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Production equipment and production process of 6N-grade high-purity tellurium

A technology of production equipment and production process, which is applied in the production field of high-purity tellurium, can solve the problems that cannot be realized, and the separation cannot be realized quickly and easily, so as to achieve the effects of increasing production capacity, realizing industrialized large-scale production, and extending operating time

Pending Publication Date: 2021-09-24
安徽铜冠产业技术研究院有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the high-purity tellurium of 6N grade is still unrealizable. The key is that the separation of heavy metal impurities and selenium with similar properties cannot be realized quickly and easily in industry.

Method used

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  • Production equipment and production process of 6N-grade high-purity tellurium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Step 1, breaking 4N refined tellurium into 1cm small pieces, and putting them into chemical furnace 11; step 2, heating furnace 11 to 480°C, melting refined tellurium into a melt; step 3, horizontal tubular heating furnace 14 Start to feed hydrogen, control the hydrogen flow rate at 3L / min, and raise the temperature to 700°C; step 4, wait until the hydrogen flow rate is stable at 3L / min, and maintain the temperature in the tube at 700°C; step 5, open the discharge valve 12 at the bottom of the material furnace 11 , put the melt into the high-purity quartz boat 15; Step 6, the heating cone 6 starts to heat up until the temperature of the temperature measuring hole at the rear end is stable at 400°C; Step 7 stops production, and after the temperature in the horizontal heating furnace 14 drops to room temperature, Take out the high-purity quartz boat 15 from the furnace, and change the high-purity quartz boat to restart production.

Embodiment 2

[0039] Step 1, breaking 4N refined tellurium into 1cm small pieces, and putting them into chemical furnace 11; step 2, heating furnace 11 to 480°C, melting refined tellurium into a melt; step 3, horizontal tubular heating furnace 14 Start to feed hydrogen, control the hydrogen flow rate at 4L / min, and raise the temperature to 750°C; step 4, wait until the hydrogen flow rate is stable at 4L / min, and maintain the temperature in the tube at 750°C; step 5, open the discharge valve 12 at the bottom of the furnace 11 , put the melt into the high-purity quartz boat 15; Step 6, the heating cone 6 starts to heat up until the temperature of the temperature measuring hole at the rear end is stable at 410°C; Step 7 stops production, and after the temperature in the horizontal heating furnace 14 drops to room temperature, Take out the high-purity quartz boat 15 from the furnace, and change the high-purity quartz boat to restart production.

Embodiment 3

[0041] Step 1, breaking 4N refined tellurium into 1cm small pieces, and putting them into chemical furnace 11; step 2, heating furnace 11 to 500°C, melting refined tellurium into a melt; step 3, horizontal tubular heating furnace 14 Start to feed hydrogen, control the hydrogen flow rate at 5L / min, and raise the temperature to 900°C; step 4, wait until the hydrogen flow rate is stable at 5L / min, and maintain the temperature in the tube at 900°C; step 5, open the discharge valve 12 at the bottom of the furnace 11 , put the melt into the high-purity quartz boat 15; Step 6, the heating cone 6 starts to heat up until the temperature of the temperature measuring hole at the rear end is stable at 420°C; Step 7 stops production, and after the temperature in the horizontal heating furnace 14 drops to room temperature, Take out the high-purity quartz boat 15 from the furnace, and change the high-purity quartz boat to restart production.

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Abstract

The invention discloses production equipment of 6N-grade high-purity tellurium. The production equipment comprises a material melting furnace, a heating furnace and a collecting furnace, wherein the material melting furnace is located above the heating furnace and connected with the heating furnace through a discharging pipe. The heating furnace is connected with the collecting furnace through a pipeline, the pipeline is provided with an air inlet at the heating furnace side and is provided with an air outlet at the collecting furnace side; a high-purity quartz boat is arranged in the heating furnace; a heating cone and a heat preservation area are arranged in the collecting furnace, and a crucible is arranged under the heat preservation area; and most of the cone body of the heating cone and the pipeline are located on the same horizontal plane, and cone top is lower than the horizontal plane where the pipeline is located. According to the production equipment of 6N-grade high-purity tellurium, efficient purification of tellurium can be effectively realized, meanwhile, continuous feeding and continuous production are realized, and industrial large-scale production is realized. The equipment is small in investment and convenient to control, the purpose of continuous production is achieved, the operation time of a single furnace is prolonged, and the productivity is improved.

Description

technical field [0001] The invention relates to the production field of high-purity tellurium, in particular to a 6N-level high-purity tellurium production equipment and a production process for producing high-purity tellurium using the equipment. Background technique [0002] The most remarkable property of high-purity tellurium is that the binary, ternary, and quaternary alloys made of it have good photoelectric performance and thermoelectric conversion performance, and can be used as an alloy component of thermoelectric materials. Therefore, it is often used in the manufacture of solar cells, light-emitting diodes, and radiation detectors. For example, CdTe, HgCdTe, PbTe, and BiTe are the main materials for the production of solar cells, infrared measurement materials, electro-optic modulators, ray detection materials, and refrigeration materials. Even a small amount of impurities can lead to poor electrical properties of the material. The purity of tellurium is an impor...

Claims

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Application Information

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IPC IPC(8): C01B19/02
CPCC01B19/02
Inventor 俞鹰蔡晨龙潘荣选钱俊杰方支灵戴超申其新
Owner 安徽铜冠产业技术研究院有限责任公司
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