Anti-bonding molten slag granulation cylinder and working method thereof

Abstract

The invention relates to an anti-bonding molten slag granulation cylinder and a working method thereof. The anti-bonding molten slag granulation cylinder comprises a rotary molten slag granulation cylinder and a scraper device, the rotary molten slag granulation cylinder is composed of a cylinder body, a transmission device, a riding wheel device, a catch wheel device and a base support. The scraper device comprises a supporting frame, a scraper, a high-pressure water pipe and a spray head. An anti-sticking coating is arranged on the inner wall of the barrel body of the rotary molten slag granulating barrel, so that the sticking firmness of the molten slag is reduced; by adopting the method of combining the fixed scraper with high-pressure water impact, the molten slag attached to the inner wall of the cylinder body can be efficiently cleaned, the production efficiency and the operation stability of the molten slag granulating cylinder are improved, and the purpose of reducing the production cost is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of molten slag granulation, in particular to an anti-adhesion molten slag granulation cylinder and a working method thereof. Background Art

[0002] Molten slag is a molten substance floating on the surface of liquid materials produced during processes such as pyrometallurgy, high-temperature smelting, or welding. Its main components are oxides and sulfides, often containing small amounts of metallic impurities. Molten slag produced by steel companies can be converted into a renewable resource through technical processing, while also recovering the high-temperature heat energy it carries.

[0003] Air quenching is a common method for recycling molten slag. It uses high-speed airflow to break up the liquid slag and rapidly cool it into fine particles. During air quenching, the molten slag is broken down by the combined effects of the high-pressure airflow, the condensation force of the air, and the thermal expansion of the slag, forming spherical fine particles. However, existing molten slag granulation equipment using air quenching generally suffers from the problem of molten slag easily adhering to the equipment's inner surfaces (such as the inner wall of the rotary granulation drum), and requires regular shutdown for cleaning. This not only affects production progress and efficiency, but also consumes a lot of manpower and material resources during cleaning, increasing production costs.

[0004] The Chinese utility model patent with authorization announcement number CN220413926U discloses "an anti-sticking roller for hot-mixed regeneration in an asphalt mixture plant," comprising a frame and a roller assembly; the frame is provided with two support assemblies for supporting the roller assembly, and the roller assembly is rotatably connected to the support assemblies; the frame is provided with a drive assembly, which is transmission-connected to the roller assembly; the frame is provided with a scraper assembly, and the scraper assembly is cooperatively connected to the inner wall of the roller assembly. This effectively overcomes the problem that asphalt recycled material has a certain degree of viscosity and easily sticks to the inner wall of the roller during the rotation of the roller. However, if this anti-sticking roller is used for molten slag air quenching, the following problems exist: after the molten slag is condensed by air quenching, it not only has strong adhesion but also has high hardness, and the spring-type scraper used in it cannot effectively scrape off the adhered condensed slag. In addition, the molten slag air quenching process is characterized by high temperature and slag corrosion, and the service life of the spring-type scraper working in this environment will be greatly shortened. Summary of the Invention

[0005] The present invention provides an anti-sticking molten slag granulation drum and a working method thereof. The inner wall of the rotary molten slag granulation drum is provided with an anti-stick coating, which reduces the firmness of the molten slag adhesion; a fixed scraper combined with a high-pressure water impact method is adopted to efficiently clean the molten slag attached to the inner wall of the drum, thereby improving the production efficiency and operating stability of the molten slag granulation drum and achieving the purpose of reducing production costs.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A molten slag granulation cylinder with anti-sticking properties comprises a rotary molten slag granulation cylinder and a scraper device; the rotary molten slag granulation cylinder is composed of a cylinder, a transmission device, a supporting roller device, a blocking wheel device and a base bracket, the cylinder is arranged at an angle and is jointly supported by the transmission device and the supporting roller device arranged on the base bracket; an anti-sticking coating is arranged on the inner wall of the cylinder; the scraper device comprises a support frame 21, a scraper, a high-pressure water pipe and a nozzle, the support frame 21 is composed of a support beam and a column, the support beam is arranged along the axial length of the cylinder, and both ends of the support beam extend out of the cylinder and are connected to the base bracket through the column; the high-pressure water pipe is arranged in the support beam, one end of the high-pressure water pipe is connected to the external high-pressure water delivery pipeline, and a plurality of nozzles are arranged on the high-pressure water pipe in the cylinder along the longitudinal direction; a plurality of scrapers are arranged side by side on the support beam in the cylinder along the longitudinal direction, and the scraper blades are close to the inner wall of the cylinder; the spraying direction of the nozzle is toward the scraper blade.

[0008] The angle between the axis of the cylinder and the horizontal plane is 6° to 10°; a transmission device, a blocking wheel device and a supporting wheel device are arranged in sequence from the lower end to the upper end of the cylinder.

[0009] The cylinder body is composed of a steel cylinder, a heat-insulating castable layer and an anti-stick coating in sequence from outside to inside.

[0010] The support beam is composed of channel steel, baffle and gusset plate; two channel steels are arranged opposite to each other, one side of the two channel steels is connected by the baffle plate, and the other side is connected by the gusset plate, the gusset plates are arranged at intervals along the longitudinal direction of the support beam, and the nozzle is arranged in the gap between the two corresponding gusset plates.

[0011] The high-pressure water pipe is arranged in the middle of the support beam through a fixing plate; the high-pressure water pipe and the nozzle are connected by threads, and the nozzles are arranged at a spacing of 100 to 300 mm.

[0012] The scraper device consists of a connecting plate, a fastener and a scraper; the scraper is connected to the support beam through the corresponding connecting plate, and the scraper and the connecting plate are connected through the fastener.

[0013] The scraper devices are 2 to 4 groups, which are arranged on both sides of the cylinder or spaced apart along the circumference of the cylinder; the scrapers on each group of scraper devices are staggered along the axial direction of the cylinder.

[0014] The angle between the scraper and the normal direction of the inner wall of the cylinder is 45° to 60°; the blade of the scraper is parallel to the inner wall of the cylinder, and the distance between the two is 5 to 10 mm.

[0015] A method for operating an anti-adhesion molten slag granulating drum includes the following steps:

[0016] S1. Start the transmission device to drive the cylinder to rotate, and high-pressure air and molten slag enter the cylinder at the same time;

[0017] S2, high-pressure air breaks up the molten slag and condenses it into small particles. The condensed slag falls to the bottom of the cylinder and is discharged from the cylinder under the rotation of the cylinder;

[0018] S3. During the process of breaking up the molten slag, some of the unsolidified slag adheres to the inner wall of the cylinder. During the rotation of the cylinder, the scraper is used to clean the slag adhered to the inner wall of the cylinder. Since the inner wall of the cylinder is provided with an anti-stick coating, the slag is easily removed by the scraper, and the scraped slag is discharged by the rotation of the cylinder.

[0019] During the scraping process, the high-pressure water pipe intermittently supplies water. The high-pressure water sprayed by the nozzle regularly flushes the inner wall of the cylinder near the scraper blade, removing the fine slag particles remaining after scraping and washing away the slag adhered to the scraper blade. The back-splashing high-pressure water cools the scraper.

[0020] S5. The high-pressure water sprayed by the nozzle and the steam generated by absorbing heat during the slag flushing process are discharged from the cylinder together with the condensed slag, completing the molten slag granulation process.

[0021] The high-pressure water sprayed from the nozzle is fan-shaped, and the spraying pressure is 0.8-1.0 MPa.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] (1) A rotary molten slag granulating cylinder is used as the wind quenching granulating equipment. An anti-stick coating is provided on the inner wall of the cylinder, which reduces the firmness of the molten slag adhesion, facilitates the removal of the molten slag, reduces the working intensity of the scraper device, and extends the service life of the scraper device;

[0024] (2) The use of a fixed scraper combined with high-pressure water impact can effectively clean the molten slag attached to the inner wall of the cylinder, without the need to stop the machine regularly for manual cleaning, which reduces labor costs, improves production efficiency and equipment operation stability, saves electricity consumption during equipment operation, and thus reduces production costs.

[0025] (3) The scraper device is fixed to the steel composite beam with fasteners, which is convenient for disassembly, maintenance and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is an outline diagram of the anti-sticking molten slag granulation cylinder of the present invention.

[0027] Figure 2 Schematic cross-sectional view of the anti-sticking molten slag granulation cylinder of the present invention.

[0028] Figure 3 It is a schematic diagram of the three-dimensional structure of the scraper device of the present invention.

[0029] Figure 4 yes Figure 3 AA view in.

[0030] In the figure: 1-rotary molten slag granulating cylinder; 2-scraper device; 11-cylinder body; 12-transmission device; 13-supporting roller device; 14-blocking wheel device; 15-base bracket; 111-steel cylinder; 112-insulating casting material layer; 113-anti-stick coating; 21-support frame; 211-support beam; 2111-channel steel; 2112-attachment plate; 2113-baffle; 212-column; 22-scraper; 23-connecting plate; 24-high-pressure water pipe; 241-flange; 25-nozzle; 26-fastener; 27-fixing plate. DETAILED DESCRIPTION

[0031] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings:

[0032] like Figures 1 to 4 As shown, the present invention discloses an anti-sticking molten slag granulating cylinder, comprising a rotary molten slag granulating cylinder 1 and a scraper device 2; the rotary molten slag granulating cylinder is composed of a cylinder body 11, a transmission device 12, a supporting roller device 13, a blocking roller device 14 and a base bracket 15. The cylinder body 11 is tilted and supported by the transmission device 12 and the supporting roller device 13 provided on the base bracket 15; an anti-stick coating 113 is provided on the inner wall of the cylinder body 11; the scraper device 2 comprises a support frame 21, a scraper 22, a high-pressure water pipe 24 and a nozzle 25, and the support frame 21 is composed of a support beam 211 and columns 212, the support beam 211 is arranged along the axial length of the cylinder 11, and both ends of the support beam 211 extend out of the cylinder 11 and are connected to the base bracket 15 through the columns 212; the high-pressure water pipe 24 is arranged in the support beam 211, and one end of the high-pressure water pipe 24 is connected to the external high-pressure water delivery pipeline. The high-pressure water pipe 24 located in the cylinder 11 is provided with multiple nozzles 25 along the longitudinal direction; the support beam 211 located in the cylinder 11 is provided with multiple scrapers 22 side by side along the longitudinal direction, and the blade of the scraper 22 is close to the inner wall of the cylinder 11; the spraying direction of the nozzle 25 is toward the blade of the scraper 22.

[0033] The included angle between the axis of the cylinder 11 and the horizontal plane is 6° to 10°; along the direction from the lower end to the upper end of the cylinder 11, a transmission device 12, a wheel blocking device 14 and a supporting wheel device 13 are sequentially arranged.

[0034] The cylinder body 11 is composed of a steel cylinder 111 , a thermal insulation castable layer 11 and an anti-stick coating 113 from the outside to the inside.

[0035] The support beam 211 is composed of a channel steel 2111, a baffle 2113 and a gusset plate 2112; two channel steels 2111 are arranged opposite to each other, one side of the two channel steels 2111 is connected by a baffle 2113, and the other side is connected by a gusset plate 2112, and the gusset plates 2112 are arranged at intervals along the longitudinal direction of the support beam 211, and the nozzle 25 is arranged in the gap between the two corresponding gusset plates 2112.

[0036] The high-pressure water pipe 24 is arranged in the middle of the support beam 211 through a fixing plate 27; the high-pressure water pipe 24 and the nozzle 25 are connected by threads, and the nozzles 25 are arranged at a spacing of 100 to 300 mm.

[0037] The scraper device 2 is composed of a connecting plate 23 , a fastener 26 and a scraper 22 ; the scraper 22 is connected to the support beam 211 via the corresponding connecting plate 23 , and the scraper 22 and the connecting plate 23 are connected via a fastener 26 .

[0038] The scraper devices 2 are in 2 to 4 groups, which are arranged on both sides of the cylinder 11 or spaced apart along the circumference of the cylinder 11 ; the scrapers 22 on each group of scraper devices 2 are staggered along the axial direction of the cylinder 11 .

[0039] The angle between the scraper 22 and the normal direction of the inner wall of the cylinder 11 is 45° to 60°; the blade of the scraper 22 is parallel to the inner wall of the cylinder 11, and the distance between the two is 5 to 10 mm.

[0040] The operating method of the anti-sticking molten slag granulation drum of the present invention includes the following steps:

[0041] S1, start the transmission device 12 to drive the cylinder 11 to rotate, and high-pressure air and molten slag enter the cylinder 11 at the same time;

[0042] S2, high-pressure air breaks up the molten slag and condenses it into small particles, and the condensed slag falls to the bottom of the cylinder 11, and is discharged from the cylinder under the rotation of the cylinder 11;

[0043] S3. During the process of breaking up the molten slag, some of the unsolidified slag adheres to the inner wall of the cylinder 11. During the rotation of the cylinder 11, the scraper 22 is used to clean the slag adhered to the inner wall of the cylinder 11. Since the inner wall of the cylinder 11 is provided with an anti-stick coating 113, the slag is easily removed by the scraper 22, and the scraped slag is discharged by the rotation of the cylinder 11.

[0044] During the scraping process, the high-pressure water pipe 24 intermittently supplies water, and the nozzle 25 regularly sprays high-pressure water to flush the inner wall of the cylinder 11 near the blade of the scraper 22, removing the fine slag particles remaining after scraping and flushing away the slag adhering to the blade of the scraper 22. The back-splashing high-pressure water cools the scraper 22.

[0045] S5. The high-pressure water sprayed by the nozzle 25 and the steam generated by absorbing heat during the slag flushing process are discharged from the cylinder 11 together with the condensed slag, completing the molten slag granulation process.

[0046] The high-pressure water sprayed by the nozzle 25 is fan-shaped, and the spraying pressure is 0.8-1.0 MPa.

[0047] The anti-sticking molten slag granulating drum of the present invention comprises a drum body 11 , a transmission device 12 , a supporting wheel device 13 , a blocking wheel device 14 , a scraper device 2 and a base support 15 .

[0048] The bottom of the cylinder 11 is provided with a supporting roller device 13, a blocking roller device 14 and a transmission device 12 in order from high to low along the axial direction. The transmission device 12 is used to provide power to drive the cylinder 11 to rotate. The angle between the axis of the cylinder 11 and the horizontal plane is 6° to 10°, preferably 8°. The transmission device 12, the supporting roller device 13 and the blocking roller device 14 are respectively fixed on the base bracket 15. The head (feed end) of the cylinder 11 is located on the supporting roller device 13, which provides support for the cylinder 11 and radially limits the cylinder 11. The blocking roller device 14 is provided in the middle of the cylinder 11. When the cylinder 11 rotates, the blocking roller device 14 rotates synchronously, and the blocking roller device 14 is used to axially limit the cylinder 11. The tail (discharge end) of the cylinder 11 is located on the transmission device 12, and the transmission device 12 is used to provide rotational power to the cylinder 11. The above structures are all existing conventional structures and are not described in detail here.

[0049] like Figure 2 As shown, the inner wall of the cylinder 11 of the present invention is provided with a thermal insulation casting material layer 112. The thermal insulation casting material layer 112 acts as a heat insulator to prevent the high temperature during the molten slag air quenching from causing the cylinder 11 to be thermally deformed, thereby affecting the normal operation of the equipment. The thickness of the thermal insulation casting material layer 112 is 50 to 100 mm, preferably 100 mm. The inner side of the thermal insulation casting material layer 112 is provided with an anti-stick coating 113, preferably a ceramic anti-stick coating. The anti-stick coating 113 can be used in high-temperature and corrosive environments and has anti-stick properties. The thickness of the anti-stick coating 113 is 10 to 20 mm, preferably 20 mm.

[0050] The barrel 11 of the present invention is provided with a scraper assembly 2 within it. The scraper assembly 2 comprises two to four sets, preferably two sets, one on each side of the barrel 11. The scrapers 22 in each set of scraper assemblies 2 are staggered to prevent missed scraping areas. The staggered distance between the scraper blades is 100 to 200 mm, preferably 100 mm. Both ends of the scraper assembly 2 extend outside the barrel 11 and are secured to a base bracket 15.

[0051] like Figure 3 、 Figure 4As shown, the scraper device 2 of the present invention includes: a support frame 21 (composed of a support beam 211 and a column 212, wherein the support beam 211 is composed of a channel steel 2111, a gusset plate 2112 and a baffle 2113), a scraper 22 (connected to the support beam 211 through a connecting plate 23), a high-pressure water pipe 24 (connected to the support beam 211 through a fixing plate 27) and a nozzle 25 (connected to the high-pressure water pipe 24). The two ends of the support beam 211 are welded and fixed to the top of the corresponding column 212, and the bottom end of the column 212 is welded and fixed to the base bracket 15. The high-pressure water pipe 24 is welded and fixed to the inside of the support beam 211 through a fixing plate 27. The connecting plate 23 is welded and fixed to the support beam 211, and the scraper 22 is fixedly connected to the connecting plate 23 through a fastener 26.

[0052] The material of the support beam 211 (including the channel steel 2111, the gusset plate 2112 and the baffle 2113) is heat-resistant stainless steel. The channel steel 2111 (other steel sections, such as I-beams, may also be used instead) is two openings arranged inwardly opposite to each other, and the edge spacing of the wing plates of the two channel steels 2111 is 50 to 70 mm, preferably 50 mm. The length of the gusset plate 2112 is 100 to 200 mm, preferably 150 mm. The width of the gusset plate 2112 is 100 to 200 mm, preferably 150 mm. The thickness of the gusset plate 2112 is 8 to 12 mm, preferably 10 mm. The gusset plate 2112 is fixed to the outer side of the wing plates of the two channel steels 2111 at the end of the nozzle 25, and the arrangement spacing of the gusset plates 2112 is 300 to 400 mm, preferably 350 mm. The length of the baffle 2113 is the same as that of the channel steel 2111, and the width of the baffle 2113 is 100 to 200 mm, preferably 150 mm. The thickness of the baffle 2113 is 8 to 12 mm, preferably 10 mm. The baffle 2113 is welded and fixed to the outer side of the two channel steel 2111 wing plates at the end without the nozzle 25. The support beam 211 is formed into a frame-like three-dimensional space by the two channel steels 2111, the gusset plate 2112 and the baffle 2113, which protects the high-pressure water pipe 24 and the nozzle 25 arranged therein from high-temperature corrosion, and provides support for the scraper 22.

[0053] The angle between the scraper 22 of the present invention and the normal of the inner wall of the cylinder 11 is 45° to 60°, preferably 60°. The blade of the scraper 22 is parallel to the inner wall of the cylinder 11, and the distance between the blade of the scraper 22 and the inner wall of the cylinder 11 is 5 to 10 mm, preferably 5 mm. The material of the scraper 22 is preferably cast stainless steel. The length of the scraper 22 is 250 to 450 mm, preferably 350 mm. The width of the scraper 22 is 200 to 300 mm, preferably 250 mm. The thickness of the scraper 22 is 24 to 36 mm, preferably 30 mm. The gap between two adjacent scrapers 22 is 5 to 10 mm, preferably 5 mm.

[0054] The high-pressure water pipe 24 is connected to the external high-pressure water delivery pipeline via a flange 241. The high-pressure water pipe 24 is threadedly connected to the nozzle 25. The nozzles 25 are spaced 100 to 300 mm apart, preferably 150 mm apart. The high-pressure water sprayed from the nozzles 25 is fan-shaped, with a pressure of 0.8 to 1.0 MPa, preferably 1.0 MPa. The spray direction of the nozzles 25 is toward the blade of the scraper 22.

[0055] The following examples are implemented under the premise of the technical solution of the present invention, and provide detailed implementation methods and specific operating processes, but the scope of protection of the present invention is not limited to the following examples. The methods used in the following examples are conventional methods unless otherwise specified.

[0056] [Example]

[0057] In this embodiment, the anti-adhesion molten slag granulating cylinder includes a rotary molten slag granulating cylinder and a scraper device 2; the rotary molten slag granulating cylinder is composed of a cylinder body 11, a transmission device 12, a supporting wheel device 13, a blocking wheel device 14 and a base bracket 15.

[0058] In this embodiment, the outer diameter of the cylinder 11 is 1540 mm and the length is 6000 mm. The cylinder 11 is located on the transmission device 12 and the supporting roller device 13, and the angle between the axis of the cylinder 11 and the horizontal plane is 8°. The supporting roller device 13 is arranged at the bottom of the head position of the cylinder 11, the blocking wheel device 14 is arranged at the bottom of the middle position of the cylinder 11, and the transmission device 12 is arranged at the bottom of the tail position of the cylinder 11. The transmission device 12 is used to drive the cylinder 11 to rotate, and the cylinder 11 drives the supporting roller device 13 to rotate. The transmission device 12, the supporting roller device 13, and the blocking wheel device 14 are all arranged on the base bracket 15, and the two ends of the scraper device 2 are respectively connected to the base bracket 15.

[0059] In this embodiment, the inner wall of the cylinder 11 is provided with a thermal insulation casting material layer 112, and the inner side of the thermal insulation casting material layer 112 is provided with a ceramic anti-stick coating 113. The thickness of the thermal insulation casting material layer 112 is 100 mm, and the thickness of the ceramic anti-stick coating 113 is 20 mm.

[0060] In this embodiment, the total length of the scraper device 2 is 8000 mm, and there are two groups of them, which are arranged on both sides of the inside of the cylinder 11 parallel to the axis of the cylinder 11. A DN50 high-pressure water pipe 24 is set in the support beam 211 of the scraper device 2. The lines connecting the axis of the high-pressure water pipe 24 and the axis of the cylinder 11 in the two groups of scraper devices 2 are at an angle of 60° to the vertical center line of the cylinder 11. 16 scrapers 22 are arranged side by side on each group of scraper devices 2. The length of the scraper 22 is 350 mm, the width is 250 mm, and the thickness is 30 mm. In order to prevent the scraper 22 from generating extrusion stress due to thermal expansion in a high-temperature environment, a 5 mm expansion gap is reserved between two adjacent scrapers 22. The expansion gaps between the scrapers 22 on the two groups of scraper devices 2 are staggered by 100 mm to avoid missing scraping.

[0061] In this embodiment, the scraper device 2 is composed of a support beam 211, a scraper 22, a connecting plate 23, a high-pressure water pipe 24, a nozzle 25, a fastener 26, a fixing plate 27 and a column 212. The support beam 211 (including the channel steel 2111, the gusset plate 2112, and the baffle 2113) is made of heat-resistant stainless steel. The channel steel 2111 is composed of two 12# channel steels arranged opposite to each other, and the edge spacing of the wing plates of the channel steel is 50mm. The gusset plate 2112 has a length of 150mm, a width of 150mm, and a thickness of 10mm. The gusset plate 2112 is fixed to the outer side of the wing plates of the two channel steels 2111 at the end of the nozzle 25, and the arrangement spacing of the gusset plates 2112 is 350mm. The baffle 2113 has a length of 8000mm, a width of 150mm, and a thickness of 10mm. The baffle 2113 is fixed to the outer side of the wing plates of the two channel steels 2111 at the end without the nozzle 25. Baffle 2113 completely encloses one side of support beam 211. A gusset plate 2112 partially encloses the other side of support beam 211. Channel steel 2111, gusset plate 2112, and baffle 2113 form a frame-shaped, three-dimensional space around support beam 211. The partially enclosed opening on one side is used for water spraying from nozzle 25. High-pressure water pipe 24 and nozzle 25 are placed inside support beam 211 to protect them from high-temperature corrosion from molten slag. Support beam 211 provides support for scraper 22. Both ends of support beam 211 extend outside cylinder 11 and are welded to columns 212, which are in turn welded to base bracket 15.

[0062] In this embodiment, the scraper 22 forms an angle of 60° with the normal direction of the inner wall of the cylinder 11. The blade of the scraper 22 is parallel to the inner wall of the cylinder 11, and the distance between the blade of the scraper 22 and the inner wall of the cylinder 11 is 5 mm. The high-pressure water pipe 24 is threadedly connected to the nozzle 25 to facilitate maintenance and replacement. The high-pressure water sprayed by the nozzle 25 is fan-shaped, and the water spray pressure is 1.0 MPa. The spray direction of the nozzle 25 is directly facing the blade of the scraper 22, which can flush away the secondary condensed slag on the scraper 22 and cool the scraper 22. At the same time, by directly flushing the inner wall of the anti-stick coating 113 of the cylinder 11, the small particles of condensed slag remaining after scraping can be cleaned.

[0063] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An anti-adhesion molten slag granulation cylinder, characterized in that: It includes a rotary molten slag granulating cylinder and a scraper device; the rotary molten slag granulating cylinder is composed of a cylinder, a transmission device, a supporting roller device, a blocking wheel device and a base bracket, the cylinder is arranged at an angle, and is jointly supported by the transmission device and the supporting roller device arranged on the base bracket; the inner wall of the cylinder is provided with an anti-stick coating; the scraper device includes a support frame, a scraper, a high-pressure water pipe and a nozzle, the support frame is composed of a support beam and a column, the support beam is arranged along the axial length of the cylinder, and the two ends of the support beam extend out of the cylinder and are connected to the base bracket through the columns; the high-pressure water pipe is arranged in the support beam, one end of the high-pressure water pipe is connected to the external high-pressure water delivery pipeline, and the high-pressure water pipe located in the cylinder is provided with multiple nozzles along the longitudinal direction; the support beam located in the cylinder is provided with multiple scrapers side by side along the longitudinal direction, and the scraper blades are close to the inner wall of the cylinder; the spraying direction of the nozzle is toward the scraper blade.

2. The anti-sticking molten slag granulating drum according to claim 1, characterized in that: The angle between the axis of the cylinder and the horizontal plane is 6° to 10°; a transmission device, a blocking wheel device and a supporting wheel device are arranged in sequence from the lower end to the upper end of the cylinder.

3. The anti-sticking molten slag granulating drum according to claim 1, characterized in that: The cylinder body is composed of a steel cylinder, a heat-insulating castable layer and an anti-stick coating in sequence from outside to inside.

4. The anti-sticking molten slag granulating drum according to claim 1, characterized in that: The support beam is composed of channel steel, baffle and gusset plate; two channel steels are arranged opposite to each other, one side of the two channel steels is connected by the baffle plate, and the other side is connected by the gusset plate, the gusset plates are arranged at intervals along the longitudinal direction of the support beam, and the nozzle is arranged in the gap between the two corresponding gusset plates.

5. The anti-sticking molten slag granulating drum according to claim 1, characterized in that: The high-pressure water pipe is arranged in the middle of the support beam through a fixing plate; the high-pressure water pipe and the nozzle are connected by threads, and the nozzles are arranged at a spacing of 100 to 300 mm.

6. The anti-sticking molten slag granulating drum according to claim 1, characterized in that: The scraper device consists of a connecting plate, a fastener and a scraper; the scraper is connected to the support beam through the corresponding connecting plate, and the scraper and the connecting plate are connected through the fastener.

7. The anti-sticking molten slag granulating drum according to claim 1, characterized in that: The scraper devices are 2 to 4 groups, which are arranged on both sides of the cylinder or spaced apart along the circumference of the cylinder; the scrapers on each group of scraper devices are staggered along the axial direction of the cylinder.

8. The anti-sticking molten slag granulating drum according to claim 1, characterized in that: The angle between the scraper and the normal direction of the inner wall of the cylinder is 45° to 60°; the blade of the scraper is parallel to the inner wall of the cylinder, and the distance between the two is 5 to 10 mm.

9. A method for operating the anti-sticking molten slag granulating drum according to any one of claims 1 to 8, characterized in that: The process includes the following: S1. Start the transmission device to drive the cylinder to rotate, and high-pressure air and molten slag enter the cylinder at the same time; S2, high-pressure air breaks up the molten slag and condenses it into small particles. The condensed slag falls to the bottom of the cylinder and is discharged from the cylinder under the rotation of the cylinder; S3. During the process of breaking up the molten slag, some of the unsolidified slag adheres to the inner wall of the cylinder. During the rotation of the cylinder, the scraper is used to clean the slag adhered to the inner wall of the cylinder. Since the inner wall of the cylinder is provided with an anti-stick coating, the slag is easily removed by the scraper, and the scraped slag is discharged by the rotation of the cylinder. During the scraping process, the high-pressure water pipe intermittently supplies water. The high-pressure water sprayed by the nozzle regularly flushes the inner wall of the cylinder near the scraper blade, removing the fine slag particles remaining after scraping and washing away the slag adhered to the scraper blade. The back-splashing high-pressure water cools the scraper. S5. The high-pressure water sprayed by the nozzle and the steam generated by absorbing heat during the slag flushing process are discharged from the cylinder together with the condensed slag, completing the molten slag granulation process.

10. The method for operating the anti-sticking molten slag granulating drum according to claim 9, characterized in that: The high-pressure water sprayed from the nozzle is fan-shaped, and the spraying pressure is 0.8-1.0 MPa.

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