CN215741905U - Device for crystallizing sodium oxalate from sodium aluminate solution - Google Patents
Device for crystallizing sodium oxalate from sodium aluminate solution Download PDFInfo
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- CN215741905U CN215741905U CN202122049953.5U CN202122049953U CN215741905U CN 215741905 U CN215741905 U CN 215741905U CN 202122049953 U CN202122049953 U CN 202122049953U CN 215741905 U CN215741905 U CN 215741905U
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Abstract
The utility model discloses a device for crystallizing sodium oxalate from a sodium aluminate solution, which comprises a shell, a concentration cavity, a first stirring rod, a transmission shaft, a funnel, a first motor, a discharge valve, a collection cavity, a cleaning cover door, a crystallization cavity and a discharge valve, wherein the concentration cavity is arranged on the shell; according to the utility model, the sodium aluminate solution and the crystallizing agent are added into the concentration cavity through the funnel, then the first starting motor drives the first stirring rod to rotate through the transmission shaft, and the heating rod is electrified and heated at the same time, so that the heating, evaporation and concentration efficiency of the sodium aluminate solution is improved; the air extractor arranged in the utility model can extract the water vapor in the concentration cavity in time, thereby further improving the efficiency of evaporation concentration; the second motor arranged in the utility model can drive the screw rod to rotate so as to slowly convey the industrial liquid caustic soda or flake caustic soda into the concentrated solution to obtain suspension containing sodium oxalate and sodium carbonate crystals, thereby improving the treatment stability and uniformity.
Description
Technical Field
The utility model relates to the technical field of alumina production, in particular to a device for crystallizing sodium oxalate from a sodium aluminate solution.
Background
Sodium oxalate is a harmful impurity in alumina production, and when the concentration of sodium oxalate in a solution exceeds a critical concentration, a large amount of sodium oxalate is separated out in the decomposition process, so that the activity of decomposition crystal seeds is reduced, the decomposition rate is reduced, and the granularity of a decomposition product is refined; and simultaneously, the scabbing speed of the inner wall of the decomposer is rapidly accelerated, the seed crystal is difficult to filter, and the like. Common methods for removing sodium oxalate include solution combustion, adsorption, crystallization, and chemical precipitation. The solution combustion method has higher energy consumption and production and application cost; the adsorption method can only remove certain specific organic matters to reduce the critical concentration of the sodium oxalate, but has no removal effect on the sodium oxalate; chemical precipitation methods generally result in the loss of alumina and are therefore less useful. The crystallization method has the advantages of low energy consumption, less equipment investment and lower production and application cost, and particularly, sodium oxalate in the sodium aluminate solution is crystallized and separated out by evaporating and decomposing the mother liquor, and the method can fully utilize the energy in the evaporation process, thereby having great advantages; however, the sodium oxalate crystals precipitated in the evaporation process of the common decomposition mother liquor have fine particle size and are difficult to filter and separate; the equipment needed for crystallizing sodium oxalate out of the existing sodium aluminate solution is more, so that the operation is more troublesome and inconvenient, and in addition, the transportation of materials among different equipment is also more troublesome and inconvenient.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide the device for crystallizing sodium oxalate from the sodium aluminate solution, and solves the problems that the existing sodium aluminate solution requires more equipment for crystallizing sodium oxalate, so that the operation is troublesome and inconvenient, and the materials are also troublesome and inconvenient to transport among different equipment.
The technical scheme adopted by the utility model for realizing the purpose is as follows: the device for crystallizing and separating the sodium oxalate from the sodium aluminate solution has the innovation points that the device comprises a shell, a concentration cavity, a first stirring rod, a transmission shaft, a funnel, a first motor, an air extractor, a fixed rod, a heating rod, a feeding tank, a conveying hole, a spiral rod, a second motor, a second stirring rod, a filter screen, a through hole, a discharge valve, a collection cavity, a cleaning cover door, a crystallization cavity and a discharge valve; a concentration cavity is arranged inside the upper side of the shell, a crystallization cavity is arranged inside the center of the shell, a collection cavity is arranged inside the lower side of the shell, and a feeding groove is arranged inside the upper side of the center of the right side of the shell; the lower outlet of the funnel is connected with the upper left inlet of the concentration cavity; the upper side of the transmission shaft is movably connected to the center of the concentration cavity, and the lower side of the transmission shaft is movably connected to the center of the crystallization cavity; the first motor is fixedly connected to the center of the top of the shell, and a lower output shaft of the first motor is fixedly connected with the upper center of the transmission shaft; the stirring rods are uniformly and fixedly connected to the outer side of the upper side of the transmission shaft respectively; the stirring rods II are arranged in the crystallization cavity, and are respectively and uniformly fixedly connected to the outer part of the lower side of the transmission shaft; the inlet of the air pump is connected with the opening at the upper right side of the concentration cavity; the fixing rods are a plurality of fixing rods, the fixing rods are uniformly and fixedly connected to the inner wall of the concentration cavity respectively, and heating rods are uniformly and fixedly connected inside the fixing rods; the conveying hole is transversely arranged in the center of the right side of the shell, an inlet at the right upper side of the conveying hole is communicated with the right lower side of the feeding tank, and an outlet at the left side of the conveying hole is communicated with the upper side of the crystallization cavity; the second motor is fixedly connected to the outside of the center of the right side of the shell; the screw rod is movably connected inside the conveying hole, and the right shaft end of the screw rod is fixedly connected with the left output shaft of the motor II; the through holes are a plurality of, the through holes are respectively and uniformly arranged on the bottom surface of the crystallization cavity, the lower side openings of the through holes are all communicated with the inside of the collection cavity, and the upper side openings of the through holes are all fixedly connected with a filter screen; the left inlet of the discharge valve is connected with the right outlet of the collection cavity; the cleaning cover door is arranged at the opening at the left side of the crystallization cavity; the discharge valve is fixedly connected to the left upper side of the crystallization cavity, an inlet on the upper side of the discharge valve is communicated with the lower side of the concentration cavity, and an outlet on the lower side of the discharge valve is communicated with the inner part of the crystallization cavity.
Preferably, the first stirring rod and the fixed rod are arranged in a staggered manner.
Preferably, the bottom surface of the charging chute is an inclined surface with a higher left side and a lower right side.
Preferably, the first motor is a servo motor or a variable frequency motor.
Preferably, the cleaning cover door is a sealed cleaning cover door.
The utility model has the beneficial effects that:
(1) according to the utility model, the sodium aluminate solution and the crystallizing agent are added into the concentration cavity through the funnel, then the first starting motor drives the first stirring rod to rotate through the transmission shaft, and the heating rod is electrified and heated at the same time, so that the heating, evaporation and concentration efficiency of the sodium aluminate solution is improved.
(2) The air extractor arranged in the utility model can extract the water vapor in the concentration cavity in time, thereby further improving the efficiency of evaporation concentration.
(3) The second motor arranged in the utility model can drive the screw rod to rotate so as to slowly convey the industrial liquid caustic soda or flake caustic soda into the concentrated solution to obtain suspension containing sodium oxalate and sodium carbonate crystals, thereby improving the stability and uniformity of treatment.
(4) The cleaning cover door is arranged in the utility model, so that the sodium oxalate and sodium carbonate crystal mixture filtered in the crystallization cavity can be cleaned conveniently, and the treatment efficiency is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a partially enlarged view of the present invention.
In the figure: 1-a shell; 2-a concentration chamber; 3-a first stirring rod; 4-a transmission shaft; 5-a funnel; 6, a first motor; 7-an air extractor; 8-fixing the rod; 9-heating rod; 10-a feed tank; 11-a delivery orifice; 12-a screw rod; 13-motor two; 14-stirring rod II; 15-a filter screen; 16-a via hole; 17-a discharge valve; 18-a collection chamber; 19-cleaning the cover door; 20-a crystallization cavity; 21-discharge valve.
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.
As shown in fig. 1-2, a device for crystallizing sodium oxalate from a sodium aluminate solution comprises a shell 1, a concentration chamber 2, a first stirring rod 3, a transmission shaft 4, a funnel 5, a first motor 6, an air extractor 7, a fixed rod 8, a heating rod 9, a feeding tank 10, a conveying hole 11, a screw rod 12, a second motor 13, a second stirring rod 14, a filter screen 15, a through hole 16, a discharge valve 17, a collection chamber 18, a cleaning cover door 19, a crystallization chamber 20 and a discharge valve 21; a concentration cavity 2 is arranged inside the upper side of the shell 1, a crystallization cavity 20 is arranged inside the center of the shell 1, a collection cavity 18 is arranged inside the lower side of the shell 1, and a feeding groove 10 is arranged inside the upper side of the center of the right side of the shell 1; an outlet at the lower side of the funnel 5 is connected with an inlet at the upper left side of the concentration cavity 2; the upper side of the transmission shaft 4 is movably connected to the center of the concentration cavity 2, and the lower side of the transmission shaft 4 is movably connected to the center of the crystallization cavity 20; the motor I6 is fixedly connected to the center of the top of the shell 1, and an output shaft at the lower side of the motor I6 is fixedly connected with the center of the upper side of the transmission shaft 4; the stirring rods 3 are multiple, the stirring rods 3 are all positioned in the concentration cavity 2, and the stirring rods 3 are uniformly and fixedly connected to the outer side of the upper side of the transmission shaft 4 respectively; the stirring rods 14 are multiple, the stirring rods 14 are all located in the crystallization cavity 20, and the stirring rods 14 are uniformly and fixedly connected to the outer portion of the lower side of the transmission shaft 4 respectively; the inlet of the air pump 7 is connected with the opening at the upper right side of the concentration cavity 2; the number of the fixing rods 8 is a plurality, the fixing rods 8 are respectively and uniformly fixedly connected to the inner wall of the concentration cavity 2, and the heating rods 9 are uniformly and fixedly connected inside the fixing rods 8; the conveying hole 11 is transversely arranged in the center of the right side of the shell 1, an inlet at the right upper side of the conveying hole 11 is communicated with the right lower side of the feeding tank 10, and an outlet at the left side of the conveying hole 11 is communicated with the upper side of the crystallization cavity 20; the second motor 13 is fixedly connected to the outside of the center of the right side of the shell 1; the screw rod 12 is movably connected inside the conveying hole 11, and the right shaft end of the screw rod 12 is fixedly connected with the left output shaft of the motor II 13; the through holes 16 are a plurality of through holes 16, the through holes 16 are respectively and uniformly arranged on the bottom surface of the crystallization cavity 20, openings at the lower sides of the through holes 16 are communicated with the inside of the collection cavity 18, and openings at the upper sides of the through holes 16 are fixedly connected with the filter screen 15; the left inlet of the discharge valve 17 is connected with the right outlet of the collection cavity 18; the cleaning cover door 19 is arranged at the opening at the left side of the crystallization cavity 20; the discharge valve 21 is fixedly connected to the left upper side of the crystallization cavity 20, an inlet on the upper side of the discharge valve 21 is communicated with the lower side of the concentration cavity 2, and an outlet on the lower side of the discharge valve 21 is communicated with the interior of the crystallization cavity 20.
The first stirring rod 3 and the fixed rod 8 are arranged in a staggered manner, so that the stirring and mixing effects are improved; the bottom surface of the feeding tank 10 is an inclined surface with a higher left side and a lower right side, so that the feeding of materials is facilitated; the first motor 6 is a servo motor or a variable frequency motor; the cleaning cover door 19 is a sealed cleaning cover door.
The using state of the utility model is that when in use, firstly sodium aluminate solution and crystallizing agent are added into a concentration cavity 2 through a funnel 5, then a first motor 6 is started to drive a first stirring rod 3 to rotate through a transmission shaft 4, and simultaneously a heating rod 9 is electrified and heated, thereby improving the efficiency of heating, evaporating and concentrating the sodium aluminate solution, in addition, a gas extractor 7 is arranged, water vapor in the concentration cavity 2 can be extracted in time, thereby further improving the efficiency of evaporating and concentrating, a discharge valve 21 is started after the concentration is finished, thereby enabling the concentrated solution in the concentration cavity 2 to directly flow into a crystallization cavity 20 for crystallization treatment, and a second motor 13 is arranged, which can drive a spiral rod 12 to rotate, thereby industrial liquid alkali or flake alkali can be slowly conveyed into the concentrated solution to obtain suspension containing sodium oxalate and sodium carbonate crystals, and then a discharge valve 17 is opened to filter the solution in the crystallization cavity 20, the material at the filtering position is a crystallized mixture of sodium oxalate and sodium carbonate, and the cleaning cover door 19 is arranged, so that the crystallized mixture of sodium oxalate and sodium carbonate filtered in the crystallization cavity 20 can be cleaned conveniently, and the treatment efficiency is improved.
In the case of the control mode of the utility model, which is controlled by manual actuation or by means of existing automation techniques, the wiring diagram of the power elements and the provision of power are known in the art and the utility model is primarily intended to protect the mechanical means, so that the control mode and wiring arrangement are not explained in detail in the present invention.
In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.
While there have been shown and described what are at present considered to be the fundamental principles of the utility model and its essential features and advantages, it will be understood by those skilled in the art that the utility model is not limited by the embodiments described above, which are merely illustrative of the principles of the utility model, but that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims and their equivalents.
Claims (5)
1. A device for crystallizing sodium oxalate from a sodium aluminate solution is characterized by comprising a shell (1), a concentration cavity (2), a first stirring rod (3), a transmission shaft (4), a funnel (5), a first motor (6), an air pump (7), a fixing rod (8), a heating rod (9), a feeding tank (10), a conveying hole (11), a screw rod (12), a second motor (13), a second stirring rod (14), a filter screen (15), a through hole (16), a discharge valve (17), a collection cavity (18), a cleaning cover door (19), a crystallization cavity (20) and a discharge valve (21);
a concentration cavity (2) is arranged inside the upper side of the shell (1), a crystallization cavity (20) is arranged inside the center of the shell (1), a collection cavity (18) is arranged inside the lower side of the shell (1), and a feeding tank (10) is arranged inside the upper side of the center of the right side of the shell (1);
the lower outlet of the funnel (5) is connected with the upper left inlet of the concentration cavity (2);
the upper side of the transmission shaft (4) is movably connected to the center of the concentration cavity (2), and the lower side of the transmission shaft (4) is movably connected to the center of the crystallization cavity (20);
the first motor (6) is fixedly connected to the center of the top of the shell (1), and an output shaft at the lower side of the first motor (6) is fixedly connected with the center of the upper side of the transmission shaft (4);
the stirring rods (3) are multiple, the stirring rods (3) are all located in the concentration cavity (2), and the stirring rods (3) are uniformly and fixedly connected to the outer portion of the upper side of the transmission shaft (4) respectively;
the second stirring rods (14) are multiple, the second stirring rods (14) are all positioned in the crystallization cavity (20), and the second stirring rods (14) are respectively and uniformly and fixedly connected to the outer part of the lower side of the transmission shaft (4);
the inlet of the air pump (7) is connected with the opening at the upper right side of the concentration cavity (2);
the number of the fixing rods (8) is multiple, the fixing rods (8) are uniformly and fixedly connected to the inner wall of the concentration cavity (2) respectively, and heating rods (9) are uniformly and fixedly connected inside the fixing rods (8);
the conveying hole (11) is transversely arranged in the center of the right side of the shell (1), an inlet on the right upper side of the conveying hole (11) is communicated with the right lower side of the feeding tank (10), and an outlet on the left side of the conveying hole (11) is communicated with the upper side of the crystallization cavity (20);
the second motor (13) is fixedly connected to the outside of the center of the right side of the shell (1);
the screw rod (12) is movably connected inside the conveying hole (11), and the right shaft end of the screw rod (12) is fixedly connected with the left output shaft of the motor II (13);
the number of the through holes (16) is multiple, the through holes (16) are respectively and uniformly arranged on the bottom surface of the crystallization cavity (20), the lower openings of the through holes (16) are communicated with the interior of the collection cavity (18), and the upper openings of the through holes (16) are fixedly connected with a filter screen (15);
the left inlet of the discharge valve (17) is connected with the right outlet of the collection cavity (18);
the cleaning cover door (19) is arranged at the opening at the left side of the crystallization cavity (20);
the discharge valve (21) is fixedly connected to the left upper side of the crystallization cavity (20), an inlet on the upper side of the discharge valve (21) is communicated with the lower side of the concentration cavity (2), and an outlet on the lower side of the discharge valve (21) is communicated with the interior of the crystallization cavity (20).
2. The apparatus for crystallizing sodium oxalate from sodium aluminate solution according to claim 1, wherein said first stirring rod (3) and said fixing rod (8) are arranged in a staggered manner.
3. The apparatus for crystallizing sodium oxalate from sodium aluminate solution according to claim 1, wherein the bottom surface of the feed tank (10) is a slope having a height from the left to the right.
4. The apparatus for crystallizing sodium oxalate from sodium aluminate solution according to claim 1, wherein said motor one (6) is a servo motor or a variable frequency motor.
5. The apparatus for crystallizing sodium oxalate from sodium aluminate solution according to claim 1, wherein said cleaning cover door (19) is a sealed cleaning cover door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122049953.5U CN215741905U (en) | 2021-08-29 | 2021-08-29 | Device for crystallizing sodium oxalate from sodium aluminate solution |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122049953.5U CN215741905U (en) | 2021-08-29 | 2021-08-29 | Device for crystallizing sodium oxalate from sodium aluminate solution |
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| CN215741905U true CN215741905U (en) | 2022-02-08 |
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| CN202122049953.5U Active CN215741905U (en) | 2021-08-29 | 2021-08-29 | Device for crystallizing sodium oxalate from sodium aluminate solution |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115198112A (en) * | 2022-07-21 | 2022-10-18 | 江西金辉锂业有限公司 | Precipitation method is lithium equipment of carrying fast |
| CN115198113A (en) * | 2022-07-21 | 2022-10-18 | 江西金辉锂业有限公司 | Solar lithium extraction equipment |
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2021
- 2021-08-29 CN CN202122049953.5U patent/CN215741905U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115198112A (en) * | 2022-07-21 | 2022-10-18 | 江西金辉锂业有限公司 | Precipitation method is lithium equipment of carrying fast |
| CN115198113A (en) * | 2022-07-21 | 2022-10-18 | 江西金辉锂业有限公司 | Solar lithium extraction equipment |
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