Distillation device for purifying metalloid tellurium

Abstract

The utility model discloses a distillation device for purifying metalloid tellurium, which comprises a distillation furnace and a pulverizator, a condenser is arranged at the upper part of the distillation furnace, a heating cavity for placing tellurium slag is arranged at the bottom of the distillation furnace, the top of the distillation furnace is communicated with a vacuum pump, a feed port and a heating device are arranged in the heating cavity, the feed port is communicated with a discharge port of the pulverizator, and the heating device is communicated with the discharge port of the pulverizator. The crusher comprises a spiral blade, a conical shaft, a conveying pipeline, a hopper, a sealing cover and a motor, the bottom of the hopper is communicated with the first end of the spiral conveyor, the second end of the conveying pipeline is provided with a discharging port, the conical shaft is arranged in the conveying pipeline, the large-diameter end of the conical shaft is located at the second end of the conveying pipeline, and the spiral blade is fixed to the conical shaft; a plurality of grinding protrusions are arranged on the inner wall of the conveying pipeline, the conical shaft is connected with a motor, and a sealing cover is arranged on an opening in the upper portion of the hopper. The utility model provides a distillation device for purifying metalloid tellurium, which can crush tellurium slag and prevent dust generated during crushing from polluting the environment.

Description

Technical Field

[0001] The utility model relates to the technical field of metalloid tellurium purification, in particular to a distillation device for purifying metalloid tellurium. Background Art

[0002] Tellurium slag is a complex alkaline compound that is hard and brittle, with an off-white or bluish-white appearance and strong water absorption. The tellurium slag is placed in a vacuum distillation device and adjusted to the appropriate distillation pressure and temperature for distillation separation, which can separate the semi-metal tellurium from other impurities. For example, copper tellurium slag is placed in a vacuum distillation furnace and vacuum distilled for 3 hours at a vacuum degree of 30-50Pa and a temperature of 930°C to produce refined tellurium products and copper-silver slag. Crushing the tellurium slag before distillation and purification can make the tellurium slag heat faster, thereby improving the efficiency of distillation and purification. However, since the tellurium slag is hard and brittle, too much debris or dust is generated during the crushing process, which affects the environment. Utility Model Content

[0003] In view of the above-mentioned prior art, the utility model provides a distillation device for purifying semi-metallic tellurium, which can pulverize tellurium slag and then distill and purify it, thereby preventing dust pollution to the environment during pulverization.

[0004] To achieve the above purpose, the technical solution of the embodiment of the utility model is implemented as follows:

[0005] A distillation device for purifying semimetallic tellurium comprises a distillation furnace and a pulverizer, wherein a condenser is provided at the upper portion of the distillation furnace, and a heating chamber for placing tellurium slag is provided at the bottom, the top of the distillation furnace is connected to a vacuum pump, a feed port and a heating device are provided in the heating chamber, the feed port is connected to a discharge port of the pulverizer, the pulverizer comprises a spiral blade, a conical shaft, a conveying pipe, a hopper, a sealing cover and a motor, the bottom of the hopper is connected to the first end of the screw conveyor, the discharge port is provided at the second end of the conveying pipe, the conical shaft is provided in the conveying pipe, and the end of the conical shaft with a larger diameter is located at the second end of the conveying pipe, the spiral blade is fixed on the conical shaft, the inner wall of the conveying pipe is provided with a plurality of grinding protrusions, the conical shaft is connected to the motor, and the upper opening of the hopper is provided with the sealing cover.

[0006] Furthermore, the condenser includes a condensation plate, a condensation tube and a discharge pipe. The condensation tube is connected to the condensation plate. The condensation tube is connected to an external refrigerant supply device. The discharge hole is provided at the bottom of the condensation plate. One end of the discharge pipe is aligned with the discharge hole located at the bottom, and the other end extends out of the distillation furnace and is connected to a storage tank.

[0007] Furthermore, the pulverizer also includes a sealing cover, which is connected to the conveying pipeline and covers the motor.

[0008] Furthermore, the hopper includes a cylindrical portion and a conical portion, the cylindrical portion is connected to the top of the conical portion, the discharge port is provided at the bottom of the conical portion, and the sealing cover is threadedly connected to the upper end of the cylindrical portion.

[0009] Furthermore, the sealing cover is provided with a sealing ring; when the sealing cover is screwed onto the cylindrical portion, the sealing ring is located between the end of the cylindrical portion and the sealing cover.

[0010] Furthermore, the heating device includes a mounting frame and a plurality of silicon carbon rods, the silicon carbon rods are fixed on the mounting frame, and the silicon carbon rods are connected to a power source.

[0011] Furthermore, the bottom of the heating chamber is connected to a slag discharge pipe.

[0012] The beneficial effect of the utility model is that when the tellurium slag moves to the second end, the inner wall of the conveying pipe is provided with a plurality of grinding protrusions, and the tellurium slag is squeezed and ground, so that the tellurium slag is ground step by step and finally forms fine particles. After the tellurium slag enters the heating chamber, it can be heated faster, thereby improving the efficiency of distillation and purification. During the grinding process, the tellurium slag is located in the conveying pipe, and the more crushed the tellurium slag particles are, the farther away from the hopper, and the dust generated during the grinding process is covered in the conveying pipe, thereby preventing the dust generated by the grinding from affecting the environment. The utility model is suitable for hard and brittle tellurium slag to avoid excessive dust during the crushing process. After the crushed tellurium slag enters the heating furnace, it can be heated and distilled faster, thereby improving the efficiency of distillation and purification. When a negative pressure is formed in the distillation furnace, if the air tightness of the hopper is insufficient and causes external gas to enter, since it needs to pass through the gap between the tellurium slag spiral blade and the conveying pipe, it also plays a certain auxiliary role in the air tightness of the distillation furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic structural diagram of a distillation device for purifying semi-metallic tellurium in an embodiment of the present application;

[0014] Figure 2 This is a schematic diagram of the structure of the pulverizer in the embodiment of the present application;

[0015] Description of Figure Numbers:

[0016] 1 distillation furnace, 2 pulverizer, 3 condenser, 4 heating chamber, 5 vacuum pump, 6 heating device, 7 spiral blade, 8 conical shaft, 9 conveying pipeline, 10 hopper, 11 sealing cover, 12 motor, 13 grinding protrusion, 15 condensation plate, 16 condensation pipe, 17 discharge hole, 18 discharge pipe, 19 storage tank, 20 sealing cover, 21 columnar part, 22 conical part, 23 sealing ring, 24 mounting frame, 25 silicon carbon rod, 26 slag discharge pipe. DETAILED DESCRIPTION

[0017] The technical solution of the utility model is further elaborated in detail below in conjunction with the drawings and specific embodiments of the specification. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of the utility model. The terms used herein in the specification of the utility model are only for the purpose of describing specific embodiments and are not intended to limit the utility model. In the following description, the expression "some embodiments" is involved, which describes a subset of all possible embodiments, but it should be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments, and can be combined with each other without conflict.

[0018] It should also be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "inside", "outside", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0019] Example 1

[0020] Please refer to the attached Figures 1-2The present application provides a distillation device for purifying semi-metallic tellurium, comprising a distillation furnace 1 and a pulverizer 2, wherein a condenser 3 is provided at the upper portion of the distillation furnace 1, and a heating chamber 4 for placing tellurium slag is provided at the bottom, the top of the distillation furnace 1 is connected to a vacuum pump 5, a feed port and a heating device 6 are provided in the heating chamber 4, the feed port is connected to the discharge port of the pulverizer 2, the pulverizer 2 comprises a spiral blade 7, a conical shaft 8, a conveying pipe 9, a hopper 10, a sealing cover 11 and a motor 12, the bottom of the hopper 10 is connected to the first end of the screw conveyor, the discharge port is provided at the second end of the conveying pipe 9, the conical shaft 8 is provided in the conveying pipe 9, and the end of the conical shaft 8 with a larger diameter is located at the second end of the conveying pipe 9, the spiral blade 7 is fixed on the conical shaft 8, a plurality of grinding protrusions 13 are provided on the inner wall of the conveying pipe 9, the conical shaft 8 is connected to the motor 12, and the upper opening of the hopper 10 is provided with the sealing cover 11. Put the tellurium slag into the hopper 10, and then cover the hopper 10 with a sealing cover 11. The tellurium slag is discharged from the bottom of the hopper 10 into the conveying pipe 9, and moves to the second end under the push of the spiral blade 7. The spiral blade 7 is fixed on the conical shaft 8, and the motor 12 is connected to the conical shaft 8, so when the motor 12 rotates, it can drive the spiral blade 7 to rotate, thereby pushing the tellurium slag to move. The end with a large diameter of the conical shaft 8 is located at the second end of the conveying pipe 9, and the gap between the conical shaft 8 and the conveying pipe 9 gradually decreases from the first end to the second end. When the tellurium slag moves to the second end, the inner wall of the conveying pipe 9 is provided with a plurality of grinding protrusions 13, and the tellurium slag is squeezed and ground, so that the tellurium slag is ground step by step and finally forms fine particles. After the tellurium slag enters the heating chamber 4, it can be heated faster, thereby improving the distillation purification efficiency. During the grinding process, the tellurium slag is located in the conveying pipe 9, and the more pulverized the tellurium slag is, the farther it is from the hopper 10. The dust generated during the grinding process is covered in the conveying pipe 9, so as to prevent the dust generated by the grinding from affecting the environment. The tellurium slag entering the heating chamber 4 is heated by the heating device 6, and finally the vapor formed by evaporation moves to the upper part of the distillation furnace 1. The vapor contacts the condenser 3 in the distillation furnace 1, and obtains metalloid tellurium with higher purity after distillation and purification. The top of the distillation furnace 1 is connected to the vacuum pump 5 for adjusting the pressure in the distillation furnace 1 to ensure that the pressure in the distillation furnace 1 is within an appropriate range. The utility model is suitable for tellurium slag that is hard and brittle to avoid excessive dust during the pulverization process. The pulverized tellurium slag can be heated and distilled faster when entering the heating furnace, thereby improving the distillation and purification efficiency. When a negative pressure is formed in the distillation furnace 1, if the air tightness of the hopper 10 is insufficient and external gas enters, it also plays a certain auxiliary role in the air tightness of the distillation furnace 1 because it needs to pass through the gap between the tellurium slag spiral blade 7 and the conveying pipe.

[0021] Specifically, the condenser 3 includes a condensation plate 15, a condensation pipe 16 and a discharge pipe 18. The condensation pipe 16 is connected to the condensation plate 15 and is connected to an external refrigerant supply device. The external refrigerant supply device supplies low-temperature refrigerant into the condensation pipe 16. The condensation pipe 16 can form a circulating loop with the external refrigerant supply device. The condensation pipe 16 cools the condensation plate 15. A discharge hole 17 is provided at the bottom of the condensation plate 15. The condensate formed by the cooling of the steam after contacting the condensation plate 15 flows to the discharge pipe 18. One end of the discharge pipe 18 is aligned with the discharge hole 17 located at the bottom, and the other end extends out of the distillation furnace 1 and is connected to the storage tank 19, and finally discharged into the storage tank 19.

[0022] Specifically, the heating device 6 includes a mounting frame 24 and a plurality of silicon carbon rods 25. The silicon carbon rods 25 are fixed on the mounting frame 24. The silicon carbon rods 25 are connected to an external power source. Power is supplied to the silicon carbon rods 25 through the external power source. The energized silicon carbon rods 25 generate high-temperature heat to heat the tellurium slag.

[0023] Specifically, the bottom of the heating chamber 4 is connected to a slag discharge pipe 26 , and the waste slag after distillation and purification is discharged from the slag discharge pipe 26 .

[0024] Example 2

[0025] Please refer to the attached Figures 1-2 The difference between this embodiment and embodiment 1 is that the pulverizer 2 further includes a sealing cover 20, which is connected to the delivery pipeline 9 and covers the motor 12. A closed cavity is formed between the sealing cover 20 and the delivery pipeline 9, and the motor 12 is arranged in the closed cavity, which can prevent leakage from the gap between the gas delivery pipeline 9 and the output shaft of the motor 12, and maintain the negative pressure environment in the distillation furnace 1 stable.

[0026] Specifically, the hopper 10 includes a cylindrical portion 21 and a conical portion 22. The cylindrical portion 21 is connected to the top of the conical portion 22. The bottom of the conical portion 22 is provided with the discharge port. The sealing cover 11 is threadedly connected to the upper end of the cylindrical portion 21. Tellurium slag is put into the cylindrical portion 21, and the conical portion 22 facilitates the downward discharge of the tellurium slag. The sealing cover 11 is screwed on the top of the cylindrical portion 21 by threads, so that the feed hopper 10 is firmly sealed to ensure the negative pressure in the distillation furnace 1 is stable.

[0027] Specifically, the sealing cover 11 is provided with a sealing ring 23; when the sealing cover 11 is screwed onto the cylindrical portion 21, the sealing ring 23 is located between the end of the cylindrical portion 21 and the sealing cover 11. The sealing ring 23 is used to improve the sealing performance between the sealing cover 11 and the cylindrical portion 21.

[0028] The above are only specific implementations of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. The protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A distillation apparatus for purifying metalloid tellurium, characterized in that: It includes a distillation furnace and a pulverizer. A condenser is provided on the upper part of the distillation furnace, and a heating chamber for placing tellurium slag is provided at the bottom. The top of the distillation furnace is connected to a vacuum pump. A feed port and a heating device are provided in the heating chamber. The feed port is connected to the discharge port of the pulverizer. The pulverizer includes spiral blades, a conical shaft, a conveying pipe, a hopper, a sealing cover and a motor. The bottom of the hopper is connected to the first end of the conveying pipe, and the discharge port is provided at the second end of the conveying pipe. The conical shaft is provided in the conveying pipe, and the end of the conical shaft with a larger diameter is located at the second end of the conveying pipe. The spiral blade is fixed on the conical shaft. A plurality of grinding protrusions are provided on the inner wall of the conveying pipe. The conical shaft is connected to the motor, and the sealing cover is provided at the upper opening of the hopper.

2. A distillation device for purifying metalloid tellurium according to claim 1, characterized in that: The condenser includes a condensation plate, a condensation tube and a discharge pipe. The condensation tube is connected to the condensation plate. The condensation tube is connected to an external refrigerant supply device. A discharge hole is provided at the bottom of the condensation plate. One end of the discharge pipe is aligned with the discharge hole located at the bottom, and the other end extends out of the distillation furnace and is connected to a storage tank.

3. A distillation device for purifying metalloid tellurium according to claim 1, characterized in that: The pulverizer further comprises a sealing cover, which is connected to the conveying pipeline and covers the motor.

4. A distillation device for purifying metalloid tellurium according to claim 1, characterized in that: The hopper comprises a cylindrical portion and a conical portion, the cylindrical portion is connected to the top of the conical portion, the bottom of the conical portion is provided with the discharge port, and the sealing cover is threadedly connected to the upper end of the cylindrical portion.

5. A distillation device for purifying metalloid tellurium according to claim 4, characterized in that: The sealing cover is provided with a sealing ring; when the sealing cover is screwed onto the cylindrical portion, the sealing ring is located between the end of the cylindrical portion and the sealing cover.

6. A distillation device for purifying metalloid tellurium according to claim 1, characterized in that: The heating device comprises a mounting frame and a plurality of silicon carbon rods, wherein the silicon carbon rods are fixed on the mounting frame and connected to a power source.

7. A distillation device for purifying metalloid tellurium according to claim 1, characterized in that: The bottom of the heating chamber is connected to the slag discharge pipe.

Images