Large flow alumina automatic sand cleaning and separation equipment and separation method

Abstract

The present invention discloses a large-flow alumina automatic sand cleaning and separation device, comprising a material distribution box and three sand removal boxes, the three sand removal boxes are evenly distributed around the material distribution box and are respectively connected to the material distribution box, the sand removal box comprises a motor, a wire mesh, a collecting hopper, a filtering device and a stirring device; the wire mesh is arranged in the sand removal box, and the stirring device is arranged in the filtering device. The present invention also discloses a separation method of a large-flow alumina automatic sand cleaning and separation device, wherein the alumina is first filtered through the wire mesh, and then collected in the filtering device for filtering again; the stirring device stirs the alumina containing impurities into the feed pipe, and then discharges it into the fully automatic plate material removal device for screening, and finally obtains clean alumina. The device and method can realize two-stage filtration and two-stage sand removal, and the capacity of processing alumina can reach 300 tons / hour, with high sand removal efficiency, thorough sand removal and good sand removal effect.

Description

Technical Field

[0001] The invention belongs to the technical field of aluminum oxide processing, and in particular relates to large-flow aluminum oxide automatic sand cleaning and separation equipment and a separation method thereof. Background Art

[0002] The production process of alumina is the process of separating aluminum from the soil by physical and chemical methods. Due to the dual nature of aluminum, aluminum exists in nature in the form of oxide minerals in large quantities, and is accompanied by a variety of oxide minerals and compound minerals. This makes the separation process of alumina complicated and difficult to grasp.

[0003] The invention patent with application publication number CN107362975A discloses an automatic desanding and impurity removal device for alumina, including a material chamber, an air separation chamber, a collecting air chamber, an air supply system and a PLC automatic control system; an inlet and an outlet are respectively arranged at both ends of the material chamber, a material level switch is arranged at the outlet, an impurity filtering unit is arranged at the upper inner part of the material chamber, and a primary impurity outlet is arranged at the bottom of the material chamber; a boiling plate is arranged below the impurity filtering unit and above the hopper; an air separation chamber is arranged below the material chamber, and an inlet is arranged on the side wall of the air separation chamber. Air outlet, an air guide plate is fixed on the side wall of the air separation chamber above the air inlet, and the non-fixed end of the air guide plate is set obliquely downward; an air outlet is set on the side wall of the air separation chamber away from the air guide plate, and the air outlet is connected to the inlet of the collecting air chamber through an exhaust flat pipe; the top of the air separation chamber is connected to the primary impurity outlet, and the bottom of the air separation chamber is provided with a secondary impurity outlet; alumina mixed with sand and debris enters the material chamber from the inlet, and under the action of low-pressure wind (the air supply pipeline sends low-pressure wind to the lower part of the material chamber hopper), the alumina boils and moves towards the outlet. A filter is set on the upper part of the material chamber. The alumina needs to cross the height of the filter in the process of moving forward, and the debris in the alumina is blocked on the filter; the sand in the alumina is deposited on the boiling plate below the filter because its specific gravity is greater than that of the alumina powder, so that the sand and debris in the alumina are automatically separated. However, the equipment has limited sand removal capacity for alumina and cannot meet the large demand for alumina from industrial enterprises. Large blocks of alumina are present during the sand removal process, which is prone to blockage. The sand removal efficiency is low, the amount of residual impurities is large, and the sand removal is not thorough. Summary of the invention

[0004] In order to solve the problems existing in the prior art, the present invention provides a large-flow alumina automatic sand cleaning and separation equipment, including a distribution box and three sand removal boxes, the three sand removal boxes are evenly distributed around the distribution box, and are respectively connected to the distribution box, the sand removal box includes a motor, a wire mesh, a collecting hopper, a filtering device and a stirring device; the wire mesh is arranged in the sand removal box, the collecting hopper is arranged below the wire mesh, the motor is arranged on the top of the sand removal box, the filtering device is arranged at the outlet below the collecting hopper, the stirring device is arranged in the filtering device, and is connected to the motor through an axle tube. The distribution box can evenly arrange the flow of alumina, and the capacity of each sand removal box in the large-flow alumina automatic sand cleaning and separation equipment to process alumina can reach 100 tons / hour, with high sand removal efficiency, good sand removal and filtration effect, thorough sand removal, and less residual impurities.

[0005] Preferably, the filtering device includes an inner ring, a material dividing partition, a sintered plate and a material containing cover, wherein the material dividing partition is spaced around the inner ring, the sintered plate is horizontally inserted into the material dividing partition, and the material containing cover is sleeved on the outside of the material dividing partition. The material dividing partition is evenly distributed and separated on the outside of the inner ring, and includes a horizontally placed partition and a vertically placed partition, wherein the horizontally placed partition has an arrow-shaped outline, is arranged below the sintered plate, and is connected between the inner ring and the material containing cover, the vertically placed partition is perpendicular to the horizontal partition, and is connected to the outline edge of the horizontal partition, and the sintered plate is inserted into the vertical partition and is parallel to the horizontal partition. Through such a setting, the fluidity of alumina can be effectively enhanced, impurities can be blocked, the precipitation of impurities can be facilitated, the filtering efficiency can be improved, and the sand removal effect can be better.

[0006] In any of the above schemes, preferably, a wind chamber I is provided below the filtering device.

[0007] In any of the above schemes, preferably, ventilation holes are arranged around the material containment cover, and the ventilation holes are connected to the ventilation pipe. The ventilation holes are arranged between the sintering plate and the horizontal partition plate, and air is supplied to the material containment cover through the air supply pipe, so that the alumina can flow evenly and smoothly, thereby improving the sand removal and separation efficiency.

[0008] In any of the above solutions, preferably, a reinforcing rib is provided on the inner side of the inner ring. The reinforcing rib is arranged on the inner ring corresponding to the discharge port of the collecting hopper, which can not only block and separate a part of impurities, but also reinforce the inner ring.

[0009] In any of the above schemes, it is preferred that the stirring device includes a sand removal ring and a paddle, and the paddle is fixedly connected below the sand removal ring. The sand removal ring is a hollow structure, which is conducive to crushing aluminum oxide. The paddle is fixed to the end of the sand removal ring and has a certain arc. There are two paddles, which is conducive to stirring impurities into the discharge pipe for discharge, and the processing efficiency is high.

[0010] In any of the above schemes, preferably, a feed pipe is provided below the stirring device, and an electric valve is provided on the feed pipe.

[0011] In any of the above solutions, preferably, a desanding press cloth is laid on the bottom of the desanding box. The desanding press cloth can filter out some impurities and enhance the desanding effect.

[0012] In any of the above schemes, it is preferred that the bottom of the sand removal box is connected to an air chamber, and the air chamber is distributed around the filtering device to facilitate the outflow of filtered alumina.

[0013] In any of the above schemes, it is preferred that the large-flow alumina automatic sand removal and separation equipment also includes a fully automatic plate-bound material removal device, the feed port of the fully automatic plate-bound material removal device is connected to the discharge pipe, and it includes a screen box and a drum screen, the drum screen is arranged in the screen box, the drum screen is connected to the motor, the main shaft of the drum screen is provided with a spiral blade I on one end close to the feed port of the screen box, and a rolling cage is sleeved on the other end, and the inner side wall of the rolling cage is provided with a spiral blade II. The spiral blade I can stably convey the alumina and effectively crush the plate-bound material, and the rolling cage can screen the impurity materials in the alumina, screen out the impurities and transport them to the discharge hopper for discharge, and the bottom of the screen box is paved with a sand removal press cloth, and the bottom of the sand removal press cloth is provided with a wind chamber II. The dust-removed alumina is screened by the drum screen, and the plate-bound material in the alumina can be continuously removed, which does not affect the operation of the system and saves manpower and material resources.

[0014] The large-flow alumina automatic sand cleaning and separation equipment of the present invention has the capacity of processing alumina of up to 300 tons / hour, has high sand removal efficiency, high degree of automation, no manual participation, good sand removal and filtration effect, thorough sand removal, less impurity residue, and more resource cost saving.

[0015] The present invention also provides a separation method of a large-flow alumina automatic sand cleaning and separation device, wherein any of the above-mentioned separation devices is used in the method, and the method comprises the following steps in chronological order:

[0016] Step 1: Put alumina into the distribution box, and then the distribution box will be input into three identical desanding boxes through the chute at the same time after the distribution;

[0017] Step 2: Alumina enters each sand removal box respectively, and is first filtered through a wire mesh. The filtered alumina falls into a collection hopper, which collects the alumina into a filter device for further filtration;

[0018] Step 3: The alumina after the second filtration is sent to the air chamber at the bottom of the sand removal box by wind power, and then discharged into the chute I;

[0019] Step 4: The stirring device stirs the alumina containing impurities into the discharge pipe, and then discharges it into the fully automatic agglomerate removal device; the fully automatic agglomerate removal device screens the alumina, and the screened clean alumina is discharged from the discharge port on the side of the screen box into the chute I, and the screened impurities are discharged from the discharge hopper;

[0020] Step 5: The clean alumina in the three sand removal boxes and the clean alumina in the three fully automatic agglomerate removal devices are collected together into chute I and discharged.

[0021] This method can achieve two-stage filtration, first filtering out larger impurities through a wire mesh, and then performing overflow filtration through a filter device; at the same time, it can achieve two-stage sand removal, first removing sand by stirring with a stirring device, and then removing sand by a fully automatic plate-crushed material removal device. The sand removal and filtration effect is good, impurities are removed thoroughly, and more resource costs are saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural diagram of a preferred embodiment of a large flow rate alumina automatic sand cleaning and separation device according to the present invention;

[0023] Figure 2 The invention provides a large flow rate aluminum oxide automatic sand cleaning and separation device. Figure 1 a front view of the illustrated embodiment;

[0024] Figure 3 The invention provides a large flow rate aluminum oxide automatic sand cleaning and separation device. Figure 1 A partial cross-sectional view of the sand removal box in the illustrated embodiment;

[0025] Figure 4 The invention provides a large flow rate aluminum oxide automatic sand cleaning and separation device. Figure 1 A schematic diagram of the structure of the filtering device in the illustrated embodiment;

[0026] Figure 5 The invention provides a large flow rate aluminum oxide automatic sand cleaning and separation device. Figure 4 A top view of the filter device shown;

[0027] Figure 6 The invention provides a large flow rate aluminum oxide automatic sand cleaning and separation device. Figure 4 A cross-sectional view of the filter device shown;

[0028] Figure 7 The invention provides a large flow rate aluminum oxide automatic sand cleaning and separation device. Figure 1 A schematic structural diagram of a fully automatic plate-bound material removal device in the illustrated embodiment;

[0029] Figure 8 The invention provides a large flow rate aluminum oxide automatic sand cleaning and separation device. Figure 7 A partial cross-sectional view of the fully automatic plate material removal device shown;

[0030] Fig. 9 The invention provides a large flow rate aluminum oxide automatic sand cleaning and separation device. Figure 1 A schematic diagram of the structure of the stirring device in the embodiment shown.

[0031] Notes in the figure:

[0032] 1- material distribution box; 2- sand removal box; 3- motor; 4- wire mesh; 5- material collection hopper;

[0033] 6-filter device, 61-inner ring, 62-material dividing plate, 63-sintering plate, 64-material container, 65-ventilation hole, 66-reinforcement rib;

[0034] 7-stirring device, 71-sand removal ring, 72-paddle;

[0035] 8-axis tube; 9-wind chamber Ⅰ; 10-discharge pipe; 11-air chamber; 12-full-automatic plate-hardened material removal device; 13-screen box; 14-drum screen; 15-spiral blade Ⅰ; 16-roller cage; 17-spiral blade Ⅱ; 18-discharge hopper; 19-wind chamber Ⅱ; 20-chute Ⅰ. DETAILED DESCRIPTION

[0036] In order to further understand the content of the present invention, the present invention will be described in detail below in conjunction with specific embodiments.

[0037] like Figure 1-9As shown, according to a preferred embodiment of the large-flow alumina automatic sand cleaning and separation equipment of the present invention, it includes a distribution box 1 and three sand removal boxes 2, the three sand removal boxes 2 are evenly distributed around the distribution box 1, and are respectively connected to the distribution box 1 through a chute, each chute is provided with a quick opening, and the bottom of the chute is provided with a wind chamber, the bottom of the distribution box 1 is provided with a distribution air chamber 11, the distribution air chamber 11 is connected to the air supply pipeline, the bottom of the distribution box 1 is connected to the distribution discharge pipe, the distribution discharge pipe is connected to the chute Ⅰ20, and each sand removal box 2 is respectively connected to the distribution discharge pipe through an air supply pipe; the sand removal box 2 includes a motor 3, a wire mesh 4, a hopper 5, a filtering device 6 and a stirring device 7; the wire mesh 4 is arranged at In the desanding box 2, a support tube is provided on the inner side of the wire mesh 4 for supporting the wire mesh 4. The collecting hopper 5 is arranged below the wire mesh 4 for collecting the material filtered by the wire mesh 4. The motor 3 is arranged at the top of the desanding box 2. The filtering device 6 is arranged at the outlet below the collecting hopper 5. The stirring device 7 is arranged in the filtering device 6 and is connected to the motor 3 through the shaft tube 8. The distribution box 1 can evenly input the alumina material into each desanding box 2. The capacity of each desanding box in the large-flow alumina automatic sand cleaning and separation equipment to process alumina can reach 100 tons / hour, with high desanding efficiency, good desanding and filtering effect, thorough desanding, and little residual impurities.

[0038] The filtering device 6 includes an inner ring 61, a material dividing partition 62, a sintered plate 63 and a material containing cover 64, wherein the material dividing partition 62 is spaced around the inner ring 61, the sintered plate 63 is horizontally inserted into the material dividing partition 62, and the material containing cover 64 is sleeved on the outside of the material dividing partition 62. The material dividing partition 62 is evenly distributed and separated on the outside of the inner ring 61, and includes a horizontally placed partition and a vertically placed partition, wherein the horizontally placed partition has an arrow-shaped outline, is arranged below the sintered plate 63, and is connected between the inner ring 61 and the material containing cover 64, the vertically placed partition is perpendicular to the horizontal partition, and is connected to the outline edge of the horizontal partition, and the sintered plate 63 is inserted into the vertical partition and is parallel to the horizontal partition. Through such a setting, the fluidity of alumina can be effectively enhanced, impurities can be blocked, the precipitation of impurities can be facilitated, the filtering efficiency can be improved, and the sand removal effect can be better.

[0039] A wind chamber I9 is ​​provided below the filtering device 6, and ventilation holes 65 are provided around the material cover 64, and the ventilation holes 65 are connected to the ventilation pipe. The ventilation holes 65 are arranged between the sintering plate 63 and the horizontal partition plate, and air is supplied to the material cover 64 through the air supply pipe, so that the alumina can flow evenly and smoothly, thereby improving the sand removal and separation efficiency.

[0040] The inner side of the inner ring 61 is provided with a reinforcing rib 66. The reinforcing rib 66 is arranged on the inner ring 61 corresponding to the discharge port of the collecting hopper 5, which can not only block and separate a part of impurities, but also reinforce the inner ring.

[0041] The stirring device 7 includes a sand removal ring 71 and a paddle 72, and the paddle 72 is fixedly connected to the bottom of the sand removal ring 71. The sand removal ring 71 is a hollow structure, which is conducive to crushing aluminum oxide. The paddle 72 and the end fixed to the sand removal ring 71 have a certain arc, and there are two paddles 72, which is conducive to stirring impurities into the discharge pipe for discharge, and the processing efficiency is high. A discharge pipe 10 is provided below the stirring device 7, and an electric valve is provided on the discharge pipe 10.

[0042] A desanding cloth is laid at the bottom of the desanding box 2. The desanding cloth can filter out some impurities and enhance the desanding effect. The bottom of the desanding box 2 is connected to an air chamber 11, which is distributed around the filtering device 6 to facilitate the outflow of the filtered alumina.

[0043] The large-flow alumina automatic sand cleaning and separation equipment also includes a fully automatic plate-bound material removal device 12, which is arranged at the bottom of each desanding box 2 and connected to the feed pipe 10 of each desanding box 2. The fully automatic plate-bound material removal device 12 includes a screen box 13 and a drum screen 14. The drum screen 14 is arranged in the screen box 13, and the drum screen 14 is connected to the motor. The main shaft of the drum screen 14 is provided with a spiral blade I 15 on one end close to the feed port of the screen box 13, and a rolling cage 16 is sleeved on the other end. The inner side wall of the rolling cage 16 is provided with a spiral blade II 17, and a supporting rib is provided between the spiral blade II 17 and the main shaft. The side of the screen box 13 close to the bottom of the feed port is provided with The discharge port is connected with the chute Ⅰ20. The chute Ⅰ20 is provided with a dust collecting hood, and a wind chamber is provided at the bottom thereof. The end of the chute Ⅰ20 is provided with a chute Ⅰ20 discharge pipe; a discharge hopper 18 is provided below the outlet of the rolling cage 16, and the spiral blade Ⅰ15 can stably convey the alumina and effectively crush the compacted material. The rolling cage 16 can screen the impurity materials in the alumina, screen out the impurities and transport them to the discharge hopper 18 for discharge. The bottom of the screen box 13 is paved with a sand removal cloth, and the bottom of the sand removal cloth is provided with a wind chamber Ⅱ19. The dust-removed alumina is screened by the drum screen 14, and the compacted material in the alumina can be continuously removed without affecting the operation of the system, saving manpower and material resources.

[0044] The large-flow alumina automatic sand cleaning and separation equipment of this embodiment has the capacity to process alumina of up to 300 tons / hour, has high sand removal efficiency, high degree of automation, no manual intervention, good sand removal and filtration effect, thorough sand removal, less residual impurities, and more resource cost saving.

[0045] This embodiment also provides a separation method of a large-flow alumina automatic sand cleaning separation device, in which the separation device of this embodiment is used, and the following steps are included in order:

[0046] Step 1: Put the alumina into the distribution box 1, and the distribution box 1 distributes the alumina and then inputs it into three identical desanding boxes 2 through the chute at the same time;

[0047] Step 2: Alumina enters each desanding box 2 respectively, and is first filtered through a steel mesh 4. The filtered alumina falls into a collecting hopper 5, and the collecting hopper 5 collects the alumina into a filtering device 6 for further filtering;

[0048] Step 3: The alumina after the second filtration is sent into the air chamber 11 at the bottom of the desanding box 2 through the air supply of the wind chamber, and then discharged into the chute I 20;

[0049] Step 4: The stirring device 7 stirs the alumina containing impurities into the discharge pipe 10, and then discharges it into the fully automatic plate-bound material removal device 12; the fully automatic plate-bound material removal device 12 screens the alumina, and the screened clean alumina is discharged from the discharge port on the side of the screen box 13 into the chute I 20, and the screened impurities are discharged from the discharge hopper 18;

[0050] Step 5: The clean alumina in the three sand removal boxes 2 and the clean alumina in the three fully automatic agglomerate removal devices 12 are collected together into the chute Ⅰ20 and discharged.

[0051] This method can achieve two-stage filtration, first filtering out larger impurities through a wire mesh, and then performing overflow filtration through a filter device; at the same time, it can achieve two-stage sand removal, first removing sand by stirring with a stirring device, and then removing sand by a fully automatic plate-crushed material removal device. The sand removal and filtration effect is good, impurities are removed thoroughly, and more resource costs are saved.

[0052] It is not difficult for those skilled in the art to understand that the large-flow alumina automatic sand cleaning and separation equipment and separation method of the present invention include any combination of the invention content and specific implementation methods of the above-mentioned invention specification and the various parts shown in the drawings. Due to the limited space and to make the specification concise, the various schemes composed of these combinations are not described one by one. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A large-flow alumina automatic sand cleaning and separation equipment, comprising a material distribution box and three sand removal boxes, wherein the three sand removal boxes are evenly distributed around the material distribution box and are respectively connected to the material distribution box, characterized in that: The desanding box comprises a motor, a steel mesh, a collecting hopper, a filtering device and a stirring device; the steel mesh is arranged in the desanding box, the collecting hopper is arranged below the steel mesh, the motor is arranged on the top of the desanding box, the filtering device is arranged at the outlet below the collecting hopper, the stirring device is arranged in the filtering device and connected to the motor through a shaft tube; The filtering device comprises an inner ring, a material dividing partition, a sintered plate and a material containing cover, wherein the material dividing partition is spaced around the inner ring, the sintered plate is horizontally inserted into the material dividing partition, and the material containing cover is sleeved on the outside of the material dividing partition; the material dividing partition is evenly distributed and separated on the outside of the inner ring, and comprises a horizontally placed partition and a vertically placed partition, wherein the horizontally placed partition has an arrow-shaped outline, is arranged below the sintered plate, and is connected between the inner ring and the material containing cover, the vertically placed partition is perpendicular to the horizontal partition and is connected to the outline edge of the horizontal partition, and the sintered plate is inserted into the vertical partition and is parallel to the horizontal partition; A wind chamber I is provided below the filtering device; Ventilation holes are arranged around the material containing cover, and the ventilation holes are connected with the ventilation pipe; The inner side of the inner ring is provided with reinforcing ribs; The stirring device includes a sand removal ring and a paddle, and the paddle is fixedly connected to the bottom of the sand removal ring; the sand removal ring is a hollow structure, and the paddle is fixed to the end of the sand removal ring and has a certain arc. There are two paddles, and a feed pipe is provided below the stirring device, and an electric valve is provided on the feed pipe.

2. The large flow rate alumina automatic sand cleaning and separation equipment as claimed in claim 1 is characterized in that: The bottom of the desanding box is paved with a desanding press cloth.

3. The large flow rate alumina automatic sand cleaning and separation equipment as claimed in claim 1 is characterized in that: The bottom of the desanding box is connected to the air chamber.

4. A separation method for a large flow rate alumina automatic sand cleaning and separation device as claimed in any one of claims 1 to 3, comprising the following steps in chronological order: Step 1: Put alumina into the distribution box, and then the distribution box will be input into three identical desanding boxes through the chute at the same time after the distribution; Step 2: Alumina enters each sand removal box respectively, and is first filtered through a wire mesh. The filtered alumina falls into a collection hopper, which collects the alumina into a filter device for further filtration; Step 3: The alumina after the second filtration is sent to the air chamber at the bottom of the sand removal box by wind power, and then discharged into the chute I; Step 4: The stirring device stirs the alumina containing impurities into the discharge pipe, and then discharges it into the fully automatic plate-agglomerated material removal device; The fully automatic agglomerate removal device screens the alumina. The clean alumina screened out is discharged from the discharge port on the side of the screen box into the chute I, and the impurities screened out are discharged from the discharge hopper. Step 5: The clean alumina in the three sand removal boxes and the clean alumina in the three fully automatic agglomerate removal devices are collected together into chute I and discharged.

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