Fluorine-loaded alumina powder mixing and uniform conveying device

Abstract

The utility model discloses a uniform mixing and conveying device for fluorine-loaded alumina powder. The uniform mixing and conveying device comprises a mixing box, the two feeding pipes are arranged on the two sides of the upper portion of the mixing box respectively, and the feeding ends of the two feeding pipes are correspondingly connected with the discharging openings in the bottoms of the fluorine carrying bins respectively; the two flow guide and material distribution plates are arranged in the material mixing box in an inverted splayed shape, and the feeding ends of the two flow guide and material distribution plates correspond to the discharging ends of the two feeding pipes respectively; the two discharging pipes are arranged on the two sides of the lower portion of the mixing box respectively, and the discharging ends of the discharging pipes are correspondingly connected with the ultra-dense phase conveying chute lines respectively.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum electrolysis equipment, in particular to a fluorine-carrying aluminum oxide powder mixing and uniform feeding device. Background Art

[0002] The raw material required for aluminum electrolysis production is fluorine-containing alumina, which is purified and adsorbed by alumina and temporarily stored in the silo. The purification system and the fluorine-containing silo are located between the two electrolytic cell buildings. Since the fluorine-containing alumina silo is cylindrical, there is only one entrance at the top of the silo near the silo wall. The powder is affected by the conveying wind pressure during the falling process. The large particle size directly falls vertically to the bottom of the silo, and the powder with too fine particle size floats and falls. As a result, two kinds of powder with different particle sizes are formed in the fluorine-containing silo, which are stored in the two density areas after separation.

[0003] There are 4 feeding ports at the bottom of the fluorine-containing alumina silo, which feed the electrolytic cells of the two electrolytic plants respectively. Each electrolytic plant is divided into 2 super-dense phase feed lines. Due to the unevenness of the powder in the silo, the feed line with large particle size of the feed chute is often blocked by sediment, and the feed line with small particle size has poor fluidity due to high viscosity and poor feed quality. If the electrolytic aluminum materials are uneven for a long time, the electrolytic cell effect will occur frequently and the needle vibration will fluctuate seriously in the daily production process, affecting the current efficiency. Utility Model Content

[0004] In view of the above technical problems, the utility model provides a device for uniformly mixing and feeding fluorine-loaded alumina powder.

[0005] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0006] A fluorine-carrying aluminum oxide powder mixing and uniform feeding device, comprising:

[0007] Mixing box;

[0008] Two feeding pipes are respectively arranged on both sides of the upper part of the mixing box, and the feeding ends thereof are respectively connected to a corresponding feeding port at the bottom of the fluorine-carrying bin;

[0009] Two guide and dividing plates are arranged in an inverted eight-shaped shape in the mixing box, and the feed ends correspond to the discharge ends of the two feed pipes respectively;

[0010] Two discharge pipes are respectively arranged on both sides of the lower part of the mixing box, and the discharge ends thereof are respectively connected to the super-dense phase material conveying chute lines.

[0011] The top of the mixing box is provided with an air vent, and an air-permeable dust-proof cloth is provided on the air vent.

[0012] A secondary mixing mechanism is arranged at the bottom of the inner wall of the mixing box for remixing the materials.

[0013] The secondary mixing mechanism comprises:

[0014] Air chamber cavity;

[0015] The boiling breathable cloth is arranged on the top of the air chamber cavity, and its four sides are connected to the inner wall of the mixing box;

[0016] The air inlet duct is arranged at the bottom of the mixing box, one end of which is connected to the air supply device, and the other end is connected to the air chamber cavity.

[0017] The beneficial effects of the utility model are as follows: the utility model has a simple structure, low manufacturing cost, and convenient maintenance. The mixing box mixes the powders in different bins through repeated collisions, boiling, fusion, and mixing, effectively solving the problem of segregation of fluorine-containing alumina powders of different particle sizes in the fluorine-containing alumina bin, fundamentally solving the problem of blocking the feeding chute due to uneven fluorine-containing alumina powders, reducing the labor intensity increased by personnel in regular dredging and cleaning of the chute, and reducing the safety risk of pulling the air supply rubber hose to a height of 14 meters in the temporary dredging and cleaning of the chute. It can effectively reduce the fluctuation and low efficiency of the electrolytic cell caused by the unevenness of the fluorine-containing alumina powder, and has good economic and practical promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0019] Figure 1 It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0021] like Figure 1 As shown, a fluorine-loaded alumina powder uniformly mixed feeding device comprises: a mixing box 3; two feeding pipes 1, which are respectively arranged on both sides of the upper part of the mixing box 3, and the feeding ends thereof are respectively connected to a discharge port at the bottom of a fluorine-loaded bin; two guide and dividing plates 4, which are arranged in an inverted eight-shaped shape in the mixing box 3, and the feeding ends are respectively corresponding to the discharge ends of the two feeding pipes 1; two discharge pipes 5, which are respectively arranged on both sides of the lower part of the mixing box 3, and the discharge ends thereof are respectively connected to the super-dense phase feeding chute lines.

[0022] like Figure 1 As shown, a vent is provided on the top of the mixing box 3, and a breathable dust-proof cloth 2 is provided on the vent.

[0023] like Figure 1 As shown, a secondary mixing mechanism is provided at the bottom of the inner wall of the mixing box 3 for re-mixing the materials.

[0024] like Figure 1 As shown, the secondary mixing mechanism includes: an air chamber cavity 7; a boiling breathable cloth 6, which is arranged on the top of the air chamber cavity 7, and its four sides are interconnected with the inner wall of the mixing box 3; an air inlet duct 8, which is arranged at the bottom of the mixing box 3, one end of which is connected to the air supply equipment, and the other end is connected to the air chamber cavity 7.

[0025] When the utility model is in use, the fluorine-loaded alumina powder enters into two feeding pipes 1 from the bottom of the fluorine-loaded bin respectively, and the fluorine-loaded alumina powder of different particle sizes boils and collides for the first time in the upper part of the inner cavity of the mixing box 3 to be mixed, and then rushes to the two guide and dividing plates 4 to impact back and forth for the second time to be mixed, and continues to sink under the action of gravity and falls into the lower part of the two guide and dividing plates 4 to complete the third mixing, and then is blown to boil the powder again by the 6000Pa feeding wind pressure sprayed from the boiling breathable cloth 6 to boil the powder for the fourth time to be mixed, and finally the evenly mixed fluorine-loaded alumina powder flows into the two discharging pipes 5 to enter the super-dense phase feeding chute line, wherein, a part of the boiling air supply from the air chamber cavity 7 inside the mixing box 3 is discharged from the breathable dust-proof cloth 2 on the top of the mixing box 3, and the other part is discharged from the super-dense phase feeding chute line with the powder.

[0026] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation on the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the claims attached to the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims, or the equivalent forms of such scope and boundaries.

Claims

1. A device for uniformly mixing and feeding fluorine-loaded alumina powder, characterized in that: include: Mixing box (3); Two feed pipes (1) are respectively arranged on both sides of the upper part of the mixing box (3), and the feed ends thereof are respectively connected to a corresponding feed outlet at the bottom of the fluorine-carrying bin; Two flow guide and material distribution plates (4) are arranged in an inverted figure eight shape in the mixing box (3), and the feed ends thereof correspond to the discharge ends of the two feed pipes (1) respectively; Two discharge pipes (5) are respectively arranged on both sides of the lower part of the mixing box (3), and the discharge ends thereof are respectively connected to the super-dense phase material conveying chute lines.

2. A fluorine-loaded aluminum oxide powder mixing and feeding device according to claim 1, characterized in that: The top of the mixing box (3) is provided with an air vent, and an air-permeable dust-proof cloth (2) is provided on the air vent.

3. The device for uniformly mixing and feeding fluorine-loaded aluminum oxide powder according to claim 1, characterized in that: The bottom of the inner wall of the mixing box (3) is provided with a secondary mixing mechanism for remixing the materials.

4. A fluorine-loaded aluminum oxide powder mixing and feeding device according to claim 3, characterized in that: The secondary mixing mechanism comprises: Air chamber cavity (7); A boiling breathable cloth (6) is arranged on the top of the air chamber cavity (7), and its four sides are connected to the inner wall of the mixing box (3); An air inlet duct (8) is arranged at the bottom of the mixing box (3), with an air outlet at one end connected to the air supply device and an air outlet at the other end communicating with the air chamber cavity (7).

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