Novel high-carbon ferrochrome vibration screening equipment

Abstract

Novel high-carbon ferro-chrome vibration screening equipment belongs to the related technical field of mineral aggregate screening equipment and comprises a material flow dividing device, a flow dividing valve is arranged in the material flow dividing device, the material flow dividing device comprises a first flow dividing path and a second flow dividing path, and the flow dividing valve can be remotely controlled; the second flow dividing path is connected with the vibration screening device, the vibration screening device is used for receiving materials needing to be subjected to vibration screening and conducting vibration screening on the materials, and large-particle materials screened out by the vibration screening device are directly output to participate in production. And small-particle materials and / or powdery materials screened out by the vibrating screening device are / is conveyed to downstream equipment. The material distributing device is arranged, materials are distributed and then subjected to vibration screening treatment through the vibration screening device, and different screened materials are subjected to different follow-up treatment according to requirements, so that the utilization rate of high-carbon ferrochrome is increased, waste of small-particle powder in the high-carbon ferrochrome is avoided, and the production and operation cost is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of mineral screening equipment, and more specifically, to a novel high-carbon ferrochrome vibrating screening equipment. Background Technology

[0002] Steel plants typically use imported bulk high-chromium iron ore, and each batch generally contains more than 10% high-chromium powder. During the traditional steelmaking process, when the high-chromium iron ore is fed into the AOD furnace through the gasification flue, the powder is removed and becomes dust, resulting in waste and increased production costs. Using a vibrating screen to screen the high-chromium iron ore would generate a large amount of dust, which would not only pollute the environment but also pose a significant health hazard to employees. Utility Model Content

[0003] (I) Technical Issues

[0004] Faced with existing technological problems, how to provide an online screening device for high-chromium iron ore that can improve the utilization rate of high-chromium iron ore, thereby reducing production and operating costs and minimizing the impact of dust on the environment and employees, has become an urgent problem to be solved by those skilled in the art.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, this utility model provides a novel high-carbon ferrochrome vibrating screen, which includes:

[0007] A material diversion device is provided, which includes a diversion valve. The material diversion device includes a first diversion path for direct material output and participation in production, and a second diversion path for material output to a vibrating screening process. The diversion valve can be remotely controlled to select the material to be conveyed in the first diversion path and the second diversion path.

[0008] The vibrating screening device is connected to the second diversion path via a chute. The vibrating screening device is used to receive materials that need to be vibrated and screen them. Large particles screened out by the vibrating screening device are directly output to participate in production. Small particles and / or powdery materials screened out by the vibrating screening device are transported to downstream equipment through a pipeline system.

[0009] The downstream equipment includes a silo, which is an elevated structure used to collect small granular materials and / or powdery materials that have been screened out and to discharge them in a controlled manner.

[0010] The conveying system includes a first diversion path connected to the conveying system via a chute, through which materials directly involved in production are output. Additionally, the oversize material after screening by the vibrating screening device is connected to the conveying system via a chute, through which the oversize material is output.

[0011] Preferably, in the novel high-carbon ferrochrome vibrating screen provided by this utility model, the material diversion device includes a diversion device inlet, and a diversion fluid is provided below the diversion device inlet. The diversion fluid has an inverted Y-shaped structure. The upper opening of the diversion fluid is connected to or integrally formed with the diversion device inlet. The lower opening of the diversion fluid is connected to the first diversion path and the second diversion path respectively. The diversion valve is provided inside the diversion fluid.

[0012] Preferably, in the novel high-carbon ferrochrome vibrating screening equipment provided by this utility model, at least two material diversion devices are provided for diverting different materials, and all the material diversion devices are arranged at intervals along the conveying direction of the conveying system; the second diversion paths of all the material diversion devices are connected.

[0013] Preferably, in the novel high-carbon ferrochrome vibrating screening equipment provided by this utility model, the vibrating screening device includes a vibrating screen with screen holes evenly distributed on it, the screen hole diameter being 4.5mm to 5.5mm; the vibrating screen includes a vibrating screening output end and a bottom collection bin, the vibrating screening output end being connected to the conveying system and used to output the screened large particles to the conveying system, and the bottom collection bin being used to collect and transfer the screened small particles and / or powdery materials.

[0014] Preferably, in the novel high-carbon ferrochrome vibrating screen provided by this utility model, the vibrating screen is inclined in the direction perpendicular to the conveying system for conveying materials, with one end of the vibrating screen closer to the conveying system being lower than the other end, and the end of the vibrating screen closer to the conveying system being the vibrating screen output end.

[0015] Preferably, in the novel high-carbon ferrochrome vibrating screen provided by this utility model, the pipeline system includes a first horizontal conveying pipe, in which a spiral conveying device is provided for transverse conveying of the material within the first horizontal conveying pipe. The first horizontal conveying pipe is located below the vibrating screen and above the hopper. The bottom collection hopper has a funnel-shaped structure, with a top opening and a bottom opening. The top opening completely covers the vibrating screen plate from bottom to top. The first horizontal conveying pipe is connected to the bottom opening of the bottom collection hopper through a first vertical pipe, which has a multi-segment structure. The end of the first horizontal conveying pipe is connected to a second vertical pipe, which communicates with the hopper.

[0016] Preferably, the novel high-carbon ferrochrome vibrating screening equipment provided by this utility model further includes a dust removal system. The dust removal system includes a dust removal device, a dust removal conveying pipe, and a dust removal hood for installation at the dust-generating parts of the equipment or the connection between equipment. The dust removal device is a micro-electrostatic dust removal device or a bag filter dust removal device. The dust removal device is used to filter the dust and collect the filtered dust. The dust removal device is connected to the dust removal hood through the dust removal conveying pipe. The dust removal device is connected to the silo and is used to transport the collected dust to the silo.

[0017] Preferably, in the novel high-carbon ferrochrome vibrating screening equipment provided by this utility model, a dust collection bin is provided at the bottom of the dust removal device, and a second horizontal conveying pipe is connected to the bottom opening of the dust collection bin. The dust collection bin has a funnel-shaped structure, and the bottom opening of the dust collection bin is connected to the side wall of the second horizontal conveying pipe near one end. A screw conveying device is provided inside the second horizontal conveying pipe to realize the lateral conveying of the material inside the second horizontal conveying pipe. The other end of the second horizontal conveying pipe is the end, and a third vertical pipe is provided at the end of the second horizontal conveying pipe. The third vertical pipe has a multi-segment structure and is connected to the silo.

[0018] Preferably, the novel high-carbon ferrochrome vibrating screen provided by this utility model further includes a high-pressure purging system. The high-pressure purging system includes a purging nozzle, which is set corresponding to the vibrating screen and is used to purge the vibrating screen with high-pressure airflow before the vibrating screen is started.

[0019] (III) Beneficial Effects

[0020] As described above, this utility model provides a novel high-carbon ferrochrome vibrating screening device. This device includes: a material diversion device with a diversion valve; a first diversion path for direct material output and participation in production; and a second diversion path for material output to the vibrating screening process. The diversion valve is remotely controllable to select between the first and second diversion paths for material transport. A vibrating screening device is also included, with the second diversion path connected to it via a chute. The vibrating screening device receives the required material. The material is subjected to vibratory screening. Large particles screened out by the vibratory screening device are directly output for production, while small particles and / or powdery materials screened out are transported to downstream equipment via a pipeline system. The downstream equipment includes a silo (an elevated structure) for collecting and controlling the discharge of the screened small particles and / or powdery materials; and a conveying system. A first diversion path connects to the conveying system via a chute, which outputs the material directly involved in production. The oversize material after screening by the vibratory screening device also connects to the conveying system via a chute, and is then output. This invention incorporates a material diversion device, allowing the material to be screened to undergo vibratory screening after diversion. Different screened materials undergo different subsequent processing according to requirements, thereby improving the utilization rate of high-carbon ferrochrome, avoiding waste of small particles and powder in high-carbon ferrochrome, and reducing production and operating costs. Attached Figure Description

[0021] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. Wherein:

[0022] Figure 1 This is a simplified structural diagram of the side of the novel high-carbon ferrochrome vibrating screen in this embodiment of the invention;

[0023] Figure 2 This is a simplified structural diagram of the front of the novel high-carbon ferrochrome vibrating screening device in this embodiment of the present invention;

[0024] Figure 3 This is a simplified structural diagram of the dust removal device in the novel high-carbon ferrochrome vibrating screening equipment in this utility model embodiment;

[0025] Figure 4 This is a process flow diagram of the novel high-carbon ferrochrome vibrating screening equipment in the embodiments of this utility model.

[0026] Figures 1 to 3 In the diagram, the correspondence between component names and reference numerals is as follows:

[0027] Material diversion device 1, first diversion path 2, second diversion path 3, vibrating screen device 4, silo 5, conveying system 6, bottom collection bin 7, first horizontal conveying pipe 8, dust removal device 9.

[0028] Dust collection bin 10, second horizontal conveying pipe 11. Detailed Implementation

[0029] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Various examples are provided by way of explanation of the present invention and not by way of limitation. In fact, those skilled in the art will recognize that modifications and variations can be made to the present invention without departing from the scope or spirit of the invention. For example, a feature shown or described as part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desirable that the present invention encompass such modifications and variations that fall within the scope of the appended claims and their equivalents.

[0030] In the description of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. The terms "connected" and "linked" used in this utility model should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; they can refer to a direct connection or an indirect connection through intermediate components. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0031] Please refer to Figures 1 to 4 ,in, Figure 1 This is a simplified structural diagram of the side of the novel high-carbon ferrochrome vibrating screen in this embodiment of the invention; Figure 2 This is a simplified structural diagram of the front of the novel high-carbon ferrochrome vibrating screening device in this embodiment of the present invention; Figure 3 This is a simplified structural diagram of the dust removal device in the novel high-carbon ferrochrome vibrating screening equipment in this utility model embodiment; Figure 4 This is a process flow diagram of the novel high-carbon ferrochrome vibrating screening equipment in the embodiments of this utility model.

[0032] This utility model provides a novel high-carbon ferrochrome vibrating screening device. The novel high-carbon ferrochrome vibrating screening device provided by this utility model is used in conjunction with an existing belt conveyor system (the existing belt conveyor system is equipped with two belts, one for conveying limestone and the other for high-carbon ferrochrome ore). It can achieve screening of high-carbon ferrochrome ore without affecting the original raw material transfer channel, and can also achieve functions such as collection, transfer, storage and dust removal of the screened powder.

[0033] In this utility model, the novel high-carbon ferrochrome vibrating screening equipment comprises the following components:

[0034] 1. Material Diversion Device 1. A material diversion device 1 is used to divert one type of material (either limestone or high-carbon chromite ore). It can divert large particles that do not require screening (for example, in a batch of high-carbon chromite ore, the material at the top of the stockpile is mainly large particles, with virtually no small particles or powdery material, and can directly participate in production without screening) from materials that require screening (for example, the material at the bottom of a stockpile of high-carbon chromite ore, which contains both large particles and a large amount of small particles and powdery material). (The material conveying is diverted according to whether screening is required). In this utility model, a diversion valve is provided in the material diversion device 1 to divert the material conveying. The material diversion device 1 includes a first diversion path 2 for direct output of material to participate in production, and a second diversion path 3 for output of material to the screening process. Specifically, the material diversion device 1 is made of metal sheet. Specifically, the material diversion device 1 includes a diversion device inlet, which is a vertically arranged cylindrical structure, which can be either a rectangular or round cylinder. An opening is provided at the top of the diversion device inlet (to facilitate material entry, a hopper device can be installed at the opening). This opening structure is used for material entry (connecting to an existing belt conveyor system; material conveyed by the belt conveyor system enters the diversion device inlet through the top opening). Vertically downwards, below the diversion device inlet, is a diversion fluid with two branches. A diversion valve is installed within the diversion fluid; the diversion valve is a diversion valve with remote control function, allowing for remote switching between the two branches. In this invention, the material distributor has an inverted Y-shaped structure with one top opening and two bottom openings. The top opening communicates with the two bottom openings. A flow divider valve is installed within the material distributor, allowing for individual communication between the top opening and the two bottom openings. The top opening of the material distributor is connected to the feed inlet of the separation device, or the top opening of the material distributor and the feed inlet of the flow divider are integrated. The bottom openings of the material distributor are connected to the first flow divider path 2 and the second flow divider path 3, respectively. The first flow divider path 2 is used for the output of large particles, and the second flow divider path 3 is used for the output of materials requiring screening. In one embodiment of this invention, the material distribution device 1 is positioned at its highest point; therefore, this invention employs a large-angle belt conveyor system to transport materials to the material distribution device 1. Meanwhile, the present invention can also set up a frame according to the structure of the material diversion device 1, which can realize the stable installation of the material diversion device 1 on the building foundation and the firm installation of the material diversion device 1 (by suspending the material diversion device 1, it is convenient to set the tilt angle of the first diversion path 2 and the second diversion path 3).In the prior art, the materials include two types, namely limestone and high-carbon chromite ore. Therefore, in this utility model, at least two material diversion devices 1 are provided for diverting different materials. When multiple material diversion devices 1 are provided, all material diversion devices are arranged at intervals along the conveying direction of the conveying system, and the second diversion paths 3 of all material diversion devices 1 are connected.

[0035] 2. Vibrating Screening Device 4. The vibrating screening device 4 is an industrial vibrating screening device used for screening mineral materials. In this utility model, the vibrating screening device 4 includes a vibrating screen (the vibrating screen has screen holes evenly distributed on it, with a screen hole diameter of 4.5mm to 5.5mm). The material to be screened is conveyed to the vibrating screening device 4 and dispersed onto the vibrating screen. The vibrating screen is driven by a power device to vibrate. Materials with larger diameters remain on the vibrating screen, while materials with smaller diameters or powdery materials pass through the vibrating screen. In this way, the vibrating screening device 4 achieves the screening of materials. For a vibrating screen, the vibrating screen includes a vibrating screening output end (during the vibrating screening process, the material remaining on the vibrating screen will flow in an orderly manner toward the vibrating screening output end under the vibration of the vibrating screen until it is output). A bottom collection bin 7 is set at the bottom of the vibrating screen. The vibrating screening output end is connected to the conveying system 6 (connected through a chute device) and is used to output the large particles (oversize material, i.e., material with a larger diameter) screened out to the conveying system 6. The bottom collection bin 7 is used to collect and transfer the small particles and / or powdery materials (undersize material, i.e., material that leaks from the vibrating screen through vibration) screened out. In this invention, the vibrating screen is inclined. Specifically, the vibrating screen is inclined in the direction perpendicular to the conveying system for conveying materials. That is, the end of the vibrating screen closest to the conveying system is inclined toward the conveying system, and the end of the vibrating screen closest to the conveying system is the lower end, i.e., the vibrating screening output end. The inclined setting of the vibrating screen allows larger diameter materials remaining on the vibrating screen to "flow" more smoothly to the vibrating screening output end. This invention also includes a chute for connecting the vibrating screen and the conveying system.

[0036] The vibrating screen is connected to the second diversion path 3 (connection can be achieved through a chute device) to receive materials that need to be vibrated and screen them. Large particles (materials with larger diameters screened out from the materials that need to be screened) screened out by the vibrating screen device 4 are directly output to participate in production. Small particles (materials with smaller diameters screened out from the materials that need to be screened) and / or powdery materials screened out by the vibrating screen device 4 are transported to downstream equipment through the pipeline system.

[0037] 3. Silo 5. Silo 5 is made of sheet metal and has an overall funnel-shaped structure. Silo 5 is suspended by a metal frame, and its bottom is equipped with an electric gate for collecting and controlling the discharge of small granular and / or powdery materials from the screened material (controlled by the control room). The top of silo 5 has an opening that connects to the end of each vertical pipe in the piping system for the input of the screened small granular and powdery materials. The materials are stored in silo 5 and, after the electric gate is opened, can be transported to downstream processes by transfer equipment (e.g., a transfer vehicle).

[0038] 4. Conveying System 6. Conveying System 6 connects to the first diversion path 2 and is used to output large particles from the diversion and / or screening processes for production. Conveying System 6 uses a belt conveyor to directionally and specifically output large particles.

[0039] 5. Piping System. The piping system includes a first horizontal conveying pipe 8, within which a screw conveyor is installed for lateral conveying of materials. The first horizontal conveying pipe 8 is located below the vibrating screen 4 and above the hopper 5. The first horizontal conveying pipe 8 is connected to the bottom collection hopper 7 via a first vertical pipe. A second vertical pipe is connected to the end of the first horizontal conveying pipe 8, and the second vertical pipe communicates with the hopper 5. The main structure of the piping system is a circular pipe. No conveying device is installed inside the vertical pipe; materials fall freely within the pipe due to gravity. The horizontal pipe is horizontally positioned for lateral material conveying, and a screw conveyor is installed within the horizontal pipe to achieve lateral material conveying. In this invention, the specific layout of the piping system is not specifically limited, as long as point-to-point material conveying is achieved.

[0040] 6. Dust Removal System. The dust removal system is used to collect and remove dust. The system includes a dust removal device 9, a dust collection conveying pipe, and a dust hood installed at dust-generating points on equipment or at connections between equipment. The dust removal device 9 collects dust and is connected to the dust hood via the dust collection conveying pipe. It is also connected to the hopper 5 to transport the collected dust into the hopper 5. A dust collection bin 10 is located at the bottom of the dust removal device 9. A second horizontal conveying pipe 11 is connected to the bottom opening of the dust collection bin 10. A screw conveyor is installed inside the second horizontal conveying pipe 11 to achieve lateral conveying of materials within it. The end of the second horizontal conveying pipe 11 is connected to the hopper 5. Specifically, the dust removal device 9 is a micro-electrostatic dust collector or a bag filter dust collector. For the dust removal system, this utility model does not limit the specific structure or quantity of the dust removal hood and dust removal conveying pipe. Regarding the dust removal hood, the designers set it according to the areas of the new high-carbon ferrochrome vibrating screen that are prone to dust generation. The dust removal conveying pipe is designed with the dust removal hood in mind, thereby conveying the dust to the dust removal device 9 for dust separation and collection. In this utility model, the height of the dust removal device 9 is higher than the height of the silo 5, and the height of the second horizontal conveying pipe 11 is also higher than the height of the silo 5. A third vertical pipe is provided at the end of the second horizontal conveying pipe 11, and the third vertical pipe is connected to the silo 5. In this utility model, the horizontal conveying pipes (including the first and second horizontal conveying pipes) are both long straight pipe structures, preferably a complete long straight circular pipe (unsegmented). The horizontal conveying pipes are horizontally arranged, with a power device installed at one end. A screw rod is installed inside the pipe, driven by the power device to rotate, and the material inside the pipe is conveyed to the other end of the horizontal conveying pipe under the rotation of the screw rod. The risers (including the first riser, the second riser, and the third riser) all adopt a multi-segment structure, that is, they are composed of multiple pipe segments. This allows the pipeline layout of the risers to be set according to the on-site construction conditions. Regardless of how many pipe segments are assembled into a riser, the whole should be kept vertical.

[0041] 7. Video Surveillance System. The video surveillance system includes cameras, signal lines for video signal transmission, and monitors. Monitors are installed in the monitoring room, while cameras are installed at the locations requiring monitoring, such as near a silo. Video monitoring allows for tracking of vehicles entering or leaving the silo, whether vehicles are parked correctly, and the silo's material discharge status. This enables remote control of the silo's operation. When multiple cameras and monitors are used, existing technologies can be employed to establish connections between the cameras, monitors, and the monitoring server, which will not be elaborated upon here.

[0042] 8. High-Pressure Purging System. The high-pressure purging system includes a high-pressure air source (e.g., a high-pressure air pump) and purging nozzles. The high-pressure air source is connected to the purging nozzles via pipelines. The purging nozzles are positioned corresponding to the vibrating screen. The purging nozzles can be fixed to the vibrating screening device using brackets, or they can be handheld for operation by the operator. The high-pressure purging system is used to purge the vibrating screen with high-pressure airflow before the vibrating screening device is started.

[0043] The specific implementation scheme of this utility model is as follows:

[0044] The novel high-carbon ferrochrome vibrating screening equipment provided by this utility model is newly constructed based on the existing transfer building. The main added facilities include: two sets of remotely controllable diversion valves, two sets of vibrating screening devices 4, one set of conveying system 6 (belt conveyor), two hoppers, one set of silo 5 and its support (including foundation), one set of discharge valve, one set of micro-electrostatic or baghouse dust collection and environmental protection equipment system, one set of electric gate (electric ash discharge valve), two pipeline valves, a wear-resistant steel plate chute, one set of automated control system connected to the control room, two sets of monitoring camera systems, and one set of material discharge control system. After the material to be screened is screened, the oversize material is output from the vibrating screen output end by vibration and transported away by a belt conveyor. The undersize material is collected in silo 5 through pipelines. Silo 5 is equipped with a remote and local control system (capable of both remote and local control) at its bottom, which loads the collected material (small particles and / or powdery materials) onto trucks for transportation. The vibrating screening device 4 is pre-vibrated and the screen is blown with compressed air before each start-up, which can automatically clean the mesh. In addition to screening ferrochrome, this utility model can also normally transport lime and mineral raw materials. The addition of a micro-electrostatic or bag filter dust removal environmental protection system (i.e., the dust removal system of this utility model) ensures that the production process is environmentally friendly and safe.

[0045] As described above, this utility model provides a novel high-carbon ferrochrome vibrating screening device. In this utility model, the novel high-carbon ferrochrome vibrating screening device includes: a material diversion device 1, which is equipped with a diversion valve; the material diversion device includes a first diversion path 2 for direct material output and participation in production; and a second diversion path 3 for material output to the vibrating screening process; the diversion valve is remotely controllable to select between the first and second diversion paths for material conveying; and a vibrating screening device 4, where the second diversion path is connected to the vibrating screening device via a chute, and the vibrating screening device is used to receive the required material. The material to be vibrated and screened is vibrated and screened. Large particles screened by the vibrating screener are directly output to participate in production, while small particles and / or powdery materials screened by the vibrating screener are transported to downstream equipment through a pipeline system. The downstream equipment includes a silo 5, which is an overhead structure used to collect the screened small particles and / or powdery materials and allows for controlled discharge. A conveying system is also included, with the first diversion path connected to the conveying system via a chute. The conveying system outputs the material directly participating in production, and the oversize material after screening by the vibrating screener is connected to the conveying system via a chute, allowing the oversize material to be output.

[0046] Through the above structural design, this utility model incorporates a material diversion device 1, which allows for the diversion of materials that require screening from those that do not, ensuring the normal operation of the original system. Materials requiring screening are then diverted and subjected to vibrating screening by the vibrating screening device 4, separating them into oversize and undersize materials. Different types of materials can undergo different subsequent processing. This utility model improves the utilization rate of high-carbon ferrochrome, avoids the waste of small particles of high-carbon ferrochrome powder, and reduces production and operating costs. Furthermore, the novel high-carbon ferrochrome vibrating screening equipment provided by this utility model is a new addition to the existing structure. It does not affect the original raw material transfer channel, while simultaneously achieving high-carbon ferrochrome screening, as well as the collection, transfer, storage, and dust removal of the screened powder.

[0047] This invention employs a vibrating screening device 4 to screen the materials to be screened. The oversize material (high-carbon ferrochrome with a diameter greater than 5mm) is transported into the smelting furnace by a conveyor belt; the undersize material (high-carbon ferrochrome with a diameter less than 5mm) is collected in a silo 5 through a pipeline. The silo 5 has a remote control system at its bottom to discharge the powder onto trucks for transport and subsequent use in smelting. In the existing technology, the existing equipment in the transfer station includes: two large-angle conveyor belts, chutes, dust removal pipelines, etc., which can be used for the transfer of lime, ferrochrome, and mineral raw materials. Taking a daily ferrochrome processing capacity of 1000 tons as an example, the oversize material after screening is transported away by the existing conveyor belt; the undersize material (ferrochrome powder) is at most 5mm (initially determined), and is collected in the silo 5, so the storage capacity of the silo 5 is no less than 50 tons.

[0048] Raw materials, including lime, minerals, and ferrochrome, are transported to a material diversion device 1, 24 meters above the ground, using an existing high-angle conveyor belt. The material diversion device 1 is equipped with a remotely controlled diversion valve, which diverts the ferrochrome material to be screened to a vibrating screen and the lime or minerals to the conveyor belt. A vibrating screen 4 is installed on a working layer 20 meters above the ground. The ferrochrome material passes through the vibrating screen, separating ferrochrome particles and powder. In this invention, two sets of vibrating screens 4 are provided. The ferrochrome particles screened by the front vibrating screen 4 fall onto the existing conveyor belt via a chute (between the vibrating screen 4 and the conveyor belt). The ferrochrome particles from the rear vibrating screen 4 are transported to the existing conveyor belt via a new conveyor belt and sent away together. The powder collected by the front vibrating screen 4 falls into a silo 5 via a dedicated chute; the powder collected by the rear vibrating screen 4 also falls into the silo 5 via the same chute. The bottom of silo 5 is equipped with a remote and local controlled material discharge system. This invention adds a micro-electrostatic or baghouse dust collection system to ensure an environmentally friendly and safe production process. Through online high-chromium screening, high-chromium powder can be recycled, reducing production costs. The powder after online screening can be directly transported to the storage silo via pipeline, eliminating the need for multiple transfers and reducing process losses. The online screening is highly automated, requiring no additional personnel and reducing labor costs. The addition of this system effectively treats the dust generated during screening, preventing environmental pollution and harm to employee health.

[0049] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A novel high-carbon ferrochrome vibrating screening device, characterized in that, include: Material diversion device (1), wherein a diversion valve is provided in the material diversion device, the material diversion device includes a first diversion path (2) for direct output of material and participation in production, the material diversion device includes a second diversion path (3) for output of material to vibrating screening process, the diversion valve can be remotely controlled to realize the selection of material conveying in the first diversion path and the second diversion path; Vibrating screen device (4), the second diversion path is connected to the vibrating screen device through a chute, the vibrating screen device is used to receive the material that needs to be vibrated and screen it, the large particles screened by the vibrating screen device are directly output to participate in production, and the small particles and / or powdery materials screened by the vibrating screen device are transported to downstream equipment through the pipeline system. The downstream equipment includes a silo (5), which is an overhead structure used to collect small granular materials and / or powdery materials screened out and to discharge them in a controlled manner. The conveying system (6) is connected to the first diversion path via a chute, through which the material directly involved in production is output. The material on the screen after being screened by the vibrating screen is connected to the conveying system via a chute, through which the material on the screen is output.

2. The novel high-carbon ferrochrome vibrating screening equipment according to claim 1, characterized in that, The material diversion device includes a diversion device inlet, and a diversion fluid is provided below the diversion device inlet. The diversion fluid has an inverted Y-shaped structure. The upper opening of the diversion fluid is connected to or integrally formed with the diversion device inlet. The lower opening of the diversion fluid is connected to the first diversion path and the second diversion path respectively. The diversion valve is provided inside the diversion fluid.

3. The novel high-carbon ferrochrome vibrating screening equipment according to claim 2, characterized in that, At least two material diversion devices are provided for diverting different materials, and all of the material diversion devices are arranged at intervals along the conveying direction of the conveying system. All the second diversion paths of the aforementioned material diversion devices are connected.

4. The novel high-carbon ferrochrome vibrating screening equipment according to claim 1, characterized in that, The vibrating screening device includes a vibrating screen with screen holes evenly distributed on it, the screen holes having a diameter of 4.5mm to 5.5mm. The vibrating screen includes a vibrating screening output end and a bottom collection bin (7). The vibrating screening output end is connected to the conveying system and is used to output the large particles screened out to the conveying system. The bottom collection bin is used to collect and transfer the small particles and / or powdery materials screened out.

5. The novel high-carbon ferrochrome vibrating screen according to claim 4, characterized in that, The vibrating screen is inclined in the direction perpendicular to the conveying system for conveying materials, with one end of the vibrating screen closer to the conveying system being lower than the other end. The end of the vibrating screen closer to the conveying system is the vibrating screening output end.

6. The novel high-carbon ferrochrome vibrating screening equipment according to claim 4, characterized in that, The pipeline system includes a first transverse conveying pipe (8), and a spiral conveying device is provided in the first transverse conveying pipe for transverse conveying of materials in the first transverse conveying pipe. The first transverse conveying pipe is located below the vibrating screening device and above the silo. The bottom collection chamber has a funnel-shaped structure and is provided with a top opening and a bottom opening. The top opening completely covers the vibrating screen plate from bottom to top. The first horizontal conveying pipe is connected to the bottom opening of the bottom collection chamber through a first vertical pipe. The first vertical pipe has a multi-segment structure. The end of the first horizontal conveying pipe is connected to a second vertical pipe, which is connected to the hopper.

7. The novel high-carbon ferrochrome vibrating screening equipment according to any one of claims 1 to 6, characterized in that, It also includes a dust removal system, which includes a dust removal device (9), a dust removal conveying pipe, and a dust removal hood for setting at the dust-generating parts of the equipment or the connection between equipment. The dust removal device is a micro electrostatic dust removal device or a bag filter dust removal device. The dust removal device is used to filter the dust and collect the filtered dust. The dust removal device is connected to the dust removal hood through the dust removal conveying pipe. The dust removal device is connected to the silo and is used to transport the collected dust to the silo.

8. The novel high-carbon ferrochrome vibrating screen according to claim 7, characterized in that, The dust removal device is provided with a dust collection bin (10) at the bottom, and a second horizontal conveying pipe (11) is connected to the bottom opening of the dust collection bin. The dust collection bin has a funnel-shaped structure, and the bottom opening of the dust collection bin is connected to the side wall of the second horizontal conveying pipe near one end. A spiral conveying device is provided in the second horizontal conveying pipe to realize the horizontal conveying of the material in the second horizontal conveying pipe. The other end of the second horizontal conveying pipe is the end, and a third vertical pipe is provided at the end of the second horizontal conveying pipe. The third vertical pipe has a multi-segment structure and is connected to the silo.

9. The novel high-carbon ferrochrome vibrating screening equipment according to claim 4, characterized in that, It also includes a high-pressure purging system, which includes purging nozzles. The purging nozzles are set corresponding to the vibrating screen and are used to purge the vibrating screen with high-pressure airflow before the vibrating screening device is started.

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