Slag granulation equipment, system, hydraulic drive and cooling method

Abstract

The present invention belongs to the field of metallurgical technology, and provides a slag granulation equipment, system, hydraulic drive and cooling method. The slag granulation equipment includes a granulator assembly, including a fixed base and a rotating base for holding slag. The rotating base can be rotatably arranged on the fixed base along its own axis, and a driving part for receiving power is arranged on the rotating base; a driving device is used to provide a pressure cooling medium and send the pressure cooling medium to the granulator assembly. When the pressure cooling medium acts on the driving part, it can drive the rotating base to rotate, and at the same time, the rotating base is cooled by the pressure cooling medium. The present invention uses the pressure cooling medium to drive the rotating base to rotate and cool the rotating base at the same time, so that the equipment can work stably and reliably at a reasonable temperature, improve the equipment efficiency, and reduce the operation and maintenance cost.

Description

Technical Field

[0001] The invention belongs to the technical field of metallurgy, and in particular relates to a slag granulation device, system, hydraulic drive and cooling method. Background Art

[0002] Metallurgical technology is the process of separating and enriching valuable metal elements from other elements in the earth's crust. Valuable metals are collected and used with other elements to form slag. High-temperature metallurgical processes produce a large amount of high-temperature liquid slag. For example, iron and steel metallurgy produces a large amount of ironmaking slag and steelmaking slag. Existing slag treatment processes mostly use a large amount of industrial water for rapid cooling or slow cooling in the air before resource disposal. The heat carried by the slag is not fully recovered and utilized.

[0003] Most of the blast furnace slag is granulated with water and rapidly cooled before being used as cement raw material. The heat is converted into water vapor and discharged into the air. Metallurgical scientists continue to develop metallurgical slag heat recovery and utilization technology. One of the most widely used technologies is the slag dry granulation process. The core principle is to use mechanical energy to crush the slag at about 1500°C into particles with a diameter of about 2-5mm. The slag particles after heat recovery are made into roadbed materials or cement. One of the core equipment of this process is the slag granulation equipment, which is required to have extremely high temperature life and mechanical properties. However, most of the existing equipment is made of high-temperature resistant alloys, which have the problems of short service life, poor stability, poor reliability, high cost and high operation and maintenance costs. Therefore, it is necessary to develop a new high-temperature slag granulation system and method to improve the efficiency and reliability of high-temperature slag heat recovery and utilization technology. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a slag granulation equipment, system, hydraulic drive and cooling method for solving the problems of short service life and poor stability of the slag dry granulation equipment in the prior art.

[0005] To achieve the above-mentioned and other related purposes, the present invention provides a slag granulation device, comprising:

[0006] A granulator assembly, comprising a fixed base and a rotating base for containing slag, wherein the rotating base is rotatably arranged on the fixed base along its own axis, and a driving part for receiving power is arranged on the rotating base;

[0007] The driving device is used to provide a pressure cooling medium and deliver the pressure cooling medium to the granulator assembly. When the pressure cooling medium acts on the driving part, it can drive the rotating base to rotate and cool the rotating base by the pressure cooling medium.

[0008] Optionally, a receiving cavity for receiving a pressure cooling medium is provided between the fixed base and the rotating base, and the driving part is provided on a side of the rotating base facing the receiving cavity.

[0009] Optionally, the driving part is a plurality of rotating blades disposed at the bottom of the rotating base, and the plurality of rotating blades are arranged along the circumference of the rotating base.

[0010] Optionally, the fixed base includes a supporting portion, a supporting portion and a mounting portion connected in sequence, the rotating base is rotatably disposed on the supporting portion, and the accommodating cavity is formed between the rotating base and the supporting portion, and the supporting portion is provided with a liquid inlet and a liquid outlet connected to the accommodating cavity.

[0011] Optionally, the liquid inlet is close to the center of the supporting portion, and the liquid outlet is close to the periphery of the supporting portion.

[0012] Optionally, the supporting portion and the rotating base are both concave structures that are recessed downward, the bottom of the rotating base is rotatably supported on the bottom of the supporting portion through a first rolling component, and the outer edge of the rotating base is rotatably supported on the outer edge of the supporting portion through a second rolling component.

[0013] Optionally, a protruding support shaft is provided at the bottom end of the rotating base, a mounting hole is opened at the bottom of the supporting portion, the support shaft is installed in the mounting hole through the first rolling component, and a retaining portion is provided on the rotating base on the upper side of the support shaft, and the retaining portion separates the accommodating cavity from the first rolling component.

[0014] Optionally, a circulation pipeline assembly is connected between the granulator assembly and the driving device, and the circulation pipeline assembly includes a liquid supply unit and a liquid discharge unit. The liquid supply unit is connected to the fixed base through the liquid inlet, and the liquid discharge unit is connected to the fixed base through the liquid discharge port.

[0015] Optionally, the liquid supply unit includes a liquid supply main pipe and multiple liquid supply branch pipes, and the two ends of each liquid supply branch pipe are respectively connected to the liquid supply main pipe and the accommodating chamber; the liquid drainage unit includes a liquid drainage main pipe and multiple liquid drainage branch pipes, and the two ends of each liquid drainage branch pipe are respectively connected to the liquid drainage main pipe and the accommodating chamber.

[0016] Optionally, the liquid supply branch pipe and the liquid supply main pipe, and the liquid discharge branch pipe and the liquid discharge main pipe are connected via a hose, and a control valve is provided at the connection of the hose.

[0017] Optionally, an air duct extending to the rotating base is provided inside the fixed base along the up and down directions, and an air inlet hole and an exhaust hole connected to the air duct are provided on the side wall of the fixed base, the air inlet hole is close to the bottom of the air duct, and the exhaust hole is close to the top of the air duct, and an air duct fan connected to the bottom of the rotating base is provided in the air duct.

[0018] Optionally, a refractory matrix for contacting with the slag is laid on the top surface of the rotating base.

[0019] Optionally, the upper surface of the refractory substrate is used to contact with the slag, and the lower surface of the refractory substrate is connected to the rotating substrate via a dovetail groove or an anchor.

[0020] The present invention also provides a slag granulation system, comprising:

[0021] blast furnace slag trench;

[0022] A buffer tank, located at the outlet end of the blast furnace slag ditch;

[0023] a granulation bin, located below the buffer tank, and a water outlet of the buffer tank extends into the granulation bin; and

[0024] The slag granulation equipment as described above is located at the bottom of the granulation bin.

[0025] The present invention also provides a hydraulic driving and cooling method, using the slag granulation device as described above, the method comprising:

[0026] A pressure cooling medium is provided by a driving device and acts on a driving portion of a rotating base to drive the rotating base to rotate relative to a fixed base. Meanwhile, the pressure cooling medium exchanges heat with the rotating base to take away heat from the granulator assembly.

[0027] As described above, the present invention has the following beneficial effects:

[0028] The present invention arranges the granulator assembly into a fixed base and a rotating base, and arranges a driving part on the rotating base. The pressure cooling medium acts on the driving part so that the pressure cooling medium drives the rotating base to rotate and cools the rotating base at the same time. On the one hand, the granulator assembly is driven to rotate, and on the other hand, the granulator assembly is cooled, so that the equipment can work stably and reliably at a reasonable temperature, the service life of the equipment is increased, the efficiency of the high-temperature slag dry granulation process equipment is improved, and the operation and maintenance costs are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a partial structural schematic diagram of the slag granulation equipment according to the first embodiment of the present invention;

[0030] Figure 2 It is a schematic structural diagram of a driving part of a granulator assembly according to an embodiment of the present invention;

[0031] Figure 3 It is a partial structural schematic diagram of the slag granulation equipment according to the second embodiment of the present invention;

[0032] Figure 4 It is a partial structural schematic diagram of the slag granulation equipment according to the third embodiment of the present invention;

[0033] Figure 5 It is a schematic structural diagram of a slag granulation system according to an embodiment of the present invention.

[0034] Part Number Description

[0035] 10-granulator assembly; 11-refractory substrate; 12-rotating substrate; 121-driving part; 13-accommodating chamber; 14-fixed substrate; 14a-supporting part; 14b-supporting part; 14c-mounting part; 141-air inlet; 142-air outlet; 143-liquid inlet; 144-liquid outlet; 151-dovetail groove; 152-anchoring piece; 161-first rolling part; 162-second rolling part; 17-induction fan; 18-mounting flange;

[0036] 20-circulation pipeline assembly;

[0037] 21-liquid supply unit; 211-liquid supply branch pipe; 212-liquid supply control valve; 213-liquid supply hose; 214-liquid supply main pipe;

[0038] 22-drainage unit; 221-drainage branch pipe; 222-drainage control valve; 223-drainage hose; 224-drainage main pipe;

[0039] 30-fixing assembly; 31-matching flange; 32-fixed mounting end; 33-connecting gasket; 34-reinforcement rib; 35-fastener;

[0040] 40-driving device; 41-heat exchanger; 42-liquid storage tank; 43-driving motor; 44-boosting pump; 45-control valve station;

[0041] 100-Slag granulation equipment;

[0042] 200- blast furnace slag ditch; 300- buffer tank; 301- buffer tank outlet; 400- granulation bin; 500- slag. DETAILED DESCRIPTION

[0043] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0044] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0045] Before describing the embodiments of the present invention in detail, the application environment of the present invention is described first. The technology of the present invention is mainly applied to the technical field of high-temperature liquid slag granulation. In order to describe the present invention in detail, the present invention is specifically described as follows:

[0046] Please combine Figures 1 to 4 As shown, the present invention provides a slag granulation device, comprising: a granulator assembly 10 and a driving device 40, wherein the granulator assembly 10 comprises a fixed base 14 and a rotating base 12 for containing slag, the rotating base 12 can be rotatably arranged on the fixed base 14 along its own axis, and a driving part 121 for receiving power is arranged on the rotating base 12; the driving device 40 is used to provide a pressure cooling medium and send the pressure cooling medium to the granulator assembly 10, when the pressure cooling medium acts on the driving part 121, it can drive the rotating base 12 to rotate, and at the same time, the rotating base 12 is cooled by the pressure cooling medium.

[0047] The present invention utilizes a pressure cooling medium to drive the granulator assembly 10 to rotate on one hand, and to cool the heat of the slag 500 on the other hand, so that the equipment can work stably and reliably at a reasonable temperature, improve the efficiency of the high-temperature slag dry granulation process equipment, and reduce the operation and maintenance costs. The equipment of the present invention has a reliable principle, a mature manufacturing process, and convenient operation and maintenance, which is conducive to the long-term stable service of the slag dry granulation process technology and the recovery of slag heat.

[0048] A receiving chamber 13 for receiving a pressure cooling medium is provided between the fixed base 14 and the rotating base 12, and the driving unit 121 is provided on the side of the rotating base 12 facing the receiving chamber 13, and the driving unit 121 is located in the receiving chamber 13. Part of the heat of the slag 500 is transferred to the pressure cooling medium through the rotating base 12, and the pressure cooling medium circulates between the driving device 40 and the receiving chamber 13 through the circulation pipeline assembly 20 to drive the rotating base 12 to rotate and cool the heat of the slag 500.

[0049] Specifically, the granulator assembly 10 of the present invention can be connected to the fixed assembly 30. When working, the pressure cooling medium enters the accommodating cavity 13 between the rotating base 12 and the fixed base 14, and the potential energy of the pressure cooling medium is converted into the kinetic energy of the rotating base 12, driving the rotating base 12 to rotate at a high speed. The high-temperature liquid slag 500 falls on the central area of ​​the granulation equipment, and the heat of the slag 500 is successively transferred to the pressure cooling medium through the rotating base 12. The pressure cooling medium is pressurized and circulated again after heat exchange cooling. When installing or replacing the slag granulation equipment 100, close the entrance channel of the slag 500, close the circulation pipeline, and loosen the bottom connection to install or replace the whole device.

[0050] See also Figure 1 As shown, Figure 1 The schematic diagram of the structure of the slag granulation equipment of the first embodiment of the present invention. The high-temperature slag 500 falls on the central area of ​​the high-speed rotating granulator assembly 10, changes the direction of movement after contacting the refractory substrate 11, performs centrifugal movement under the action of friction, and the speed along the radial direction of the granulator assembly 10 continues to increase, and the thickness of the slag layer continues to thin. When the movement speed reaches a certain critical value, the high-temperature slag 500 flies away from the granulator assembly 10 along the tangent direction of the refractory substrate 11, and cools and solidifies in the air. Part of the heat carried by the high-temperature slag 500 is transferred to the refractory substrate 11, and then transferred to the flowing pressure cooling medium after passing through the rotating substrate 12. The pressure cooling medium is preferably a pressure-resistant and wear-resistant hydraulic oil. During operation, the pressure cooling medium flows at a high speed to convectively exchange heat with the rotating substrate 12, and quickly takes the heat of the slag 500 away from the equipment, maintaining the rotating substrate 12 and the refractory substrate 11 to work stably at a reasonable temperature. The hydraulic oil can maintain its physical properties at high temperatures, meeting the requirements of driving the rotating substrate 12 to rotate and cooling the heat of the equipment.

[0051] See also Figure 2As shown, in some embodiments, the driving portion 121 is a plurality of rotating blades disposed at the bottom of the rotating base 12, and the plurality of rotating blades are arranged along the circumference of the rotating base 12. Specifically, the rotating blades are located in the accommodating cavity 13, and drive the rotating base 12 to rotate under the drive of the pressure cooling medium. The plurality of rotating blades can be evenly distributed along the circumference at the bottom of the rotating base 12, which is conducive to driving the rotating base 12 to rotate by pushing the rotating blades to move under the drive of the potential energy of the pressure cooling medium, so that the refractory base 11 fixedly connected to the rotating base 12 rotates with the rotating base 12, so that the slag 500 falling onto the refractory base 11 is granulated. The arrangement of the rotating blades and the shape and structure of the rotating blades are not limited here.

[0052] Continue reading Figure 1 In some embodiments, in order to protect the rotating base 12 and increase the life of the rotating base 12, a refractory base 11 for contacting the slag 500 is laid on the top surface of the rotating base 12. The upper surface of the refractory base 11 is used to contact the slag 500, and the lower surface of the refractory base 11 is connected to the rotating base 12 through a dovetail groove 151 or an anchor 152. Specifically, the lower surface of the refractory base 11 is provided with a plurality of dovetail grooves 151 along its circumference to connect with the rotating base 12; or, the rotating base 12 is provided with a plurality of dovetail grooves 151 along its circumference to connect with the refractory base 11; or, the refractory base 11 and the rotating base 12 are connected through an anchor 152. The above-mentioned connection methods can realize the fixed connection between the refractory base 11 and the rotating base 12, ensuring that the rotating base 12 can drive the refractory base 11 to rotate together when rotating.

[0053] In the above embodiment, the refractory matrix 11 is a refractory brick or an amorphous refractory material. In this way, the equipment can be protected from the high temperature of the high-temperature slag 500, thereby ensuring the life of the equipment. The refractory matrix 11 is made of refractory bricks or an amorphous refractory material, which can withstand high temperatures and improve the life and mechanical properties of the equipment.

[0054] In some embodiments, the fixed base 14 includes a supporting portion 14a, a supporting portion 14b and a mounting portion 14c connected in sequence, the rotating base 12 is rotatably disposed on the supporting portion 14a, and the accommodating cavity 13 is formed between the rotating base 12 and the supporting portion 14a, and the supporting portion 14a is provided with a liquid inlet 143 and a liquid outlet 144 that are connected to the accommodating cavity 13. In order to enable the pressure cooling medium to more efficiently drive the rotating base 12 to rotate, the liquid inlet 143 is close to the center of the supporting portion 14a, the liquid outlet 144 is close to the outer periphery of the supporting portion 14a, and a plurality of the liquid inlet 143 and the liquid outlet 144 are arranged at intervals along the circumference of the supporting portion 14a.

[0055] It can be understood that the supporting portion 14a and the rotating base 12 are both concave structures that are concave downwards, and the bottom of the rotating base is rotatably supported on the bottom of the supporting portion 14a through the first rolling component 161, and the outer edge of the rotating base 12 is rotatably supported on the outer edge of the supporting portion 14a through the second rolling component 162. In addition, a protruding support shaft is provided at the bottom end of the rotating base 12, and a mounting hole is provided at the bottom of the supporting portion 14a. The support shaft is installed in the mounting hole through the first rolling component 161, and a retaining portion is provided on the upper side of the support shaft on the rotating base 12, and the retaining portion separates the accommodating cavity 13 from the first rolling component 161. In this way, the rotating base 12 can rotate relative to the fixed base 14, and the rotating base 12 and the fixed base 14 are sealed and connected through the first rolling component 161 and the second rolling component 162. The first rolling component 161 and the second rolling component 162 allow the rotating base 12 to run at high speed without leaking the pressure cooling medium, and the pressure cooling medium can also lubricate the first rolling component 161 and the second rolling component 162. The first rolling component 161 and the second rolling component 162 can be bearings.

[0056] Furthermore, the structures of the rotating base 12, the refractory base 11 and the supporting portion 14a of the fixed base 14 match each other to facilitate assembly and processing. In the above embodiment, the supporting portion 14a of the fixed base 14 is in an open cup or disc shape, and the supporting portion 14b of the fixed base 14 is in a trumpet or cylindrical shape with a larger upper portion and a smaller lower portion. In this way, the open cup or disc structure can facilitate the supporting portion 14a to play a role in receiving the high-temperature slag 500; the trumpet or cylindrical structure can facilitate the supporting portion 14b to play a supporting role to support the supporting portion 14a of the fixed base 14.

[0057] Figure 1 The top of the granulator assembly 10 is in the shape of an open cup, that is, the supporting portion 14a of the fixed base 14, the rotating base 12 and the refractory base 11 are all in the shape of an open cup. The supporting portion 14b of the fixed base 14 is in the shape of a trumpet that is larger at the top and smaller at the bottom. The refractory base 11 and the rotating base 12 are connected by a dovetail groove 151. The refractory base 11 is a refractory brick, which is prefabricated and processed to be stable and durable.

[0058] A circulation pipeline assembly 20 is connected between the granulator assembly 10 and the driving device 40, and the circulation pipeline assembly 20 includes a liquid supply unit 21 and a liquid discharge unit 22. The liquid supply unit 21 is connected to the fixed base 14 through the liquid inlet 143, and the liquid discharge unit 22 is connected to the fixed base 14 through the liquid discharge port 144. In this way, the rotation of the rotating base 12 can be promoted more efficiently, saving power.

[0059] In some embodiments, the liquid supply unit 21 includes a liquid supply main pipe 214 and a plurality of liquid supply branch pipes 211, and the two ends of each of the liquid supply branch pipes 211 are respectively connected to the liquid supply main pipe 214 and the accommodating chamber 13, and the liquid discharge unit 22 includes a liquid discharge main pipe 224 and a plurality of liquid discharge branch pipes 221, and the two ends of each of the liquid discharge branch pipes 221 are respectively connected to the liquid discharge main pipe 224 and the accommodating chamber 13. The liquid supply branch pipes 211 and the liquid discharge branch pipes 221 are each provided with two or four, and are uniformly distributed around the granulator assembly 10. Specifically, Figure 1 In the illustrated embodiment, the high-pressure pressure cooling medium enters the accommodating chamber 13 in the device from the liquid supply main pipe 214 (or the annular pipe) through multiple liquid supply branches 211, driving the rotating blades to move, thereby driving the rotating base 12 and the refractory base 11 to rotate at high speed. The pressure cooling medium that has released its potential energy and has been heated and heated is discharged from multiple liquid discharge branches 221 and returns to the liquid discharge main pipe 224, and returns to the driving device 40 for recycling after cooling and pressurization. Figure 1 In the embodiment, the liquid supply branch pipes 211 and the liquid discharge branch pipes 221 are each provided in four numbers and are evenly distributed around the granulator assembly 10 in the circumferential direction.

[0060] In addition, the liquid supply branch pipe 211 and the liquid supply main pipe 214, and the liquid discharge branch pipe 221 and the liquid discharge main pipe 224 are connected through a hose, and a control valve is provided at the connection of the hose. Figure 1 In the illustrated embodiment, a liquid supply hose 213 is connected between the liquid supply branch pipe 211 and the liquid supply main pipe 214, and a liquid supply control valve 212 is provided at the connection of both ends of the liquid supply hose 213; a liquid discharge hose 223 is connected between the liquid discharge branch pipe 221 and the liquid discharge main pipe 224, and a liquid discharge control valve 222 is provided at the connection of both ends of the liquid discharge hose 223. In this way, it is convenient to control the liquid supply and discharge of each liquid supply branch pipe 211 and each liquid discharge branch pipe 221 separately, and it is also convenient for equipment maintenance.

[0061] In some embodiments, the fixed base 14 is provided with an air inlet channel extending to the rotating base 12 in the vertical direction, and the side wall of the fixed base 14 is provided with an air inlet hole 141 and an air outlet hole 142 connected to the air inlet channel, the air inlet hole 141 is close to the bottom of the air inlet channel, the air outlet hole 142 is close to the top of the air inlet channel, and the air inlet fan 17 connected to the bottom of the rotating base 12 is provided in the air inlet channel. Specifically, a plurality of air inlet holes 141 are provided at the bottom of the air inlet channel, and a plurality of air outlet holes 142 are provided at the top of the air inlet channel, and the plurality of air inlet holes 141 and the air outlet holes 142 are evenly distributed along the circumference of the air inlet channel. Figure 1In the illustrated embodiment, the top of the induced air passage is uniformly provided with four exhaust holes 142 along the circumferential direction, the bottom of the induced air passage is uniformly provided with four inlet holes 141 along the circumferential direction, and an induced air fan 17 is provided at the center of the induced air passage, and the induced air fan 17 is connected to the rotating base 12 and rotates with the rotating base 12. In other embodiments, the inlet holes 141 may also be provided at the top of the induced air passage, and the exhaust holes 142 may be provided at the bottom of the induced air passage. By providing the induced air passage and the induced air fan 17, the heat at the center of the granulator assembly 10 can be cooled, and the induced air fan 17 allows the internal airflow to perform convective heat exchange, thereby improving the cooling effect.

[0062] In the above embodiment, the granulator assembly 10 is connected to the fixing assembly 30 through the mounting flange 18 provided on the mounting portion 14c of the fixing base 14, so as to fix the granulator assembly 10. The fixing assembly 30 includes a matching flange 31 and a fixed mounting end 32 connected to the matching flange 31. The mounting flange 18 is connected to the matching flange 31 through a locking member. Figure 1 In the illustrated embodiment, a connection gasket 33 is provided between the mounting flange 18 and the matching flange 31 for heat insulation; the mounting flange 18 and the matching flange 31 are connected and locked by a locking member, which may be a bolt. A first reinforcing rib 34 is connected between the mounting flange 18 and the mounting portion 14c of the fixed base 14, and a second reinforcing rib 34 is connected between the matching flange 31 and the fixed mounting end 32. The first reinforcing rib 34 and the second reinforcing rib 34 are provided to strengthen the structural strength and ensure the reliability of the connection.

[0063] See also Figure 3 As shown, Figure 3 Schematic diagram of the structure of the slag granulation equipment of the second embodiment of the present invention. Figure 1 The main difference is, Figure 3 The top of the granulating cup granulator assembly 10 is also in an open cup shape, that is, the supporting portion 14a of the fixed base 14, the rotating base 12 and the refractory base 11 are all in an open cup shape, and the supporting portion 14b of the fixed base 14 is in a trumpet shape with a larger top and a smaller bottom. Figure 1 The main difference is Figure 3 The refractory base 11 and the rotating base 12 are connected by an anchor 152. The refractory base 11 is an amorphous refractory material, which is cast or rammed into shape, and is simple and convenient to replace. Figure 3 The sample device works in the same way as other components. Figure 1 Example.

[0064] See also Figure 4 As shown, Figure 4 Schematic diagram of the structure of the slag granulation equipment of the third embodiment of the present invention. Figure 1 and Figure 3 The main difference is, Figure 4 The top of the granulator assembly 10 is disc-shaped, that is, the supporting portion 14a of the fixed base 14, the rotating base 12 and the refractory base 11 are all disc-shaped, and the supporting portion 14b of the fixed base 14 is cylindrical. The refractory base 11 and the rotating base 12 are connected by an anchor 152. The refractory base 11 is an amorphous refractory material, which is cast or rammed into shape, and is simple and convenient to replace. Figure 4 The sample device works in the same way as other components. Figure 1 Example.

[0065] Based on the same concept, the present invention also provides a slag granulation system, comprising: a blast furnace slag ditch 200, a buffer pool 300, a granulation bin 400 and the slag granulation equipment 100 as described above, wherein the buffer pool 300 is located at the outlet end of the blast furnace slag ditch 200, and a water outlet of the buffer pool 300 is arranged at the bottom of the buffer pool 300; the granulation bin 400 is located below the buffer pool 300, and the water outlet of the buffer pool 300 extends into the granulation bin 400 so as to pour the slag 500; the slag granulation equipment 100 is located at the bottom of the granulation bin 400.

[0066] See also Figure 5 As shown, Figure 5 The schematic diagram of the structure of the slag granulation system of one embodiment of the present invention. The slag 500 is transported to the buffer pool 300 through the blast furnace slag groove 200, and falls to the central area of ​​the slag granulation equipment 100 through the buffer pool outlet 301. After contacting the refractory substrate 11, the direction of movement changes, and centrifugal movement is performed under the action of friction. The radial speed along the refractory substrate 11 continues to increase, and the thickness of the slag layer continues to decrease. When the movement speed reaches a certain critical value, it flies away from the granulator assembly 10 along the tangent direction of the refractory substrate 11 into the granulation bin 400, and cools and solidifies in flight. Part of the heat carried by the high-temperature slag 500 is transferred to the refractory substrate 11, and then transferred to the pressure cooling medium after rotating the substrate 12. The pressure cooling medium carries the heat of the slag 500 away from the equipment, returns to the drive device 40, and is recycled after cooling.

[0067] The driving device 40 is used to provide a pressure cooling medium. Specifically, the driving device 40 includes a pressurizing mechanism and a cooling mechanism. In this embodiment, the cooling mechanism includes a heat exchanger 41 and a liquid storage tank 42. The pressurizing mechanism includes a driving motor 43, a booster pump 44 and a control valve station 45. The heat exchanger 41, the liquid storage tank 42, the driving motor 43, the booster pump 44 and the control valve station 45 are connected in sequence. The outlet end of the drainage manifold 224 is connected to the inlet end of the heat exchanger 41, and the outlet end of the control valve station 45 is connected to the inlet end of the liquid supply manifold 214. Specifically, in this embodiment, the pressure cooling medium is preferably a pressure-resistant and wear-resistant hydraulic oil. The pressure cooling medium is first cooled by the heat exchanger 41 and then enters the liquid storage tank 42 for recycling. The pressure of the pressure cooling medium is increased by the driving motor 43 and the booster pump 44, and then the flow, pressure and flow rate of the pressure cooling medium are controlled by the control valve station 45, thereby controlling the speed, torque and power of the granulator assembly 10.

[0068] Based on the same concept, the present invention also provides a hydraulic driving and cooling method, using the slag granulation device as described above, the method comprising:

[0069] The pressure cooling medium is provided by the driving device 40 and acts on the driving part of the rotating base 12 to drive the rotating base 12 to rotate relative to the fixed base 14. At the same time, the pressure cooling medium exchanges heat with the rotating base 12 to take away the heat of the granulator assembly 10.

[0070] Specifically, during operation, the pressure cooling medium enters the accommodating chamber 13 between the rotating base 12 and the fixed base 14 through the circulation pipeline assembly 20, and the potential energy of the pressure cooling medium is converted into the kinetic energy of the rotating base 12, driving the rotating base 12 to rotate at high speed. The high-temperature slag 500 is first transported to the buffer tank 300 through the blast furnace slag groove 200, and then the slag 500 is dropped onto the granulator assembly 10 of the slag granulation equipment 100 through the water outlet of the buffer tank. After contacting the refractory base 11, the slag 500 changes its direction of movement, performs centrifugal movement under the action of friction, flies away from the granulation cup and enters the granulation bin 400, and cools and solidifies in flight. Part of the heat carried by the slag 500 is successively transferred to the refractory base 11, the rotating base 12, and the pressure cooling medium, and the pressure cooling medium returns to the drive device 40 for cooling and continues to be circulated.

[0071] In summary, in the slag granulation equipment, system, hydraulic drive and cooling method described in the above embodiments, the present invention arranges the granulator assembly into a fixed base and a rotating base, and arranges a driving part on the rotating base, and acts on the driving part through a pressure cooling medium, so that the pressure cooling medium drives the rotating base to rotate, and cools the rotating base at the same time, which realizes the driving operation of the granulator assembly to rotate on the one hand, and realizes the cooling of the granulator assembly on the other hand, so that the equipment can work stably and reliably at a reasonable temperature, thereby increasing the service life of the equipment, improving the efficiency of the high-temperature slag dry granulation process equipment, and reducing the operation and maintenance costs.

[0072] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A slag granulation device, characterized in that: include: A granulator assembly comprises a fixed base and a rotating base for containing slag, wherein the rotating base is rotatably arranged on the fixed base along its own axis, and a driving part for receiving power is arranged on the rotating base; a receiving cavity for receiving a pressure cooling medium is arranged between the fixed base and the rotating base, and the driving part is arranged on a side of the rotating base facing the receiving cavity, and the driving part is located in the receiving cavity; The driving device is used to provide a pressure cooling medium and deliver the pressure cooling medium to the granulator assembly. When the pressure cooling medium acts on the driving part, it can drive the rotating base to rotate and cool the rotating base by the pressure cooling medium.

2. The slag granulation equipment according to claim 1, characterized in that: The driving part is a plurality of rotating blades arranged at the bottom of the rotating base, and the plurality of rotating blades are arranged along the circumferential direction of the rotating base.

3. The slag granulation equipment according to claim 1, characterized in that: The fixed base includes a supporting portion, a supporting portion and a mounting portion which are connected in sequence. The rotating base is rotatably arranged on the supporting portion, and the accommodating cavity is formed between the rotating base and the supporting portion. The supporting portion is provided with a liquid inlet and a liquid outlet which are connected to the accommodating cavity.

4. The slag granulation equipment according to claim 3, characterized in that: The liquid inlet is close to the center of the supporting part, and the liquid outlet is close to the periphery of the supporting part.

5. The slag granulation equipment according to claim 3, characterized in that: The supporting part and the rotating base are both concave structures that are concave downwards. The bottom of the rotating base is rotatably supported on the bottom of the supporting part through a first rolling component, and the outer edge of the rotating base is rotatably supported on the outer edge of the supporting part through a second rolling component.

6. The slag granulation equipment according to claim 5, characterized in that: A protruding support shaft is provided at the bottom end of the rotating base, a mounting hole is opened at the bottom of the supporting part, the support shaft is installed in the mounting hole through the first rolling component, and a retaining portion is provided on the upper side of the support shaft on the rotating base, and the retaining portion separates the accommodating cavity from the first rolling component.

7. The slag granulation equipment according to claim 3, characterized in that: A circulation pipeline assembly is connected between the granulator assembly and the driving device. The circulation pipeline assembly includes a liquid supply unit and a liquid discharge unit. The liquid supply unit is connected to the fixed base through the liquid inlet, and the liquid discharge unit is connected to the fixed base through the liquid discharge port.

8. The slag granulation equipment according to claim 7, characterized in that: The liquid supply unit includes a liquid supply main pipe and multiple liquid supply branch pipes, and the two ends of each liquid supply branch pipe are respectively connected to the liquid supply main pipe and the accommodating chamber. The liquid discharge unit includes a liquid discharge main pipe and multiple liquid discharge branch pipes, and the two ends of each liquid discharge branch pipe are respectively connected to the liquid discharge main pipe and the accommodating chamber.

9. The slag granulation equipment according to claim 8, characterized in that: The liquid supply branch pipe and the liquid supply main pipe, and the liquid discharge branch pipe and the liquid discharge main pipe are connected through a hose, and a control valve is arranged at the connection of the hose.

10. The slag granulation equipment according to any one of claims 1 to 9, characterized in that: An air induced air passage extending to the rotating base is arranged inside the fixed base along the up-down direction, and an air inlet hole and an air exhaust hole connected to the air induced air passage are arranged on the side wall of the fixed base, the air inlet hole is close to the bottom of the air induced air passage, and the air exhaust hole is close to the top of the air induced air passage, and an air induced air fan connected to the bottom of the rotating base is arranged in the air induced air passage.

11. The slag granulation equipment according to any one of claims 1 to 9, characterized in that: A refractory matrix for contacting with slag is laid on the top surface of the rotating base.

12. The slag granulation equipment according to claim 11, characterized in that: The upper surface of the refractory substrate is used to contact with the slag, and the lower surface of the refractory substrate is connected to the rotating substrate through a dovetail groove or an anchor.

13. A slag granulation system, characterized in that: include: blast furnace slag trench; A buffer tank, located at the outlet end of the blast furnace slag ditch; A granulation bin is located below the buffer tank, and a water outlet of the buffer tank extends into the granulation bin; as well as The slag granulation equipment according to any one of claims 1 to 12, wherein the slag granulation equipment is located at the bottom of the granulation bin.

14. A hydraulic driving and cooling method, characterized in that: Using the slag granulation equipment according to any one of claims 1 to 12, the method comprises: A pressure cooling medium is provided by a driving device and acts on a driving portion of a rotating base to drive the rotating base to rotate relative to a fixed base. Meanwhile, the pressure cooling medium exchanges heat with the rotating base to take away heat from the granulator assembly.

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