Mother liquor purification device

Abstract

The invention discloses a mother liquor purification device in the technical field of gallium refining, and the mother liquor purification device comprises an adsorption tower, the adsorption tower is provided with a mother liquor injection pipeline and a mother liquor discharge pipeline, the mother liquor purification device further comprises a loading frame fixedly arranged in the adsorption tower, the loading frame comprises transverse plates which are symmetrically and fixedly arranged, and a plurality of liquid inlet holes are uniformly distributed in the transverse plates; longitudinal plates are symmetrically, longitudinally and slidably connected between the transverse plates on the two sides; the adsorption tower is fixedly provided with a motor, the movable end of the motor drives a disc, the disc is symmetrically and fixedly provided with pushing block sets along the central axis of the disc, each pushing block set comprises a plurality of pushing blocks which are arranged in the circumferential direction of the disc and connected with one another to form a step shape, and each longitudinal plate is fixedly connected with a pushing rod. The internal space of the loading frame is continuously increased, so that the resin flows under the washing of the mother liquor, and the suspended matters adsorbed between the resin are pulled apart and pulled down, so that the gaps between the resin are increased for the mother liquor to pass through, and the resistance of the mother liquor passing through the resin layer is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of gallium refining, and in particular to a mother liquor purification device. Background Art

[0002] Since the concentration of gallium in the earth's crust is very low, accounting for 0.0015% of the total, it is widely distributed, but it does not exist in a pure metallic state, but in the form of copper gallium sulfide (CuGaS2).

[0003] Gallium is a byproduct of the industrial processing of sphalerite, pyrite, bauxite, and germanium. Gallium is a rare element, mainly used in the semiconductor industry. Gallium is usually extracted from Bayer mother liquor. There are many ways to recover gallium from Bayer mother liquor, such as extraction, amalgam, electrolysis, and chemical enrichment. However, the extraction method is costly, requires a large amount of extractant, aluminum hydroxide, and alkali, and brings organic matter into the production process of alumina; the amalgam method has the disadvantages of large amounts of mercury and mercury pollution; the electrolysis method has the disadvantage of serious pollution; there are many chemical enrichment methods, but their operation is complicated or the gallium-aluminum separation effect is poor, and the recovery rate is not high.

[0004] Referring to CN114920875B, a method for preparing a chelate resin for adsorbing gallium is disclosed, wherein the gallium element in the mother liquor is adsorbed and purified by the chelate resin. During operation, the chelate resin particles are placed in an adsorption tower to adsorb the gallium in the mother liquor. However, since the gallium content in the mother liquor of the adsorption mother liquor is 150-180 mg / L, the concentration is relatively low, and the resin needs to pass a large amount of mother liquor to be saturated; and the viscosity of the adsorption mother liquor is relatively large (the viscosity is 3-4 centimeters), the resistance of the mother liquor passing through the resin layer is relatively large, the flow rate is relatively low, and the resin is not easy to be saturated; at the same time, the floating matter (solid small particles of aluminum hydroxide) in the mother liquor is high, which is very easy to block the mother liquor pipeline and device entering and exiting the adsorption tower, and at the same time, a large amount of floating matter is adsorbed in the resin layer, blocking the adsorption mother liquor from passing. Therefore, the above factors all restrict the purification efficiency of the mother liquor. Summary of the invention

[0005] The present invention is intended to provide a mother liquor purification device to solve the problem in the prior art that the resistance of the mother liquor passing through the resin layer is large, the flow rate is low, and the resin is not easy to be saturated.

[0006] In order to solve the above problems, the present invention provides the following technical solutions:

[0007] A mother liquor purification device comprises an adsorption tower, which is provided with a mother liquor injection pipe and a mother liquor discharge pipe, and also comprises a loading frame fixedly arranged in the adsorption tower, wherein the loading frame comprises symmetrically fixedly arranged transverse plates, wherein the transverse plates are evenly provided with a plurality of liquid inlet holes, and longitudinal plates are symmetrically and longitudinally slidably connected between the transverse plates on both sides; the adsorption tower is fixedly provided with a motor, and the movable end of the motor drives a disc, and the disc is symmetrically and fixedly provided with a pushing block group along its central axis, and each pushing block group comprises a plurality of pushing blocks arranged along the circumferential direction of the disc and connected to each other in a stepped shape, the pushing blocks comprise a reducing surface and an equal-diameter surface, and the adjacent plurality of pushing blocks are connected end to end in the circumferential direction, and the distance between the plurality of reducing surfaces of each pushing block group and the central axis of the disc gradually increases along the circumferential direction; each longitudinal plate is fixedly connected with a pushing rod alternately abutting against the plurality of pushing blocks of the corresponding pushing block group.

[0008] Working principle and beneficial effects of the present invention:

[0009] In this scheme, the mother liquor is introduced into the adsorption tower through the mother liquor injection pipe, the mother liquor flows through the charging frame through the liquid inlet hole, and then is discharged outward through the mother liquor discharge pipe, and the discharged mother liquor is repeatedly introduced into the adsorption tower for repeated purification.

[0010] The resin particles are put into the loading frame. The resin is located between the longitudinal plates on both sides. The density of the resin is less than that of the mother liquor, so that the resin floats in the loading frame. The resin absorbs gallium in the mother liquor. The floating matter in the mother liquor floats and absorbs between the resin particles, causing the gaps between the resin particles to become smaller, resulting in greater resistance for the mother liquor to pass through the resin layer and lower flow rate. Since the longitudinal plate is connected between the transverse plates on both sides by longitudinal sliding, the motor drives the disc to rotate at this time, and the disc drives the multiple push blocks of the push block group to rotate synchronously. The push block includes a variable diameter surface and a constant diameter surface, and the distance between the multiple variable diameter surfaces of each push block group and the central axis of the disc gradually increases along the circumferential direction. The variable diameter surface squeezes the corresponding push rod to push the longitudinal plate to slide, and the push rod transitions to the constant diameter surface of the push block to remain stable and motionless. Since the longitudinal plates on both sides slide in the direction of separation, the space inside the loading frame becomes larger, so that there is more space for the resin to float and move, and the resin layer flows under the flushing of the mother liquid, so that the gap between the resins becomes larger, and the floating objects between the adsorbed resins are pulled off and pulled down, thereby reducing the resistance of the mother liquid passing through the resin layer, and the mother liquid flow rate increases. After the mother liquid passes for a period of time, the floating objects float and adsorb between the resins again. At this time, the motor drives the disc to rotate, and the next push block of the push block group pushes the longitudinal plate to slide again through the corresponding push rod, which again makes the space between the longitudinal plates on both sides larger, and the resin layer flows under the flushing of the mother liquid.

[0011] Moreover, when the push rod transitions to the isodiametric surface of the push block and remains stable, the space inside the loading frame remains unchanged, so the space for the resin particles to float remains unchanged during this period of time, and the resin particles are redistributed after floating, which can prevent the gaps between the resin particles from maintaining an appropriate distance, thereby causing the gaps to be larger, and the contact time and contact area between the gallium in the mother liquor and the resin particles are insufficient, resulting in the resin being difficult to saturate.

[0012] This solution continuously increases the space inside the loading frame, thereby providing space for the resin to flow under the flushing of the mother liquid, breaking and tearing off the floating matter adsorbed between the resins, thereby increasing the gaps between the resins for the mother liquid to pass through, reducing the resistance of the mother liquid through the resin layer, and increasing the flow rate to solve the problem that the resin is not easily saturated.

[0013] Optimally, each push block group comprises 3 interconnected push blocks. Through the cooperation of the 3 push blocks and the push rod, the space inside the charging frame is increased 3 times.

[0014] Optimally, a spring is fixedly arranged between the longitudinal plate and the transverse plate. When the push block gradually separates from the push rod, the longitudinal plates on both sides move toward each other and close under the action of the spring.

[0015] Optimally, the motor is a servo motor. The servo motor is used to drive the disc to rotate, and the rotation angle is more accurate.

[0016] Optimally, the adsorption tower comprises a top cover, the motor and the top cover are fixedly connected, and the transverse plate and the adsorption tower are fixedly connected by bolts.

[0017] Preferably, the invention further comprises an injection pipe for injecting resin particles toward the charging frame.

[0018] Optimally, the curvature of the variable diameter surface of the push block is smaller than that of the equal diameter surface. When the push rod transitions to the equal diameter surface of the push block and remains stable, the space inside the loading frame remains unchanged, and the space for the resin particles to float during this period remains unchanged. After the resin particles float, they collide with the loading frame and are redistributed. This can prevent the gaps between the resin particles from being kept at an appropriate distance, thereby preventing the gaps from being larger, and the contact time and contact area between the gallium in the mother liquor and the resin particles are insufficient, resulting in the resin being difficult to saturate. At the same time, the curvature of the variable diameter surface of the push block is smaller than that of the equal diameter surface, so that the resin particles have sufficient time to redistribute after floating.

[0019] Optimally, the longitudinal plate is hinged with a plurality of swing plates, which swing up and down under the flushing of the mother liquid to stir the agglomerated resin particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Figure 1 This is a schematic diagram of the internal structure of a mother liquor purification device of the present invention;

[0021] Figure 2 for Figure 1 A top view of the

[0022] Figure 3 for Figure 2 Schematic diagram of the structure after the middle longitudinal plate is adjusted;

[0023] Figure 4 for Figure 2 Top view of the middle disk. DETAILED DESCRIPTION

[0024] The following is further described in detail through specific implementation methods:

[0025] The figure marks in the drawings of the specification include: mother liquid injection pipeline 1, adsorption tower 2, motor 3, longitudinal plate 4, transverse plate 5, mother liquid discharge pipeline 6, push rod 7, push block 8, disc 9, variable diameter section 10, and equal diameter section 11.

[0026] In the following statements, directional words such as "left", "right", "up", and "down" are all based on the directions shown in the diagram. In practice, if the corresponding structures are changed in the same direction based on the directions while keeping the relative positions unchanged, it will not affect the implementation of the plan.

[0027] Embodiment: A mother liquor purification device, such as Figure 1 As shown, the adsorption tower 2 includes a mother liquid injection pipe 1 and a mother liquid discharge pipe 6 fixedly disposed in the adsorption tower 2, and also includes a charging frame fixedly disposed in the adsorption tower 2, the charging frame includes a symmetrically fixed transverse plate 5, and the transverse plate 5 is evenly distributed with a plurality of liquid inlet holes, such as Figure 2 As shown, longitudinal plates 4 are symmetrically connected to the transverse plates 5 on both sides in a longitudinal sliding manner; a motor 3 is fixedly provided on the adsorption tower 2, and a disc 9 is driven at the movable end of the motor 3. The disc 9 is symmetrically fixed with a push block 8 group along its central axis, and each push block 8 group includes two push blocks 8 arranged along the circumferential direction of the disc 9 and connected to each other in a stepped shape. The push blocks 8 include a reducing surface and a constant diameter surface. Two adjacent push blocks 8 are connected end to end in the circumferential direction, and the distance between the two reducing surfaces of each push block 8 group and the central axis of the disc 9 gradually increases along the circumferential direction; each longitudinal plate 4 is fixedly connected with a push rod 7 that alternately abuts against the two push blocks 8 of the corresponding push block 8 group.

[0028] In this scheme, the mother liquor is introduced into the adsorption tower 2 through the mother liquor injection pipe 1, the mother liquor flows through the loading frame through the liquid inlet hole, and then is discharged outward through the mother liquor discharge pipe 6, and the discharged mother liquor is repeatedly introduced into the adsorption tower 2 for repeated purification.

[0029] like Figure 3 and Figure 4As shown, the resin is put into the loading frame and located between the longitudinal plates 4 on both sides. The density of the resin is less than that of the mother liquor, so that the resin floats in the loading frame, and the resin absorbs gallium in the mother liquor. The suspended matter in the mother liquor floats and is absorbed between the resins, causing the gaps between the resins to become smaller, resulting in greater resistance for the mother liquor to pass through the resin layer and lower flow rate. Since the longitudinal plate 4 is longitudinally slidably connected between the transverse plates 5 on both sides, the disc 9 is driven to rotate by the motor 3 at this time, and the disc 9 drives the two pushing blocks 8 of the pushing block group 8 to rotate synchronously. The pushing block 8 includes a variable diameter surface and a constant diameter surface, and the distance between the two variable diameter surfaces of each pushing block 8 group and the central axis of the disc 9 gradually increases along the circumferential direction. The variable diameter surface squeezes the corresponding pushing rod 7 to push the longitudinal plate 4 to slide, and the pushing rod 7 transitions to the constant diameter surface of the pushing block 8 to remain stable and motionless. Since the longitudinal plates 4 on both sides slide in the direction of separation, the space inside the loading frame becomes larger, so that there is more space for the resin to float and move, and the resin layer flows under the flushing of the mother liquid, thereby enlarging the gaps between the resins, and the floating objects between the adsorbed resins are pulled apart and pulled down, thereby reducing the resistance of the mother liquid through the resin layer and increasing the mother liquid flow rate. After the mother liquor has passed for a period of time, the floating matter floats and is adsorbed between the resins. At this time, the motor 3 drives the disc 9 to rotate, and the next pushing block 8 of the pushing block 8 group pushes the longitudinal plate 4 to slide through the corresponding pushing rod 7, thereby enlarging the space between the longitudinal plates 4 on both sides, and the resin layer flows under the flushing of the mother liquor.

[0030] This solution continuously increases the space inside the loading frame, thereby providing space for the resin to flow under the flushing of the mother liquid, breaking and tearing off the floating matter adsorbed between the resins, thereby increasing the gaps between the resins for the mother liquid to pass through, reducing the resistance of the mother liquid to pass through the resin layer, and increasing the flow rate to solve the problem of the resin being difficult to saturate.

[0031] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

Claims

1. A mother liquor purification device, comprising an adsorption tower, wherein the adsorption tower is provided with a mother liquor injection pipeline and a mother liquor discharge pipeline, characterized in that: It also includes a loading frame fixedly arranged in the adsorption tower, the loading frame includes symmetrically fixed transverse plates, the transverse plates are evenly distributed with a plurality of liquid inlet holes, and longitudinal plates are symmetrically connected to the transverse plates on both sides for longitudinal sliding connection; the adsorption tower is fixedly provided with a motor, the movable end of the motor drives a disc, the disc is symmetrically fixed with a pushing block group along its central axis, each pushing block group includes a plurality of pushing blocks arranged along the circumferential direction of the disc and connected to each other in a stepped shape, the pushing blocks include a reducing surface and a constant diameter surface, the adjacent plurality of pushing blocks are connected end to end in the circumferential direction, and the distance between the plurality of reducing surfaces of each pushing block group and the central axis of the disc gradually increases along the circumferential direction; each longitudinal plate is fixedly connected with a pushing rod that alternately abuts against the plurality of pushing blocks of the corresponding pushing block group.

2. A mother liquor purification device according to claim 1, characterized in that: Each pushing block group includes three mutually connected pushing blocks.

3. A mother liquor purification device according to claim 2, characterized in that: A spring is fixed between the longitudinal plate and the transverse plate.

4. A mother liquor purification device according to claim 3, characterized in that: The motor is a servo motor.

5. A mother liquor purification device according to claim 4, characterized in that: The adsorption tower comprises a top cover, the motor is fixedly connected to the top cover, and the transverse plate is fixedly connected to the adsorption tower by bolts.

6. A mother liquor purification device according to claim 5, characterized in that: The invention also includes an injection pipe for injecting resin particles toward the charging frame.

7. A mother liquor purification device according to claim 6, characterized in that: The radian of the variable diameter surface of the pushing block is smaller than the radian of the constant diameter surface.

8. A mother liquor purification device according to claim 7, characterized in that: The longitudinal plate is hinged with a plurality of swing plates.

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