Screening and crushing treatment device for flash smelting concentrate
By designing the device of material vibrating screen, buffer cylinder and screw conveyor, the crusher material and environmental pollution caused by uneven screening feed in the flash smelting process is solved, quantitative transportation and smoke recovery are achieved, and production efficiency and operating environment are improved.
Patent Information
- Application Number
- CN202421746358.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-23
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-07-23
AI Technical Summary
In the flash smelting process, the uneven feed of the concentrate after screening leads to crusher material, increasing transportation costs and environmental pollution problems.
Design a device including material vibrating screen, buffer cylinder and screw conveyor, which can quantitatively convey materials through screw conveyors, buffer cylinder buffers materials, and the two-way crusher works alternately, and combines the vacuum cleaner to recover smoke and dust to improve the working environment.
It realizes quantitative transportation of materials, reduces the failure rate of crusher, reduces secondary transportation, improves production efficiency, and improves the operating environment.
Smart Images
Figure CN223249480U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of flash smelting furnace screening equipment, in particular to a screening and crushing processing device for flash smelting concentrate. Background Art
[0002] Flash smelting is an advanced smelting technology developed in modern times. It has the advantages of low energy consumption, large scale, good working conditions, high automation level and high labor productivity. However, the flash smelting process has high requirements for the particle size of the concentrate. Therefore, the concentrate needs to be screened and dried before entering the smelting furnace. The screening process generally consists of two parts: screening and crushing. As a key process in production, the screening process has also exposed some problems in actual production that directly affect normal production. The following are the specific problems:
[0003] 1. After screening, the material on the screen directly enters the crusher. The uneven feed amount will cause the crusher to jam and overload, resulting in equipment failure and affecting normal production;
[0004] 2. When the crusher breaks down, the oversize material needs to be discharged and transported by car to the concentrate storage and then re-entered into the system, increasing transportation costs;
[0005] 3. The smoke and dust collected by the bag dust collector is transported to the concentrate warehouse by car, which not only increases the transportation cost but also seriously pollutes the working environment and affects the physical and mental health of the employees. Utility Model Content
[0006] The purpose of the utility model is to overcome the defects and shortcomings of the prior art, provide a device for screening and crushing ore concentrates in flash smelting, and solve various problems in the prior art.
[0007] To achieve the above objectives, the present invention provides the following technical solutions:
[0008] A device for screening and crushing ore concentrate from flash smelting comprises an inclined material vibrating screen, a feeding belt is mounted on the upper end of the material vibrating screen, a material bin is mounted on the lower end of the material vibrating screen, a discharge belt is mounted below the bottom discharge port of the material bin, a material receiving and conveying unit is mounted at the discharge end of the material vibrating screen, the material receiving and conveying unit comprises a buffer cylinder for receiving material on the material vibrating screen, a bidirectional screw conveyor is horizontally passed through the bottom end of the buffer cylinder, crushers are respectively mounted below the discharge ports at both ends of the screw conveyor, and the discharge port of the crusher is located above the discharge belt.
[0009] Dust suction pipes are respectively installed above the feeding belt, the material vibrating screen and the buffer cylinder. The dust suction pipes are all connected to the dust suction main pipe, and the dust suction main pipe is connected to the fan through the pipe and the bag dust collector.
[0010] The discharge end of the dust collection main pipe is connected to a vertically arranged discharge pipe, and a buffer cylinder is provided at the lower end of the discharge pipe. The bottom end of the buffer cylinder is conical, and the feed port of the bag dust collector is connected to the buffer cylinder through branch pipes 1 and 2 arranged above and below. The bottom discharge port of the buffer cylinder is located above the unloading belt.
[0011] The diameter of the branch pipe 1 is greater than the diameter of the branch pipe 2.
[0012] A dust collecting hood is provided above the material vibrating screen, the top of the dust collecting hood is connected with a dust suction pipe, the suction inlet ends of the other dust suction pipes are respectively provided with dust collecting hoods, and regulating valves are respectively installed on the dust suction pipes.
[0013] A sensor for detecting the material in the barrel is fixedly installed on the inner side wall of the upper end of the cache barrel. There are two sensors, which are respectively used to detect the upper and lower limit positions in the cache barrel.
[0014] Both ends of the screw conveyor are supported by supports, and the discharge ends of both ends are respectively provided with discharge pipes facing the crusher.
[0015] Compared with the prior art, the beneficial effects of the present invention are:
[0016] The utility model has a reasonable structural design and a compact system layout. The materials are gathered through the buffer cylinder of the material receiving and conveying unit and then conveyed into the crusher through the screw conveyor. On the one hand, the materials are spirally conveyed by the rotation of the screw conveyor to ensure quantitative conveying, and the materials under the vibrating screen during the crushing operation can be buffered by the buffer cylinder; on the other hand, the two-way conveying and the crushers on both sides work alternately can effectively reduce the failure rate of the crusher, eliminate the need for secondary transportation, and improve production efficiency.
[0017] The feed port of the bag dust collector is connected to the buffer drum through branch pipes 1 and 2 set up above and below. The discharge port at the bottom end of the buffer drum is located above the discharge belt, which can fully recycle the smoke and dust generated during the screening and crushing process, and fall onto the discharge belt to enter the next process, thereby improving the system recovery effect and improving the job environment. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a structural diagram of the present utility model.
[0019] Reference numerals:
[0020] 1. Feeding belt; 2. Material vibrating screen; 3. Material silo; 4. Crusher; 5. Buffer cylinder; 6. Screw conveyor; 7. Discharge pipe; 8. Unloading belt; 10. Regulating valve; 11. Bag dust collector; 12. Fan; 13. Dust collection duct; 14. Dust collection main pipe; 15. Buffer cylinder; 16. Branch pipe 1; 17. Branch pipe 2; 18. Dust collection hood; 19. Dust collection hood; 20. Sensor. DETAILED DESCRIPTION
[0021] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0022] See attached Figure 1 ; A device for screening and crushing ore concentrate from flash smelting, comprising an inclined material vibrating screen 2, a feeding belt 1 being mounted on the upper end of the material vibrating screen 2, and characterized in that: a material bin 3 is mounted on the lower end of the material vibrating screen 2, a discharge belt 8 is mounted below the bottom discharge port of the material bin 3, a material receiving and conveying unit is mounted at the discharge end of the material vibrating screen 2, the material receiving and conveying unit comprises a buffer cylinder 5 for receiving the material on the material vibrating screen, a bidirectional screw conveyor 6 is horizontally passed through the bottom end of the buffer cylinder 5, a crusher 4 is respectively mounted below the discharge ports at both ends of the screw conveyor 6, and the discharge port of the crusher 4 is located above the discharge belt 8. The structure is reasonably designed and the system is compactly arranged. The materials are gathered through the buffer cylinder of the material receiving and conveying unit and then conveyed to the crusher through the screw conveyor. The materials are spirally conveyed by the rotation of the screw conveyor to ensure quantitative conveying. The buffer cylinder can be used to cache the materials under the vibrating screen during the crushing operation; two-way conveying, the crushers on both sides work alternately, which can effectively reduce the failure rate of the crusher and do not require secondary transportation, thereby improving production efficiency. The crushed materials then enter the unloading belt 8 for processing in the next step.
[0023] Furthermore, dust collection pipes 13 are respectively installed above the feeding belt 1, the material vibrating screen 2, and the buffer drum 5. The dust collection pipes 13 are all connected to the dust collection main pipe 14, which is connected to the fan 12 through the pipe 9 and the bag dust collector 11. The fan adopts variable frequency control, and the frequency is remotely adjusted according to the dust collection situation. The feed port of the bag dust collector is connected to the buffer drum through the branch pipe 1 and branch pipe 2 arranged above and below. The bottom discharge port of the buffer drum is located above the discharge belt, which can fully recycle the smoke and dust generated during the screening and crushing process, and drop it to the discharge belt to enter the next process, thereby improving the system recovery effect and the workplace environment. The discharge end of the dust collection main pipe 14 is connected to a vertically arranged discharge pipe. The lower end of the discharge pipe is provided with a buffer drum 15. The bottom end of the buffer drum 15 is conical. The feed port of the bag dust collector 11 is connected to the buffer drum 15 through the branch pipe 16 and branch pipe 2 17 arranged above and below. The bottom discharge port of the buffer drum 15 is located above the discharge belt 8.
[0024] Furthermore, the diameter of branch pipe 16 is larger than that of branch pipe 2 17. The size of the diameters of branch pipes 16 and 17, as well as their vertical distribution, ensures effective dust collection. Branch pipe 2 17 can also direct the downward force of some of the smoke and dust it draws in, allowing it to fall directly from the discharge pipe onto the unloading belt 8. A dust hood 18 is installed above the vibrating screen 2, with the top of the hood connected to the dust collection pipe 13. The suction ports of the other dust collection pipes 13 are each equipped with a dust collection hood 19. Regulating valves 10 are also installed on each dust collection pipe 13. These regulating valves are equipped with actuators, allowing their openings to be remotely adjusted based on actual site conditions, facilitating centralized control.
[0025] Furthermore, two sensors 20 are fixedly mounted on the inner sidewall of the upper end of the buffer barrel 5 to detect the material inside the barrel. One sensor detects the upper and lower limit positions within the buffer barrel. Screw conveyor 6 is supported at both ends by brackets, and its discharge ends are each equipped with discharge pipes 7 facing the crusher. The sensor structure detects the position of the material in the buffer barrel 5, effectively ensuring that the material stored in the buffer barrel 5 is discharged in an orderly and centralized manner through screw conveyor 6. Bidirectional conveying and alternating operation of the crushers on both sides effectively reduce crusher failure rates and eliminate the need for secondary transport.
[0026] The specific process of the above structure is:
[0027] During production, the concentrate falls onto the material vibrating screen through the feeding belt, and the material is put into the material vibrating screen 2 through the feeding belt 1. After screening by the material vibrating screen 2, it is screened into oversize and undersize. The undersize is qualified concentrate and falls onto the discharge belt to enter the next process, and then is continuously fed into the crusher through the screw conveyor. The operation of the screw conveyor is controlled during the transportation process to ensure the amount of material entering the crusher, avoiding a large amount of entry that affects the crushing efficiency. The qualified material after crushing falls onto the discharge belt to enter the next process. Since the two crushers work alternately, the probability of failure can be reduced. Even if a failure occurs, the other crusher can still work normally. Moreover, if the crusher fails, the normal operation can still be guaranteed through the structure of the other crusher and the buffer drum. The dust generated when the above equipment is in operation is discharged through the dust collecting pipe, bag dust collector, and fan. The dust collecting pipe is provided with a regulating valve, and the smoke collected by the bag dust collector falls onto the discharge belt to enter the next process.
[0028] Although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.
[0029] Therefore, the above description is only a preferred embodiment of the present application and is not intended to limit the scope of implementation of the present application; that is, all equivalent modifications made according to the scope of the claims of the present application are within the scope of protection of the claims of the present application.
Claims
1. A device for screening and crushing ore concentrate from flash smelting, comprising a tilted material vibrating screen (2), a feeding belt (1) being mounted on the upper end of the material vibrating screen (2), and characterized in that: The lower end frame of the material vibrating screen (2) is provided with a material bin (3), a material discharge belt (8) is provided below the bottom discharge port of the material bin (3), a material receiving and conveying unit is provided at the discharge end of the material vibrating screen (2), and the material receiving and conveying unit includes a buffer cylinder (5) for receiving the material on the material vibrating screen, a bidirectional screw conveyor (6) is horizontally passed through the bottom end of the buffer cylinder (5), and crushers (4) are respectively provided below the discharge ports at both ends of the screw conveyor (6), and the discharge port of the crusher (4) is located above the material discharge belt (8).
2. The device for screening and crushing flash smelting concentrate according to claim 1, characterized in that: Dust suction pipes (13) are respectively arranged above the feeding belt (1), the material vibrating screen (2) and the buffer cylinder (5); the dust suction pipes (13) are all connected to a dust suction main pipe (14); and the dust suction main pipe (14) is connected to the fan (12) through a pipe and a bag dust collector (11).
3. The device for screening and crushing flash smelting concentrate according to claim 2, characterized in that: The discharge end of the dust collection main pipe (14) is connected to a vertically arranged discharge pipe, and a buffer cylinder (15) is provided at the lower end of the discharge pipe. The bottom end of the buffer cylinder (15) is conical, and the feed port of the bag dust collector (11) is connected to the buffer cylinder (15) through a branch pipe 1 (16) and a branch pipe 2 (17) arranged above and below. The bottom discharge port of the buffer cylinder (15) is located above the unloading belt (8).
4. The device for screening and crushing flash smelting concentrate according to claim 3, characterized in that: The diameter of the branch pipe 1 (16) is greater than the diameter of the branch pipe 2 (17).
5. The device for screening and crushing flash smelting concentrate according to claim 1, characterized in that: A dust collecting hood (18) is provided above the material vibrating screen (2), the top of the dust collecting hood (18) is connected to a dust collecting pipe (13), a dust collecting hood (19) is provided at the suction port end of the dust collecting pipe (13), and a regulating valve (10) is installed on the dust collecting pipe (13).
6. The device for screening and crushing flash smelting concentrate according to claim 1, characterized in that: A sensor (20) for detecting the material in the barrel is fixedly mounted on the inner side wall of the upper end portion of the cache barrel (5). There are two sensors, which are respectively used to detect the upper and lower limit positions in the cache barrel.
7. The device for screening and crushing flash smelting concentrate according to claim 1, characterized in that: The two ends of the screw conveyor (6) are respectively supported by supports, and the discharge ends of the two ends are respectively provided with discharge pipes (7) facing the crusher.