A system and method for on-site screening, crushing and closed transportation of fly ash

Abstract

The present invention discloses a system and method for on-site screening, crushing and closed conveying of ash. The system is arranged between a converter boiler and a flash furnace. A first screening and crushing unit is arranged below the ash outlet of the converter boiler, and the discharge port of the first screening and crushing unit is connected to one end of a collection unit for the converter boiler ash; a second crushing unit is arranged below the ash outlet of the flash furnace boiler; the converter boiler ash collection unit and the second crushing unit are both connected to one end of a ash merging unit through a pipeline, and the other end of the ash merging unit is connected to one end of a secondary crushing and conveying unit through a pipeline, and the other end of the secondary crushing and conveying unit is connected to a dust collecting scraper. The system of the present invention has a simple structure, a reasonable design, and is easy to use. The overall sealing treatment eliminates the need for forklifts to transport and manual lifting of ash, eliminates the phenomenon of ash spilling and dust, saves electricity, and reduces labor costs.

Description

Technical Field

[0001] The present invention relates to on-site screening, crushing and closed conveying technology for fly ash from flash furnaces and converter boilers in the copper smelting industry, and in particular to a system and method for on-site screening, crushing and closed conveying of fly ash. Background Art

[0002] During the copper smelting process, the soot produced by the flash furnace, converter boiler and converter spherical flue is collected in an ash can and transported by a forklift to the ground of the C smoke treatment system. The 2-ton ash can is then manually lifted by an electric hoist to the ash treatment system platform 12 meters above the ground. Ash with a particle size less than 200 mm is crushed by a double roller, screened by a vibrating screen, and pulverized by a ball mill, and then transported to the flash furnace ash bin through a negative pressure conveying system and enters the flash furnace for smelting. Ash with a particle size greater than 200 mm is lifted down from the ash can by an electric hoist and returned to the converter furnace. The following problems exist in the process of collecting, transferring, crushing and transporting ash: ash is scattered and dust is raised during the transfer process, which pollutes the ground and increases the intensity of cleaning; ash is transferred by forklifts, and some routes occupy the passage of slag trucks, posing a traffic safety hazard; during the lifting process of ash, the lifting height of the 2-ton ash can reaches 12 meters, which poses a risk of lifting injury; the total rated power of the existing ash handling equipment reaches 500KW, and the actual operating power reaches 320KW, which is a high-consumption and low-energy equipment; a large number of ash cans are placed at the door of the C smoke dust treatment system, affecting the appearance of the scene. Summary of the Invention

[0003] The purpose of the present invention is to overcome the shortcomings of the existing technology and provide a method for on-site screening, crushing and closed transportation of fly ash, so as to solve the problems of fly ash scattering, dust and high energy consumption of equipment in the existing fly ash treatment process, and eliminate the traffic and lifting safety hazards in the process of forklift transportation and manual lifting of fly ash.

[0004] In order to achieve the above-mentioned object, the technical solution adopted by the present invention is: a system for on-site screening, crushing and closed conveying of fly ash, which is arranged between the converter boiler and the flash furnace, and comprises:

[0005] The first screening and crushing unit is used to collect the fly ash from the converter boiler and screen out the oversized particles in the fly ash, and perform the first crushing of the large particles of the screened fly ash;

[0006] The converter boiler soot collection unit is used to collect the crushed converter boiler soot and transport the collected converter boiler soot to the soot merging unit;

[0007] The second crushing unit is used to perform the first crushing of large particles of fly ash in the collected flash furnace boiler fly ash;

[0008] The ash merging unit is used to collect the crushed flash furnace boiler ash and converter boiler ash and transport them to the secondary crushing and conveying unit;

[0009] The secondary crushing and conveying unit is used to crush the collected flash furnace boiler ash and converter boiler ash to the set particle size again, and collect and mix the crushed ash for subsequent processing;

[0010] Wherein, the first screening and crushing unit is arranged below the ash outlet of the converter boiler, and the discharge port of the first screening and crushing unit is connected to one end of the ash collection unit of the converter boiler;

[0011] The second crushing unit is arranged below the ash outlet of the flash furnace boiler;

[0012] The converter boiler ash collection unit and the second crushing unit are both connected to one end of the ash merging unit through a pipeline, the other end of the ash merging unit is connected to one end of the secondary crushing and conveying unit through a pipeline, and the other end of the secondary crushing and conveying unit is connected to the smoke collecting scraper of the flash furnace.

[0013] Furthermore, the first screening and crushing unit includes: a grid screen, a first ashtray, a first three-way flap valve and a crusher;

[0014] Among them, the ash outlet of the converter boiler is connected to the upper end of the inverted Y-shaped connecting pipe, one end of the lower end of the inverted Y-shaped connecting pipe is connected to the first ashtray, the grid screen is arranged at the bifurcation of the inverted Y-shaped connecting pipe at a certain inclination angle, and one end of the lower end of the inverted Y-shaped connecting pipe is connected to one end of the first three-way flap valve, and the other two ends of the first three-way flap valve are respectively connected to the first ashtray and the crusher.

[0015] Furthermore, the first crusher is a jaw crusher with a crushing particle size of ≤30 mm.

[0016] Furthermore, the converter boiler soot collection unit comprises: a first scraper, a spherical flue scraper and a first rotary valve;

[0017] Among them, one end of the first rotary valve is connected to the discharge port of the first scraper, and the other end is connected to one end of the spherical flue scraper through a pipeline.

[0018] Furthermore, the second crushing unit includes: a radiation scraper, a second three-way flap valve, a second crusher, a second rotary valve and a slope scraper;

[0019] The radiation scraper is arranged below the ash outlet of the flash furnace boiler, and a second three-way flap valve, a second crusher and a second rotary valve are sequentially connected below the radiation scraper.

[0020] One of the material ports of the second three-way flap valve and the second rotary valve are connected to the slope scraper through pipelines.

[0021] Furthermore, the second crusher is a hammer crusher.

[0022] Furthermore, the ash merging unit includes: a bucket elevator, a bucket elevator scraper, a cross scraper, an intermediate bin and a third rotary valve;

[0023] In which, the bucket elevator is arranged at the discharge port of the spherical flue scraper, and the bucket elevator is connected to the bucket elevator scraper, the bucket elevator scraper is connected to one end of the cross scraper, and the other end of the cross scraper is connected to the intermediate bin; the third rotary valve is provided below the intermediate bin, and the third rotary valve is connected to the slope scraper.

[0024] Furthermore, the secondary crushing and conveying unit includes a smoke fan, a third three-way flap valve, a secondary crusher, a screw machine, a smoke collection scraper and a second ashtray;

[0025] The third three-way flap valve is arranged at the lower end of the head of the dust collecting scraper, and the dust blower, the secondary crusher and the second ashtray are all connected to the third three-way flap valve through pipelines;

[0026] One end of the spiral machine is connected to the discharge port of the secondary crusher, and the other end is connected to the smoke and dust collecting scraper, and the smoke and dust collecting scraper is connected to the ash bin.

[0027] Furthermore, the secondary crusher is a four-roll crusher with a crushing particle size of less than 2 mm.

[0028] Another object of the present invention is to provide a method for on-site transportation of fly ash using the above-mentioned system, the method specifically comprising the following steps:

[0029] S1) The fly ash generated by the converter boiler falls to the first screening and crushing unit through the ash discharge, and the oversized particles larger than 200 mm in the fly ash are removed and collected, and the large particles in the screened fly ash are crushed for the first time;

[0030] S2) The converter boiler ash collection unit collects the crushed ash and transports it to the ash merging unit;

[0031] S3) The second crushing unit performs a first crushing on the collected flash furnace boiler ash and the large particles of the ash;

[0032] S4) the ash merging unit collects the processed flash furnace boiler ash and converter boiler ash and transports them to the secondary crushing and transporting unit;

[0033] S5) The secondary crushing and conveying unit crushes the flash furnace boiler ash and the converter boiler ash again after the collection, and collects the crushed ash.

[0034] The beneficial effects of the present invention are: by adopting the above technical scheme, the system design of the present invention is reasonable, the original ash handling system is eliminated, the on-site screening, crushing and closed transportation of ash from flash furnaces and converter boilers are achieved, the work of forklift reversing, manual ash handling and the like is eliminated, the cost of labor and forklift use is saved, the number of ash supervision and handling personnel is reduced by 4, the forklift usage fee is reduced by 200,000 yuan / year, the ash spilling and dust phenomenon is eliminated, the scene pollution is reduced, the road traffic safety is improved, and the safety hazards such as lifting injuries are avoided. The actual operating power of the new equipment is greatly reduced compared with the original ash handling system equipment, saving 750,000 kWh / year of electricity consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic structural diagram of a system for on-site screening, crushing and closed conveying of fly ash according to the present invention;

[0036] Figure 2 This is a schematic structural diagram of the first screening and crushing unit of the system of the present invention;

[0037] Figure 3 This is a schematic structural diagram of a converter boiler soot collection unit of the system of the present invention;

[0038] Figure 4 Schematic diagram of the structure of the second crushing unit of the system of the present invention;

[0039] Figure 5 Schematic diagram of the structure of the soot merging unit of the system of the present invention;

[0040] Figure 6 It is a structural schematic diagram of the secondary crushing and conveying unit of the present invention;

[0041] In the picture:

[0042] 10. First screening and crushing unit, 11. Boiler scraper, 12. Grid screen, 13. First ashtray, 14. First three-way flap valve, 15. First crusher, 20. Converter boiler ash collection unit, 21. New spherical flue scraper, 22. First scraper, 23. First rotary valve, 30. Second crushing unit, 31. Radiation scraper, 32. Second three-way flap valve, 33. Second crusher, 34. Second rotary valve, 35. Inclined scraper, 40. Ash collection unit, 41. Bucket elevator, 42. Bucket elevator scraper, 43. Cross-scraper, 44. Intermediate bin, 45. Third rotary valve, 50. Secondary crushing and conveying unit, 51. Dust fan, 52. Third three-way flap valve, 53. Secondary crusher, 54. Screw conveyor, 55. Dust collecting scraper, 56. Flash furnace ash bin, 57. Second ash tank. DETAILED DESCRIPTION

[0043] The technical solution of the present invention is further described in detail below with reference to the accompanying drawings.

[0044] like Figure 1 As shown, the present invention provides a system for on-site screening, crushing and closed conveying of fly ash, which is arranged between a converter boiler and a flash furnace, and comprises:

[0045] The first screening and crushing unit 10 is used to collect the fly ash from the converter boiler and screen out the oversized particles in the fly ash, and perform the first crushing of the screened large particles of fly ash;

[0046] The converter boiler soot collection unit 20 is used to collect the crushed converter boiler soot and transport the collected converter boiler soot to the soot merging unit;

[0047] The second crushing unit 30 is used to perform a first crushing of large particles collected from the flash furnace boiler ash;

[0048] The ash merging unit 40 is used to collect the crushed flash furnace boiler ash and converter boiler ash and transport them to the secondary crushing and conveying unit;

[0049] The secondary crushing and conveying unit 50 is used to crush the collected flash furnace boiler ash and converter boiler ash to a set particle size and collect the crushed ash;

[0050] The first screening and crushing unit 10 is arranged below the ash outlet of the converter boiler, and the discharge port of the first screening and crushing unit 10 is connected to one end of the ash collection unit 20 of the converter boiler;

[0051] The second crushing unit 30 is arranged below the ash outlet of the flash furnace boiler;

[0052] The converter boiler ash collection unit 20 and the second crushing unit 30 are both connected to one end of the ash merging unit 40 through a pipeline, and the other end of the ash merging unit 40 is connected to one end of the secondary crushing and conveying unit 50 through a pipeline, and the other end of the secondary crushing and conveying unit 50 is connected to the smoke collecting scraper 55.

[0053] The first screening and crushing unit 10 includes: a grid screen 12, a first ashtray 13, a first three-way flap valve 14 and a first crusher 15;

[0054] Among them, the ash outlet of the converter boiler (the ash outlet is provided with a boiler scraper 11) is connected to the upper end of the inverted Y-shaped connecting pipe, one end of the lower end of the inverted Y-shaped connecting pipe is connected to the first ashtray 13, the grid screen 12 is arranged at the bifurcation of the inverted Y-shaped connecting pipe at a certain inclination angle, and one end of the lower end of the inverted Y-shaped connecting pipe is connected to one end of the first three-way flap valve 14, and the other two ends of the first three-way flap valve 14 are respectively connected to the first ashtray 13 and the first crusher 15.

[0055] The first crusher 15 is a jaw crusher with a crushing particle size of ≤30 mm.

[0056] The converter boiler ash collection unit 20 includes: a first scraper 22, a spherical flue scraper 23 and a first rotary valve 30;

[0057] One end of the first rotary valve 30 is connected to the discharge port of the first scraper 21 , and the other end is connected to one end of the spherical flue scraper 23 through a pipeline.

[0058] The second crushing unit 30 includes: a radiation scraper 31, a second three-way flap valve 32, a second crusher 33, a second rotary valve 34 and a slope scraper 35;

[0059] The radiation scraper 31 is provided below the ash outlet of the flash furnace boiler, and a second three-way flap valve 32, a second crusher 33 and a second rotary valve 34 are provided below the radiation scraper 31, which are connected in sequence.

[0060] One of the material ports of the second three-way flap valve 32 and the second rotary valve 34 are connected to the slope scraper 35 through pipelines.

[0061] The second crusher 33 is a hammer crusher.

[0062] The ash merging unit 40 includes: a bucket elevator 41, a bucket elevator scraper 42, a cross scraper 43, an intermediate bin 44 and a third rotary valve 45;

[0063] In which, the bucket elevator is arranged at the discharge port of the spherical flue scraper, and the bucket elevator is connected to the bucket elevator scraper, the bucket elevator scraper is connected to one end of the cross scraper, and the other end of the cross scraper is connected to the intermediate bin; the third rotary valve is provided below the intermediate bin, and the third rotary valve is connected to the slope scraper.

[0064] The secondary crushing and conveying unit 50 includes a dust blower 51, a third three-way flap valve 52, a secondary crusher 53, a screw conveyor 54, a dust collecting scraper 55 and a second ashtray 57;

[0065] The third three-way flap valve 52 is provided at the lower end of the head of the dust collecting scraper 55, and the dust blower 51, the secondary crusher 53 and the second ashtray 57 are all connected to the third three-way flap valve 52 through pipes.

[0066] One end of the screw conveyor 54 is connected to the discharge port of the secondary crusher 53 , and the other end is connected to the smoke dust collecting scraper 55 , and the smoke dust collecting scraper 55 is connected to the ash bin 55 .

[0067] The secondary crusher 53 is a four-roller crusher with a crushing particle size of less than 2 mm.

[0068] A method for on-site transportation using the above system, the method specifically comprising the following steps:

[0069] S1) The fly ash generated by the converter boiler falls onto the first screening and crushing unit 10 through the ash discharge, and particles larger than 200 mm in the fly ash are screened and collected, and the large particles in the screened fly ash are first crushed;

[0070] S2) The converter boiler ash collecting unit 20 collects the crushed ash and transports it to the ash merging unit 40;

[0071] S3) The second crushing unit 30 performs a first crushing on the large particles of the collected flash furnace boiler ash;

[0072] S4) The ash merging unit 40 collects the processed flash furnace boiler ash and converter boiler ash and transports them to the secondary crushing and transporting unit 50;

[0073] S5) The secondary crushing and conveying unit 50 crushes the flash furnace boiler ash and the converter boiler ash again after the collection, and collects the crushed ash.

[0074] Example:

[0075] The present invention provides a method for on-site screening, crushing and closed conveying of fly ash, which Figure 1As shown, the present invention provides a system for on-site screening, crushing and closed transportation of fly ash. The on-site screening, crushing and closed transportation method of fly ash includes screening and crushing 10 of fly ash from a converter boiler, collecting 20 of fly ash from a converter boiler, crushing 30 of fly ash from a flash furnace boiler, combining 40 of fly ash from a converter and a flash furnace boiler, and secondary crushing and transportation 50 of fly ash.

[0076] like Figure 2 As shown, the screening and crushing 10 of the converter boiler ash is described. Taking one of the three converter boilers as an example, a grid screen 12 is set at the ash outlet under the original converter boiler scraper 11. The grid screen 12 has a diameter of 200*200mm. The grid screen 12 is installed at an angle of 45°-60° to the discharge port. Ash with a particle size greater than or equal to 200mm enters the first ash tank 13, and ash less than 200mm enters the crushing process. A first three-way flap valve 14 is added between the bottom of the grid screen 12 and the first ash tank 13, and a first crusher 15 is installed below the first three-way flap valve 14 to control the discharge particle size below 30mm. Due to the addition of the first three-way flap valve 14, the ash has two destinations, one is to enter the first crusher 15 to complete the first level of crushing, and the other is to enter the first ash tank 13. When the equipment fails, it is used as an emergency channel.

[0077] like Figure 3 As shown, the collection 20 of the converter boiler ash is described. Taking one of the three converter boilers as an example, the three scrapers of the original spherical flue are merged into a new spherical flue scraper 21. After the converter boiler ash is jaw crushed, it passes through the first scraper 22 and the first rotary valve 23 and merges with the spherical flue ash into the new spherical flue scraper 21.

[0078] like Figure 4 As shown, the ash crushing 30 of the flash furnace boiler is performed by removing the ash bin below the scraper 31 of the original flash furnace boiler radiation part, and sequentially adding a second three-way flap valve 32, a second crusher 33, and a second rotary valve 34, so that the ash has two destinations: one is to enter the second crusher 33 to complete the first-level crushing, and then enter the dust slope scraper 35 through the second rotary valve 34 after crushing; the other is to directly enter the dust slope scraper 35, which is used as an emergency channel when the equipment fails.

[0079] like Figure 5As shown, the ash from the converter and the flash furnace boiler is merged 40. The ash from the new scraper 21 of the converter spherical flue is lifted by a bucket elevator 41 and then enters the bucket elevator scraper 42. A skybridge is designed next to the existing pipe network corridor for installing a cross-scraper 43. The converter ash is transported from the top of the slag car channel to the vicinity of the head of the original flash furnace radiation part scraper 31 through the cross-scraper 43. An ash intermediate bin 44 is added below the cross-scraper 43, and a third rotary valve 45 is installed below the intermediate bin 44. The ash from the converter is collected in the intermediate bin 44, and after merging with the flash furnace ash through the third rotary valve 45, it enters the smoke slope scraper 35.

[0080] like Figure 6 As shown, the secondary crushing and transportation 50 of the ash, the ash after the converter and the flash furnace boiler are combined is transported to the original B smoke dust slope scraper 35 head, and a part of the fine ash is sucked away by the original B smoke dust fan 51. A third three-way flap valve 52, a secondary crusher 53, and a screw machine 54 are successively added below the original B smoke dust slope scraper 35 head, so that the ash has two destinations. One is that the remaining ash enters the secondary crusher 53 to complete the secondary crushing, and the crushed particle size is less than 2mm. The crushed ash is transported to the original A smoke dust collecting scraper 55 through the screw machine 54, and after merging with the A smoke, it is transported to the original flash furnace ash bin 56 through positive pressure. The other is directly entering the second ash tank 57, which is used as an emergency channel when the equipment fails.

[0081] The description of the above embodiments is only used to help understand the method of this application and its core idea; at the same time, for those skilled in the art, according to the idea of ​​this application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as limiting the present application.

[0082] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different nouns to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" and "comprising" mentioned throughout the specification and claims are open-ended terms, so they should be interpreted as "including / including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve the technical problems within a certain error range and basically achieve the technical effects. The subsequent description in the specification is a preferred embodiment of the present application, but the description is for the purpose of illustrating the general principles of the present application, and is not intended to limit the scope of the present application. The scope of protection of the present application shall be determined by the definition of the appended claims.

[0083] It should also be noted that the terms "include," "comprises," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a product or system comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such product or system. In the absence of further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the product or system comprising the element.

[0084] It should be understood that the term "and / or" as used herein is merely a description of the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0085] The above description shows and describes several preferred embodiments of the present application. However, as previously mentioned, it should be understood that the present application is not limited to the form disclosed herein and should not be construed as excluding other embodiments. Instead, the present application can be used in various other combinations, modifications, and environments and can be modified within the scope of the application concept described herein through the above teachings or technology or knowledge in the relevant field. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present application should be protected by the claims appended hereto.

Claims

1. A system for on-site screening, crushing and closed conveying of fly ash, characterized in that: The system is arranged between the converter boiler and the flash furnace, and comprises: The first screening and crushing unit is used to collect the fly ash from the converter boiler and screen out the oversized particles in the fly ash, and perform the first crushing of the large particles of the screened fly ash; The converter boiler soot collection unit is used to collect the crushed converter boiler soot and transport the collected converter boiler soot to the soot merging unit; The second crushing unit is used to perform the first crushing of large particles of fly ash in the collected flash furnace boiler fly ash; The ash merging unit is used to collect the crushed flash furnace boiler ash and converter boiler ash and transport them to the secondary crushing and conveying unit; The secondary crushing and conveying unit is used to crush the collected flash furnace boiler ash and converter boiler ash to the set particle size again, and collect and mix the crushed ash for subsequent processing; Wherein, the first screening and crushing unit is arranged below the ash outlet of the converter boiler, and the discharge port of the first screening and crushing unit is connected to one end of the ash collection unit of the converter boiler; The second crushing unit is arranged below the ash outlet of the flash furnace boiler; The converter boiler ash collection unit and the second crushing unit are both connected to one end of the ash merging unit through a pipeline, the other end of the ash merging unit is connected to one end of the secondary crushing and conveying unit through a pipeline, and the other end of the secondary crushing and conveying unit is connected to the smoke collecting scraper of the flash furnace; The first screening and crushing unit includes: a grid screen, a first ashtray, a first three-way flap valve and a first crusher; The ash outlet of the converter boiler is connected to the upper end of an inverted Y-shaped connecting pipe, one end of the lower end of the inverted Y-shaped connecting pipe is connected to the first ashtray, the grating is arranged at a certain inclination angle at the bifurcation of the inverted Y-shaped connecting pipe, and one end of the lower end of the inverted Y-shaped connecting pipe is connected to one end of a first three-way flap valve, and the other two ends of the first three-way flap valve are respectively connected to the first ashtray and the crusher; The first crusher is a jaw crusher with a crushing particle size of ≤30mm.

2. The system according to claim 1, wherein: The converter boiler soot collection unit includes: a first scraper, a spherical flue scraper and a first rotary valve; Among them, one end of the first rotary valve is connected to the discharge port of the first scraper, and the other end is connected to one end of the spherical flue scraper through a pipeline.

3. The system according to claim 2, characterized in that The second crushing unit includes: a radiation scraper, a second three-way flap valve, a second crusher, a second rotary valve and a slope scraper; The radiation scraper is arranged below the ash outlet of the flash furnace boiler, and a second three-way flap valve, a second crusher and a second rotary valve are sequentially connected below the radiation scraper. One of the material ports of the second three-way flap valve and the second rotary valve are connected to the slope scraper through pipelines; The second crusher is a hammer crusher.

4. The system according to claim 3, characterized in that The ash merging unit includes: a bucket elevator, a bucket elevator scraper, a cross scraper, an intermediate bin and a third rotary valve; In which, the bucket elevator is arranged at the discharge port of the spherical flue scraper, and the bucket elevator is connected to the bucket elevator scraper, the bucket elevator scraper is connected to one end of the cross scraper, and the other end of the cross scraper is connected to the intermediate bin; the third rotary valve is provided below the intermediate bin, and the third rotary valve is connected to the slope scraper.

5. The system according to claim 1, wherein: The secondary crushing and conveying unit includes a dust blower, a third three-way flap valve, a secondary crusher, a spiral machine, a dust collecting scraper and a second ashtray; The third three-way flap valve is arranged at the lower end of the head of the dust collecting scraper, and the dust blower, the secondary crusher and the second ashtray are all connected to the third three-way flap valve through pipelines; One end of the spiral machine is connected to the discharge port of the secondary crusher, and the other end is connected to the smoke and dust collecting scraper, and the smoke and dust collecting scraper is connected to the ash bin.

6. A method for on-site transportation using the system according to claim 1, characterized in that: The method specifically comprises the following steps: S1) The fly ash generated by the converter boiler falls to the first screening and crushing unit through the ash discharge, where oversized particles larger than 200 mm are removed and collected, and the large particles in the screened fly ash are crushed for the first time; S2) The converter boiler ash collection unit collects the crushed ash and transports it to the ash merging unit; S3) The second crushing unit performs the first crushing of large particles in the collected flash furnace boiler ash; S4) the ash merging unit collects the processed flash furnace boiler ash and converter boiler ash and conveys them to the secondary crushing and conveying unit; S5) the secondary crushing and conveying unit crushes the collected flash furnace boiler ash and converter boiler ash again and collects the crushed ash.

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