Ceramic powder recovery system and ceramic powder production line

Abstract

The utility model discloses a ceramic powder recovery system and a ceramic powder production line, the ceramic powder recovery system comprises a spray drying tower, a bag-type dust collector and a recovery pipeline, the bag-type dust collector is connected with the spray drying tower, the bag-type dust collector is used for collecting fine powder particles in tail gas in the spray drying tower, and the recovery pipeline is connected with the spray drying tower. And the recovery pipeline is connected to the bag-type dust collector and the spray drying tower and is used for conveying the fine powder particles in the bag-type dust collector back to the spray drying tower. The fine powder particles collected in the bag-type dust collector are sent back to the spray drying tower, so that the fine powder particles and fog drops in the spray drying tower are fused together and circulate to form powder, and excessive sewage caused by fine powder cyclic utilization in a slurrying mode is avoided; the energy consumption for re-atomizing and drying into powder after slurrying is reduced to a great extent, the productivity of the spray drying tower can be improved, and the energy consumption of the spray drying tower is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of ceramic powder production, and more specifically, to a ceramic powder recovery system and a ceramic powder production line. Background Art

[0002] At present, ceramic production enterprises generally use spray drying towers to produce powders, and use bag dust collectors to filter the exhaust gas from the spray drying tower to clean the exhaust gas. In the process of the bag dust collector extracting the exhaust gas for cleaning, the ceramic powder in the exhaust gas will be filtered in the dust bag. According to statistics, the ceramic powder in the exhaust gas accounts for about 5% of the total ceramic powder production.

[0003] The ceramic powder collected by the bag filter is generally dropped into the stirring tank below the bag filter through a pneumatic vibrator, and then converted into slurry again through fine powder slurrying, and then transported to the ball mill through a plunger pump to achieve the recycling of ceramic powder in the exhaust gas.

[0004] However, the method of collecting ceramic powder with bag dust removal and then slurrying it directly into a ball mill has the disadvantage that, due to the large proportion of ceramic powder in the exhaust gas, a certain amount of water is needed to slurry it, resulting in a large amount of sewage, which cannot be completely digested by the ball mill process. In addition, the whole process consumes a lot of electricity, resulting in high energy consumption in the spray drying tower powder making.

[0005] Therefore, the prior art needs to be improved. Utility Model Content

[0006] The purpose of this application is to provide a ceramic powder recovery system and a ceramic powder production line, aiming to solve the technical problem of how to provide a ceramic powder recovery system that can reduce the energy consumption of a spray drying tower in the prior art.

[0007] To achieve the above purpose, the technical solution adopted in this application is:

[0008] In a first aspect, the present application provides a ceramic powder recovery system, comprising:

[0009] Spray drying tower;

[0010] A bag dust collector, the bag dust collector is connected to the spray drying tower, and the bag dust collector is used to collect fine powder particles in the tail gas in the spray drying tower;

[0011] A recovery pipe is connected to the bag filter and the spray drying tower, and is used to return the fine powder particles in the bag filter to the spray drying tower.

[0012] In one embodiment, it further includes:

[0013] A collecting bin is located between the bag filter and the recovery pipe, and is used to collect fine powder particles shaken off by the bag filter.

[0014] In one embodiment, it further includes:

[0015] A screw feeder is located between the collecting bin and the recovery pipe, and is used to transport the fine powder particles in the collecting bin to the recovery pipe.

[0016] In one embodiment, it further includes:

[0017] A weighing device is connected to the collecting bin and is used to measure the weight of the fine powder particles in the collecting bin.

[0018] In one embodiment, it further includes:

[0019] A first fan is connected to the recovery pipeline, and is used to provide power for the recovery pipeline to transport fine powder particles.

[0020] In one embodiment, the first blower comprises a Roots blower, one end of the Roots blower is connected to the screw feeder, and the other end of the Roots blower is connected to the recovery pipeline.

[0021] In one embodiment, the spray drying tower is connected to a powder conveyor belt, and the powder conveyor belt is used to convey the ceramic powder in the spray drying tower.

[0022] In one embodiment, the spray drying tower comprises an atomizing chamber and an atomizer, wherein the atomizer is used to spray the ceramic slurry into the atomizing chamber so that the ceramic slurry is atomized in the atomizing chamber to form droplets;

[0023] The recovery pipe is in communication with the atomization chamber, and is used to transport the fine powder particles to the atomization chamber so that the fine powder particles are fused with the mist droplets.

[0024] In one embodiment, the spray drying tower further comprises:

[0025] A heater is connected to the atomizing chamber and is used to provide hot air to the atomizing chamber so that the mist droplets are dried to form ceramic powder.

[0026] In a second aspect, the present application provides a ceramic powder production line, wherein the ceramic powder production line includes the ceramic powder recovery system as described in the above embodiment. Thus, the ceramic powder production line can have all the features and beneficial effects of the above ceramic powder recovery system, which will not be repeated here.

[0027] The beneficial effects of a ceramic powder recovery system and a ceramic powder production line provided by the present application are at least:

[0028] The present application discloses a ceramic powder recovery system and a ceramic powder production line, wherein the ceramic powder recovery system includes a spray drying tower, a bag dust collector and a recovery pipe, wherein the bag dust collector is connected to the spray drying tower, the bag dust collector is used to collect fine powder particles in the tail gas in the spray drying tower, the recovery pipe is connected to the bag dust collector and the spray drying tower, and the recovery pipe is used to send the fine powder particles in the bag dust collector back to the spray drying tower. The present application sends the fine powder particles collected in the bag dust collector back to the spray drying tower, so that the fine powder particles are fused with the droplets in the spray drying tower and circulate to form powder, thereby avoiding excessive sewage caused by the recycling of fine powder by pulping, and greatly reducing the energy consumption of re-atomizing and drying into powder after pulping, which can improve the production capacity of the spray drying tower and reduce the energy consumption of the spray drying tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 A schematic diagram of the structure of a ceramic powder recovery system provided in an embodiment of the present application;

[0031] Figure 2 A schematic structural diagram of a specific embodiment of a ceramic powder recovery system provided in an embodiment of the present application.

[0032] Among them, the reference numerals in the figure are:

[0033] 100, spray drying tower; 200, bag filter; 300, recovery pipe; 400, collection bin; 410, weighing device; 500, screw feeder; 600, first fan; 700, powder conveyor belt; 110, atomization chamber; 120, atomizer; 130, heater. DETAILED DESCRIPTION

[0034] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0035] It should be noted that when a component is referred to as being "fixed on" or "disposed on" another component, it may be directly or indirectly located on the other component. When a component is referred to as being "connected to" another component, it may be directly or indirectly connected to the other component. The directions or positions indicated by the terms "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions or positions shown in the accompanying drawings and are only for the convenience of description and cannot be understood as limitations on the present technical solution. The terms "first" and "second" are only used for the convenience of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0036] See also Figure 1 The present embodiment provides a ceramic powder recovery system, which includes: a spray drying tower 100, a bag dust collector 200 and a recovery pipe 300, the bag dust collector 200 is connected to the spray drying tower 100, the bag dust collector 200 is used to collect fine powder particles in the exhaust gas in the spray drying tower 100, the recovery pipe 300 is connected to the bag dust collector 200 and the spray drying tower 100, and the recovery pipe 300 is used to send the fine powder particles in the bag dust collector 200 back to the spray drying tower 100.

[0037] In this embodiment, the spray drying tower 100 is used to atomize and dry the ceramic slurry to form ceramic powder, and the bag dust collector 200 is used to collect fine powder particles in the exhaust gas in the spray drying tower 100, and the bag dust collector 200 can return the collected fine powder particles to the spray drying tower 100 through the recovery pipe 300, so that the fine powder particles can be merged with the droplets in the spray drying tower 100, and then can be dried to form ceramic powder.

[0038] In the prior art, the fine powder particles collected by the bag filter 200 are generally dropped to the stirring tank below the bag filter 200 through a pneumatic vibrator, and then the ceramic powder is turned into slurry by fine powder slurry, and then the slurry is transported to the ball mill by a plunger pump for use as sewage balling. The method used in the prior art of collecting fine powder by bag filter and then slurrying it directly into the ball mill, due to the large proportion of fine ceramic powder particles, a certain amount of water is required to turn it into slurry, resulting in a large amount of sewage, which cannot be completely digested by the ball mill process, and the whole process consumes a lot of electricity, and the energy consumption is high.

[0039] Compared with the prior art, the entire fine powder particle recovery process in this embodiment is improved from the original spray drying tower-bag dust collector-fine powder slurry-ball milling process-spray drying tower to spray drying tower-bag dust collector-spray drying tower. The ceramic powder recovery system eliminates the fine powder slurry and other processes. The fine powder particles collected by the bag dust collector are sent back to the spray drying tower 100, so that the fine powder particles are fused with the droplets of the spray drying tower 100 and circulated to form powder, thereby avoiding the waste of water resources in the fine powder slurry process and the problem of generating a large amount of sewage that cannot be digested. The energy consumption of re-atomizing and drying into powder after slurrying is greatly reduced, the problem of high energy consumption of the spray drying tower 100 is solved, and the production capacity of the spray drying tower 100 is improved.

[0040] Therefore, this embodiment returns the fine powder particles collected in the bag filter 200 to the spray drying tower 100, so that the fine powder particles are merged with the droplets in the spray drying tower 100 and circulated to form powder, thereby avoiding excessive wastewater caused by recycling fine powder by slurrying, and greatly reducing the energy consumption of re-atomizing and drying into powder after slurrying, which can improve the production capacity of the spray drying tower 100 and reduce the energy consumption of the spray drying tower 100.

[0041] Specifically, the spray drying tower 100 is connected to a powder conveyor belt 700, which is used to convey the ceramic powder in the spray drying tower 100. For example, the spray drying tower 100 atomizes and dries the ceramic slurry to form ceramic powder, which is then conveyed out through the powder conveyor belt 700, and the tail gas of the spray drying tower 100 is extracted through the bag filter 200.

[0042] Specifically, see Figure 2 The ceramic powder recovery system further includes: a collecting bin 400, a spiral feeder 500, a weighing device 410 and a first fan 600. The collecting bin 400 is located between the bag filter 200 and the recovery pipe 300, and the collecting bin 400 is used to collect fine powder particles from the bag filter 200. The spiral feeder 500 is located between the collecting bin 400 and the recovery pipe 300, and the spiral feeder 500 is used to transport the collecting bin 400 to the recovery pipe 300. The weighing device 410 is connected to the collecting bin 400, and the weighing device 410 is used to measure the weight of the fine powder particles in the collecting bin 400. The first fan 600 is connected to the recovery pipe 300, and the first fan 600 is used to provide power for the recovery pipe 300 to transport the fine powder particles.

[0043] In this embodiment, the spray drying tower 100 is connected to the bag dust collector 200, the bag dust collector 200 is connected to the collection bin 400, the weighing device 410 is connected to the collection bin 400, the collection bin 400 is connected to the first fan 600 via the screw feeder 500, and the first fan 600 is connected to the spray drying tower 100 via the recovery pipe 300. The bag dust collector 200 is used to collect fine powder particles in the tail gas of the spray drying tower 100, and the fine powder particles are collected by the bag dust collector 200 and collected in the collection bin 400. The collection bin 400 is equipped with a weighing device 410, which is used to measure the weight of the fine powder particles in the collection bin 400, so as to control the return speed of the fine powder particles in the recovery pipe 300, so that the recovered fine powder particles can be fully integrated with the droplets. Among them, the collecting bin 400 is connected to the screw feeder 500 at the bottom, that is, the fine powder particles in the collecting bin 400 are transported to the first fan 600 through the screw feeder 500, the screw feeder 500 is connected to the input end of the first fan 600, and the output end of the first fan 600 is connected to the recovery pipe 300. The recovery pipe 300 transports the fine powder particles to the spray drying tower 100 through the first fan 600. For example, when the spray drying tower 100 atomizes the ceramic slurry into droplets, the recovery pipe 300 sends the dry fine powder particles into the spray drying tower 100 and merges them with the droplets, and then forms ceramic powder through hot air drying, which can effectively increase the production capacity of the spray drying tower 100 and reduce the energy consumption of the spray drying tower 100.

[0044] Optionally, the first blower 600 may include a Roots blower, one end of the Roots blower is connected to the screw feeder 500 , and the other end of the Roots blower is connected to the recovery pipeline 300 .

[0045] For example, the bag filter 200 is connected to the collection bin 400, the collection bin 400 is connected to the Roots blower through the screw feeder 500, the outlet of the Roots blower is connected to the recovery pipe 300, the recovery pipe 300 transports the fine powder particles of the screw feeder 500 back to the spray drying tower 100 through the Roots blower, when the spray drying tower 100 atomizes the ceramic slurry to form droplets, the Roots blower blows the fine powder particles into the spray drying tower 100 and merges with the droplets, wherein the Roots blower has the advantages of forced air delivery, stable flow, small friction loss, significant energy saving effect, compact structure, small size, light weight, strong adaptability, insensitivity to dust in the suction gas, simple maintenance and long life. It should be understood that the first blower 600 is not limited to the above-mentioned Roots blower, and the first blower 600 can also be other situations, which are not limited here.

[0046] Specifically, see Figure 2The spray drying tower 100 includes an atomizing chamber 110, an atomizer 120 and a heater 130. The atomizer 120 is used to spray the ceramic slurry into the atomizing chamber 110 so that the ceramic slurry is atomized in the atomizing chamber 110 to form droplets. The recovery pipe 300 is connected to the atomizing chamber 110. The recovery pipe 300 is used to transport fine powder particles to the atomizing chamber 110 so that the fine powder particles and the droplets are fused together. The heater 130 is connected to the atomizing chamber 110. The heater 130 is used to provide hot air to the atomizing chamber 110 so that the droplets are dried to form ceramic powder.

[0047] In this embodiment, the spray drying tower 100 includes an atomizing chamber 110, an atomizer 120 and a heater 130. The atomizer 120 is arranged in the atomizing chamber 110. The atomizer 120 atomizes the ceramic slurry to form droplets and sprays them into the atomizing chamber 110. The recovery pipe 300 blows the recovered fine powder particles into the atomizing chamber 110 through the first fan 600, so that the droplets are wrapped in the fine powder particles, and the fine powder particles and the droplets are fused together. Then, the hot air sent by the heater 130 is dried to form ceramic powder, thereby avoiding the need for fine powder particles in the exhaust gas to undergo pulverization and other processes, avoiding waste of water resources, and avoiding the problem of generating a large amount of sewage that cannot be digested. The problem of high energy consumption of the spray drying tower 100 is solved, and the production capacity of the spray drying tower 100 is improved.

[0048] Among them, the recovery pipe 300, the collecting bin 400, the screw feeder 500, the weighing device 410, the Roots blower, the atomizing chamber 110, the atomizer 120, the heater 130 and the powder conveyor belt 700 can all be understood as the prior art, and the specific structures of the recovery pipe 300, the collecting bin 400, the screw feeder 500, the weighing device 410, the Roots blower, the atomizing chamber 110, the atomizer 120, the heater 130 and the powder conveyor belt 700 are not repeated.

[0049] Embodiment 2:

[0050] This embodiment provides a ceramic powder production line, wherein the ceramic powder production line includes the ceramic powder recovery system of the above embodiment. Thus, the ceramic powder production line can have all the features and beneficial effects of the above ceramic powder recovery system, which will not be repeated here.

[0051] In summary, the present application discloses a ceramic powder recovery system and a ceramic powder production line, wherein the ceramic powder recovery system includes a spray drying tower, a bag dust collector and a recovery pipeline, the bag dust collector is connected to the spray drying tower, the bag dust collector is used to collect fine powder particles in the tail gas in the spray drying tower, the recovery pipeline is connected to the bag dust collector and the spray drying tower, and the recovery pipeline is used to send the fine powder particles in the bag dust collector back to the spray drying tower. The present application returns the fine powder particles collected in the bag dust collector to the spray drying tower, so that the fine powder particles are fused with the droplets in the spray drying tower and circulate to form powder, thereby avoiding excessive sewage caused by the recycling of fine powder by pulping, and greatly reducing the energy consumption of re-atomizing and drying into powder after pulping, which can improve the production capacity of the spray drying tower and reduce the energy consumption of the spray drying tower.

[0052] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A ceramic powder recovery system, characterized in that: include: Spray drying tower; A bag dust collector, the bag dust collector is connected to the spray drying tower, and the bag dust collector is used to collect fine powder particles in the tail gas in the spray drying tower; A recovery pipe is connected to the bag filter and the spray drying tower, and is used to return the fine powder particles in the bag filter to the spray drying tower.

2. The ceramic powder recovery system according to claim 1, characterized in that: Also includes: A collecting bin is located between the bag filter and the recovery pipe, and is used to collect fine powder particles shaken off by the bag filter.

3. The ceramic powder recovery system according to claim 2, characterized in that: Also includes: A screw feeder is located between the collecting bin and the recovery pipe, and is used to transport the fine powder particles in the collecting bin to the recovery pipe.

4. The ceramic powder recovery system according to claim 2, characterized in that: Also includes: A weighing device is connected to the collecting bin and is used to measure the weight of the fine powder particles in the collecting bin.

5. The ceramic powder recovery system according to claim 3, characterized in that: Also includes: A first fan is connected to the recovery pipeline, and is used to provide power for the recovery pipeline to transport fine powder particles.

6. The ceramic powder recovery system according to claim 5, characterized in that: The first blower comprises a Roots blower, one end of which is connected to the screw feeder, and the other end of which is connected to the recovery pipeline.

7. The ceramic powder recovery system according to claim 1, characterized in that: The spray drying tower is connected with a powder conveyor belt, and the powder conveyor belt is used to convey the ceramic powder in the spray drying tower.

8. The ceramic powder recovery system according to claim 1, characterized in that: The spray drying tower comprises an atomizing chamber and an atomizer, wherein the atomizer is used to spray the ceramic slurry into the atomizing chamber so that the ceramic slurry is atomized in the atomizing chamber to form droplets; The recovery pipe is in communication with the atomization chamber, and is used to transport the fine powder particles to the atomization chamber so that the fine powder particles are fused with the mist droplets.

9. The ceramic powder recovery system according to claim 8, characterized in that: The spray drying tower also includes: A heater is connected to the atomizing chamber and is used to provide hot air to the atomizing chamber so that the mist droplets are dried to form ceramic powder.

10. A ceramic powder production line, characterized in that: It comprises a ceramic powder recovery system as described in any one of claims 1 to 9.

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