Ultra-fine powder production line

Abstract

The utility model discloses a superfine powder production line which comprises a feeding system, a coarse grinding system, a coarse powder storage and distribution system, a superfine powder grinding system, a superfine powder storage and distribution system and a storage system. The materials subjected to coarse grinding enter the coarse powder storage and distribution system, the superfine grinding system and the superfine powder storage and distribution system, the superfine grinding system conducts fine grinding on the materials to obtain fine powder, then the fine powder enters the superfine powder storage and distribution system, and coarse powder, the fine powder and added powder in the superfine powder storage and distribution system are mixed and then enter the storage system to be stored; the ultrafine grinding system is wide in application range, stable in yield, simple in product fineness adjustment, low in energy consumption and high in production advantage and characteristic, fine powder, coarse powder and externally added powder can be mixed and then loaded and transported outwards, qualified fine powder doped in the coarse powder is screened out firstly, then grinding is carried out, and the grinding efficiency is improved. The power consumption of the ball mill is reduced, the grinding efficiency is improved, and more energy is saved.

Description

Technical Field

[0001] The utility model relates to the field of waste slag recycling, and particularly relates to an ultrafine powder production line. Background Art

[0002] The utilization of waste slag refers to processing, modifying and treating the recycled waste slag in order to obtain new materials and products that meet the requirements. The utilization of waste slag includes various methods and technologies, such as recycling, resource utilization, chemical modification, etc.

[0003] Common ways of utilizing waste slag include the following:

[0004] Waste slag can be used as one of the raw materials for cement production, which can replace part of the cement clinker, reducing production costs and environmental pollution. Commonly used waste slag includes limestone, grinding tailings, fly ash, etc. In cement production, waste slag needs to go through treatment steps such as grinding, drying, mixing, etc. to obtain cement raw materials that meet the requirements.

[0005] Waste slag can be used for the construction of railway subgrades, improving the strength and stability of the subgrades. Commonly used waste slag includes coal gangue, steel slag, etc. In subgrade construction, waste slag needs to go through treatment steps such as crushing, screening, landfilling, etc. to obtain subgrade materials that meet the requirements.

[0006] Waste slag can be used as materials for road construction, such as subgrades, road surfaces, embankments, etc. Commonly used waste slag includes fly ash, steel slag, etc. In road construction, waste slag needs to go through treatment steps such as crushing, screening, mixing, etc. to obtain road materials that meet the requirements.

[0007] Waste slag can be used for the production of bricks, such as building bricks, curb stones, etc. Commonly used waste slag includes limestone, steel slag, etc. In brick production, waste slag needs to go through treatment steps such as grinding, mixing, forming, etc. to obtain brick raw materials that meet the requirements.

[0008] At present, waste slag is generally evenly sent to a jaw crusher by a vibrating feeder for primary crushing, and then sent to a counterattack crusher by a belt conveyor for secondary crushing. The crushed material is sent to a vibrating screen by a conveyor for screening, and the unqualified particle size is sent back to the counterattack crusher for secondary crushing until the required particle size is reached. Then, it is sent to the vibrating screen by the conveyor to be divided into different specifications, and finally sent to the corresponding finished product area. However, the current method often has a single product specification, and basically can only output powders with different finenesses. It is impossible to obtain powders with multiple specifications through a set of systems. Moreover, if powders with different finenesses and different components need to be mixed and matched products, it is often necessary to mix different powders produced or purchased separately, which is difficult to ensure the stability of the front-end products, and thus impossible to ensure the quality of the mixed and matched products. Content of the Utility Model

[0009] To solve the above technical problems, the present utility model provides a superfine powder production line, which includes a feeding system, a coarse grinding system, a coarse powder storage and batching system, an ultrafine powder grinding system, an ultrafine powder storage and batching system, and a storage system;

[0010] Materials enter the coarse grinding system from the feeding system and are coarsely ground to obtain coarse powder;

[0011] The coarse powder is input into the coarse powder storage and batching system. The coarse powder storage and batching system can be directly unloaded for application, or the coarse powder can be proportioned and then transported to the ultrafine powder storage and batching system to be mixed with other powders, or the coarse powder can be proportioned and then transported to the ultrafine powder grinding system for ultrafine grinding to obtain ultrafine powder;

[0012] The ultrafine powder is input into the ultrafine powder storage and batching system. The ultrafine powder storage and batching system can be directly unloaded for application or different powders can be mixed and then enter the storage system for storage.

[0013] After the waste slag raw materials are coarsely ground by the coarse grinding system, they enter the coarse powder storage and batching system. On the one hand, the coarse powder storage and batching system can be directly unloaded for application or sold externally; on the second hand, different categories of coarse powder can be proportioned and then transported to the ultrafine powder storage and batching system, and after being proportioned with ultrafine powder or other powders in the ultrafine powder storage and batching system, they are unloaded for application or sold externally; on the third hand, different categories of coarse powder can be proportioned and then transported to the ultrafine powder grinding system for ultrafine grinding to prepare ultrafine powder. The above can meet three requirements simultaneously.

[0014] In addition, the ultrafine powder obtained after ultrafine grinding by the ultrafine powder grinding system is transported to the ultrafine powder storage and batching system. The ultrafine powder storage and batching system can not only directly unload the ultrafine powder for application or sell it externally, but also mix different categories of ultrafine powder and then transport it to the storage system, where it is stored or unloaded from the storage system for application or sell it externally.

[0015] As can be seen from the above, through the superfine powder production line of the present application, various types of products such as coarse powder products, mixed coarse powder products, ultrafine powder products, and mixed ultrafine powder products can be directly obtained, directly meeting different needs. Moreover, whether it is mixed coarse powder or mixed ultrafine powder, they are obtained by mixing after being ground by the coarse grinding system or the ultrafine powder grinding system, rather than being obtained by mixing purchased coarse powder or ultrafine powder of different specifications, which can ensure the stability of the materials and thus ensure the product quality.

[0016] Preferably: The coarse grinding system includes a coarse grinding mill, a coarse grinding classifier, and a coarse grinding dust collector. The coarse grinding mill is provided with a classifier discharge port and a waste residue discharge port, and the coarse grinding classifier is provided with a qualified powder outlet one and an unqualified powder outlet one;

[0017] The feed inlet of the rough grinding mill is connected to the feeding system through a pipeline. The powder separation discharge outlet of the rough grinding mill is connected to the feed inlet of the rough grinding powder separator through a pipeline. The qualified powder outlet 1 of the rough grinding powder separator is connected to the feed inlet of the rough grinding dust collector through a pipeline. The waste residue discharge outlet of the rough grinding mill and the unqualified powder outlet 1 of the rough grinding powder separator are both connected to the feed inlet of the rough grinding mill through pipelines. The discharge outlet of the rough grinding dust collector is connected to the coarse powder storage and batching system through a pipeline.

[0018] Preferably, the rough grinding system further includes a screw conveyor, and both ends of the screw conveyor are respectively connected to the belt conveyor and the feed inlet of the rough grinding mill.

[0019] Preferably, the rough grinding system further includes a return slag belt and a return slag bucket elevator. The waste residue discharge outlet and the unqualified powder outlet 1 are both connected to one end of the return slag belt through pipelines. Both ends of the return slag bucket elevator are respectively connected to the return slag belt and the screw conveyor;

[0020] A return slag iron remover is provided on the return slag belt for removing iron from the materials conveyed by the return slag belt.

[0021] The iron-containing impurities in the materials are generally of high hardness, difficult to grind finely, increase energy consumption, reduce the grinding efficiency, affect the product quality, and also cause significant wear to the mill. By setting a return slag iron remover on the return slag belt, the iron-containing impurities in the return slag can be effectively removed, the grinding efficiency can be improved, the product quality can be improved, and the equipment can be protected from wear.

[0022] Preferably, the coarse powder storage and batching system includes at least two coarse powder storage and batching bins, a coarse powder discharge chute, a coarse powder rough batching chute, and a coarse powder fine batching chute;

[0023] The rough grinding system transports the coarse materials to the coarse powder storage and batching bins;

[0024] The coarse powder discharge chute is directly used for discharging;

[0025] The coarse powder rough batching chutes of at least two of the coarse powder storage and batching bins are jointly connected to the superfine powder storage and batching system through pipelines;

[0026] The end of the coarse powder fine batching chute is sequentially connected to a coarse powder meter and a coarse powder metering chute through pipelines. The coarse powder metering chutes of at least two of the coarse powder storage and batching bins are jointly connected to the superfine grinding system through pipelines.

[0027] The coarse powder meter accurately measures the amount of coarse powder of different categories according to requirements to ensure accurate proportioning.

[0028] Preferably, the coarse powder storage and batching system further includes a grinding aid batching bin, and a grinding aid dust collector and a grinding aid meter are provided on the grinding aid batching bin.

[0029] The grinding aid meter can accurately meter the dosage of the grinding aid in proportion, improving the efficiency of ultrafine grinding.

[0030] Preferably, the ultrafine powder grinding system includes an ultrafine mill, an ultrafine powder separator, and an ultrafine dust collector. The ultrafine powder separator is provided with a qualified powder outlet II and an unqualified powder outlet II.

[0031] The coarse powder storage and batching system is respectively connected to the feed inlet of the ultrafine mill and the feed inlet of the ultrafine powder separator through pipelines.

[0032] The discharge outlet of the ultrafine mill is connected to the feed inlet of the ultrafine powder separator through a pipeline.

[0033] The qualified powder outlet II of the ultrafine powder separator is connected to the ultrafine dust collector through a pipeline, and the discharge outlet of the ultrafine dust collector is connected to the ultrafine powder storage and batching system through a pipeline.

[0034] The unqualified powder outlet II of the ultrafine powder separator is connected to the feed inlet of the ultrafine mill through a pipeline.

[0035] The coarse powder storage and batching system is simultaneously connected to the feed inlet of the ultrafine mill and the feed inlet of the ultrafine powder separator, enabling the ultrafine powder grinding system to have two working modes. In the first mode, the coarse powder conveyed by the coarse powder storage and batching system directly enters the ultrafine mill, and after grinding, it enters the ultrafine powder separator for powder selection. In the second mode, the coarse powder conveyed by the coarse powder storage and batching system first enters the ultrafine powder separator for powder selection, and the powder that meets the fineness requirements is selected first, and the unqualified powder is then conveyed to the ultrafine mill for grinding, which can effectively reduce energy consumption and improve production efficiency.

[0036] Preferably, the ultrafine powder storage and batching system includes at least one first batching bin, at least one second batching bin, at least one third batching bin, and a mixing device. The first batching bin is used to receive the ultrafine powder conveyed by the ultrafine powder grinding system, the second batching bin is used to receive the coarse powder conveyed by the coarse powder storage and batching system, and the third batching bin is used to receive the external added powder. The mixing device is used to mix and stir the powder conveyed by at least two batching bins.

[0037] The ultrafine powder storage and batching system is provided with three batching bins, which are respectively used to store coarse powder, ultrafine powder, and other external added powders, enabling multiple batching methods and obtaining different products. Moreover, the ultrafine powder can be directly unloaded for application or external sales.

[0038] Preferably, the first batching bin, the second batching bin, and the third batching bin are all provided with ultrafine powder batching systems, and the ultrafine powder batching systems are respectively connected to the batching bins and the mixing device through pipelines.

[0039] The first batching bin is also provided with a bulk system, and the bulk system directly discharges and applies the ultrafine powder in the first batching bin.

[0040] Preferably, the storage system includes at least one finished product bin, a finished product chute, and a finished product discharging system corresponding to the finished product bin; the feeding end of the finished product chute is connected to the ultrafine powder storage and batching system through a pipeline and is connected to the feeding port of the finished product bin through a pipeline; the finished product discharging system is used for discharging.

[0041] The technical effects and advantages of the present utility model:

[0042] (1) Through the ultrafine powder production line of the present utility model, various types of products such as coarse powder products, mixed coarse powder products, ultrafine powder products, and mixed ultrafine powder products can be directly obtained, directly meeting different requirements. Moreover, whether it is mixed coarse powder or mixed ultrafine powder, they are obtained by mixing after being ground by the coarse grinding system or the ultrafine powder grinding system, rather than being obtained by mixing different specifications of coarse powder or ultrafine powder purchased externally, which can ensure the stability of the material and thus ensure the product quality.

[0043] (2) In the present utility model, the ultrafine powder grinding system has a wide adaptability range, stable output, simple product fineness adjustment, and low energy consumption, with high production advantages and characteristics. The fine powder in the ultrafine powder grinding system is transported to the ultrafine powder storage and batching system, which can meet the single fine powder material loading and transporting out, and can also mix the fine powder, coarse powder, and externally added powder and then load and transport out.

[0044] (3) In the ultrafine powder grinding system, the coarse powder input from the coarse powder storage and batching system can first enter the ultrafine powder separator for separation, first screening out the qualified fine powder contained in the coarse powder, and then grinding, which is beneficial to reducing the power consumption of the mill, improving the grinding efficiency, and being more energy-saving. Description of the Drawings

[0045] Figure 1 is a schematic structural diagram of the feeding system in the ultrafine powder production line provided by the embodiment of the present application;

[0046] Figure 2 is a schematic structural diagram of the coarse grinding system in the ultrafine powder production line provided by the embodiment of the present application;

[0047] Figure 3 is a schematic structural diagram of the coarse powder storage and batching system in the ultrafine powder production line provided by the embodiment of the present application;

[0048] Figure 4 is a schematic structural diagram of the ultrafine powder grinding system in the ultrafine powder production line provided by the embodiment of the present application;

[0049] Figure 5 is a schematic structural diagram of the ultrafine powder storage and batching system in the ultrafine powder production line provided by the embodiment of the present application;

[0050] Figure 6 It is a schematic structural diagram of the storage system in the ultrafine powder production line provided by the embodiments of the present application.

[0051] In the figure: 100, feeding system; 110, unloading pit; 120, belt scale; 130, belt conveyor; 140, feeding dust collector;

[0052] 200, coarse grinding system; 210, coarse grinding mill; 211, powder selection discharge port; 212, waste residue discharge port; 220, coarse grinding powder separator; 221, qualified powder outlet one; 222, unqualified powder outlet one; 230, coarse grinding dust collector; 231, coarse grinding dust collection fan; 232, coarse grinding dust collection tower; 240, screw conveyor; 250, return slag belt; 251, return slag iron remover; 260, return slag bucket elevator; 270, coarse grinding chute one; 280, coarse grinding chute two; 290, coarse powder elevator;

[0053] 300, coarse powder storage and batching system; 310, coarse powder storage and batching bin; 311, bin top chute; 312, coarse powder storage and batching bin dust collector; 320, coarse powder unloading chute; 321, coarse powder unloading hopper; 330, coarse powder rough batching chute; 340, coarse powder fine batching chute; 341, coarse powder meter; 342, coarse powder metering chute; 350, grinding aid batching bin; 351, grinding aid dust collector; 352, grinding aid meter; 360, coarse powder fine batching elevator; 370, coarse powder fine batching conveying chute; 380, coarse powder rough batching elevator; 390, coarse powder rough batching conveying chute; 391, coarse powder finished product elevator;

[0054] 400, ultrafine grinding system; 410, ultrafine grinding mill; 420, ultrafine powder separator; 421, qualified powder outlet two; 422, unqualified powder outlet two; 430, ultrafine dust collector; 431, ultrafine dust collection fan; 432, ultrafine dust collection tower; 440, tail grinding dust collector; 441, tail grinding dust collection fan; 442, tail grinding dust collection tower; 451, powder selection elevator; 452, powder selection chute; 453, powder selection iron remover; 461, ultrafine powder finished product chute one; 462, ultrafine powder finished product chute two; 463, ultrafine powder finished product dust collector; 464, ultrafine powder finished product elevator; 470, return powder chute; 471, return powder iron remover;

[0055] 500, ultrafine powder storage and batching system; 510, first batching bin; 520, second batching bin; 530, third batching bin; 540, mixing equipment; 550, ultrafine powder batching system; 551, ultrafine powder batching meter; 560, bulk system; 561, bulk chute; 562, bulk hopper; 563, bulk hopper dust collector; 571, ultrafine powder into bin chute; 572, coarse powder into bin chute; 580, product batching chute; 581, batching chute dust collector; 590, product elevator;

[0056] 600, Storage system; 610, finished product bin; 611, finished product bin dust collector; 620, finished product bin chute; 630, finished product discharging system; 631, finished product discharging chute; 632, loading hopper; 633, finished product bin hopper dust collector; 701, coarse powder loading truck; 702, ultrafine powder loading truck; 703, finished product loading truck. Detailed implementation manners

[0057] The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners. The embodiments of the present utility model are given for the purpose of illustration and description, and are not exhaustive or limited to the disclosed form. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present utility model, and to enable those of ordinary skill in the art to understand the present utility model and thus design various embodiments with various modifications suitable for specific purposes.

[0058] Please refer to Figures 1 to 6 In this embodiment, a superfine powder production line is provided, including a feeding system 100, a coarse grinding system 200, a coarse powder storage and batching system 300, an ultrafine powder grinding system 400, an ultrafine powder storage and batching system 500, and a storage system 600;

[0059] The material enters the coarse grinding system 200 from the feeding system 100 for coarse grinding to obtain coarse powder;

[0060] The coarse powder is input into the coarse powder storage and batching system 300 for direct discharging application, or the coarse powder is batched and then conveyed to the ultrafine powder storage and batching system 500 for mixing with other powders, or the coarse powder is batched and then conveyed to the ultrafine powder grinding system 400 for ultrafine grinding to obtain ultrafine powder;

[0061] The ultrafine powder is input into the ultrafine powder storage and batching system 500, and the ultrafine powder storage and batching system 500 is directly discharged for application or the different powders are mixed and then enter the storage system 600 for storage.

[0062] Refer to Figure 1 As shown, in this embodiment, the feeding system 100 includes a plurality of discharging pits 110, a belt scale 120, and a belt conveyor 130. The material is conveyed from the discharging pit 110 to the belt scale 120 for weighing, and the weighed material is conveyed to the coarse grinding system 200 through the belt conveyor 130 for coarse grinding. An upper feeding dust collector 140 is provided at the end of the belt conveyor 130.

[0063] Refer to Figure 2As shown, in this embodiment, the rough grinding system 200 includes a rough grinding mill 210, a rough grinding classifier 220, and a rough grinding dust collector 230. The rough grinding mill 210 is provided with a classifier discharge port 211 and a waste residue discharge port 212. The rough grinding classifier 220 is provided with a first qualified powder outlet 221 and a first unqualified powder outlet 222;

[0064] The feed port of the rough grinding mill 210 is connected to the feeding system 100 through a pipeline. The classifier discharge port 211 of the rough grinding mill 210 is connected to the feed port of the rough grinding classifier 220 through a pipeline. The first qualified powder outlet 221 of the rough grinding classifier 220 is connected to the feed port of the rough grinding dust collector 230 through a pipeline. Both the waste residue discharge port 212 of the rough grinding mill 210 and the first unqualified powder outlet 222 of the rough grinding classifier 220 are connected to the feed port of the rough grinding mill 210 through pipelines. The discharge port of the rough grinding dust collector 230 is connected to the coarse powder storage and batching system 300 through a pipeline.

[0065] In this embodiment, the rough grinding mill 210 is a vertical mill.

[0066] In this embodiment, the rough grinding system 200 further includes a screw conveyor 240. The two ends of the screw conveyor 240 are respectively connected to the belt conveyor 130 and the feed port of the rough grinding mill 210.

[0067] In this embodiment, the rough grinding system 200 further includes a return slag belt 250 and a return slag bucket elevator 260. Both the waste residue discharge port 212 and the first unqualified powder outlet 222 are connected to one end of the return slag belt 250 through pipelines. The two ends of the return slag bucket elevator 260 are respectively connected to the return slag belt 250 and the screw conveyor 240.

[0068] In this embodiment, a return slag iron remover 251 is provided on the return slag belt 250 for removing iron from the materials conveyed by the return slag belt 250.

[0069] In this embodiment, the rough grinding dust collector 230 is provided with a rough grinding dust collection fan 231 and a rough grinding dust collection tower 232. The air inlet of the rough grinding dust collection fan 231 is connected to the rough grinding dust collector 230 through a pipeline, and the air outlet is connected to the rough grinding dust collection tower 232 and the feed port of the rough grinding classifier 220 through pipelines respectively.

[0070] In this embodiment, the rough grinding system 200 further includes a first rough grinding chute 270, a second rough grinding chute 280, and a coarse powder elevator 290. The two ends of the first rough grinding chute 270 are respectively connected to the discharge port of the rough grinding dust collector 230 and the front end of the second rough grinding chute 280 through pipelines. The end of the second rough grinding chute 280 is connected to the bottom end of the coarse powder elevator 290 through a pipeline. The top end of the coarse powder elevator 290 is connected to the coarse powder storage and batching system 300 through a pipeline.

[0071] In this embodiment, a rough grinding dust collector 281 is provided at the end of the second rough grinding chute 280.

[0072] Refer to Figure 3 As shown, in this embodiment, the coarse powder storage and batching system 300 includes at least two coarse powder storage and batching bins 310, a coarse powder discharge chute 320, a coarse powder rough batching chute 330, and a coarse powder fine batching chute 340;

[0073] The rough grinding system 200 transports the coarse materials to the coarse powder storage and batching bins 310;

[0074] The coarse powder discharge chute 320 is used for direct discharging applications;

[0075] The coarse powder rough batching chutes 330 of at least two coarse powder storage and batching bins 310 are jointly connected to the ultrafine powder storage and batching system 500 through pipelines;

[0076] The end of the coarse powder fine batching chute 340 is sequentially connected to a coarse powder meter 341 and a coarse powder metering chute 342 through pipelines. The coarse powder metering chutes 342 of at least two coarse powder storage and batching bins 310 are jointly connected to the ultrafine powder grinding system 400 through pipelines.

[0077] Furthermore, the coarse powder storage and batching system 300 further includes a grinding aid batching bin 350, and a grinding aid dust collector 351 and a grinding aid meter 352 are provided on the grinding aid batching bin 350.

[0078] In this embodiment, the coarse powder storage and batching system 300 further includes a coarse powder fine batching elevator 360 and a coarse powder fine batching conveying chute 370. The coarse powder metering chutes 342 of at least two coarse powder storage and batching bins 310 are respectively connected to the feed inlet of the coarse powder fine batching elevator 360 through pipelines. The discharge outlet of the coarse powder fine batching elevator 360 and the discharge outlet of the grinding aid meter 352 are both connected to the coarse powder fine batching conveying chute 370 through pipelines, and the coarse powder fine batching conveying chute 370 is connected to the ultrafine powder grinding system 400 through pipelines.

[0079] In this embodiment, the coarse powder storage and batching system 300 further includes a coarse powder rough batching elevator 380 and a coarse powder rough batching conveying chute 390. The coarse powder rough batching chutes 330 of at least two coarse powder storage and batching bins 310 are respectively connected to the feed inlet of the coarse powder rough batching elevator 380 through pipelines. The discharge outlet of the coarse powder rough batching elevator 380 is connected to the coarse powder rough batching conveying chute 390 through pipelines, and the coarse powder rough batching conveying chute 390 is connected to the ultrafine powder storage and batching system 500 through pipelines.

[0080] In this embodiment, the output end of the coarse powder rough batching conveying chute 390 is connected to the feed inlet of a coarse powder finished product elevator 391, and the discharge outlet of the coarse powder finished product elevator 391 is connected to the ultrafine powder storage and batching system 500 through pipelines.

[0081] In this embodiment, a silo top chute 311 is provided at the top of the coarse powder storage and batching silo 310. The coarse grinding system 200 is connected to the silo top chute 311 through a pipeline. The silo top chute 311 is used to input coarse powder into different coarse powder storage and batching silos 310 respectively.

[0082] In this embodiment, a dust collector for the coarse powder storage and batching silo 312 is also provided at the top of the coarse powder storage and batching silo 310.

[0083] In this embodiment, the discharge end of the coarse powder discharge chute 320 is connected to the coarse powder discharge hopper 321 through a pipeline. The coarse powder is conveyed to the coarse powder loading truck 701 through the coarse powder discharge hopper 321.

[0084] Refer to Figure 4 As shown, in this embodiment, the ultrafine grinding system 400 includes an ultrafine mill 410, an ultrafine powder separator 420, and an ultrafine dust collector 430. The ultrafine powder separator 420 is provided with a qualified powder outlet two 421 and an unqualified powder outlet two 422;

[0085] The coarse powder storage and batching system 300 is respectively connected to the feed inlet of the ultrafine mill 410 and the feed inlet of the ultrafine powder separator 420 through pipelines;

[0086] The discharge outlet of the ultrafine mill 410 is connected to the feed inlet of the ultrafine powder separator 420 through a pipeline;

[0087] The qualified powder outlet two 421 of the ultrafine powder separator 420 is connected to the ultrafine dust collector 430 through a pipeline. The discharge outlet of the ultrafine dust collector 430 is connected to the ultrafine powder storage and batching system 500 through a pipeline;

[0088] The unqualified powder outlet two 422 of the ultrafine powder separator 420 is connected to the feed inlet of the ultrafine mill 410 through a pipeline.

[0089] In this embodiment, the ultrafine mill 410 is a tube mill.

[0090] In this embodiment, the ultrafine grinding system 400 further includes a dust collector at the mill tail 440. The dust collector at the mill tail 440 is respectively connected to one end of the discharge outlet of the ultrafine mill 410 and the feed inlet of the ultrafine powder separator 420 through pipelines.

[0091] In this embodiment, the ultrafine grinding system 400 further includes a powder separation and conveying device. The powder separation and conveying device includes a powder separation elevator 451 and a powder separation chute 452. The feed inlet of the powder separation elevator 451 is respectively connected to the discharge outlet of the ultrafine mill 410, the discharge outlet of the dust collector at the mill tail 440, and the coarse powder storage and batching system 300 through pipelines. The discharge outlet of the powder separation elevator 451 is connected to one end of the powder separation chute 452 through a pipeline. The other end of the powder separation chute 452 is connected to the feed inlet of the ultrafine powder separator 420 through a pipeline.

[0092] In this embodiment, a powder separator electromagnet 453 is provided on the powder separator chute 452 for removing iron from the material passing through the powder separator chute 452.

[0093] In this embodiment, the ultrafine grinding system 400 further includes an ultrafine powder finished product conveying device. The ultrafine powder finished product conveying device includes an ultrafine powder finished product chute one 461, an ultrafine powder finished product chute two 462, and an ultrafine powder finished product dust collector 463. The two ends of the ultrafine powder finished product chute one 461 are respectively connected to the discharge port of the ultrafine dust collector 430 and the feed end of the ultrafine powder finished product chute two 462. The discharge end of the ultrafine powder finished product chute two 462 is connected to the ultrafine powder storage and batching system 500 through a pipeline; the ultrafine powder finished product dust collector 463 is arranged at the discharge end of the ultrafine powder finished product chute two 462.

[0094] In this embodiment, the ultrafine powder finished product conveying device further includes an ultrafine powder finished product elevator 464. The discharge end of the ultrafine powder finished product chute two 462 is connected to the feed port of the ultrafine powder finished product elevator 464 through a pipeline, and the discharge port of the ultrafine powder finished product elevator 464 is connected to the ultrafine powder storage and batching system 500 through a pipeline.

[0095] In this embodiment, the ultrafine grinding system 400 further includes a return powder chute 470. The two ends of the return powder chute 470 are respectively connected to the unqualified powder outlet two 422 of the ultrafine powder separator 420 and the feed port of the ultrafine mill 410 through pipelines.

[0096] In this embodiment, a return powder electromagnet 471 is provided on the return powder chute 470 for removing iron from the material passing through the return powder chute 470.

[0097] In this embodiment, the ultrafine dust collector 430 is provided with an ultrafine dust removal fan 431 and an ultrafine dust removal tower 432. The air inlet of the ultrafine dust removal fan 431 is connected to the ultrafine dust collector 430 through a pipeline, and the air outlet is connected to the ultrafine dust removal tower 432 and the feed port of the ultrafine powder separator 420 through pipelines respectively.

[0098] In this embodiment, the tail-end dust collector 440 is provided with a tail-end dust removal fan 441 and a tail-end dust removal tower 442. The air inlet of the tail-end dust removal fan 441 is connected to the tail-end dust collector 440 through a pipeline, and the air outlet is connected to the tail-end dust removal tower 442 through a pipeline.

[0099] In this embodiment, the air outlet of the tail-end dust removal fan 441 can also be connected to the feed port of the ultrafine powder separator 420 through a pipeline.

[0100] Refer to Figure 5As shown, in this embodiment, the ultrafine powder storage and batching system 500 includes at least one first batching bin 510, at least one second batching bin 520, at least one third batching bin 530, and a mixing device 540; the first batching bin 510 is used to receive the ultrafine powder conveyed by the ultrafine powder grinding system 400, the second batching bin 520 is used to receive the coarse powder conveyed by the coarse powder storage and batching system 300, and the third batching bin 530 is used to receive the external added powder; the mixing device 540 is used to mix and stir the powder conveyed by at least two batching bins.

[0101] In this embodiment, the first batching bin 510, the second batching bin 520, and the third batching bin 530 are all provided with an ultrafine powder batching system 550, and the ultrafine powder batching system 550 is respectively connected to the batching bin and the mixing device 540 through pipelines;

[0102] The first batching bin 510 is further provided with a bulk system 560, and the bulk system 560 directly unloads and applies the ultrafine powder in the first batching bin 510.

[0103] In this embodiment, the bulk system 560 includes a bulk chute 561, a bulk hopper 562, and a bulk hopper dust collector 563. The feed inlet of the bulk chute 561 is connected to the discharge outlet of the first batching bin 510 through a pipeline, and the discharge outlet of the bulk chute 561 is connected to the feed inlet of the bulk hopper 562 through a pipeline. The bulk hopper 562 conveys the ultrafine powder onto the ultrafine powder loading vehicle 702; the bulk hopper dust collector 563 is arranged above the bulk hopper 562 for dust removal.

[0104] In this embodiment, the ultrafine powder batching system 550 is provided with an ultrafine powder batching meter 551. The ultrafine powder batching meter 551 is respectively connected to the batching bin and the mixing device 540 through pipelines, and is used to measure the materials conveyed to the mixing device 540.

[0105] In this embodiment, the ultrafine powder storage and batching system 500 further includes an ultrafine powder storage chute 571 and a coarse powder storage chute 572; the feeding end of the ultrafine powder storage chute 571 is connected to the ultrafine powder grinding system 400 through a pipeline, and the discharging end is connected to the feed inlet of the first batching bin 510 through a pipeline; the feeding end of the coarse powder storage chute 572 is connected to the coarse powder storage and batching system 300 through a pipeline, and the discharging end is connected to the feed inlet of the second batching bin 520 through a pipeline.

[0106] In this embodiment, the ultrafine powder storage and batching system 500 is provided with a plurality of first batching bins 510, and the ultrafine powder storage chute 571 is provided with a plurality of discharging ends corresponding to the first batching bins 510 one by one; the ultrafine powder storage and batching system 500 is provided with a plurality of second batching bins 520, and the coarse powder storage chute 572 is provided with a plurality of discharging ends corresponding to the second batching bins 520 one by one.

[0107] In this embodiment, the feeding end of the ultra-fine powder storage and feeding chute 571 is connected to the discharging port of the ultra-fine powder finished product elevator 464 through a pipeline, and the feeding end of the coarse powder storage and feeding chute 572 is connected to the discharging port of the coarse powder finished product elevator 391 through a pipeline.

[0108] In this embodiment, the ultra-fine powder storage and batching system 500 further includes a product batching chute 580. The ultra-fine powder batching meter 551 is connected to the product batching chute 580 through a pipeline, and the discharging end of the product batching chute 580 is connected to the mixing equipment 540 through a pipeline.

[0109] In this embodiment, a batching chute dust collector 581 is provided at the discharging end of the product batching chute 580.

[0110] In this embodiment, the mixing equipment 540 is a pneumatic suspension mixing equipment, and the specific scheme of this equipment can be referred to in the Chinese patent document CN202942843U.

[0111] The ultra-fine powder storage and batching system 500 further includes a product elevator 590. The feeding port of the product elevator 590 is connected to the mixing equipment 540 through a pipeline, and the discharging port is connected to the storage system 600 through a pipeline.

[0112] In this embodiment, dust collectors are provided at the tops of the first batching bin 510, the second batching bin 520, and the third batching bin 530.

[0113] Refer to Figure 6 As shown, in this embodiment, the storage system 600 includes at least one finished product bin 610, a finished product bin chute 620, and a finished product discharging system 630 corresponding to the finished product bin 610; the feeding end of the finished product bin chute 620 is connected to the ultra-fine powder storage and batching system 500 through a pipeline and is connected to the feeding port of the finished product bin 610 through a pipeline; the finished product discharging system 630 is used for discharging.

[0114] The finished product discharging system 630 includes a finished product discharging chute 631, a loading hopper 632, and a finished product bin hopper dust collector 633. The finished product discharging chute 631 is respectively connected to the discharging port of the finished product bin 610 and the feeding port of the loading hopper 632 through pipelines, and the finished product bin hopper dust collector 633 is arranged above the loading hopper 632.

[0115] In this embodiment, the loading hopper 632 transports the finished product to the finished product loading vehicle 703.

[0116] In this embodiment, a finished product bin dust collector 611 is provided at the top of each finished product bin 610.

[0117] In this embodiment, the feeding end of the finished product bin chute 620 is connected to the discharging end of the product elevator 590 through a pipeline.

[0118] In this embodiment, either a dust collector or a fume collector can adopt a bag filter.

[0119] In this embodiment, the slag or steel slag materials processed by the coarse grinding system 200 can all reach a specific surface area of ≥400±10 m 2 / kg; the ore powder materials processed by the ultrafine grinding system 400 can reach a specific surface area of ≥600 m 2 / kg or a fineness with a sieve residue of ≤35μm less than 1.0%, the processed steel slag fine powder materials can reach a specific surface area of ≥450㎡ / kg or a fineness with a sieve residue of ≤35μm less than 3%, and the processed fly ash materials can reach a surface area of ≥550 m 2 / kg or a fineness with a sieve residue of ≤35μm less than 1.0%.

[0120] As Figure 1 shown, the materials are stored in the discharge pit 110, and a forklift or other feeding device adds the materials to the feeding hopper. The materials are transported from the feeding hopper through a pipeline to the belt scale 120, and after being metered by the belt scale 120, they are transported to the belt conveyor 130. An upstream dust collector 140 is provided at the end of the belt conveyor 130.

[0121] As Figure 2 shown, the belt conveyor 130 transports the materials to the screw conveyor 240, and then transports the materials into the coarse grinding mill 210 for coarse grinding. The coarse-ground powder is output through the powder selection discharge port 211 to the coarse grinding powder separator 220 for powder selection. The qualified powder after powder selection is input into the coarse grinding dust collector 230 through the qualified powder outlet 1 221. The dedusted coarse powder is transported to the coarse powder elevator 290 through the first coarse grinding chute 270 and the second coarse grinding chute 280 (a coarse grinding chute dust collector 281 is provided at the end of the second coarse grinding chute 280), and is input into the top chute 311 of the coarse powder storage and batching system 300 by the coarse powder elevator 290; the unqualified powder after powder selection is transported to the return slag belt 250 through the unqualified powder outlet 1 222. After being de-ironed by the return slag belt magnetic separator 251 on the return slag belt 250, it continues to be transported to the return slag bucket elevator 260, and is transported by the return slag bucket elevator 260 to the screw conveyor 240 and enters the coarse grinding mill 210 for coarse grinding; the unqualified waste slag in the coarse grinding mill 210 is directly output to the return slag belt 250 through the waste slag discharge port 212, and after being de-ironed by the return slag belt magnetic separator 251, it continues to return to the coarse grinding mill 210 for grinding.

[0122] As Figure 3As shown, the coarse powder conveyed by the coarse powder elevator 290 is transported to the coarse powder storage and batching bin 310 through the inclined chute 311 at the top of the bin. The top of the coarse powder storage and batching bin 310 is equipped with a dust collector 312 for the coarse powder storage and batching bin. The coarse powder in the coarse powder storage and batching bin 310 is directly discharged into the coarse powder discharge hopper 321 through the coarse powder discharge inclined chute 320, and then discharged from the coarse powder discharge hopper 321 to the coarse powder loading truck 701 for direct external sales. The coarse powder in the coarse powder storage and batching bin 310 can also be output through the coarse powder rough batching inclined chute 330, and together with the coarse powder from other coarse powder storage and batching bins 310, it is transported to the coarse powder rough batching conveyor inclined chute 390 through the coarse powder rough batching elevator 380, and then transported to the second batching bin 520 of the superfine powder storage and batching system 500 through the coarse powder finished product elevator 391 for subsequent batching. The coarse powder in the coarse powder storage and batching bin 310 can also be transported to the coarse powder meter 341 through the coarse powder fine batching inclined chute 340. After accurate measurement, it is transported to the coarse powder measurement inclined chute 342, and together with the coarse powder from different coarse powder storage and batching bins 310, it is transported to the coarse powder fine batching conveyor inclined chute 370 through the coarse powder fine batching elevator 360. At the same time, the grinding aid batching bin 350 (equipped with a grinding aid dust collector 351 at the top) transports the grinding aid to the grinding aid meter 352. The accurately measured grinding aid is transported through the pipeline to the coarse powder fine batching conveyor inclined chute 370, where it is mixed with the coarse powder and then transported to the superfine powder grinding system 400.

[0123] As Figure 4As shown, in the first mode, the materials conveyed by the coarse powder precise conveying chute 370 first enter the ultrafine mill 410 for ultrafine grinding. After ultrafine grinding, the materials are conveyed to the powder separator lifting machine 451 and then to the powder separator chute 452. After being de-ironed by the powder separator iron remover 453 on the powder separator chute 452, the materials are conveyed to the ultrafine powder separator 420. The qualified materials after powder separation are conveyed to the ultrafine dust collector 430 through the qualified powder outlet two 421. The ultrafine dust collector 430 is successively connected to the ultrafine dust collection fan 431 and the ultrafine dust collection tower 432, and are discharged into the atmosphere after dust removal. The ultrafine dust collection fan 431 is also connected to the ultrafine powder separator 420 at the same time, and the materials collected during the dust removal process are returned to the powder separator for powder separation again to avoid waste. The discharge port of the ultrafine dust collector 430 conveys the materials to the ultrafine powder finished product elevator 464 through the ultrafine powder finished product chute one 461 and the ultrafine powder finished product chute two 462 (the end of the ultrafine powder finished product chute two 462 is provided with an ultrafine powder finished product dust collector 463). The ultrafine powder finished product elevator 464 conveys the qualified ultrafine powder to the ultrafine powder storage and batching system 500 through the ultrafine powder storage chute 571. The unqualified materials after powder separation are conveyed to the return powder chute 470 through the unqualified powder outlet two 422. After being de-ironed by the return powder iron remover 471 on the return powder chute 470, the materials are conveyed into the ultrafine mill 410 for continuous ultrafine grinding. At the same time, one end of the discharge port of the ultrafine mill 410 is also connected with a tail-end dust collector 440. The tail-end dust collector 440 is successively connected to the tail-end dust collection fan 441 and the tail-end dust collection tower 442, and are discharged into the atmosphere after dust removal. The materials collected at the discharge port of the tail-end dust collector 440 are directly conveyed to the powder separator chute 452 through the powder separator lifting machine 451, and then conveyed to the ultrafine powder separator 420 for powder separation to avoid waste.

[0124] In the second mode, the materials conveyed by the coarse powder precise conveying chute 370 first enter the ultrafine powder separator 420 for powder separation. The qualified powder is directly output through the qualified powder outlet two 421. In this way, the raw materials of the ultrafine grinding system 400 (i.e., the materials from the coarse powder storage and batching system 300) can be powder-separated first, and the qualified powder that meets the requirements in the raw materials can be selected first, avoiding the qualified powder in the raw materials from also entering the ultrafine mill 410 for ultrafine grinding, which is beneficial to improving production efficiency and reducing energy consumption.

[0125] As Figure 5As shown in the figure, the ultrafine powder finished product elevator 464 of the ultrafine powder grinding system 400 conveys the ultrafine powder material to the ultrafine powder storage inlet chute 571 and enters the first batching bin 510. The coarse powder finished product elevator 391 of the coarse powder storage and batching system 300 conveys the coarse powder material to the coarse powder storage inlet chute 572 and enters the second batching bin 520. Other additional materials can be stored in the third batching bin 530. The bulk system 560 of the first batching bin 510 can directly unload materials externally. Specifically, the materials in the first batching bin 510 are sequentially conveyed to the ultrafine powder loading vehicle 702 through the bulk chute 561 and the bulk hopper 562. The first batching bin 510 can also be batched through the ultrafine powder batching system 550. Specifically, the materials in the first batching bin 510 are accurately metered by the ultrafine powder batching meter 551 and then input into the product batching chute 580 (a batching chute dust collector 581 is provided at the end of the product batching chute 580), and are jointly input into the mixing equipment 540 with the materials that have been accurately metered by the ultrafine powder batching meter 551 from different first batching bins 510 or second batching bins 520 and third batching bins 530 through the product batching chute 580. The product obtained after mixing is conveyed to the finished product bin chute 620 of the storage system 600 through the product elevator 590.

[0126] In practical applications, according to the material composition requirements, different materials in the first batching bin 510, the second batching bin 520, and the third batching bin 530 can be selected for mixing.

[0127] As Figure 6 shown in the figure, the mixed product in the ultrafine powder storage and batching system 500 is conveyed to the finished product bin chute 620 through the product elevator 590. The finished product bin chute 620 sends the product into the finished product bin 610 for storage. A finished product bin dust collector 611 is provided at the top of the finished product bin 610. The materials in the finished product bin 610 are unloaded through the finished product unloading system 630. Specifically, the materials in the finished product bin 610 are sequentially conveyed to the finished product loading vehicle 703 through the finished product unloading chute 631 and the loading hopper 632 for application or external sales. A finished product bin hopper dust collector 633 is provided above the loading hopper 632.

[0128] Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art and related fields without creative efforts shall fall within the protection scope of the present invention. The structures, devices, and operation methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the art without special instructions and limitations.

Claims

1. A superfine powder production line, characterized in that: It comprises a feeding system (100), a coarse grinding system (200), a coarse powder storage and batching system (300), an ultrafine powder grinding system (400), an ultrafine powder storage and batching system (500) and a storage system (600); The material enters the coarse grinding system (200) from the feeding system (100) for coarse grinding to obtain coarse powder; The coarse powder is input into the coarse powder storage and batching system (300), and the coarse powder storage and batching system (300) directly discharges the powder for use, or the coarse powder is batched and then transported to the ultrafine powder storage and batching system (500) to be mixed with other powders, or the coarse powder is batched and then transported to the ultrafine powder grinding system (400) to be ultrafinely ground to obtain ultrafine powder; Ultrafine powder is input into the ultrafine powder storage and batching system (500), and the ultrafine powder storage and batching system (500) directly discharges the powder for use or mixes different powders and then enters the storage system (600) for storage.

2. The ultrafine powder production line according to claim 1, characterized in that: The coarse grinding system (200) comprises a coarse grinding mill (210), a coarse grinding powder classifier (220) and a coarse grinding dust collector (230), wherein the coarse grinding mill (210) is provided with a powder classifier discharge port (211) and a waste residue discharge port (212), and the coarse grinding powder classifier (220) is provided with a qualified powder outlet port (221) and an unqualified powder outlet port (222); The feed port of the coarse grinding mill (210) is communicated with the feeding system (100) through a pipeline, the powder selection outlet (211) of the coarse grinding mill (210) is communicated with the feed port of the coarse grinding classifier (220) through a pipeline, the qualified powder outlet (221) of the coarse grinding classifier (220) is communicated with the feed port of the coarse grinding dust collector (230) through a pipeline, the waste residue outlet (212) of the coarse grinding mill (210) and the unqualified powder outlet (222) of the coarse grinding classifier (220) are both communicated with the feed port of the coarse grinding mill (210) through a pipeline, and the outlet of the coarse grinding dust collector (230) is communicated with the coarse powder storage and batching system (300) through a pipeline.

3. The ultrafine powder production line according to claim 2, characterized in that: The coarse grinding system (200) further comprises a screw conveyor (240), and two ends of the screw conveyor (240) are respectively connected to the belt conveyor (130) and the feed inlet of the coarse grinding mill (210).

4. The ultrafine powder production line according to claim 3, characterized in that: The coarse grinding system (200) further comprises a slag return belt (250) and a slag return bucket (260), the waste slag discharge port (212) and the unqualified powder outlet port (222) are both connected to one end of the slag return belt (250) through pipelines, and the two ends of the slag return bucket (260) are respectively connected to the slag return belt (250) and the screw conveyor (240); The slag return belt (250) is provided with a slag return iron remover (251) for removing iron from the material transported by the slag return belt (250).

5. The ultrafine powder production line according to claim 1, characterized in that: The coarse powder storage and batching system (300) comprises at least two coarse powder storage and batching depots (310), a coarse powder unloading chute (320), a coarse powder coarse batching chute (330) and a coarse powder fine batching chute (340); The coarse grinding system (200) transports the coarse material to the coarse powder storage and batching warehouse (310); The coarse powder discharge chute (320) is used for direct discharge; The coarse powder coarse distribution chutes (330) of at least two of the coarse powder storage and distribution warehouses (310) are connected to the ultrafine powder storage and distribution system (500) through pipelines; The end of the coarse powder fine mixing chute (340) is connected to a coarse powder meter (341) and a coarse powder metering chute (342) in sequence through a pipeline, and the coarse powder metering chute (342) of at least two of the coarse powder storage and mixing depots (310) are connected to an ultrafine grinding system (400) through a pipeline.

6. The ultrafine powder production line according to claim 5, characterized in that: The coarse powder storage and batching system (300) further comprises a grinding aid batching warehouse (350), and the grinding aid batching warehouse (350) is provided with a grinding aid dust collector (351) and a grinding aid meter (352).

7. The ultrafine powder production line according to claim 1, characterized in that: The ultrafine grinding system (400) comprises an ultrafine grinder (410), an ultrafine powder classifier (420) and an ultrafine dust collector (430), wherein the ultrafine powder classifier (420) is provided with a second qualified powder outlet (421) and a second unqualified powder outlet (422); The coarse powder storage and batching system (300) is connected to the feed inlet of the ultrafine grinding machine (410) and the feed inlet of the ultrafine powder classifier (420) through pipelines respectively; The discharge port of the ultrafine grinding machine (410) is connected to the feed port of the ultrafine powder classifier (420) through a pipeline; The qualified powder outlet 2 (421) of the ultrafine powder classifier (420) is connected to the ultrafine dust collector (430) through a pipeline, and the discharge port of the ultrafine dust collector (430) is connected to the ultrafine powder storage and batching system (500) through a pipeline; The second unqualified powder outlet (422) of the ultrafine powder classifier (420) is connected to the feed port of the ultrafine grinder (410) through a pipeline.

8. The ultrafine powder production line according to claim 1, characterized in that: The ultrafine powder storage and batching system (500) comprises at least one first batching bin (510), at least one second batching bin (520), at least one third batching bin (530) and a stirring device (540); the first batching bin (510) is used to receive the ultrafine powder delivered by the ultrafine grinding system (400), the second batching bin (520) is used to receive the coarse powder delivered by the coarse powder storage and batching system (300), and the third batching bin (530) is used to receive external added powder; the stirring device (540) is used to mix and stir the powder delivered by at least two batching bins.

9. The ultrafine powder production line according to claim 8, characterized in that: The first batching bin (510), the second batching bin (520) and the third batching bin (530) are all provided with an ultrafine powder batching system (550), and the ultrafine powder batching system (550) is respectively connected to the batching bin and the stirring device (540) through pipelines; The first batching bin (510) is also provided with a bulk system (560), and the bulk system (560) directly discharges the ultrafine powder in the first batching bin (510) for use.

10. The ultrafine powder production line according to claim 1, characterized in that: The storage system (600) comprises at least one finished product bin (610), a finished product bin chute (620), and a finished product unloading system (630) corresponding to the finished product bin (610); the feed end of the finished product bin chute (620) is connected to the ultrafine powder storage and batching system (500) through a pipeline, and is connected to the feed port of the finished product bin (610) through a pipeline; the finished product unloading system (630) is used for unloading.

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