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Method for preparing lithium deuteride by using high-temperature direct manner

A lithium deuterium, direct method technology, applied in the intersection of material science and nuclear technology, can solve the problems of many lithium deuterium defects, small deuterium/lithium atomic ratio, insufficient deuterium absorption, etc., and achieves good product stability and preparation. The effect of simple and easy-to-buy installation

Active Publication Date: 2014-12-03
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems that the lithium deuteride prepared by the existing method has many defects, the deuterium / lithium atomic ratio is too small, and the amount of deuterium absorbed is insufficient, and provides a method for preparing lithium deuteride by a high-temperature direct method

Method used

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  • Method for preparing lithium deuteride by using high-temperature direct manner

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Experimental program
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Effect test

Embodiment 1

[0022] Under the protection of argon, cut the lithium block with a purity of 99.99% into small pieces with a particle size of 5mm, weigh 308g and place it in an open quartz tank, place the quartz tank in a glass tube made of quartz, and place the quartz tube in Heating the furnace cabin at high temperature and closing the furnace cabin quickly (such as figure 1 Shown); Pass in argon gas to replace the gas in the cabin, pump the pressure in the cabin to a negative pressure of 0.021MPa, pass in 99.999% high-purity deuterium gas, pump it again to a vacuum of 0.014MPa, and repeat the operation 2 times; Maintain the above-mentioned vacuum degree, and rapidly raise the temperature to 175°C at a heating rate of 15°C / min; then pass deuterium gas at a flow rate of 5441ml / min, and react for 30 minutes; continue to raise the temperature at a heating rate of 5°C / min over 6 minutes To 195°C, react for 50 minutes; control the deuterium flow rate unchanged, and raise the temperature in the f...

Embodiment 2

[0024] Under the protection of argon, cut the lithium block with a purity of 99.99% into small pieces with a particle size of 10mm, weigh 703g and place it in an open quartz tank, place the quartz tank in a glass tube made of quartz, and place the quartz tube in Heating the furnace cabin at high temperature and closing the furnace cabin quickly (such as figure 1 Shown); Pass in argon gas to replace the gas in the cabin, pump the pressure in the cabin to a negative pressure of 0.020MPa, pass in 99.999% high-purity deuterium gas, and pump again to a vacuum of 0.015MPa, repeat the operation 3 times; Maintain the above-mentioned vacuum degree and quickly raise the temperature to 167°C at a heating rate of 10°C / min; then pass deuterium gas at a flow rate of 11279ml / min for 42 minutes; After 21 minutes, the temperature was raised to 216°C, and the reaction was carried out for 50 minutes; the deuterium flow rate was kept constant, and the temperature in the furnace cabin was raised t...

Embodiment 3

[0026] Under the protection of argon, cut a lithium block with a purity of 99.99% into small pieces with a particle size of 2mm, weigh 1253g and place it in an open quartz tank, place the quartz tank in a glass tube made of quartz, and place the quartz tube in Heating the furnace cabin at high temperature and closing the furnace cabin quickly; introducing argon gas to replace the gas in the cabin, pumping the cabin pressure to a negative pressure of 0.018MPa, feeding 99.999% high-purity deuterium gas, and pumping again to a vacuum degree of 0.013MPa, repeat the operation 3 times; maintain the above vacuum degree, raise the temperature to 161°C at a heating rate of 20°C / min; After 4 minutes at a heating rate of 10°C / min, the temperature was raised to 185°C, and then reacted for 70 minutes; the deuterium flow rate was kept constant, and the temperature in the furnace cabin was raised to 574°C at a speed of 15°C / min for 35 minutes, and then the temperature was stopped. Constant t...

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Abstract

The invention relates to a method for preparing lithium deuteride by using a high-temperature direct manner and belongs to the crossing field of material sciences and nuclear technology. According to the method for preparing lithium deuteride by using the high-temperature direct manner, lithium metal reacts with deuterium gas at high temperature to generate lithium deuteride. By virtue of the method, the problems of industrialization scale preparation technology and the preparation purity of lithium deuterid are solved; a complex production device does not need to be arranged; the required preparation device is simple and easy to purchase; a lithium deuteride production line can be safely constructed under the current factory conditions; the method for preparing lithium deuteride by using the high-temperature direct manner is simple and easy to operate, is free of high-temperature pressurizing and depressurizing device in the preparation process, adopts inert gas protection, and is safe and reliable; the product is relatively high in yield and purity and good in stability, and can be stored for a long time; three wastes are not produced in the production process; the method is free of harm to the human body and the environment, environmental-friendly and green, and has important significance for safely preparing high-purity lithium deuteride in large industrial scales and applying lithium deuteride in scales.

Description

technical field [0001] The invention relates to a method for preparing lithium deuteride by a high-temperature direct method, which belongs to the cross field of material science and nuclear technology. Background technique [0002] Two nuclei with light enough energy and high enough to meet head-on, overcome the Coulomb repulsion and gather quite closely together, produce mass loss in the fusion process and release huge energy, this reaction is called nuclear fusion. The successful case of nuclear fusion application is the hydrogen bomb, and the main charge of China's first hydrogen bomb is lithium deuteride. When lithium deuteride is used as a hydrogen bomb charge, the explosive power of 1 kg is equivalent to 50000 tons of trinitrotoluene. Lithium deuteride has been used in nuclear research for decades. [0003] For a long time in the past, since lithium deuteride has been used in nuclear fusion research, the demand and usage are relatively small. However, after enterin...

Claims

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Application Information

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IPC IPC(8): C01D15/00
Inventor 刘吉平刘晓波
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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