CN216756758U

CN216756758U - Aluminum oxide impurity removing device

Info

Publication number: CN216756758U
Application number: CN202220151935.XU
Authority: CN
Inventors: 李旭波; 苗勇波; 张海忠; 乔建安; 孙小虎; 史学良; 李晓峰; 李金超; 刘荟鑫; 李军秀; 董理; 李亚辉
Original assignee: Henan Kdneu International Engineering Co ltd
Current assignee: Henan Kdneu International Engineering Co ltd
Priority date: 2022-01-20
Filing date: 2022-01-20
Publication date: 2022-06-17
Anticipated expiration: 2032-01-20

Abstract

The utility model provides an alumina impurity removal device, which comprises: the vibrating screen comprises a first-stage linear vibrating screen, an intermediate chute, a second-stage sand settling chute, a discharging chute and a third-stage circular vibrating screen, wherein the intermediate chute is arranged below the first-stage linear vibrating screen, the second-stage sand settling chute is connected to the rear of the intermediate chute, the discharging chute is connected to the rear of the second-stage sand settling chute, and the third-stage circular vibrating screen is connected to the lower side of the second-stage sand settling chute. According to the utility model, through the three-stage impurity removal system, impurities can be automatically removed, particle impurities with various sizes can be effectively separated, the screen mesh is prevented from being blocked, and the purity of aluminum oxide is improved.

Description

Aluminum oxide impurity removing device

Technical Field

The utility model belongs to the technical field of alumina purification, and particularly relates to an alumina impurity removal device.

Background

The production of electrolytic aluminum takes alumina as raw material, and in the production and transportation process of alumina, as the procedures of roasting, conveying, stacking, packaging, transporting, storing and the like are carried out, packing material fragments, broken stone blocks, iron slag, ore sand and alumina slagging blocks can be mixed into the alumina, and the alumina is removed before being sent into an electrolysis workshop, otherwise, a conveying pipeline and a chute can be blocked, and the conveying and the production are influenced. Traditional edulcoration dross removal mechanism sieves for simple slagging-off filter screen or strength suspension technique, and the debris that sieves out contain impurity more, need further to improve the screening effect.

SUMMERY OF THE UTILITY MODEL

Aiming at the technical problem, the utility model provides an aluminum oxide impurity removal device.

In order to achieve the purpose, the technical scheme of the utility model is realized as follows:

an alumina impurity removal device comprising: the vibrating screen comprises a first-stage linear vibrating screen, an intermediate chute, a second-stage sand settling chute, a discharging chute and a third-stage circular vibrating screen, wherein the intermediate chute is arranged below the first-stage linear vibrating screen, the second-stage sand settling chute is connected to the rear of the intermediate chute, the discharging chute is connected to the rear of the second-stage sand settling chute, and the third-stage circular vibrating screen is connected to the lower side of the second-stage sand settling chute.

The primary linear vibrating screen comprises a shell A provided with a feeding hole A and a discharging hole A, a screen A is arranged in the shell A, and the screen A is positioned between the feeding hole A and the discharging hole A; a slag discharge port is formed in one side of the shell A and communicated with the space above the screen A to discharge slag.

The feed inlet A is connected with the shell A through a soft joint A, and the slag discharge port is connected with the slag discharge pipe through a soft joint B.

The middle chute comprises a chute body A, one end of the chute body A is provided with a blocking plate, and the other end of the chute body A is provided with a discharge hole B; the top of the tank body A is connected with a primary linear vibrating screen through a feed port B; the bottom of the tank body A is provided with a ventilation plate A, an inflation box A is arranged below the ventilation plate A, the inflation box A is connected with an air inlet pipe A, and the air inlet pipe A is provided with a pneumatic ball valve.

The feed inlet B is in flexible connection with the discharge outlet A.

The secondary sand settling chute comprises a chute body B, wherein the inlet end of the chute body B is connected with the discharge port B, the outlet end of the chute body B is provided with a discharge port C and a sand discharge bent pipe, and the discharge port C is positioned above the sand discharge bent pipe; the discharge hole C is connected with a discharge chute; the sand discharge elbow is connected with the three-stage circular vibrating screen; a ventilation plate B is arranged below the tank body B, an inflation box B is arranged below the ventilation plate B, and an air inlet pipe B is arranged on the inflation box B.

The inlet end of the secondary sand settling chute is lower than the outlet end, and the air permeable plate B is obliquely arranged from the inlet end to the outlet end.

The three-stage circular vibrating screen comprises a shell B, wherein a feed inlet C and a discharge outlet D are arranged on the shell B, a screen B is arranged in the shell B, and the screen B is positioned between the feed inlet C and the discharge outlet D; and a sand discharge port communicated with the space above the screen B is formed in the side surface of the shell B.

The feed inlet C is connected with the sand discharge elbow pipe, and a pneumatic butterfly valve is arranged between the feed inlet C and the sand discharge elbow pipe.

The shell A is provided with a vibration motor A for driving the screen A to vibrate, and the vibration motor A is connected with the screen A; the shell B is provided with a vibration motor B for driving the screen B to vibrate, and the vibration motor B is connected with the screen B; and the mesh number of the screen B is larger than that of the screen A.

The utility model has the beneficial effects that: the alumina containing impurities is subjected to primary separation in a primary linear vibrating screen, so that large-particle impurities can be removed in advance; alumina powder containing a small amount of small particles falls into a middle chute, the alumina powder continuously enters a sand setting chute under the action of gas in the middle chute, under the action of gas in the sand setting chute, the alumina floats on the upper layer due to low density, and the small particle impurities sink on the bottom due to high density, a pneumatic valve at the lower part of a discharging section of the sand setting chute is periodically opened, the small particle impurities are secondarily separated and discharged, but a small amount of alumina powder is still mixed in the small particle impurities, the mixture falls into a three-stage circular vibrating screen, a fine screen in the circular vibrating screen separates the small particle impurities for three times, and pure alumina under the screen is collected and then returns to a subsequent system; the pure alumina separated from the sand setting chute enters a discharging chute through a discharging hole positioned at the upper part of the sand setting chute. According to the utility model, through the three-stage impurity removal system, impurities can be automatically removed, particle impurities with various sizes can be effectively separated, the screen mesh is prevented from being blocked, and the purity of alumina is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of the present invention.

In the figure: the device comprises a primary linear vibrating screen 1, a middle chute 2, a secondary sand settling chute 3, a discharge chute 4, a tertiary circular vibrating screen 5, a feed inlet A1-1, a soft joint A1-2, a top cover 1-3, a shell A1-4, a screen A1-5, a vibrating motor A1-6, a discharge outlet A1-7, a slag discharge outlet 1-8, a soft connecting head B1-9, a slag discharge pipe 1-10, a feed inlet B2-1, a blocking plate 2-2, a tank body A2-3, a ventilating plate A2-4, an inflation box A2-5, a pneumatic ball valve 2-6, an air inlet pipe A2-7, a discharge outlet B2-8, a tank body B3-1, a ventilating plate B3-2, an inflation box B3-3, an air inlet pipe B3-4, a discharge outlet C3-5, a sand discharge elbow 3-6, a pneumatic butterfly valve 3-7, The sand discharging device comprises a feeding port C5-1, a shell B5-2, a screen B5-3, a discharging port D5-4, a vibration motor B5-5, a support 5-6 and a sand discharging port 5-7.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.

Example 1

An alumina impurity removal device, as shown in fig. 1, includes: one-level linear vibrating screen 1, middle chute 2, second grade grit chute 3, ejection of compact chute 4 and tertiary circle shake sieve 5, one-level linear vibrating screen 1 below is middle chute 2, middle chute 2 rear is connected with second grade grit chute 3, second grade grit chute 3 rear is provided with ejection of compact chute 4, the below of second grade grit chute 3 is connected with tertiary circle and shakes sieve 5. Alumina powder at first enters into one-level linear vibrating screen 1, can directly enter into 2 in the middle chute that is located one-level linear vibrating screen 1 below under the effect of gravity through the alumina powder of primary screening, middle chute 2 can carry alumina powder to second grade sand setting chute 3 and carry out the secondary separation, the pure alumina of separation back is carried the ejection of compact chute 4 that is located second grade sand setting chute 3 rear, the tertiary circle that contains impurity alumina entering second grade sand setting chute 3 below under the effect of gravity sieves 5, further sieve the edulcoration.

Example 2

An aluminum oxide impurity removal device is shown in figure 1 and is different from embodiment 1 in that a primary linear vibrating screen 1 comprises a shell, a feed inlet A1-1 is located at the top of the shell A1-4, a discharge outlet A1-7 is located at the bottom of the shell A1-4, a screen A1-5 is installed inside the shell A1-4, a slag discharge outlet 1-8 is formed in the side wall of the shell A1-4 above the screen A1-5, a vibrating motor A1-6 for driving the screen A1-5 to vibrate is installed on the shell A1-4, and the vibrating motor A1-6 is connected with the screen A1-5. The alumina containing impurities is primarily screened in the first-stage linear vibrating screen 1 through a screen A1-5, alumina powder is discharged from a discharge port A1-7 after passing through a screen A1-5, large-particle impurities are left on a coarse screen A1-5 and are discharged to a specified position through a slag discharge port 1-8 and a slag discharge pipe 1-10 under the action of vibration.

Example 3

An aluminum oxide impurity removal device is shown in figure 1 and is different from the embodiment 2 in that the middle chute 2 comprises a chute body A2-3, one end of the chute body A2-3 is provided with a blocking plate 2-2, and the other end of the chute body is provided with a discharge hole B2-8; the top of the tank body A2-3 is connected with a first-stage linear vibrating screen 1 through a feed inlet B2-1; the bottom of the tank body A2-3 is provided with a ventilation plate A2-4, an inflation tank A2-5 is arranged below the ventilation plate A2-4, the inflation tank A2-5 is connected with an air inlet pipe A2-7, and the air inlet pipe A is provided with a pneumatic ball valve 2-6. The alumina powder separated from the first-stage linear vibrating screen 1 continuously flows into the second-stage sand settling chute 3 under the action of the air force in the middle chute 2, and the middle chute 2 mainly transfers the alumina powder.

Example 4

An aluminum oxide impurity removal device is shown in figure 1, and is different from embodiment 3 in that the secondary sand settling chute 3 comprises a chute body B3-1, the inlet end of the chute body B3-1 is connected with a discharge port B2-8, the outlet end of the chute body B3-1 is provided with a discharge port C3-5 and a sand discharge bent pipe 3-6, and the discharge port C3-5 is positioned above the sand discharge bent pipe 3-6; the discharge port C3-5 is connected with the discharge chute 4; the sand discharge elbow 3-6 is connected with a three-stage circular vibrating screen 5; an air permeable plate B3-2 is arranged below the tank body B3-1, an inflation box B3-3 is arranged below the air permeable plate B3-2, and an air inlet pipe B3-4 is connected to the inflation box B3-3; the inlet end of the secondary sand settling chute 3 is lower than the outlet end, and the air permeable plate B3-2 is inclined downwards from the inlet end to the outlet end. Alumina powder enters a secondary sand settling chute 3 through an intermediate chute 2, the material reaches a fluidized state under the pneumatic action of an aeration box B3-3, the alumina floats on the upper layer in a tank body B3-1 due to low density in the state, and small-particle impurities sink on the bottom in a tank body B3-1 due to high density; pure alumina flows into a subsequent system through a discharge chute 4 at the upper part of the discharge end of the secondary grit chute 3; small particle impurities and a small amount of alumina powder are discharged by periodically opening a pneumatic butterfly valve 3-7 at the lower part of the sand discharge elbow 3-6.

Example 5

An aluminum oxide impurity removal device is shown in figure 1 and is different from embodiment 4 in that the three-stage circular vibrating screen 5 comprises a shell B5-2, a feed inlet C5-1 and a discharge outlet D5-4 are arranged on the shell B5-2, a feed inlet C5-1 is positioned at the top of the shell and is connected with a secondary sand settling chute 3, and a pneumatic butterfly valve 3-7 is arranged between the feed inlet C5-1 and the secondary sand settling chute 3; a screen B5-3 is arranged inside the shell B5-2, and the screen B5-3 is positioned between the feed inlet C5-1 and the discharge outlet D5-4; the discharge port is positioned on the side surface of the shell B5-2 below the screen B5-3, and the side surface of the shell B5-2 above the screen B5-3 is provided with a sand discharge port 5-7; a vibration motor B5-5 for driving the screen B5-3 to vibrate is arranged on the shell B5-2, the vibration motor B5-5 is connected with the screen B5-3, and the mesh number of the screen B5-5 is larger than that of the screen A1-5; the bottom of the shell B5-2 is provided with a support 5-6, which is convenient for fixing the machine. Small particle impurities and a small amount of alumina powder in the secondary sand settling chute 3 enter the three-stage circular vibrating screen 5 by periodically opening the pneumatic butterfly valve 3-7, the screen B5-3 screens out pure alumina powder and small particle impurities under the action of the vibrating motor B5-5, the impurities are discharged from the sand discharge port 5-7 at the upper edge of the screen B5-3, and the alumina powder is discharged from the discharge port D5-4 at the lower edge of the screen B5-3 and returns to a subsequent system after being collected.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. Alumina edulcoration device, its characterized in that includes: one-level linear vibrating screen (1), middle chute (2), second grade grit chute (3), ejection of compact chute (4) and tertiary circle shake sieve (5), one-level linear vibrating screen (1) below is equipped with middle chute (2), middle chute (2) rear is connected with second grade grit chute (3), ejection of compact chute (4) is connected at second grade grit chute (3) rear, tertiary circle is connected to the below of second grade grit chute (3) and is shaken sieve (5).

2. The alumina impurity removing device according to claim 1, wherein the primary linear vibrating screen (1) comprises a shell A (1-4) provided with a feeding port A (1-1) and a discharging port A (1-7), a screen A (1-5) is arranged inside the shell A (1-4), and the screen A (1-5) is positioned between the feeding port A (1-1) and the discharging port A (1-7); one side of the shell A (1-4) is provided with a slag discharge port (1-8), and the slag discharge port (1-8) is communicated with the space above the screen A (1-5) for discharging slag.

3. The alumina impurity removing device according to claim 2, wherein the feed inlet A (1-1) is connected with the shell A (1-4) through a soft joint A (1-2), and the slag discharge port (1-8) is connected with the slag discharge pipe (1-10) through a soft joint B (1-9).

4. An aluminum oxide impurity removal device according to claim 2 or 3, wherein the intermediate chute (2) comprises a chute body A (2-3), one end of the chute body A (2-3) is provided with a blocking plate (2-2), and the other end is provided with a discharge hole B (2-8); the top of the tank body A (2-3) is connected with the first-stage linear vibrating screen (1) through a feed port B (2-1); the bottom of the tank body A (2-3) is provided with a ventilation plate A (2-4), an inflation box A (2-5) is arranged below the ventilation plate A (2-4), the inflation box A (2-5) is connected with an air inlet pipe A (2-7), and the air inlet pipe A is provided with a pneumatic ball valve (2-6).

5. An alumina impurity removal device according to claim 4, wherein the feed inlet B (2-1) is in flexible connection with the discharge outlet A (1-7).

6. The alumina impurity removal device according to claim 4, wherein the secondary sand settling chute (3) comprises a tank body B (3-1), the inlet end of the tank body B (3-1) is connected with the discharge port B (2-8), the outlet end of the tank body B (3-1) is provided with a discharge port C (3-5) and a sand discharge elbow (3-6), and the discharge port C (3-5) is positioned above the sand discharge elbow (3-6); the discharge port C (3-5) is connected with a discharge chute (4); the sand discharge elbow (3-6) is connected with the three-stage circular vibrating screen (5); a ventilation plate B (3-2) is arranged below the tank body B (3-1), an inflation box B (3-3) is arranged below the ventilation plate B (3-2), and an air inlet pipe B (3-4) is arranged on the inflation box B (3-3).

7. An alumina impurity removal device according to claim 6, wherein the inlet end of the secondary grit chamber (3) is lower than the outlet end, and the gas permeable plate B (3-2) is arranged in an inclined manner from the inlet end to the outlet end.

8. The alumina impurity removing device according to claim 6 or 7, wherein the three-stage circular vibrating screen (5) comprises a shell B (5-2), a feeding hole C (5-1) and a discharging hole D (5-4) are formed in the shell B (5-2), a screen B (5-3) is arranged inside the shell B (5-2), and the screen B (5-3) is positioned between the feeding hole C (5-1) and the discharging hole D (5-4); the side surface of the shell B (5-2) is provided with a sand discharge port (5-7) communicated with the space above the screen B (5-3).

9. An aluminum oxide impurity removing device according to claim 8, wherein the feed inlet C (5-1) is connected with a sand discharge elbow (3-6), and a pneumatic butterfly valve (3-7) is arranged between the feed inlet C (5-1) and the sand discharge elbow (3-6).

10. An alumina impurity removal device according to claim 8, wherein the shell A (1-4) is provided with a vibration motor A (1-6) for driving the screen A (1-5) to vibrate, and the vibration motor A (1-6) is connected with the screen A (1-5); the shell B (5-2) is provided with a vibration motor B (5-5) for driving the screen B (5-3) to vibrate, and the vibration motor B (5-5) is connected with the screen B (5-3); and the mesh number of the screen B (5-3) is larger than that of the screen A (1-5).