Superfine powder grinding and sorting system

Abstract

The utility model relates to the technical field of powder processing, and particularly discloses an ultrafine powder grinding and sorting system which comprises an ultrafine grinding batching device and an ultrafine grinding and grading device which are connected in series, and the ultrafine grinding batching device comprises a pre-grinding ball mill dust remover, a slag pre-grinding ball mill and an ultrafine powder ball mill. The superfine grinding and grading device comprises a powder concentrator, a bag type collector I, a powder bin for building materials and a grading mechanism; according to the utility model, raw materials in different forms are fed into the ultrafine powder ball mill to be circularly ground, the ground powder enters the powder concentrator to be sorted, ultrafine ground powder products with different mesh numbers can be selected in a controlled manner, the ground and sorted powder is small in particle size and wide in distribution range, and the large-particle-size powder product is used as a building material; and the small-particle-size powder is fed into a vertical multi-rotor superfine classifier for classification, and is used as a reinforcing material to replace carbon black and the like in rubber industry and plastic products, so that the application industry of the fly ash is widened, and the reutilization of the fly ash is improved.

Description

Technical Field

[0001] This utility model relates to the field of powder processing technology, and in particular to an ultrafine powder grinding and sorting system. Background Technology

[0002] Fly ash is a multifunctional powdery mineral resource with significant market value. With the development of science and technology and the needs of modern industrial construction, the applications of fly ash are becoming increasingly widespread. Research and practice have shown that the effectiveness of fly ash is closely related to its fineness; the finer the fineness, the better the effect. Therefore, grinding and sorting are necessary during fly ash processing. However, existing technologies for grinding fly ash suffer from inconsistent particle sizes, including a large amount of ultrafine fly ash that meets standards. Direct grinding increases the workload, while the corresponding sorting systems have poor sorting efficiency and poor separation effect, resulting in the mixing of different particle sizes and material waste.

[0003] Therefore, it is necessary to propose an improvement to the ultrafine powder grinding and sorting system to overcome the shortcomings of the existing technology. Utility Model Content

[0004] The purpose of this invention is to solve the problems in the prior art and provide an ultrafine powder grinding and sorting system.

[0005] The technical solution of this utility model is:

[0006] An ultrafine powder grinding and sorting system includes an ultrafine grinding batching device and an ultrafine grinding and grading device, which are connected in series. The ultrafine grinding batching device includes a pre-grinding ball mill dust collector, a slag pre-grinding ball mill, and an ultrafine powder ball mill. The pre-grinding ball mill dust collector is connected in parallel with the slag pre-grinding ball mill and then connected in series with the ultrafine powder ball mill. The ultrafine grinding and grading device includes a classifier, a bag collector, a building material powder silo, and a grading mechanism. The classifier and the bag collector are connected in series. The building material powder silo and the grading mechanism are connected in parallel and then connected in series with the bag collector.

[0007] Preferably, the ultrafine grinding batching device also includes a feeding weighing machine and a slag feeder, which are connected in series. The dust collector of the pre-grinding ball mill and the slag pre-grinding ball mill are both connected to the slag feeder.

[0008] Preferably, the inlet end of the ultrafine powder ball mill is equipped with a bucket elevator, and the dust collector of the pre-grinding ball mill and the slag pre-grinding ball mill are both connected to the bucket elevator. The inlet of the bucket elevator is also connected to a single dust collector, which is connected to an inclined chute. The outlet end of the ultrafine powder ball mill is equipped with a bag dust collector, which is connected to the classifier through a second bucket elevator and an inclined chute.

[0009] Preferably, the classifier is connected to the bucket elevator via a chute.

[0010] Preferably, the grading mechanism includes an ultrafine grading buffer bin, a vertical multi-rotor ultrafine grading machine, a bag collector, and a product bin arranged in series. A delivery tank is provided between the ultrafine grading buffer bin and the vertical multi-rotor ultrafine grading machine. There are two product bins, which are connected in parallel and then connected to the ton bag packaging machine through the powder buffer bin.

[0011] Preferably, the bag collector is connected to the inclined chute four and the bucket elevator three. The bucket elevator three is connected to the building material powder silo through the inclined chute five, the bucket elevator four and the inclined chute six. The bucket elevator three is connected to the ultrafine classification buffer silo through the inclined chute seven.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention utilizes an ultrafine grinding and feeding device to weigh and meter raw materials of different forms before feeding them into an ultrafine powder ball mill for cyclic grinding. The ground powder then enters a classifier for sorting, allowing for the controllable selection of ultrafine grinding products with different mesh sizes. The powder produced after grinding and sorting has a small particle size and a wide distribution range. Large-particle-size powder products are used as building materials, while small-particle-size powder is fed into a vertical multi-rotor ultrafine classifier for grading, serving as a reinforcing material to replace carbon black in the rubber industry and plastic products. This expands the application industries of fly ash, improves the reuse of fly ash, reduces energy consumption, and reduces environmental pollution caused by mining. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Among them, 201, slag feeder; 202, dust collector for pre-grinding ball mill; 203, slag pre-grinding ball mill; 204, bucket elevator I; 205, ultrafine powder ball mill; 206, bag dust collector; 207, bucket elevator II; 208, inclined chute I; 209, air classifier; 210, inclined chute II; 211, bag collector I; 212, inclined chute III; 213, bucket elevator III; 214, inclined chute IV; 215. Bucket Elevator IV; 216. Inclined Chute V; 217. Building Material Powder Silo; 218. Inclined Chute VI; 219. Ultrafine Classification Buffer Silo; 220. Sending Tank; 221. Vertical Multi-Rotor Ultrafine Classifier; 222. Bag Collector II; 223. Product Silo; 224. Powder Buffer Silo; 225. Ton Bag Packaging Machine; 226. Inclined Chute VII; 227. Single-Unit Dust Collector; 228. Feeding and Weighing Machine. Detailed Implementation

[0016] To make the technical means, technical features, utility model purpose and technical effects of this utility model easier to understand, the present utility model will be further described below with reference to specific illustrations.

[0017] like Figure 1 As shown, an ultrafine powder grinding and sorting system includes an ultrafine grinding batching device and an ultrafine grinding and grading device, which are connected in series. The ultrafine grinding batching device is used to prepare and grind the raw materials, and the ultrafine grinding and grading device is used to sort the ground powder.

[0018] like Figure 1 As shown, the ultrafine grinding batching device includes a feeding weighing machine 228, 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 205. The feeding weighing machine 228 and the slag feeder 201 are connected in series. The pre-grinding ball mill dust collector 202 and the slag pre-grinding ball mill 203 are connected in parallel and then connected in series with the slag feeder 201. The slag feeder 201 feeds the pre-grinding ball mill dust collector 202 and the slag pre-grinding ball mill 203 into the ultrafine powder ball mill. The ultrafine powder ball mill 205 is fed by the pre-grinding ball mill dust collector 202 connected in parallel with the slag pre-grinding ball mill 203 in series. A bucket elevator 204 is connected to the inlet end of the ultrafine powder ball mill 205. The pre-grinding ball mill dust collector 202 and the slag pre-grinding ball mill 203 are both connected to the ultrafine powder ball mill 205 through the bucket elevator 204. A single dust collector 227 is also connected to the inlet of the bucket elevator 204. The single dust collector 227 is connected to the inclined chute 208.

[0019] The materials that enter the ultrafine powder ball mill 205 for grinding come from the following aspects:

[0020] 1. The metered lumpy material is fed into the slag pre-grinding ball mill 203 for coarse grinding via the slag feeder 201, and then lifted into the ultrafine powder ball mill 205 by the bucket elevator 204.

[0021] 2. After metering, the powder that does not require pre-grinding is sent to the dust collector 202 of the pre-grinding ball mill via the slag feeder 201 and then directly to the ultrafine powder ball mill 205.

[0022] Third, after the coarse powder from the previous process is conveyed through the inclined chute 208, it is lifted by the bucket elevator 204 into the ultrafine powder air mill. The inclined chute 208 establishes negative pressure through the single dust collector 227.

[0023] like Figure 1 As shown, a bag filter 206 is connected to the outlet end of the ultrafine powder ball mill 205, and the material ground by the ultrafine powder ball mill 205 is collected by the bag filter 206.

[0024] like Figure 1As shown, the ultrafine grinding and grading device includes a classifier 209, a bag collector 211, a building material powder silo 217, and a grading mechanism. The bag collector 206 is connected to the classifier 209 via a bucket elevator 207 and a chute 210. The classifier 209 and the bag collector 211 are connected in series. The building material powder silo 217 and the grading mechanism are connected in parallel and then connected in series with the bag collector 211. The classifier 209 is connected to the bucket elevator 204 via a chute 212. The grading mechanism includes an ultrafine grading buffer silo 219, a vertical multi-rotor ultrafine classifier 221, and a bag collector 217 connected in series. 22 and product bin 223, a feeding tank 220 is connected between the ultrafine grading buffer bin 219 and the vertical multi-rotor ultrafine grading machine 221. There are two product bins 223, which are connected in parallel. Both product bins 223 are connected to the ton bag packaging machine 225 through the powder buffer bin 224. The bag collector 1 211 is connected to the inclined chute 4 214 and the bucket elevator 3 213. The bucket elevator 3 213 is connected to the building material powder bin 217 through the inclined chute 5 216, the bucket elevator 4 215 and the inclined chute 6 218. The bucket elevator 3 213 is connected to the ultrafine grading buffer bin 219 through the inclined chute 7 226.

[0025] The ground powder collected by bag dust collector 206 is lifted by bucket elevator 207 and enters classifier 209 through inclined chute 210. Classifier 209 classifies the powder. Powder with a particle size of less than 800 mesh is returned through inclined chute 312 and then lifted by bucket elevator 1 204 to ultrafine powder ball mill 205 for further grinding. In inclined chute 312 establishes negative pressure through single dust collector 227.

[0026] In addition, powder with a particle size greater than 800 mesh is collected by bag collector 211, conveyed by chute 214, lifted by bucket elevator 213, and then transported in two separate routes according to production needs:

[0027] One path is conveyed via inclined chute 5 216, lifted by bucket elevator 4 215, and conveyed via inclined chute 6 218 to the building material powder silo 217. The powder in the building material powder silo 217 can be transported by tanker truck. Both inclined chute 5 216 and inclined chute 6 218 establish negative pressure through the dust collectors on the top of the silo.

[0028] Another path is conveyed via inclined chute 226 into the ultrafine grading buffer bin 219. The powder is then conveyed via sending tank 220 to the vertical multi-rotor ultrafine classifier 221 for grading. Powder with a particle size of less than 600 mesh is conveyed to other processes for further processing. Powder with a particle size of more than 1200 mesh is obtained by setting the parameters of the classifier to obtain ultrafine powder with different high mesh sizes. After being collected by bag collector 222, it enters the product bin 223 and is packaged into small bag finished products or ton bag finished products by ton bag packaging machine 225.

[0029] The working principle of this utility model is as follows:

[0030] I. Ingredients

[0031] After metering, the lumpy raw materials that need to be pre-ground are fed into the slag pre-grinding ball mill 203 for coarse grinding via the slag feeder 201 and then fed into the ultrafine powder ball mill 205; the powder that does not need to be pre-ground after metering is fed into the pre-grinding ball mill dust collector 202 via the slag feeder 201 and then fed into the ultrafine ball mill; the coarse powder conveyed from other processes is fed into the ultrafine powder ball mill 205, where the raw materials are ground.

[0032] II. Classification

[0033] The ground powder enters the classifier 209, and the material with a particle size of less than 800 mesh is returned to the ultrafine ball mill for further grinding.

[0034] Powder with a particle size greater than 800 mesh is divided into two conveying paths according to production needs. One path is conveyed to the building material powder silo 217, and the other path is conveyed to the vertical multi-rotor ultrafine classifier 221 for classification. Powder with a particle size less than 600 mesh is sent to other processes for reuse, and powder with a particle size greater than 1200 mesh is conveyed to the product silo 223 and packaged into small bags or ton bags by the ton bag packaging machine 225.

[0035] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. All equivalent changes and modifications made in accordance with the scope of the claims of this utility model should fall within the technical scope of this utility model.

Claims

1. An ultrafine powder grinding and sorting system, characterized in that: The device includes an ultrafine grinding batching device and an ultrafine grinding and grading device, which are connected in series. The ultrafine grinding batching device includes a pre-grinding ball mill dust collector (202), a slag pre-grinding ball mill (203), and an ultrafine powder ball mill (205). The pre-grinding ball mill dust collector (202) is connected in parallel with the slag pre-grinding ball mill (203) and then connected in series with the ultrafine powder ball mill (205). The ultrafine grinding and grading device includes a classifier (209), a bag collector (211), a building material powder silo (217), and a grading mechanism. The classifier (209) and the bag collector (211) are connected in series. The building material powder silo (217) and the grading mechanism are connected in parallel and then connected in series with the bag collector (211).

2. The ultrafine powder grinding and sorting system according to claim 1, characterized in that: The ultrafine grinding batching device also includes a feeding weighing machine (228) and a slag feeder (201). The feeding weighing machine (228) and the slag feeder (201) are connected in series. The dust collector (202) of the pre-grinding ball mill and the slag pre-grinding ball mill (203) are both connected to the slag feeder (201).

3. The ultrafine powder grinding and sorting system according to claim 1, characterized in that: The inlet end of the ultrafine powder ball mill (205) is equipped with a bucket elevator (204). The dust collector (202) of the pre-grinding ball mill and the slag pre-grinding ball mill (203) are both connected to the bucket elevator (204). The inlet of the bucket elevator (204) is also connected to a single-unit dust collector (227). The single-unit dust collector (227) is connected to a chute (208). The outlet end of the ultrafine powder ball mill (205) is equipped with a bag dust collector (206). The bag dust collector (206) is connected to the classifier (209) through a second bucket elevator (207) and a second chute (210).

4. The ultrafine powder grinding and sorting system according to claim 3, characterized in that: The classifier (209) is connected to the bucket elevator (204) via the inclined chute three (212).

5. The ultrafine powder grinding and sorting system according to claim 1, characterized in that: The grading mechanism includes an ultra-fine grading buffer bin (219), a vertical multi-rotor ultra-fine grading machine (221), a bag collector (222), and a product bin (223) arranged in series. A delivery tank (220) is provided between the ultra-fine grading buffer bin (219) and the vertical multi-rotor ultra-fine grading machine (221). There are two product bins (223), which are connected in parallel and then connected to the ton bag packaging machine (225) through the powder buffer bin (224).

6. The ultrafine powder grinding and sorting system according to claim 5, characterized in that: The bag collector 1 (211) is connected to the inclined chute 4 (214) and the bucket elevator 3 (213). The bucket elevator 3 (213) is connected to the building material powder silo (217) through the inclined chute 5 (216), the bucket elevator 4 (215) and the inclined chute 6 (218). The bucket elevator 3 (213) is connected to the ultrafine graded buffer silo (219) through the inclined chute 7 (226).

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