A submerged screening device for brown corundum particles

Abstract

The utility model belongs to brown corundum deep processing field, specifically discloses a kind of for brown corundum particle's sink water screening device, including water mill and screening tank, the screening tank is cylindrical tank body, and the lower end of screening tank is equipped with agitator;The top of screening tank is equipped with water inlet, and the water inlet of screening tank is connected with the water outlet of water mill by connecting pipe, and the first control valve is equipped in the connecting pipe near screening tank end;The lower end of screening tank is equipped with backflow port, and the backflow port of screening tank is communicated with the water inlet pipe of water mill by backflow pipe, and the second control valve is equipped in the backflow pipe near screening tank end;The middle part of screening tank is equipped with water outlet pipe, and the third control valve is equipped in the water outlet pipe near screening tank end, and water outlet pipe is connected with drying machine;The device is according to the principle that weight influences sink speed, and the size of particle is screened by controlling sedimentation time method;The device structure is simple, and it is easy to operate, and only needs to slightly change existing production line, and the accurate screening of brown corundum particle can be realized.

Description

Technical Field

[0001] This utility model belongs to the field of deep processing of brown fused alumina, and specifically relates to a water-sedimentation screening device for brown fused alumina particles. Background Technology

[0002] Fused alumina includes four types: white fused alumina (WFA), dense fused alumina (DFA), sub-white fused alumina (FWFA), and brown fused alumina (BFA). It is an important raw material for making high-grade refractory materials and is also widely used in the abrasive industry. Fused alumina is made by using industrial alumina or high-alumina bauxite as the main raw material, with the addition of additives, and is smelted at a high temperature of over 2000 degrees Celsius in an electric arc furnace and then cooled and crystallized. It is then processed through crushing, iron removal, screening and other processes.

[0003] After being crushed, corundum needs to be screened. The particle size of corundum determines the use of corundum powder. The smaller the particle size, the higher the value. How to achieve a micron-level particle size during screening has always been a technical challenge.

[0004] Existing screening technologies generally use sieves for screening. During screening, corundum is first ground, then dried, and finally the completely dried corundum powder is pulverized and screened. However, this screening technology cannot completely remove the moisture contained in the corundum powder. If the requirements for the corundum powder are high, it is difficult to completely pulverize the corundum powder during the pulverization process, resulting in agglomeration and screening difficulties, leading to low production efficiency. There is an urgent need for a method that can solve this problem. Utility Model Content

[0005] In view of the problems existing in the background technology, the present invention provides a water settling and screening device for brown fused alumina particles.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a water-based screening device for brown corundum particles, comprising a water mill and a screening tank, wherein the screening tank is a cylindrical tank with a stirrer at the lower end; a water inlet is provided at the top of the screening tank, and the water inlet of the screening tank is connected to the water outlet of the water mill through a connecting pipe, with a first control valve provided near the end of the connecting pipe; a reflux port is provided at the lower end of the screening tank, and the reflux port of the screening tank is connected to the water inlet pipe of the water mill through a reflux pipe, with a second control valve provided near the end of the reflux pipe; a water outlet pipe is provided in the middle of the screening tank, with a third control valve provided near the end of the water outlet pipe, and the water outlet pipe is connected to a dryer.

[0007] The inlet pipe and return pipe are connected by a tee.

[0008] The first control valve, the second control valve, and the third control valve are all solenoid valves.

[0009] The beneficial effects of this utility model are as follows: This utility model provides a settling and screening device for brown fused alumina particles. This device screens the particles by controlling the settling time based on the principle that weight affects the settling speed. This device has a simple structure and is easy to operate. It can achieve accurate screening of brown fused alumina particles with only slight modifications to the existing production line. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model.

[0011] In the diagram: 1. Water mill, 2. Screening tank, 3. Inlet pipe, 4. Connecting pipe, 5. Return pipe, 6. Outlet pipe, 7. First control valve, 8. Second control valve, 9. Third control valve, 10. Agitator. Detailed Implementation

[0012] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0013] The following detailed description of the specific embodiments of this utility model, in conjunction with the accompanying drawings, illustrates the following: A water-based sieving device for brown fused alumina particles includes a water mill 1 and a sieving tank 2. The sieving tank 2 is a cylindrical tank, and a stirrer 10 is provided at its lower end. The stirrer 10 is used to thoroughly mix the water and brown fused alumina particles in the sieving tank 2. A water inlet is provided at the top of the sieving tank 2, and the water inlet of the sieving tank 2 is connected to the water outlet of the water mill 1 via a connecting pipe 4. A first control valve 7 is provided near the end of the connecting pipe 4 near the sieving tank 2. The water mill 1 in this sieving device can be a single water mill or a group of water mills. A return port is provided at the lower end of the sieving tank 2. The return port of the screening tank 2 is connected to the water inlet pipe 3 of the water mill 1 through the return pipe 5. A second control valve 8 is provided near the end of the return pipe 5 near the screening tank 2. The function of the return pipe 5 is to return the brown corundum particles that are out of tolerance deposited at the bottom of the screening tank 2 to the water mill 1 for grinding again so that they can meet the process requirements. In actual use, the bottom surface of the screening tank 2 is provided with a drain pipe for cleaning the screening tank 2. This is a conventional design and will not be described here. A water outlet pipe 6 is provided in the middle of the screening tank 2. A third control valve 9 is provided near the end of the water outlet pipe 6 near the screening tank 2. The water outlet pipe 6 is connected to the dryer. The first control valve 7, the second control valve 8 and the third control valve 9 are all solenoid valves.

[0014] The usage process of this utility model is as follows: Crushed brown fused alumina fragments enter the water mill 1 through the feed pipe. After processing by the water mill 1, the mixture containing water and brown fused alumina particles enters the screening tank 2 through the connecting pipe 4. At this time, the first control valve 7 is opened, and the second control valve 8 and the third control valve 9 are closed. When the mixture of water and brown fused alumina particles reaches a certain height in the screening tank 2, the first control valve 7 is closed, and the agitator 10 is started. Under the action of the agitator 10, the mixture of water and brown fused alumina particles is fully mixed in the screening tank 2. Then, the agitator 10 is turned off, and sedimentation is initiated and timed. During the timing process, the mixture in the screening tank 2 begins to settle. During sedimentation, larger brown fused alumina particles, due to their greater weight, settle faster. Under this principle, after a certain period of time, the water... Larger brown fused alumina particles in the mixture will settle below the height of the outlet pipe 6. The particle size of the brown fused alumina particles in the mixture above the outlet pipe 6 will be less than or equal to a standard value. When the standard value is equal to the required value, the third control valve 9 is opened to release all or part of the mixture in the outlet pipe 6 and above the outlet pipe 6. The released mixture is connected to the dryer through a pipeline. After drying, it becomes qualified brown fused alumina particles. After the mixture is released from the outlet pipe 6, the third control valve 9 is closed and the second control valve 8 is opened. At this time, the mixture at the bottom of the screening tank 2 is released. This mixture flows back to the inlet of the water mill 1 through the return port of the screening tank 2 and re-enters the water mill 1 for processing. This cyclical operation reduces production costs and waste.

[0015] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0016] The parts of this utility model not described in detail are existing technologies.

Claims

1. A water-based screening device for brown corundum particles, comprising a water mill (1) and a screening tank (2), characterized in that: The screening tank (2) is a cylindrical tank with a stirrer (10) at the lower end. The top of the screening tank (2) has a water inlet, which is connected to the outlet of the water mill (1) via a connecting pipe (4). A first control valve (7) is provided at the end of the connecting pipe (4) near the screening tank (2). The lower end of the screening tank (2) has a return port, which is connected to the water inlet pipe (3) of the water mill (1) via a return pipe (5). A second control valve (8) is provided at the end of the return pipe (5) near the screening tank (2). The middle part of the screening tank (2) has a water outlet pipe (6), which has a third control valve (9) at the end near the screening tank (2). The water outlet pipe (6) is connected to the dryer.

2. The settling and screening device for brown corundum particles according to claim 1, characterized in that: The inlet pipe (3) and the return pipe (5) are connected by a tee.

3. The settling and screening device for brown corundum particles according to claim 1, characterized in that: The first control valve (7), the second control valve (8), and the third control valve (9) are all solenoid valves.

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