Superfine powder production system and production process flow

Abstract

The invention relates to the technical field of powder processing, and particularly discloses a superfine powder production system and a production process flow, and the superfine powder production system comprises a superfine powder microbead sorting system and a superfine grinding sorting system which communicate with each other, the superfine powder and microbead sorting system comprises a raw material feeding device, a first-stage grading device, a second-stage grading device and a microbead powder subpackaging device which are arranged in series, and the superfine grinding and sorting system comprises a superfine grinding and batching device and a superfine grinding and grading device which are arranged in series. According to the superfine powder microbead sorting system, microbead products with different mesh numbers are controlled to be selected through two-stage sorting, or participate in grinding and sorting or serve as filling materials for replacing talcum powder, silica powder, ground calcium carbonate and the like in the coating industry; the superfine grinding and sorting system sorts superfine powder products of different mesh numbers after grinding through a superfine powder ball mill, the particle size is small, the distribution range is wide, and superfine powder of different particle sizes serves as building materials or reinforcing materials to replace carbon black and the like in the rubber industry and plastic products.

Description

Technical Field

[0001] The present invention relates to the technical field of powder processing, and particularly relates to an ultrafine powder production system and a production process flow. Background Art

[0002] Fly ash is a finely dispersed solid waste, with its components being silicate aluminates and also containing elements such as iron and calcium, mainly existing in the forms of oxides, unburned carbon, etc. Fly ash has characteristics such as multiple pores and a large specific surface area, and also has active groups such as SiO2 and Al2O3. It is a multi-functional powdery mineral resource with great market value. At present, for fly ash, especially the fine powder therein, it is all obtained by sorting. The sorted fly ash can be applied in multiple fields: it can be used to make filling fly ash blocks for high-rise buildings, fly ash wallboards for interior walls, and load-bearing wall materials, etc., and can also be used to make fly ash concrete, fly ash cement, etc. However, the existing treatment system for fly ash has poor classification effect on the coarse powder and fine powder in fly ash, resulting in waste of resources, low sorting efficiency, and inconvenience for popularization. Therefore, it is necessary to propose an improvement to the ultrafine powder production system and the production process flow to fully exploit the high added value of fly ash. Summary of the Invention

[0003] The purpose of the present invention is to solve the problems in the prior art and provide an ultrafine powder production system and a production process flow.

[0004] The technical solution of the present invention is as follows: An ultrafine powder production system includes an ultrafine powder microsphere sorting system and an ultrafine grinding and sorting system. The ultrafine powder microsphere sorting system and the ultrafine grinding and sorting system are connected through pipelines. The ultrafine powder microsphere sorting system includes a raw material feeding device, a primary classification device, a secondary classification device, and a microsphere powder packaging device. The raw material feeding device, the primary classification device, the secondary classification device, and the microsphere powder packaging device are arranged in series in sequence. The ultrafine grinding and sorting system includes an ultrafine grinding batching device and an ultrafine grinding classification device. The ultrafine grinding batching device and the ultrafine grinding classification device are arranged in series.

[0005] Preferably, the raw material feeding device includes a raw material warehouse and a primary classification buffer bin arranged in series. There is a chute 1 between the raw material warehouse and the primary classification buffer bin, and a rotor scale feeder is arranged at the bottom of the raw material warehouse.

[0006] Preferably, the primary classification device includes a primary vertical single-rotor classifier and a primary selected powder coarse powder bin. The primary vertical single-rotor classifier and the primary selected powder coarse powder bin are arranged in series.

[0007] Preferably, the secondary classification device includes a bag filter I, a secondary vertical single-rotor classifier, and an ultra-fine classification coarse powder bin, and the bag filter I, the secondary vertical single-rotor classifier, and the ultra-fine classification coarse powder bin are arranged in series in sequence.

[0008] Preferably, the outlet ends of the primary powder selection coarse powder bin and the ultra-fine classification coarse powder bin are connected with a chute II, and the chute II is communicated with the chute I through a pipeline.

[0009] Preferably, the micro-bead powder packaging device includes a cyclone collector, a bag filter II, and an ultra-fine powder bin, and the cyclone collector, the bag filter II, and the ultra-fine powder bin are arranged in series in sequence. A sub-fine powder bin is also arranged on the cyclone collector, and both the ultra-fine powder bin and the sub-fine powder bin are communicated with a ton bag packing machine I.

[0010] Preferably, the ultra-fine grinding batching device includes a slag feeder, a pre-grinding ball mill dust collector, a slag pre-grinding ball mill, and an ultra-fine powder ball mill. The pre-grinding ball mill dust collector and the slag pre-grinding ball mill are arranged in parallel, and are respectively arranged in series with the slag feeder and the ultra-fine powder ball mill in sequence. The chute II is arranged in series on the ultra-fine powder ball mill, and a mill tail dust collector is arranged at the outlet end of the ultra-fine powder ball mill.

[0011] Preferably, the ultra-fine grinding classification device includes an ultra-fine powder special classifier and a bag collector I arranged in series. The mill tail dust collector is arranged in series at the inlet end of the ultra-fine powder special classifier. The powder at the outlet end of the bag collector I is divided into two paths. One path is conveyed to the building material bin, and the other path is conveyed to the ultra-fine classification buffer bin. An upright multi-rotor ultra-fine classifier, a bag collector II, and a product bin are arranged in series on the ultra-fine classification buffer bin. The product bin is provided with two groups, and the two groups of product bins are connected in parallel with a ton bag packing machine II.

[0012] Preferably, the upright multi-rotor ultra-fine classifier is communicated with the ultra-fine classification coarse powder bin through a pipeline.

[0013] An ultra-fine powder production process flow includes the following steps: S1. Ultra-fine powder micro-bead sorting S1.1. The powder in the raw material warehouse is conveyed to the primary classification buffer bin through the chute I; S1.2. The powder in the primary classification buffer bin is sent to the primary vertical single-rotor classifier for primary classification; S1.2.1. The powder with a particle size mesh number greater than 180 meshes is conveyed to the primary powder selection coarse powder bin for temporary storage; S1.2.2. The powder with a particle size mesh number less than 180 meshes is collected by the bag filter I and then sent to the secondary vertical single-rotor classifier for secondary classification; S1.2.2.1. The powder with a particle size mesh number of 250 - 300 meshes is conveyed to the ultra-fine classification coarse powder bin for temporary storage; S1.2.2.2. The powder with a particle size larger than 4000 mesh enters the cyclone collector. After being classified by the cyclone collector, it is collected by the second bag filter and transported to the ultra-fine powder bin. S1.2.2.3. The micro-bead powder with a particle size of 800 - 1400 mesh is transported to the sub-fine powder bin. S1.2.2.4. The powder in the ultra-fine powder bin and the sub-fine powder bin is packed into small bag finished products or ton bag finished products by the first ton bag packing machine. S1.2.3. The powder in the primary powder selection coarse powder bin and the ultra-fine classification coarse powder bin is transported to the ultra-fine powder ball mill through the first chute. S2. Ultra-fine grinding and separation S2.1. Ultra-fine grinding batching S2.1.1. The massive raw materials are metered and enter the slag pre-grinding ball mill through the slag feeder for pre-grinding. After pre-grinding, they are transported to the ultra-fine powder ball mill. S2.1.2. The powder that does not need pre-grinding is transported to the pre-grinding ball mill dust collector through the slag feeder and then sent to the ultra-fine powder ball mill. S2.1.3. The coarse powder in the raw material warehouse is transferred to the second chute through the first chute and then enters the ultra-fine powder ball mill. The powder in the primary powder selection coarse powder bin and the ultra-fine classification coarse powder bin both enter the ultra-fine powder ball mill through the second chute. S2.2. Ultra-fine powder ultra-fine grinding and classification S2.2.1. The material ground by the ultra-fine powder ball mill is collected by the mill tail dust collector and then enters the special ultra-fine powder separator. S2.2.1.1. The powder with a particle size less than 800 mesh returns to the ultra-fine powder ball mill. S2.2.1.2. The powder with a particle size larger than 800 mesh is collected by the first bag collector and transported in two routes. S2.2.1.2.1. One route of the powder collected by the bag collector is transported to the building material bin. S2.2.1.2.2. The other route of the powder collected by the bag collector is transported to the ultra-fine classification buffer bin and then sent to the vertical multi-rotor ultra-fine classifier for classification. S2.2.1.2.2.1. The powder with a particle size less than 600 mesh returns to the ultra-fine classification coarse powder bin. S2.2.1.2.2.2. For the powder with a particle size larger than 1200 mesh, different high-mesh ultra-fine powders are obtained by setting the parameters of the classifier, collected by the second bag collector and then enter the product bin, and are packed into small bag finished products or ton bag finished products by the second ton bag packing machine.

[0014] The present invention adopts the above structure and has the following advantages: 1. The ultrafine powder microbead sorting system can control the selection of microbead products with different mesh numbers through the two-stage sorting device set. The coarse powder selected is transported to the ultrafine powder grinding and sorting system for grinding and sorting. The fine powder selected is collected and packaged as finished products, which can be used as filling materials to replace talcum powder, silica powder, heavy calcium carbonate, etc. in the coating industry; 2. After the material is ground by the ultrafine powder ball mill, it is sorted by the special powder separator for ultrafine powder to obtain ultrafine grinding powder products with different mesh numbers. Its particle size is small and the distribution range is wide. The ultrafine powder with different particle sizes can be used as building materials or as reinforcing materials to replace carbon black, etc. in the rubber industry and plastic products; 3. It broadens the application industries of fly ash, improves the recycling of fly ash, reduces energy consumption and at the same time reduces the environmental pollution caused by mining. Description of the Drawings

[0015] Figure 1 It is a process flow schematic diagram of the ultrafine powder microbead sorting system of the present invention; Figure 2 It is a process flow schematic diagram of the ultrafine grinding and sorting system of the present invention.

[0016] In the figure, 101, raw material warehouse; 102, rotor scale feeder; 103, chute 1; 104, primary classification buffer bin; 105, primary vertical single-rotor classifier; 106, primary powder selection coarse powder bin; 107, bag filter 1; 108, secondary vertical single-rotor classifier; 109, ultra-fine classification coarse powder bin; 110, chute 2; 111, cyclone collector; 112, bag filter 2; 113, ultra-fine powder bin; 114, sub-fine powder bin; 115, ton bag packaging machine 1; 201, slag feeder; 202, pre-grinding ball mill dust collector; 203, slag pre-grinding ball mill; 204, ultrafine powder ball mill; 205, mill tail dust collector; 206, special powder separator for ultrafine powder; 207, bag collector 1; 208, building material bin; 209, ultra-fine classification buffer bin; 210, vertical multi-rotor ultra-fine classifier; 211, bag collector 2; 212, product bin; 213, ton bag packaging machine 2. Detailed Embodiments

[0017] In order to make the technical means, technical features, invention purpose and technical effects achieved by the present invention easy to understand, the present invention will be further described below with reference to specific drawings.

[0018] Example 1 As Figure 1 And Figure 2As shown in the figure, a superfine powder production system includes a superfine powder microbead sorting system and a superfine grinding and sorting system. The superfine powder microbead sorting system and the superfine grinding and sorting system are interconnected. After the raw materials are sorted by the superfine powder microbead sorting system, some of the sorted powder materials are transported to the superfine grinding and sorting system to participate in the superfine grinding and sorting.

[0019] As Figure 1 shown in the figure, the superfine powder microbead sorting system includes a raw material feeding device, a primary classification device, a secondary classification device, and a microbead powder packaging device. The raw material feeding device, the primary classification device, the secondary classification device, and the microbead powder packaging device are connected in series in sequence. In this embodiment, the connection between the raw material feeding device, the primary classification device, the secondary classification device, and the microbead powder packaging device is achieved through an air slide and / or a bucket elevator. The air slide and the bucket elevator adopt existing technologies, and the structure thereof will not be described in detail in this embodiment; The raw material feeding device includes a raw material storage bin 101 and a primary classification buffer bin 104. The raw material storage bin 101 and the primary classification buffer bin 104 are connected in series. The capacity of the raw material storage bin 101 in this embodiment is set to 1500 m³. An inflation box (not shown in the figure) is installed in the raw material storage bin 101, and the raw materials in the raw material storage bin 101 can be activated at any time through the inflation box. A rotor scale feeder 102 is installed at the bottom of the raw material storage bin 101 for weighing and metering the raw materials. The raw materials in the raw material storage bin 101 are connected to the primary classification buffer bin 104 through a chute 103. After being metered by the rotor scale feeder 102, the raw materials in the raw material storage bin 101 are transported to the primary classification buffer bin 104 through the chute 103; The primary classification device includes a primary vertical single-rotor classifier 105 and a first-stage selected coarse powder bin 106. The primary vertical single-rotor classifier 105 and the first-stage selected coarse powder bin 106 are connected in series. The materials in the primary classification buffer bin 104 are sent into the primary vertical single-rotor classifier 105 for primary classification. The powder materials with a particle size greater than 180 mesh separated by the primary vertical single-rotor classifier 105 are transported into the first-stage selected coarse material bin; The secondary classification device includes a bag filter 107, a secondary vertical single-rotor classifier 108, and an ultra-fine classification coarse powder bin 109. The bag filter 107, the secondary vertical single-rotor classifier 108, and the ultra-fine classification coarse powder bin 109 are connected in series in sequence. The powder materials with a particle size less than 180 mesh separated by the primary vertical single-rotor classifier 105 are collected by the bag filter 107 and then transported to the secondary vertical single-rotor classifier 108 for secondary classification. The powder materials with a particle size between 250 - 300 mesh classified by the secondary classification are transported into the ultra-fine classification coarse powder bin 109, and the other powder materials classified by the secondary classification enter the microbead powder packaging device; The microbead powder dispensing device includes a cyclone collector 111, a bag filter II 112, and an ultrafine powder bin 113. The cyclone collector 111, the bag filter II 112, and the ultrafine powder bin 113 are connected in series in sequence. A sub-fine powder bin 114 is also connected to the cyclone collector 111. The sub-fine powder bin 114 and the ultrafine powder bin 113 are distributed in parallel and are both connected to a ton bag packing machine I 115. The powder enters the cyclone collector 111 for re-classification. The powder with a particle size mesh number greater than 4000 is collected by the bag filter II 112 and then sent to the ultrafine powder bin 113. The powder with a particle size mesh number of 800 - 1400 is sent into the sub-fine powder bin 114. The powder in the ultrafine powder bin 113 and the sub-fine powder bin 114 is packed into small bag finished products or ton bag finished products through the ton bag packing machine I 115; The outlet ends of the primary powder selection coarse powder bin 106 and the ultrafine classification coarse powder bin 109 are connected with a chute II 110. The chute I 103 and the chute II 110 are connected through a pipeline. The coarse powder in the raw material warehouse 101 is transported to the chute II 110 through the chute I 103. The powder with a particle size mesh number greater than 180 in the primary powder selection coarse powder bin 106 and the powder with a particle size mesh number of 250 - 300 in the ultrafine classification coarse powder bin 109 can both be transported through the chute II 110 to participate in the ultrafine grinding and separation system for ultrafine grinding and separation.

[0020] As Figure 2 shown, the ultrafine grinding and separation system includes an ultrafine grinding batching device and an ultrafine grinding classification device, and the ultrafine grinding batching device and the ultrafine grinding classification device are connected in series; The ultrafine grinding batching device includes a slag feeder 201, a pre-grinding ball mill dust collector 202, a slag pre-grinding ball mill 203, and an ultrafine powder ball mill 204. The pre-grinding ball mill dust collector 202 and the slag pre-grinding ball mill 203 are connected in parallel and then in series between the slag feeder 201 and the ultrafine powder ball mill 204. The chute II 110 is connected in series with the ultrafine powder ball mill 204. A mill tail dust collector 205 is connected to the outlet end of the ultrafine powder ball mill 204. The raw materials fed into the ultrafine powder ball mill 204 come from the following aspects: One, the bulk raw materials are sent into the feeder by a loader, weighed and measured by the belt scale of the feeder, and then sent into the slag pre-grinding ball mill 203 through the slag feeder 201 for pre-grinding. The pre-ground powder enters the ultrafine powder ball mill 204; Two, the raw materials are sent into the feeder by a loader, weighed and measured by the belt scale of the feeder. The powder that does not need to be pre-ground after measurement is sent to the pre-grinding ball mill dust collector 202 through the slag feeder 201 and can be directly sent to the ultrafine powder ball mill 204; Three, the coarse powder in the raw material warehouse 101 is transported to the chute II 110 through the chute I 103 and is transported to the ultrafine powder ball mill 204 by the chute II 110; The powder is subjected to ultrafine grinding in the ultrafine powder ball mill 204; The ultrafine grinding and classification device includes a special powder separator 206 for ultrafine powder and a first bag collector 207. The special powder separator 206 for ultrafine powder and the first bag collector 207 are connected in series. The tail mill dust collector 205 is connected in series at the inlet end of the special powder separator 206 for ultrafine powder. The material ground by the ultrafine powder ball mill 204 is collected by the tail mill dust collector 205 and then enters the special powder separator 206 for ultrafine powder for sorting. Among them, the powder with a particle size less than 800 mesh returns to the ultrafine powder ball mill 204 for re-grinding, and the powder with a particle size greater than 800 mesh is collected by the first bag collector 207 and then transported. According to production requirements, the powder collected by the first bag collector 207 is divided into two paths during transportation: one path is transported to the building materials bin 208 and transported by a tanker, and the other path is transported to the ultrafine classification buffer bin 209 for buffering. An upright multi-rotor ultrafine classifier 210, a second bag collector 211 and a product bin 212 are connected in series on the ultrafine classification buffer bin 209 in sequence. The upright multi-rotor ultrafine classifier 210 is connected to the ultrafine classification coarse powder bin 109 through a pipeline. The powder in the ultrafine classification buffer bin 209 is sent to the upright multi-rotor ultrafine classifier 210 for classification. The powder with a particle size less than 600 mesh is transported into the ultrafine classification coarse powder bin 109, and the powder with a particle size greater than 1200 mesh is collected by the second bag collector 211 and then enters the product bin 212. The number of product bins 212 is two groups, and the two groups of product bins 212 are distributed in parallel and are both connected to the second ton bag packaging machine 213. The powder in the product bin 212 can be packaged into small bag finished products or ton bag finished products by the second ton bag packaging machine 213.

[0021] Example 2 An ultrafine powder production process flow includes the following steps: S1. Ultrafine powder microsphere sorting S1.1. The powder in the raw material warehouse 101 is transported to the first-stage classification buffer bin 104 through the first chute 103. A rotor scale feeder 102 is provided at the outlet end of the raw material warehouse 101. After being metered by the rotor scale feeder 102, it is transported to the first-stage classification buffer bin 104. S1.2. The powder in the first-stage classification buffer bin 104 is sent to the first-stage upright single-rotor classifier 105 for first-stage classification; S1.2.1. The powder with a particle size greater than 180 mesh is transported to the first-stage separated coarse powder bin 106 for temporary storage; S1.2.2. The powder with a particle size less than 180 mesh is collected by the first bag filter 107 and then sent to the second-stage upright single-rotor classifier 108 for second-stage classification. The second-stage classification in this example is divided into three levels; S1.2.2.1. The powder with a particle size of 250 - 300 mesh is transported to the ultrafine classification coarse powder bin 109 for temporary storage; S1.2.2.2, the powder with a particle size greater than 4000 mesh enters the cyclone collector 111, is classified by the cyclone collector 111, and is collected by the bag dust collector 112, and is transported to the ultrafine powder bin 113, and the ultrafine powder bin 113 is connected to the ton bag packaging machine 115; S1.2.2.3, the micro-bead powder with a particle size of 800-1400 mesh is transported to the sub-fine powder bin 114, and the sub-fine powder bin 114 is connected to the ton bag packaging machine 115; S1.2.2.4, the powder materials in the ultrafine powder bin 113 and the sub-fine powder bin 114 are packaged into small bags or ton bags of finished products by a ton bag packaging machine 115; S1.2.3, the powder in the primary powder selection coarse powder bin 106 and the ultrafine classification coarse powder bin 109 can be transported to the ultrafine powder ball mill 204 through the chute 103, and participate in ultrafine grinding and sorting in the ultrafine powder ball mill 204; S2, ultra-fine grinding and sorting S2.1. Ultrafine grinding ingredients. The powder materials involved in ultrafine grinding come from multiple sources: S2.1.1, the bulk raw materials enter the slag pre-grinding ball mill 203 through the slag feeder 201 for pre-grinding, and then are transported to the ultra-fine powder ball mill 204. The bulk raw materials are transported by a loader and measured by a belt scale; S2.1.2, the powder that does not need to be pre-grinded is transported to the pre-grinding ball mill dust collector 202 through the slag feeder 201 and then directly sent to the ultra-fine powder ball mill 204; S2.1.3, the coarse powder in the raw material warehouse 101 is transferred to the chute 1 10 through the chute 1 and then enters the ultrafine powder ball mill 204, and the powder in the primary powder selection coarse powder bin 106 and the ultrafine classification coarse powder bin 109 enters the ultrafine powder ball mill 204 through the chute 2 110; S2.2, Ultrafine powder ultrafine grinding and classification S2.2.1. The powders transported by various channels are ground in the ultrafine powder ball mill 204. The materials ground in the ultrafine powder ball mill 204 are collected by the mill tail dust collector 205 and then enter the ultrafine powder special powder classifier 206; S2.2.1.1. The powder with a particle size less than 800 mesh is returned to the ultrafine powder ball mill 204 for re-grinding to improve resource utilization; S2.2.1.2. Powder with a particle size greater than 800 mesh is collected by the bag collector 207. According to production requirements, the powder collected by the bag collector 207 is transported in two ways; S2.2.1.2.1. The powder collected by the bag collector is transported all the way to the building material silo 208 and transported by tank truck; S2.2.1.2.2. Another route of the powder collected by the bag - type collector is conveyed to the ultra - fine classification buffer bin 209 and then sent to the vertical multi - rotor ultra - fine classifier 210 for classification; S2.2.1.2.2.1. The powder with a particle size less than 600 mesh is returned to the ultra - fine classification coarse powder bin 109 for storage; S2.2.1.2.2.2. For the powder with a particle size greater than 1200 mesh, different high - mesh ultra - fine powders are obtained by setting the parameters of the classifier. After being collected by the second bag - type collector 211, they enter the product bin 212 and are packaged into small - bag finished products or ton - bag finished products by the second ton - bag packaging machine 213.

[0022] During the process operation, a high - precision laser particle size analyzer is equipped, and full - process follow - up detection is adopted to ensure product quality.

[0023] The above is only a preferred embodiment of the present invention and is not used to limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made to the content within the scope of the patent application of the present invention shall fall within the technical scope of the present invention.

Claims

1. An ultrafine powder production system, characterized in that: It includes an ultrafine powder and microbead sorting system and an ultrafine grinding sorting system, which are connected with each other through a pipeline. The ultrafine powder and microbead sorting system includes a raw material feeding device, a primary grading device, a secondary grading device and a microbead powder filling device, which are sequentially arranged in series. The ultrafine grinding sorting system includes an ultrafine grinding batching device and an ultrafine grinding grading device, which are sequentially arranged in series.

2. The ultrafine powder production system according to claim 1, characterized in that: The raw material feeding device comprises a raw material warehouse (101) and a primary grading buffer bin (104) arranged in series, a chute 1 (103) is arranged between the raw material warehouse (101) and the primary grading buffer bin (104), and a rotor scale feeder (102) is arranged at the bottom of the raw material warehouse (101).

3. The ultrafine powder production system according to claim 1, characterized in that: The primary classification device comprises a primary vertical single-rotor classifier (105) and a primary powder selection coarse powder bin (106), and the primary vertical single-rotor classifier (105) and the primary powder selection coarse powder bin (106) are arranged in series.

4. The ultrafine powder production system according to claim 1, characterized in that: The secondary classification device comprises a bag dust collector (107), a secondary vertical single-rotor classifier (108) and a superfine classified coarse powder bin (109), wherein the bag dust collector (107), the secondary vertical single-rotor classifier (108) and the superfine classified coarse powder bin (109) are sequentially arranged in series.

5. The ultrafine powder production system according to claim 3, characterized in that: The outlet ends of the primary powder selection coarse powder bin (106) and the superfine classification coarse powder bin (109) are connected to a second chute (110), and the second chute (110) is connected to the first chute (103) through a pipeline.

6. The ultrafine powder production system according to claim 1, characterized in that: The microbead powder packaging device comprises a cyclone collector (111), a second bag dust collector (112) and an ultrafine powder bin (113); the cyclone collector (111), the second bag dust collector (112) and the ultrafine powder bin (113) are sequentially arranged in series; a sub-fine powder bin (114) is also arranged on the cyclone collector (111); the ultrafine powder bin (113) and the sub-fine powder bin (114) are both connected to a first ton bag packaging machine (115).

7. The ultrafine powder production system according to claim 5, characterized in that: The ultrafine grinding batching device comprises a slag feeder (201), a pre-grinding ball mill dust collector (202), a slag pre-grinding ball mill (203) and an ultrafine powder ball mill (204); the pre-grinding ball mill dust collector (202) and the slag pre-grinding ball mill (203) are arranged in parallel, and are respectively arranged in series with the slag feeder (201) and the ultrafine powder ball mill (204); a second chute (110) is arranged in series on the ultrafine powder ball mill (204); and a mill tail dust collector (205) is arranged at the outlet end of the ultrafine powder ball mill (204).

8. The ultrafine powder production system according to claim 7, characterized in that: The ultrafine grinding and grading device comprises an ultrafine powder special classifier (206) and a bag collector (207) arranged in series, the grinding tail dust collector (205) being arranged in series at the inlet end of the ultrafine powder special classifier (206), the powder material at the outlet end of the bag collector (207) being divided into two paths, one path being transported to a building material bin (208), and the other path being transported to an ultrafine grading buffer bin (209), the ultrafine grading buffer bin (209) being arranged in series in sequence with a vertical multi-rotor ultrafine classifier (210), a bag collector (211) and a product bin (212), the product bin (212) being arranged in two groups, and the two groups of product bins (212) being connected in parallel with a second ton bag packaging machine (213).

9. The ultrafine powder production system according to claim 8, characterized in that: The vertical multi-rotor superfine classifier (210) is connected to the superfine classifying coarse powder bin (109) via a pipeline.

10. A process flow for producing ultrafine powder, characterized in that: The steps include: S1. Ultrafine powder and microbead separation S1.1, the powder in the raw material warehouse (101) is transported to the first-level grading buffer bin (104) through the chute 1 (103); S1.2, the powder in the primary classification buffer bin (104) is sent to the primary vertical single-rotor classifier (105) for primary classification; S1.2.1, the powder with a particle size greater than 180 mesh is transported to the primary powder selection coarse powder bin (106) for temporary storage; S1.2.2, powder with a particle size less than 180 mesh is collected by bag dust collector 1 (107) and sent to the secondary vertical single rotor classifier (108) for secondary classification; S1.2.2.

1. The powder with a particle size of 250-300 mesh is transported to the superfine classification coarse powder bin (109) for temporary storage; S1.2.2.2, powder with a particle size greater than 4000 mesh enters the cyclone collector (111), is classified by the cyclone collector (111), and is collected by the bag dust collector 2 (112), and is transported to the ultrafine powder bin (113); S1.2.2.3, the micro-bead powder with a particle size of 800-1400 mesh is transported to the sub-fine powder bin (114); S1.2.2.4, the powder materials in the ultrafine powder bin (113) and the sub-fine powder bin (114) are packaged into small bags or ton bags of finished products by the ton bag packaging machine 1 (115); S1.2.3, the powder in the primary powder selection coarse powder bin (106) and the ultrafine classification coarse powder bin (109) is transported to the ultrafine powder ball mill (204) through the chute 1 (103); S2, ultra-fine grinding and sorting S2.1, Ultrafine Grinding Ingredients S2.1.1, after being weighed, the bulk raw materials enter the slag pre-grinding ball mill (203) through the slag feeder (201) for pre-grinding, and are then transported to the ultrafine powder ball mill (204); S2.1.2, the powder that does not need to be pre-grinded is transported to the pre-grinding ball mill dust collector (202) through the slag feeder (201) and then sent to the ultra-fine powder ball mill (204); S2.1.3, the coarse powder in the raw material warehouse (101) is transferred to the chute 2 (110) through the chute 1 (103) and then enters the ultrafine powder ball mill (204), and the powder in the primary powder selection coarse powder bin (106) and the ultrafine classification coarse powder bin (109) are both transferred to the ultrafine powder ball mill (204) through the chute 2 (110); S2.2, Ultrafine powder ultrafine grinding and classification S2.2.

1. The materials ground by the ultrafine powder ball mill (204) are collected by the mill tail dust collector (205) and then enter the ultrafine powder special classifier; S2.2.1.

1. Powder with a particle size less than 800 mesh is returned to the ultrafine powder ball mill (204); S2.2.1.

2. Powder with a particle size greater than 800 mesh is collected by bag collector 1 (207) and transported in two ways; S2.2.1.2.1, the powder collected by the bag collector is transported all the way to the building material silo (208); S2.2.1.2.

2. The powder collected by the bag collector is transported to the superfine grading buffer bin (209) and then sent to the vertical multi-rotor superfine grading machine (210) for grading; S2.2.1.2.2.

1. Powder with a particle size of less than 600 mesh is returned to the superfine classification coarse powder bin (109); S2.2.1.2.2.

2. For powders with a particle size greater than 1200 mesh, ultrafine powders of different mesh sizes are obtained by setting the parameters of the classifier. The powders are collected by the second bag collector (211) and enter the product bin (212). They are then packaged into small bags or ton bags by the second ton bag packaging machine (213).

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