Inorganic mineral powder production system
Through a production system combining crushing, wind grading and grinding, the problems of high energy consumption and poor fluidity in inorganic mineral powder production are solved, and powder preparation with good fluidity is achieved, which reduces production costs.
Patent Information
- Application Number
- CN202421831513.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-07-31
AI Technical Summary
The existing inorganic mineral powder production methods lead to high energy consumption, high power consumption, poor fluidity and unstable product quality.
A production system combining crushing, wind grading and grinding is adopted to prepare inorganic mineral powders with good fluidity through particle size grading and mixing processes, reducing equipment energy consumption and production costs.
It improves the fluidity of inorganic mineral powder, reduces the energy consumption of equipment and the amount of additives in the production process, and improves product quality stability.
Smart Images
Figure CN223069659U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of inorganic mineral powder production, and more particularly, to a production system for inorganic mineral powder. Background Art
[0002] Inorganic mineral powder is mainly made from inorganic mineral raw materials in nature. According to different compositions and properties, it can be divided into various types, such as quartz powder, talc powder, calcium carbonate powder, wollastonite powder, mica powder, etc.
[0003] In the prior art, the production method of inorganic mineral powder mainly adopts the methods of crushing and grinding. However, due to the poor fluidity of the inorganic mineral powder produced by this traditional production method during pipeline transportation, it will lead to increased energy consumption and power consumption of the equipment. Due to the fluidity reason, the dosage of additives used in the production process will also be relatively large, and the quality of the product cannot be maintained at a relatively high level, and the stability is also poor.
[0004] In view of this, the present utility model is specifically proposed. Summary of the Utility Model
[0005] The purpose of the present application is to provide a production system for inorganic mineral powder, which can obtain powder with good fluidity. By improving the fluidity of the powder, the energy consumption and power consumption of the equipment are reduced, the dosage of additives in the production process is also reduced, and the effect of reducing production costs can be achieved.
[0006] To achieve the above object, the present utility model provides a production system for inorganic mineral powder, including: a raw material bin, the raw material bin is connected to a crusher, the crusher is connected to a pneumatic classifier, a plurality of bins are arranged downstream of the pneumatic classifier, and the plurality of bins are used to respectively collect a first powder, a second powder and a third powder with gradually decreasing particle sizes. The first powder returns to the crusher for cyclic crushing, and the third powder is mixed by a mixer and then ground, and after grinding, it is mixed with the second powder to obtain a product powder.
[0007] In a further embodiment, the pneumatic classifier includes a jet air inlet and an air separation chamber, and the crusher includes a blanking port at the bottom, and the position of the blanking port is vertically opposite to the position of the jet air inlet.
[0008] In a further embodiment, the jet air inlet is arranged on the side of the air separation chamber and jets air horizontally, and a plurality of hoppers are arranged at the lower part of the air separation chamber. A quantitative feeding valve is arranged at the bottom of each hopper, and the quantitative feeding valve feeds powders with different particle sizes into different bins through pipelines.
[0009] In a further embodiment, there are five hoppers, namely the first hopper, the second hopper, the third hopper, the fourth hopper and the fifth hopper. The silo includes a first silo, a second silo and a third silo. The first powder in the first hopper falls into the first silo, the second powder in the second hopper, the third hopper and the fourth hopper falls into the second silo, and the third powder in the fifth hopper falls into the third silo.
[0010] In a further embodiment, a blast pipe is provided at the bottom of the first silo, and the first powder is circulated back to the crusher through the blast pipe.
[0011] In a further embodiment, a second powder feeder is provided at the bottom of the second silo. The second powder feeder includes a weighing feeder, and a chute is connected to the discharge end of the weighing feeder. The third powder after mixing and grinding is fed into the chute and mixed with the second powder.
[0012] In a further embodiment, a third powder feeder is provided at the bottom of the third silo. The third powder feeder includes a weighing feeder, and the third powder is fed into the coarse material mixer through the third powder feeder for mixing.
[0013] In a further embodiment, the mixer includes a coarse material mixer. The coarse material mixer is externally connected to a process water pipeline, and the coarse material mixer is connected to a coarse material tank through a pipeline. The coarse material tank is connected to a coarse material pump through a pipeline. The coarse material pump is used to pump the third powder in the coarse material tank to the grinder for grinding. A coarse material circulation pipeline for circulating back and discharging is provided between the coarse material mixer and the coarse material pump.
[0014] In a further embodiment, the grinder includes a rod mill or a fine grinder for grinding the mixed third powder. The grinder is connected to a fine material tank through a pipeline, and the fine material tank is connected to a fine material pump through a pipeline. The fine material pump is used to pump the ground third powder to the chute.
[0015] In a further embodiment, the discharge end of the chute is connected to a product mixer. The product mixer is connected to a drum screen, and the discharge port of the drum screen is connected to a product powder tank through a pipeline.
[0016] The raw material is crushed by a crusher to obtain a powder mixture with different particle sizes. Combined with the air classifier for sorting, the powder mixture is classified by gravity and buoyancy to collect inorganic mineral powders with different particle sizes. The first powder with a larger particle size does not meet the conditions for further processing due to its too high particle size, and is returned to the crusher to be combined with the raw material for cyclic crushing.
[0017] The third powder material is mixed with water through a mixer and then ground to obtain ultrafine powder. The second powder material is unground coarse powder. The product powder is obtained by mixing the ultrafine powder with a smaller particle size and the coarse powder with a larger particle size.
[0018] For the product powder produced by the present utility model, by filling the small particle size powder particles into the voids of the large particle size powder particles, the friction condition between the particles can be improved. Through the ratio of different material contents, a mixed product powder with good fluidity is obtained, the quality of the product is improved, and the energy consumption cost during the transportation of the inorganic mineral product powder and the chemical agent cost during the production process are reduced.
[0019] Other features and advantages of the present application will be described in detail in the subsequent specific implementation part. Brief Description of the Drawings
[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation of the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.
[0021] Figure 1 It is a schematic diagram of the overall structure of the inorganic mineral powder production system in the present application.
[0022] Icon:
[0023] 1 - Raw material bin;
[0024] 2 - Crusher; 21 - Discharge opening;
[0025] 3 - Air classifier; 31 - Jet air inlet; 32 - Air separation chamber; 33 - Air outlet; 34 - Hopper; 34a - First hopper; 34b - Second hopper; 34c - Third hopper; 34d - Fourth hopper; 34e - Fifth hopper; 35 - Quantitative feeding valve;
[0026] 4 - Silo; 4a - First silo; 4b - Second silo; 4c - Third silo;
[0027] 5 - Blower pipeline;
[0028] 6 - Second powder feeder; 61 - Chute;
[0029] 7 - Third powder feeder; 71 - Coarse material mixer; 72 - Coarse material chute; 73 - Coarse material pump; 74 - Grinder; 75 - Coarse material circulation pipeline; 76 - Fine material chute; 77 - Fine material pump;
[0030] 8 - Process water pipeline;
[0031] 9 - Product blender; 91 - Drum sieve;
[0032] 10 - Product powder tank. Detailed implementation manners
[0033] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are some, but not all, of the embodiments of this application. Components of the embodiments of this application usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.
[0034] In the description of this application, it should be noted that the orientation or positional relationship indicated by terms such as "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship when the product of this application is usually placed. It is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to this application. In addition, terms such as "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.
[0035] In the description of this application, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.
[0036] The inorganic mineral powder production system in this application is mainly used for the production of inorganic mineral powder. By grinding some of the crushed raw materials and performing grading and mixing on the ground powder and the unground powder, the fluidity of the product powder is improved, thereby reducing the overall cost of the inorganic mineral powder during pipeline transportation and production, and at the same time ensuring the quality of the product powder.
[0037] See Figure 1 , the inorganic mineral powder production system in this application includes a raw material bin 1, and the raw material bin 1 is connected to a crusher 2. The raw materials are mainly crushed by the crusher 2 to obtain a powder mixture with different particle size ranges.
[0038] The crusher 2 is connected to an air classifier 3. The powder mixture is subjected to air separation by the air classifier 3 to classify the powder mixture using gravity and buoyancy, and the powder in different particle size ranges is respectively collected through a plurality of bins 4 arranged downstream of the air classifier 3.
[0039] Specifically, after the powder mixture undergoes air separation, it can form multiple powders in different particle size ranges. Further, multiple groups of powders in different particle size ranges include a first powder, a second powder, and a third powder with gradually decreasing particle sizes. Multiple bins 4 collect the first powder, the second powder, and the third powder respectively for further targeted treatment.
[0040] In the present utility model, the first powder has the largest particle size, specifically less than 20 mesh. Because of the relatively large particle size, the first powder needs to be returned to the crusher 2 for mixing with the raw material for cyclic crushing.
[0041] The second powder has a medium particle size, specifically 20 - 200 mesh, and constitutes the coarse powder component in the product powder.
[0042] The third powder has the smallest particle size, specifically 200 - 300 mesh. After further stirring and mixing with water, it is ground to form the fine powder component in the product powder. The third powder is ground to obtain ultrafine powder, and the ultrafine powder is mixed and stirred with the second powder with medium particle size to obtain the product powder of the production system.
[0043] In the powder production system of the present utility model, by making the ultrafine powder particles and the coarse powder particles match well, the ultrafine powder particles are filled in the gaps between the coarse powder particles, thereby reducing the friction between particles of the same particle size in the powder. By cooperating with a certain mass ratio of ultrafine particles to fill the gaps between the coarse particles, the interactive friction between particles can be changed into rolling friction, which can improve the fluidity of the powder, achieve the reduction of the energy consumption and power consumption of the conveying equipment, reduce the dosage of additives in the production process, and achieve the technical effect of overall reducing the production cost of the powder.
[0044] In one specific embodiment, the air classifier 3 includes a jet air inlet 31 and an air separation chamber 32. The crusher 2 includes a discharge port 21 at the bottom, and the position of the discharge port 21 is vertically opposite to that of the jet air inlet 31. The powder obtained after the crusher 2 crushes falls freely through the discharge port 21 of the crusher 2 into the air separation chamber 32 of the air classifier 3 due to gravity. The sorting air ejected from the jet air inlet 31 blows the falling powder. Due to the difference in the particle size of the powder, the weights of powder particles with different particle sizes also vary, so that powders of different particle sizes are discharged at different positions in the direction of the sorting air jet in combination with the jet wind force and the self - weight of particles of different particle sizes, and further sorting is obtained.
[0045] Furthermore, the jet air inlet 31 is arranged on the side of the air separation chamber 32 and blows out air horizontally. A plurality of hoppers 34 are arranged at the lower part of the air separation chamber 32, which can make powders with different particle sizes fall into different hoppers 34 respectively, so as to realize the collection of powders with different particle sizes.
[0046] An air outlet 33 is arranged on the other side of the air separation chamber 32. The separated air is discharged from the air outlet 33 and further introduced into an external tail gas absorption tower for purification treatment and then discharged.
[0047] A metering feed valve 35 is arranged at the bottom of each hopper 34. The metering feed valve 35 feeds powders with different particle sizes into different bins 4 through pipelines, so as to realize metering feeding and improve the control accuracy of different particle gradations.
[0048] Furthermore, there are five hoppers 34, including a first hopper 34a, a second hopper 34b, a third hopper 34c, a fourth hopper 34d and a fifth hopper 34e arranged in sequence along the air outlet direction, which are used to collect different falling powders with gradually decreasing particle sizes. Specifically, the particle size of the falling powder in the first hopper 34a is less than 20 mesh, the particle size of the falling powder in the second hopper 34b is 20 - 40 mesh, the particle size of the falling powder in the third hopper 34c is 40 - 100 mesh, the particle size of the falling powder in the fourth hopper 34d is 100 - 200 mesh, and the particle size of the falling powder in the fifth hopper 34e is 200 - 300 mesh.
[0049] The particle sizes of the powders in the above different hoppers 34 can be controlled by adjusting the blowing pressure of the jet air inlet 31 to correspondingly obtain the particle size components of different hoppers 34.
[0050] Specifically, the bins 4 arranged at the lower part of the air classifier 3 include a first bin 4a, a second bin 4b and a third bin 4c. The first powder with a particle size less than 20 mesh in the first hopper 34a falls into the first bin 4a, and the second powder, which is the coarse powder with a particle size of 20 - 200 mesh in the second hopper 34b, the third hopper 34c and the fourth hopper 34d, falls into the second bin 4b. The third powder with a particle size of 200 - 300 mesh in the fifth hopper 34e falls into the third bin 4c, so that the first bin 4a, the second bin 4b and the third bin 4c respectively obtain unqualified ultra - coarse powders, coarse powders with medium particle size levels and fine powders with smaller particle sizes.
[0051] A blast pipe 5 is arranged at the bottom of the first bin 4a. The blast pipe 5 is externally connected with a blower, which is used to blow air into the blast pipe 5. The ultra - coarse powder with a particle size less than 20 mesh of the first powder does not meet the mixing requirements and is cycled back to the crusher 2 through the blast pipe 5 connected to the blower and mixed with the raw materials for crushing.
[0052] A second powder feeder 6 is provided at the bottom of the second bin 4b. The second powder feeder 6 is specifically a weighing feeder to achieve quantitative feeding of the coarse powder. The discharge end of the second powder feeder 6 is connected to a chute 61. The third powder after mixing and grinding is transported to the chute 61 and mixed with the coarse powder of the second powder.
[0053] From the perspective of grinding the third powder, a third powder feeder 7 is provided at the bottom of the third bin 4c. The third powder feeder 7 includes a weighing feeder to achieve quantitative feeding of the fine powder. The third powder is fed into a mixer through the third powder feeder 7 for mixing.
[0054] Before the fine powder is ground, it needs to be stirred with water. Specifically, after the third powder is output from the third powder feeder 7, it is fed into a coarse material mixer 71 downstream of the third powder feeder 7. The coarse material mixer 71 is connected to a coarse material tank 72 through a pipeline. The coarse material mixer 71 is externally connected to a process water pipeline 8. After the third powder and water are stirred and mixed in the coarse material mixer 71, they are transported to the coarse material tank 72 through a pipeline for storage.
[0055] The coarse material tank 72 is connected to a coarse material pump 73 through a pipeline. The coarse material pump 73 is used to pressurize and pump the third powder in the coarse material tank 72 to a grinder 74 for grinding to further grind the fine powder of 200 - 300 meshes.
[0056] Meanwhile, a coarse material circulation pipeline 75 for circulating and discharging is provided between the coarse material mixer 71 and the coarse material pump 73, which is used to circulate the fine powder in the coarse material tank 72 into the coarse material mixer 71 through the coarse material circulation pipeline 75 to enhance the stirring and mixing effect.
[0057] The grinder 74 includes a rod mill or a fine grinder, which is used to grind the mixed third powder until it is ground into an ultrafine powder with a particle size of 350 - 600 meshes.
[0058] The grinder 74 is connected to a fine material tank 76 through a pipeline. The fine material tank 76 is mainly used to store the ultrafine powder obtained after grinding. The fine material tank 76 is connected to a fine material pump 77 through a pipeline. Under the action of the fine material pump 77, the ultrafine powder is pressurized and pumped, so that the fine material pump 77 pumps the ground ultrafine powder to the chute 61.
[0059] In the above structural settings, the coarse material mixer 71, the coarse material tank 72, the coarse material pump 73, and the coarse material circulation pipeline 75 are mainly used for the stirring, mixing, storage, transfer, and circulation of the fine powder before grinding, while the fine material tank 76 and the fine material pump 77 downstream of the fine grinder are mainly used for the storage, transfer, and circulation of the ultrafine powder after grinding. Here, a special explanation is made.
[0060] The discharge end of the chute 61 is connected to a product mixer 9. The ultrafine powder and the coarse powder are mixed on the chute 61 and then fed into the product mixer 9, where they are further mixed and stirred to obtain the product powder.
[0061] The product mixer 9 is connected to a drum sieve 91. The product powder obtained by mixing and stirring the ultrafine powder and the coarse powder inside the product mixer 9 enters the drum sieve 91, and after screening and filtering in the drum sieve 91, the product powder is finally obtained.
[0062] The discharge port of the drum sieve 91 is connected to a product powder tank 10 through a pipeline. The final product powder after screening and filtering is stored in the product powder tank 10 for further transportation.
[0063] The product powder prepared by the inorganic mineral powder production system in the present utility model can greatly improve the fluidity of the powder and optimize the particle size distribution of the powder to the greatest extent.
[0064] It should be noted that, without conflict, the features in the embodiments of this application can be combined with each other.
[0065] The above are only the preferred embodiments of this application and are not intended to limit this application. For those skilled in the art, this application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included within the protection scope of this application.
Claims
1. An inorganic mineral powder production system, characterized in that, Including: A raw material bin, the raw material bin is connected with a crusher, the crusher is connected with an air classifier, there are multiple bins arranged downstream of the air classifier, and the multiple bins are used to collect the first powder, the second powder and the third powder with gradually decreasing particle sizes respectively. The first powder returns to the crusher for cyclic crushing, and the third powder is mixed by a mixer and then ground, and after grinding, it is mixed with the second powder to obtain a product powder.
2. The inorganic mineral powder production system according to claim 1, characterized in that The air classifier includes a jet air inlet and an air separation chamber, and the crusher includes a blanking port at the bottom, and the positions of the blanking port and the jet air inlet are vertically opposite.
3. The inorganic mineral powder production system according to claim 2, characterized in that, The jet air inlet is arranged on the side of the air separation chamber and jets air horizontally. A plurality of hoppers are arranged at the lower part of the air separation chamber, and a metering feed valve is arranged at the bottom of each hopper. The metering feed valve drops powders with different particle sizes into different bins through pipelines.
4. The inorganic mineral powder production system according to claim 3, characterized in that, There are five hoppers, including the first hopper, the second hopper, the third hopper, the fourth hopper and the fifth hopper respectively. The bins include the first bin, the second bin and the third bin. The first powder in the first hopper drops into the first bin, the second powder in the second hopper, the third hopper and the fourth hopper drops into the second bin, and the third powder in the fifth hopper drops into the third bin.
5. The inorganic mineral powder production system according to claim 4, wherein A blast pipe is arranged at the bottom of the first bin, and the first powder returns to the crusher through the blast pipe cyclically.
6. The inorganic mineral powder production system according to claim 4, characterized in that, A second powder feeder is arranged at the bottom of the second bin. The second powder feeder includes a weighing feeder, and the discharge end of the weighing feeder is connected with a chute. The third powder after mixing and grinding is fed into the chute and mixed with the second powder.
7. The inorganic mineral powder production system according to claim 6, characterized in that, A third powder feeder is arranged at the bottom of the third bin. The third powder feeder includes a weighing feeder, and the third powder is fed into a coarse material mixer through the third powder feeder for mixing.
8. The inorganic mineral powder production system according to claim 7, wherein, The coarse material mixer is externally connected with a process water pipeline, and the coarse material mixer is connected with a coarse material tank through a pipeline. The coarse material tank is connected with a coarse material pump through a pipeline. The coarse material pump is used to pump the third powder in the coarse material tank to a grinding machine for grinding. A coarse material circulation pipeline for cyclic backflow is arranged between the coarse material mixer and the coarse material pump.
9. The inorganic mineral powder production system according to claim 8, characterized in that, The grinding machine includes a rod mill or a fine mill, which is used to grind the mixed third powder. The grinding machine is connected with a fine material tank through a pipeline. The fine material tank is connected with a fine material pump through a pipeline. The fine material pump is used to pump the ground third powder to the chute.
10. The inorganic mineral powder production system according to claim 9, characterized in that, The discharge end of the chute is connected with a product mixer, the product mixer is connected with a drum screen, and the discharge port of the drum screen is connected with a product powder tank through a pipeline.