阅读说明：本技术 一种基于辊压机的水泥终粉磨系统 (Cement finish grinding system based on roller press ) 是由 李明飞 汪伟 刘万平 金春华 于 2021-07-27 设计创作，主要内容包括：本发明公开了一种基于辊压机的水泥终粉磨系统,包括辊压机,稳料仓、V型选粉机、除铁装置,提升机、多转子动态选粉机、旋风收尘器、风机、收尘器和球磨机组成,所述提升机的进料口与来自水泥配料站的皮带传送装置相连,且提升机的出料口经除铁装置与V型选粉机的进料口相连。本发明所述的一种基于辊压机的水泥终粉磨系统,辊压机及多转子动态选粉机为核心设备的辊压机终粉磨系统,保证了合理的成品颗粒级配,进而保证的水泥的质量,同时通过合理设计工艺流程,最大限度发挥了辊压机的效率,实现了产量提高；降低了系统内循环粉磨的物料比例进而降低了能耗,利用了原有球磨机粉磨系统中部分设备,在实现提产降耗的基础上控制了成本。(The invention discloses a cement final grinding system based on a roller press, which comprises the roller press, a material stabilizing bin, a V-shaped powder concentrator, an iron removal device, a lifter, a multi-rotor dynamic powder concentrator, a cyclone dust collector, a fan, a dust collector and a ball mill, wherein a feed inlet of the lifter is connected with a belt conveying device from a cement batching station, and a discharge outlet of the lifter is connected with a feed inlet of the V-shaped powder concentrator through the iron removal device. According to the cement final grinding system based on the roller press, the roller press and the multi-rotor dynamic powder concentrator are used as the roller press final grinding system of core equipment, so that reasonable finished product particle grading is guaranteed, the quality of cement is guaranteed, meanwhile, the efficiency of the roller press is exerted to the maximum extent through reasonable design of a process flow, and the yield is improved; the material proportion of the circulating grinding in the system is reduced, so that the energy consumption is reduced, and the cost is controlled on the basis of realizing yield improvement and consumption reduction by utilizing part of equipment in the original ball mill grinding system.)

1. The utility model provides a cement finish grinding system based on roll squeezer which characterized in that: comprises a roller press (1), a material stabilizing bin (2), a V-shaped powder concentrator (3), an iron removing device (4), an elevator (5), a multi-rotor dynamic powder concentrator (6), a cyclone dust collector (7), a fan (8), a dust collector (9) and a ball mill (10), wherein a feed inlet of the elevator (5) is connected with a belt conveyer from a cement batching plant, a discharge hole of the elevator (5) is connected with a feed inlet of the V-shaped powder concentrator (3) through the iron removing device (4), a coarse material outlet of the V-shaped powder concentrator (3) is connected with the material stabilizing bin (2), a fine material outlet of the V-shaped powder concentrator (3) is connected with the multi-rotor dynamic powder concentrator (6), a feed inlet of the material stabilizing bin (2) is connected to the roller press (1), a discharge hole of the roller press (1) is connected with the feed inlet of the elevator (5), a finished material outlet of the multi-rotor dynamic powder concentrator (6) is connected with the cyclone dust collector (7), and the coarse material outlet of the multi-rotor dynamic powder concentrator (6) is connected to a conveying device, the discharge end of the conveying device is connected with the feed inlet of the ball mill (10), the discharge hole of the cyclone dust collector (7) is connected with the conveying device, the air outlet of the cyclone dust collector (7) is connected with the fan (8), the outlet of the fan (8) is connected with the circulating air path of the system, the circulating air path is connected with the dust collector (9), and the discharge hole of the dust collector (9) is connected with the finished product conveying device.

2. The cement finish grinding system based on the roller press as claimed in claim 1, wherein: the cement final grinding system based on the roller press specifically comprises the following steps when in use:

the method comprises the following steps: the proportioned raw materials are fed into a lifting machine (5) through a conveying belt, and the lifting machine (5) carries the materials to be fed into a feeding hole of a V-shaped powder concentrator (3);

step two: when the materials enter the V-shaped powder concentrator (3), high-temperature flue gas from a fan (8) or a cement kiln system enters the V-shaped powder concentrator (3) from an air inlet of the V-shaped powder concentrator (3), and the raw materials and hot air are mixed in the V-shaped powder concentrator (3) to realize drying and preliminary separation of the raw materials;

step three: the coarse powder separated by the V-shaped powder separator (3) enters a material stabilizing bin (2) from a coarse powder discharge port of the V-shaped powder separator (3), the material is fed into the roller press (1) by the material stabilizing bin (2) at constant pressure according to preset parameters, the coarse powder is ground by the roller press (1), then is sent back to a feed port of the elevator (5), and is fed into the V-shaped powder separator (3) again by the elevator (5) together with new raw materials;

step four: fine materials separated by the V-shaped powder separator (3) are conveyed to a multi-rotor dynamic powder separator (6) by airflow, fine powder meeting the fineness requirement is separated by the multi-rotor dynamic powder separator (6), qualified fine powder is continuously carried to a cyclone dust collector (7) by the airflow to complete gas-solid separation, and the separated fine powder is a qualified final product and enters a finished product warehouse by a conveying device;

step five: discharging unqualified materials sorted by the multi-rotor dynamic powder selector (6) into a ball mill (10) in a grinding system of the ball mill (10) through a discharge port, continuously circulating according to the process flow of the grinding system of the ball mill (10), finally producing qualified products, and feeding the qualified products into a finished product warehouse through a conveying device;

step six: the tail gas subjected to gas-solid separation by the cyclone dust collector (7) still contains a certain amount of powder materials, the tail gas enters the dust removal device through the system air path to be subjected to secondary gas-solid separation, the separated powder materials are transferred to a finished product warehouse through the discharge port transfer paper conveying device, and the tail gas enters the tail gas treatment system.

3. The cement finish grinding system based on the roller press as claimed in claim 2, wherein: in the fourth step, the multi-rotor dynamic powder concentrator (6) is provided with more than two rotors.

Technical Field

The invention relates to the field of cement production, in particular to a cement final grinding system based on a roller press.

Background

In the cement industry, a roll squeezer is widely used for crushing materials such as raw materials and cement, when the roll squeezer is used for cement powder, a combined grinding system is formed by the roll squeezer and a ball mill at present, a secondary system can ensure that a final cement product meets quality requirements, the working process of the system is generally that a new material is crushed by the roll squeezer and then is fed into a V-shaped powder concentrator by a conveyer such as a hoister for primary selection and drying, a coarse material returns to a stable bin of the roll squeezer again and then enters the roll squeezer for crushing again, a fine material is brought into a cyclone dust collector by gas and is collected as a semi-finished product to be fed into the ball mill for secondary grinding, the material discharged from the ball mill is separated by a dynamic powder concentrator, a qualified product is collected by the dust collector, and the coarse powder continues to return to the ball mill for grinding, so that a cement finished product meeting the quality requirements is manufactured, the ball mill repeatedly grinds the material in the above process and cannot completely release productivity, the efficiency is low, and the system has a roller press and a ball mill, so that the energy consumption of the system is higher;

if only a roller press is used in the system and ball milling is not used, the process flow can be obviously simplified, the system efficiency is improved, and the system energy consumption is reduced, but due to the working mechanism of the roller press, the grading of materials ground by the roller press is unreasonable, the particle fineness is high in consistency, the water consumption of final cement products is large, the setting time is short, the durability of cement is influenced, and the use of cement is influenced.

Disclosure of Invention

The invention mainly aims to provide a cement final grinding system based on a roller press, which can effectively solve the technical problems in the background technology.

In order to achieve the purpose, the invention adopts the technical scheme that:

a cement final grinding system based on a roller press comprises the roller press, a material stabilizing bin, a V-shaped powder concentrator, an iron removing device, a lifter, a multi-rotor dynamic powder concentrator, a cyclone dust collector, a fan, a dust collector and a ball mill, wherein a feed inlet of the lifter is connected with a belt conveying device from a cement batching station, the material lifting inlet is connected with the material stabilizing bin, a coarse material outlet of the V-shaped powder concentrator is connected with the material stabilizing bin, a fine material outlet of the V-shaped powder concentrator is connected with the multi-rotor dynamic powder concentrator, a feed inlet of the material stabilizing bin is connected to the roller press, a discharge outlet of the roller press is connected with the feed inlet of the lifter, a finished material outlet of the multi-rotor dynamic powder concentrator is connected with the cyclone dust collector, the coarse material outlet of the multi-rotor dynamic powder concentrator is connected with the conveying device, a discharge end of the conveying device is connected with the feed inlet of the ball mill, and the discharge outlet of the cyclone dust collector is connected with the conveying device, the air outlet of the cyclone dust collector is connected with the fan, the outlet of the fan is connected with the circulating air path of the system, the circulating air path is connected with the dust collector, and the discharge port of the dust collector is connected with the finished product conveying device.

As a further scheme of the invention, the cement finish grinding system based on the roller press comprises the following steps when in use:

the method comprises the following steps: the proportioned raw materials are fed into a lifter through a conveying belt, and the lifter carries the materials to be fed into a feeding hole of a V-shaped powder concentrator;

step two: when the materials enter the V-shaped powder concentrator, high-temperature flue gas from a fan or a cement kiln system enters the V-shaped powder concentrator from an air inlet of the V-shaped powder concentrator, and the raw materials and hot air are mixed in the V-shaped powder concentrator to realize drying and preliminary separation of the raw materials;

step three: the coarse powder separated by the V-shaped powder separator enters a material stabilizing bin from a coarse powder discharge port of the V-shaped powder separator, the material is fed into a roller press by the material stabilizing bin at constant pressure according to preset parameters, the coarse powder is ground by the roller press and then sent back to a feed port of an elevator, and the coarse powder and a new raw material are fed into the V-shaped powder separator again by the elevator;

step four: the fine materials separated by the V-shaped powder separator are conveyed to a multi-rotor dynamic powder separator by airflow, the multi-rotor dynamic powder separator separates fine powder meeting the fineness requirement, the qualified fine powder is continuously carried to a cyclone dust collector by the airflow to complete gas-solid separation, and the separated fine powder is a qualified final product and enters a finished product warehouse by a conveying device;

step five: discharging unqualified materials sorted by the multi-rotor dynamic powder selector into a ball mill in a ball mill grinding system through a discharge port, continuously circulating according to the process flow of the ball mill grinding system, finally producing qualified products, and feeding the qualified products into a finished product warehouse through a conveying device;

step six: the tail gas after gas-solid separation by the cyclone dust collector still contains a certain amount of powder materials, the tail gas enters the dust removal device through the system air path for secondary gas-solid separation, the separated powder materials are transferred to a finished product warehouse through the discharge port transfer paper conveying device, and the tail gas enters the tail gas treatment system.

As a further scheme of the invention, in the fourth step, the multi-rotor dynamic powder concentrator is provided with more than two rotors, so that the selected particles meeting the fineness requirement have reasonable gradation simultaneously.

Compared with the prior art, the invention has the following beneficial effects:

the invention adopts the roller press and the multi-rotor dynamic powder concentrator as the final grinding system of the roller press of the core equipment, thereby ensuring the reasonable finished product grain composition and further ensuring the quality of cement, and simultaneously, by reasonably designing the process flow, the efficiency of the roller press is exerted to the maximum extent, and the yield is improved; the material proportion of the circulating grinding in the system is reduced, so that the energy consumption is reduced, and the cost is controlled on the basis of realizing yield improvement and consumption reduction by utilizing part of equipment in the original ball mill grinding system.

Drawings

Fig. 1 is a system diagram of a cement final grinding system based on a roller press.

In the figure: 1. a roll squeezer; 2. a material stabilizing bin; 3. a V-shaped powder concentrator; 4. a deironing device; 5. a hoist; 6. multi-rotor dynamic powder selecting machine; 7. a cyclone dust collector; 8. a fan; 9. a dust collector; 10. a ball mill.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in figure 1, a cement final grinding system based on a roller press comprises a roller press 1, a material stabilizing bin 2, a V-shaped powder concentrator 3, an iron removing device 4, an elevator 5, a multi-rotor dynamic powder concentrator 6, a cyclone dust collector 7, a fan 8, a dust collector 9 and a ball mill 10, wherein a feed inlet of the elevator 5 is connected with a belt conveying device from a cement batching plant, a discharge outlet of the elevator 5 is connected with a feed inlet of the V-shaped powder concentrator 3 through the iron removing device 4, a coarse material outlet of the V-shaped powder concentrator 3 is connected with the material stabilizing bin 2, a fine material outlet of the V-shaped powder concentrator 3 is connected with the multi-rotor dynamic powder concentrator 6, a feed inlet of the material stabilizing bin 2 is connected with the roller press 1, a discharge outlet of the roller press 1 is connected with the feed inlet of the elevator 5, a finished material outlet of the multi-rotor dynamic powder concentrator 6 is connected with the cyclone dust collector 7, and a coarse material outlet of the multi-rotor dynamic powder concentrator 6 is connected with the conveying device, the discharge end of the conveying device is connected with the feed inlet of the ball mill 10, the discharge hole of the cyclone dust collector 7 is connected with the conveying device, the air outlet of the cyclone dust collector 7 is connected with the fan 8, the outlet of the fan 8 is connected with the circulating air path of the system, the circulating air path is connected with the dust collector 9, and the discharge hole of the dust collector 9 is connected with the finished product conveying device.

The cement final grinding system based on the roller press specifically comprises the following steps when in use:

the method comprises the following steps: the proportioned raw materials are fed into a lifting machine 5 through a conveying belt, and the lifting machine 5 carries the materials to be fed into a feeding hole of a V-shaped powder concentrator 3;

step two: when the materials enter the V-shaped powder concentrator 3, high-temperature flue gas from a fan 8 or a cement kiln system enters the V-shaped powder concentrator 3 from an air inlet of the V-shaped powder concentrator 3, and the raw materials and hot air are mixed in the V-shaped powder concentrator 3 to realize the drying and preliminary separation of the raw materials;

step three: the coarse powder separated by the V-shaped powder separator 3 enters a material stabilizing bin 2 from a coarse powder discharge port of the V-shaped powder separator 3, the material is fed into a roller press 1 by the material stabilizing bin 2 at constant pressure according to preset parameters, the coarse powder is ground by the roller press 1 and then is sent back to a feed port of a lifter 5, and the coarse powder and new raw materials are fed into the V-shaped powder separator 3 again by the lifter 5;

step four: the fine materials separated by the V-shaped powder separator 3 are conveyed to a multi-rotor dynamic powder separator 6 by airflow, the multi-rotor dynamic powder separator 6 separates fine powder meeting the fineness requirement, the qualified fine powder is continuously carried by the airflow to a cyclone dust collector 7 to complete gas-solid separation, and the separated fine powder is a qualified final product and enters a finished product warehouse by a conveying device;

step five: discharging unqualified materials sorted by the multi-rotor dynamic powder selector 6 into the ball mill 10 in the grinding system of the ball mill 10 through a discharge port, continuously circulating according to the process flow of the grinding system of the ball mill 10, finally producing qualified products, and entering a finished product warehouse through a conveying device;

step six: the tail gas after gas-solid separation by the cyclone dust collector 7 still contains a certain amount of powder materials, the tail gas enters the dust removal device through the air path of the system for secondary gas-solid separation, the separated powder materials are transferred to a finished product warehouse through the transfer paper conveying device at the discharge port, and the tail gas enters the tail gas treatment system.

In the fourth step, the multi-rotor dynamic powder concentrator 6 is provided with more than two rotors, so that the selected particles meeting the fineness requirement have reasonable gradation.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.