CN115999697A - Recovery device and process sorting method for lepidolite associated tantalum-niobium-tin - Google Patents

Abstract

The invention discloses a recovery device of lepidolite associated tantalum niobium tin, and relates to the technical field of ore recovery. This recovery unit of lepidolite ore associated tantalum niobium tin, including support one and support two, the inboard fixed mounting of support one has the grinding case, the outside fixed mounting of grinding case has discharge tube one, the inner wall of discharge tube is provided with conveying assembly, conveying assembly carries the secondary to not totally kibbling lepidolite ore. This recovery unit of lepidolite ore accompaniment tantalum niobium tin mainly plays the effect of guide through setting up the guide bar, will lead the mineral aggregate that passes through inclined plane sieve screening and make the mineral aggregate discharge through discharge tube two, and wherein inclined plane baffle is mainly used for carrying the mineral aggregate that passes through inclined plane sieve screening and accords with the requirement to make it fall on the surface of material mechanism, carry, the mineral aggregate that does not pass can fall into the inner wall of discharge tube one, wait to carry and make it carry out the regrinding.

Description

Recovery device and process sorting method for lepidolite associated tantalum-niobium-tin

Technical Field

The invention relates to the technical field of ore recovery, in particular to a recovery device and a process sorting method for lepidolite associated tantalum niobium tin.

Background

With the rapid development of modern industry and high and new technology, the demand for tantalum-niobium-tin and products thereof is increasing, the tantalum-niobium-tin belongs to rare metals, mineral sources are relatively rare, and especially in recent years, the demand for tantalum-niobium-tin is vigorous, but tantalum-niobium-tin resources are very short, wherein lepidolite associated ores are rich in rare metals such as high-quality tantalum-niobium-tin, and thus, the recovery of tantalum-niobium-tin from lepidolite ores is a main acquisition means.

However, since lepidolite is in a flake structure and has soft texture and extremely difficult grinding, a large amount of tantalum-niobium-tin which is closely symbiotic with lepidolite cannot be recovered because of no sufficient dissociation, so that the recovery rate of tantalum-niobium-tin ore dressing is lower, and therefore, the recovery rate of tantalum-niobium-tin is very necessary to be improved.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the invention provides a recovery device and a process sorting method for lepidolite associated tantalum-niobium-tin, which solve the problems of low recovery efficiency of traditional tantalum-niobium-tin, low crushing efficiency of lepidolite associated ore and incapability of automatic screening.

(II) technical scheme

In order to achieve the above purpose, the invention is realized by the following technical scheme: the utility model provides a recovery unit of lepidolite ore associated tantalum niobium tin, includes support one and support two, the inboard fixed mounting of support one has the grinding and crushing case, the outside fixed mounting of grinding and crushing case has discharge tube one, the top fixed mounting of discharge tube one has the passage, the inner wall of passage is provided with conveying assembly, conveying assembly carries out secondary recovery to the lepidolite ore that does not fully smash mainly, grinding chamber has been seted up at the top of grinding and crushing case, the inside wall fixed mounting of grinding chamber has the swash plate, the bottom fixed mounting of grinding and crushing case has discharge tube two, the inner wall of grinding chamber is provided with crushing assembly, crushing assembly is mainly used to carry out preliminary crushing to lepidolite ore, the inner wall of grinding chamber is provided with screening assembly one, screening assembly is mainly used to carry out preliminary screening to the mineral aggregate that smashes;

the inside fixed mounting of support two has the collection box, collection box top fixed mounting has the brace table, the outside of brace table is provided with screening subassembly two, screening subassembly two is mainly used for carrying out the secondary screening to the kibbling mineral aggregate, and then obtains the ore grain that the granularity accords with the requirement.

Further, the conveying assembly comprises a blocking disc, a conveying auger, a feeding port and a storage cavity, the storage cavity is formed in the middle of the material guide pipe, the conveying auger is movably mounted on the inner wall of the storage cavity, the blocking disc is fixedly mounted on the outer side of the conveying auger, and the conveying auger is composed of a long rod and auger sheets.

Further, crushing subassembly includes drive shaft, crushing roller, crushing tooth, drive shaft movable mounting is at the inner wall in crushing chamber, crushing roller solid is installed in the outside of drive shaft, crushing tooth fixed mounting is in the outside of crushing roller, the external drive source of one end of drive shaft.

Further, the number of the crushing teeth is a plurality of groups and is circumferentially distributed on the outer side of the crushing roller, and the crushing teeth are triangular, wherein the crushing teeth are made of high-hardness steel.

Further, screening subassembly one includes guide bar, passes material mechanism, inclined plane sieve, inclined plane baffle, the inclined plane sieve sets up the inside wall in crushing chamber, inclined plane baffle fixed mounting is in the bottom of inclined plane sieve, pass material mechanism and set up the inside wall in crushing chamber, guide bar fixed mounting is in the one end of passing material mechanism.

Further, the material conveying mechanism mainly comprises a belt pulley, a conveying belt and a miniature driving motor, wherein the belt is sleeved on the outer side of the belt pulley, one end of the belt pulley is fixedly connected with the output end of the miniature motor, the rotation direction of the belt is clockwise, and the conveying belt is positioned below the inclined guide plate.

Further, two screening components include screening frame, filter screen, spacing groove, shaft hole, the outside surface at the brace table is seted up to the spacing groove, the outside surface at the brace table is seted up in the shaft hole, screening frame movable mounting is in the inboard of brace table, filter screen fixed mounting is at the inside wall of screening frame.

Further, two screening components include carousel, drive block, pendulum rod, transmission shaft movable mounting is in the inner wall in shaft hole, carousel fixed mounting is in the one end of transmission shaft, the outside of carousel can cup joint the belt, drives the carousel through the belt and rotates, carries out the transmission, drive block movable mounting is in the outer end of carousel, pendulum rod movable mounting is in the outside of drive block.

Further, the connecting column is fixedly arranged on the inner side of the swing rod, the sliding block is fixedly arranged at one end of the connecting column, the sliding block is movably connected with the inner wall of the limiting groove, the limiting strip-shaped protrusion is arranged on the inner side wall of the limiting groove, the sliding groove is arranged on the outer side of the sliding block, and the inner side end of the sliding block is fixedly connected with the outer side of the screening frame.

A process selection method of lepidolite associated tantalum niobium tin comprises the following steps:

s1: crushing and grinding, namely firstly, primarily crushing lepidolite ore containing tantalum, niobium and tin through a crusher, and then putting the lepidolite ore into a ball mill for grinding to obtain ore particles with the granularity of 1 mm;

s2: firing: on the basis of S1, placing crushed mineral aggregate particles into a high-temperature kiln chamber for firing, so that iron on the surfaces of tantalum, niobium and tin is oxidized;

s3: filtering and removing impurities: on the basis of S2, preparing the fired mixture into ore pulp, and then filtering and removing impurities through a vacuum filter;

s4: acid leaching oxidation, namely soaking the filtered mineral mud in an acid leaching device on the basis of S3, and dissolving iron oxide on the surface of the mineral;

s5: and (3) drying and sorting, namely drying the mineral aggregate after iron oxide treatment by using drying equipment on the basis of S4, then placing the dried mineral aggregate into a magnetic separation device, and then carrying out magnetic detection on the mineral aggregate to obtain the magnetic tantalum-niobium ore. Non-magnetic is tin ore.

(III) beneficial effects

The invention has the following beneficial effects:

1. through setting up the effect that the guide bar mainly played the guide, will lead the mineral aggregate that passes through inclined plane sieve screening and make the mineral aggregate pass through discharge tube two discharges, wherein inclined plane baffle mainly used carries the mineral aggregate that passes through inclined plane sieve screening and meet the requirements to make it fall on the surface of conveying mechanism, carry, the mineral aggregate that does not pass can fall into the inner wall of discharge tube one, wait to carry and make it carry out secondary crushing.

2. This recovery unit of lepidolite ore deposit associated tantalum niobium tin is mainly used for intercepting through setting up the interception dish to the crushed aggregates that is through discharge tube one discharge, wherein the feed inlet is parallel with the discharge gate that carries the auger, then drives the auger bottom and makes the inner wall that carries the auger along the storage chamber rotate, and then carries the crushed aggregates, makes its inner wall upward movement along the storage chamber to discharge the inner wall that smashes the chamber through the discharge port on the top of passage, improved crushing efficiency, and reduced the waste of resource.

3. This recovery unit of lepidolite ore accompanies tantalum niobium tin drives the transmission piece through setting up the carousel and rotates, and then drives the pendulum rod and carry out back-and-forth flexible motion to drive the screening frame back-and-forth swing, come to screen the mineral aggregate that falls on the filter screen surface, and collect the ore grain that accords with the requirement.

Of course, it is not necessary for any one product to practice the invention to achieve all of the advantages set forth above at the same time.

Drawings

FIG. 1 is a schematic perspective view of a lepidolite associated tantalum-niobium-tin recovery device of the invention;

FIG. 2 is a schematic view of the structure of the grinding and pulverizing box of the present invention;

FIG. 3 is a schematic diagram of a screening frame according to the present invention;

FIG. 4 is a schematic diagram of the swing link structure of the present invention;

FIG. 5 is a schematic cross-sectional view of the structure of the grinding and pulverizing box of the present invention;

FIG. 6 is a schematic view of the structure of the pulverizing roll of the present invention;

FIG. 7 is a schematic cross-sectional view of a material guiding pipe according to the present invention;

FIG. 8 is a schematic cross-sectional view showing the internal structure of the grinding and pulverizing box of the present invention.

In the figure, 1, a first bracket; 2. grinding and crushing box; 3. a first discharging pipe; 4. a material guiding pipe; 5. a sloping plate; 6. a crushing cavity; 7. a discharge pipe II; 8. a second bracket; 9. a support table; 10. a screening frame; 11. a material collecting box; 12. a filter screen; 13. a limit groove; 14. a shaft hole; 15. a turntable; 16. a transmission block; 17. swing rod; 18. a transmission shaft; 19. a drive shaft; 20. a pulverizing roller; 21. crushing teeth; 22. a interception tray; 23. conveying the auger; 24. a feed inlet; 25. a storage chamber; 26. a guide rod; 27. a material conveying mechanism; 28. inclined plane sieve plate; 29. and an inclined guide plate.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be understood that the terms "open," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like indicate orientation or positional relationships, merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

Referring to fig. 1-8, the embodiment of the invention provides a technical scheme: the utility model provides a recovery unit of lepidolite ore associated tantalum niobium tin, including support one 1 and support two 8, the inboard fixed mounting of support one has grinding and crushing case 2, the outside fixed mounting of grinding and crushing case 2 has discharge tube one 3, the top fixed mounting of discharge tube one 3 has passage 4, the inner wall of passage 4 is provided with conveying assembly, conveying assembly carries out secondary recovery to the lepidolite ore that does not fully smash mainly, crushing chamber 6 has been seted up at the top of grinding and crushing case 2, the inside wall fixed mounting of crushing chamber 6 has swash plate 5, the bottom fixed mounting of grinding and crushing case 2 has discharge tube two 7, the inner wall of crushing chamber 6 is provided with crushing assembly, crushing assembly is mainly used for carrying out preliminary crushing to lepidolite ore, the inner wall of crushing chamber 6 is provided with screening assembly one, screening assembly is mainly used for carrying out preliminary screening to the mineral aggregate that smashes;

the inside fixed mounting of support two 8 has collection box 11, and collection box 11 top fixed mounting has supporting bench 9, and the outside of supporting bench 9 is provided with screening subassembly two, and screening subassembly two is mainly used for carrying out the secondary screening to the crushed mineral aggregate, and then obtains the ore grain that the granularity accords with the requirement.

Specifically, the conveying assembly comprises a blocking disc 22, a conveying auger 23, a feeding port 24 and a storage cavity 25, wherein the storage cavity 25 is formed in the middle of the material guiding pipe 4, the conveying auger 23 is movably mounted on the inner wall of the storage cavity 25, the blocking disc 22 is fixedly mounted on the outer side of the conveying auger 23, and the conveying auger 23 is composed of a long rod and auger sheets.

In this embodiment, the interception disc 22 is mainly used for intercepting the crushed aggregates discharged from the first discharge pipe 3, wherein the feeding hole 24 is parallel to the discharging hole of the conveying auger 23, and then the bottom end of the conveying auger 23 is driven to rotate the conveying auger 23 along the inner wall of the storage cavity 25, so as to convey the crushed aggregates to move upwards along the inner wall of the storage cavity 25, and the crushed aggregates are discharged to the inner wall of the crushing cavity 6 through the discharging hole at the top end of the material guiding pipe 4 for re-crushing.

Specifically, the crushing assembly comprises a driving shaft 19, a crushing roller 20 and crushing teeth 21, wherein the driving shaft 19 is movably arranged on the inner wall of the crushing cavity 6, the crushing roller 20 is fixedly arranged on the outer side of the driving shaft 19, the crushing teeth 21 are fixedly arranged on the outer side of the crushing roller 20, and one end of the driving shaft 19 can be externally connected with a driving source.

In this embodiment, the lepidolite ore passing through the gap between the two sets of pulverizing rollers 20 is pulverized by driving the drive shaft 19, wherein the drive source is mainly a motor, which rotates the pulverizing rollers 20 and the pulverizing teeth 21 when the drive shaft 19 rotates.

Specifically, the number of the crushing teeth 21 is several groups and circumferentially distributed on the outer side of the crushing roller 20, and the crushing teeth 21 are triangular, wherein the crushing teeth are made of high-hardness steel.

In this embodiment, the crushing teeth 21 are mainly used to ensure that lepidolite ore is sufficiently crushed and is less likely to be damaged by using a steel material having high hard strength.

Specifically, screening assembly one includes guide bar 26, passes material mechanism 27, inclined plane sieve 28, inclined plane baffle 29, and inclined plane sieve 28 sets up the inside wall in crushing chamber 6, and inclined plane baffle 29 fixed mounting is in the bottom of inclined plane sieve 28, and material mechanism 27 sets up the inside wall in crushing chamber 6, and guide bar 26 fixed mounting is in the one end of material mechanism 27.

In this embodiment, the guiding rod 26 mainly plays a role of guiding the mineral aggregate screened by the inclined screen plate 28 and discharging the mineral aggregate through the discharge pipe two 7, wherein the inclined guide plate 29 is mainly used for conveying the mineral aggregate screened by the inclined screen plate 28 and meeting the requirement and making the mineral aggregate fall on the surface of the material conveying mechanism 27 for conveying.

Specifically, the material conveying mechanism 27 is mainly composed of a belt pulley, a conveying belt and a micro driving motor, wherein the belt is sleeved on the outer side of the belt pulley, one end of the belt pulley is fixedly connected with the output end of the micro motor, the rotation direction of the belt is clockwise, and the conveying belt is located below the inclined surface guide plate 29.

In this embodiment, the ore particles falling from the inclined guide 29 are mainly conveyed by providing the feed mechanism 27.

Specifically, the screening assembly II comprises a screening frame 10, a filter screen 12, a limiting groove 13 and a shaft hole 14, wherein the limiting groove 13 is formed in the outer side surface of the supporting table 9, the shaft hole 14 is formed in the outer side surface of the supporting table 9, the screening frame 10 is movably mounted on the inner side of the supporting table 9, and the filter screen 12 is fixedly mounted on the inner side wall of the screening frame 10.

In this embodiment, the screen frame 10 is mainly used for fixedly mounting the screen 12, wherein the aperture of the screen 12 is 1mm, and the limiting groove 13 is mainly used for mounting the transmission assembly.

Specifically, screening subassembly two includes carousel 15, drive block 16, pendulum rod 17, transmission shaft 18, and transmission shaft 18 movable mounting is in the inner wall of shaft hole 14, carousel 15 fixed mounting in the one end of transmission shaft 18, and the outside of carousel 15 can cup joint the belt, drives carousel 15 through the belt and rotates, carries out the transmission, and drive block 16 movable mounting is in the outer end of carousel 15, and pendulum rod 17 movable mounting is in the outside of drive block 16.

In this embodiment, the turntable 15 is provided to drive the transmission block 16 to rotate, so as to drive the swing rod 17 to perform a back-and-forth telescopic motion, thereby driving the screening frame 10 to swing back-and-forth, and screening the mineral aggregate falling on the surface of the filter screen 12.

Specifically, the connecting column is fixedly installed on the inner side of the swing rod 17, the sliding block is fixedly installed at one end of the connecting column, the sliding block is movably connected with the inner wall of the limiting groove 13, the limiting strip-shaped bulge is arranged on the inner side wall of the limiting groove 13, the sliding groove is arranged on the outer side of the sliding block, and the inner side end of the sliding block is fixedly connected with the outer side of the screening frame 10.

In this embodiment, connect screening frame 10 through the spliced pole, make pendulum rod 17 and screening frame 10 be connected as an organic wholely, the spout has been seted up to the outside of slider, spout and spacing bar protruding sliding connection, wherein the slider mainly is used for guaranteeing screening frame 10 wobbling stability.

A process selection method of lepidolite associated tantalum niobium tin comprises the following steps:

s1: crushing and grinding, namely firstly, primarily crushing lepidolite ore containing tantalum, niobium and tin through a crusher, and then putting the lepidolite ore into a ball mill for grinding to obtain ore particles with the granularity of 1 mm;

s2: firing: on the basis of S1, placing crushed mineral aggregate particles into a high-temperature kiln chamber for firing, so that iron on the surfaces of tantalum, niobium and tin is oxidized;

s3: filtering and removing impurities: on the basis of S2, preparing the fired mixture into ore pulp, and then filtering and removing impurities through a vacuum filter;

s4: acid leaching oxidation, namely soaking the filtered mineral mud in an acid leaching device on the basis of S3, and dissolving iron oxide on the surface of the mineral;

s5: and (3) drying and sorting, namely drying the mineral aggregate after iron oxide treatment by using drying equipment on the basis of S4, then placing the dried mineral aggregate into a magnetic separation device, and then carrying out magnetic detection on the mineral aggregate to obtain the magnetic tantalum-niobium ore. Non-magnetic is tin ore.

In use, firstly, the drive shaft 19 and the transmission shaft 18 are driven, wherein the drive source is mainly a motor, the crushing roller 20 and the crushing teeth 21 are driven to rotate when the drive shaft 19 rotates, wherein the lepidolite ore is thrown into the inner wall of the crushing cavity 6, when the lepidolite ore passes through two groups of mutually-intersected positions, the crushing teeth 21 crush and crush the lepidolite ore, crushed mineral aggregate falls on the surface of the inclined plane sieve plate 28, mineral aggregate smaller than the aperture of the inclined plane sieve plate 28 passes through the hole wall, non-passing mineral aggregate falls on the inner wall of the discharge pipe I3, mineral aggregate passing through the aperture falls on the surface of the inclined plane guide plate 29, wherein the surface of the inclined plane guide plate 29 is smooth, the mineral aggregate falls along the inclined plane guide plate 29 and then falls on the surface of the conveyor belt at the top of the conveying mechanism 27, the mineral aggregate on the surface of the conveyor belt is conveyed by driving the micro motor, and discharged to the second discharge pipe 7 through the guide rod 26, mineral aggregate falls on the top surface of the filter screen 12 through the outlet of the second discharge pipe 7, at this time, the transmission shaft 18 rotates under the action of the driving source to drive the turntable 15 to rotate, when the turntable 15 rotates for half-circle movement, the transmission block 16 pulls the swing rod 17 and the screening frame 10 to move backwards, when the turntable 15 rotates for the other half-circle movement, the transmission block 16 pulls the swing rod 17 and the screening frame 10 to move forwards, thereby realizing the periodic reciprocating movement of the filter screen 12, at this time, the mineral aggregate passing through the filtering holes on the surface of the filter screen 12 enters the material collecting box 11 to be stored, the mineral aggregate not passing through the surface of the filter screen 12 is collected by cleaning and poured into the crushing cavity 6 again to be crushed, the mineral aggregate passing through the crushing teeth 21 and not passing through the surface of the inclined screen 28 enters the inner wall of the first discharge pipe 3, the conveying auger 23 rotates along the inner wall of the storage cavity 25 under the drive of the motor, the mineral aggregate entering the inner wall of the storage cavity 25 through the feed inlet 24 moves upwards under the conveying of the conveying auger 23 and is discharged into the crushing cavity 6 through the pipe barrel outside the material guide pipe 4, so that the crushing roller 20 and the crushing teeth 21 extrude and crush the mineral aggregate secondarily, and the mineral aggregate meeting the granularity is obtained through the screening process.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.

Claims (10)

1. The utility model provides a recovery unit of lepidolite ore deposit associated tantalum niobium tin, includes support one (1) and support two (8), its characterized in that: the grinding and crushing device comprises a first bracket (1), wherein a first grinding and crushing box (2) is fixedly arranged on the inner side of the first bracket (1), a first discharge pipe (3) is fixedly arranged on the outer side of the first grinding and crushing box (2), a first guide pipe (4) is fixedly arranged on the top of the first discharge pipe (3), a conveying component is arranged on the inner wall of the first guide pipe (4), the conveying component is mainly used for conveying and secondarily recycling the lepidolite ore which is not completely crushed, a crushing cavity (6) is formed in the top of the first grinding and crushing box (2), an inclined plate (5) is fixedly arranged on the inner side wall of the crushing cavity (6), a second discharge pipe (7) is fixedly arranged at the bottom of the grinding and crushing box (2), a crushing component is arranged on the inner wall of the crushing cavity (6), and is mainly used for primarily crushing the lepidolite ore, and a screening component I is arranged on the inner wall of the crushing cavity (6) and is mainly used for primarily screening crushed mineral aggregates;

the inside fixed mounting of support two (8) has collection box (11), collection box (11) top fixed mounting has brace table (9), the outside of brace table (9) is provided with screening subassembly two, screening subassembly two is mainly used for carrying out the secondary screening to kibbling mineral aggregate, and then obtains the ore grain that the granularity accords with the requirement.

2. The lepidolite associated tantalum-niobium-tin recovery device according to claim 1, wherein: the conveying assembly comprises a blocking disc (22), a conveying auger (23), a feed inlet (24) and a storage cavity (25), wherein the storage cavity (25) is formed in the middle of the material guide pipe (4), the conveying auger (23) is movably mounted on the inner wall of the storage cavity (25), the blocking disc (22) is fixedly mounted on the outer side of the conveying auger (23), and the conveying auger (23) is composed of a long rod and auger sheets.

3. The lepidolite associated tantalum-niobium-tin recovery device according to claim 1, wherein: the crushing assembly comprises a driving shaft (19), a crushing roller (20) and crushing teeth (21), wherein the driving shaft (19) is movably arranged on the inner wall of the crushing cavity (6), the crushing roller (20) is fixedly arranged on the outer side of the driving shaft (19), the crushing teeth (21) are fixedly arranged on the outer side of the crushing roller (20), and one end of the driving shaft (19) can be externally connected with a driving source.

4. A lepidolite associated tantalum niobium tin recovery unit according to claim 3, wherein: the number of the crushing teeth (21) is a plurality of groups and the crushing teeth are circumferentially distributed on the outer side of the crushing roller (20), and the crushing teeth (21) are triangular, wherein the crushing teeth are made of high-hardness steel.

5. The lepidolite associated tantalum-niobium-tin recovery device according to claim 1, wherein: screening subassembly one includes guide bar (26), passes material mechanism (27), inclined plane sieve (28), inclined plane baffle (29), inclined plane sieve (28) set up the inside wall in crushing chamber (6), inclined plane baffle (29) fixed mounting is in the bottom of inclined plane sieve (28), pass material mechanism (27) and set up the inside wall in crushing chamber (6), guide bar (26) fixed mounting is in the one end of passing material mechanism (27).

6. The lepidolite associated tantalum-niobium-tin recovery device according to claim 5, wherein: the conveying mechanism (27) mainly comprises a belt pulley, a conveying belt and a miniature driving motor, wherein the belt is sleeved on the outer side of the belt pulley, one end of the belt pulley is fixedly connected with the output end of the miniature motor, the rotation direction of the belt is clockwise, and the conveying belt is positioned below the inclined guide plate (29).

7. The lepidolite associated tantalum-niobium-tin recovery device according to claim 1, wherein: the screening assembly II comprises a screening frame (10), a filter screen (12), a limiting groove (13) and a shaft hole (14), wherein the limiting groove (13) is formed in the outer side surface of the supporting table (9), the shaft hole (14) is formed in the outer side surface of the supporting table (9), the screening frame (10) is movably mounted on the inner side of the supporting table (9), and the filter screen (12) is fixedly mounted on the inner side wall of the screening frame (10).

8. The lepidolite associated tantalum-niobium-tin recovery device according to claim 7, wherein: the screening assembly comprises a rotary table (15), a transmission block (16), a swinging rod (17) and a transmission shaft (18), wherein the transmission shaft (18) is movably mounted on the inner wall of the shaft hole (14), the rotary table (15) is fixedly mounted at one end of the transmission shaft (18), a belt can be sleeved on the outer side of the rotary table (15), the rotary table (15) is driven to rotate through the belt to carry out transmission, the transmission block (16) is movably mounted at the outer end of the rotary table (15), and the swinging rod (17) is movably mounted on the outer side of the transmission block (16).

9. The lepidolite associated tantalum-niobium-tin recovery device of claim 8, wherein: the inner side of the swing rod (17) is fixedly provided with a connecting column, one end of the connecting column is fixedly provided with a sliding block, the sliding block is movably connected with the inner wall of the limit groove (13), the inner side wall of the limit groove (13) is provided with a limit bar-shaped bulge, the outer side of the sliding block is provided with a sliding groove, and the inner side end of the sliding block is fixedly connected with the outer side of the screening frame (10).

10. The process selection method of lepidolite associated tantalum-niobium-tin is characterized by comprising the following steps of:

s1: crushing and grinding, namely firstly, primarily crushing lepidolite ore containing tantalum, niobium and tin through a crusher, and then putting the lepidolite ore into a ball mill for grinding to obtain ore particles with the granularity of 1 mm;

s2: firing: on the basis of S1, placing crushed mineral aggregate particles into a high-temperature kiln chamber for firing, so that iron on the surfaces of tantalum, niobium and tin is oxidized;

s3: filtering and removing impurities: on the basis of S2, preparing the fired mixture into ore pulp, and then filtering and removing impurities through a vacuum filter;

s4: acid leaching oxidation, namely soaking the filtered mineral mud in an acid leaching device on the basis of S3, and dissolving iron oxide on the surface of the mineral;

s5: and (3) drying and sorting, namely drying the mineral aggregate after iron oxide treatment by using drying equipment on the basis of S4, then placing the dried mineral aggregate into a magnetic separation device, and then carrying out magnetic detection on the mineral aggregate to obtain the magnetic tantalum-niobium ore. Non-magnetic is tin ore.

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