected to the air supply port on the air supply pipe, and the air supply pipe (142) is connected to the blower system (170).

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

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