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A kind of preparation method of lithium-lead alloy li17pb83 that nuclear industry is used

A lithium-lead alloy and nuclear industry technology, which is applied in the field of preparation of high-purity lithium-lead alloy Li17Pb83, can solve the problems such as difficulty in content control and temperature control, and achieve the effects of solving difficulty in control, reducing Li loss in smelting, and ensuring safety

Active Publication Date: 2016-02-10
ANHUI SCI & TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to overcome the deficiencies in the prior art, and a kind of lithium-lead alloy Li that nuclear industry is used is provided 17 Pb 83 The preparation method is to solve the problems of macro segregation in the alloy, the formation of high melting point compounds, etc., solve the problem of difficult local temperature control during the preparation process, solve the difficulty of controlling the content of Li in the alloy, and the uniformity of lithium content in the finished alloy and other issues, to achieve precise control of the alloy composition, and to efficiently smelt lithium-lead alloy Li with qualified composition for the nuclear industry. 17 Pb 83

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The lithium-lead alloy Li was prepared according to the following steps 17 Pb 83 :

[0032] (1) Argon gas (99.99%) must be treated to remove impurities such as water and oxygen before use.

[0033] (2) Using high-purity lithium and high-purity lead as raw materials, the raw materials Pb and Li are respectively processed into powder in a high-purity argon environment, and the particle size is 250 mesh for Pb and 250 mesh for Li.

[0034] (3) Pb powder and Li powder are uniformly mixed: according to the design composition Pb: 99.32% ± 0.01%, Li: 0.68 ± 0.01%, carry out batching, Pb powder and Li powder are respectively loaded into their respective feed hoppers; enter the stirring tank for During mechanical stirring, Pb powder enters part first, start the mechanical mixer to stir, then Li powder and Pb powder enter the mixing tank through their respective feeding hoppers and mix, stir for 20 minutes, let Li powder and Pb powder fully contact and mix evenly.

[0035] (4)...

Embodiment 2

[0041] The lithium-lead alloy Li was prepared according to the following steps 17 Pb 83 :

[0042] (1) Argon gas (99.995%) must be treated to remove water, oxygen and other impurities before use.

[0043] (2) Using high-purity lithium and high-purity lead as raw materials, the raw materials Pb and Li are respectively processed into powder in a high-purity argon environment, and the particle size is 200 mesh for Pb and 200 mesh for Li.

[0044] (3) Pb and Li solid powder mixing: according to the design composition of Li and Pb, Pb: 99.32% ± 0.01%, Li: 0.68 ± 0.01%, carry out batching, Pb powder and Li powder are respectively loaded into respective feed hoppers; When the stirring tank is mechanically stirred, the Pb powder enters a part first, starts the mechanical mixer to stir, then the Li powder and the Pb powder enter the mixing tank through their respective feeding hoppers and mix, and stir for 30 minutes, so that the Li powder and the Pb powder are fully contacted and mi...

Embodiment 3

[0051] The lithium-lead alloy Li was prepared according to the following steps 17 Pb 83 :

[0052] (1) Argon gas (99.999%) must be treated to remove impurities such as water and oxygen before use.

[0053] (2) Using high-purity lithium and high-purity lead as raw materials, the raw materials Pb and Li are respectively processed into powder in a high-purity argon environment, and the particle size is: 150 mesh for Pb and 150 mesh for Li.

[0054] (3) Pb and Li solid powder mixing: according to the design composition matrix is ​​Pb; Li: 0.68 ± 0.01% is carried out batching, and Pb powder and Li powder are respectively packed into respective feeding hoppers; When entering the stirring tank for mechanical stirring, Pb The powder enters a part first, start the mechanical mixer to stir, then the Li powder and Pb powder enter the mixing pool through their respective feeding hoppers and mix, and stir for 30 minutes, so that the Li powder and Pb powder are fully contacted and mixed e...

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Abstract

The invention discloses a preparation method of a lithium-lead alloy Li17Pb83 for nuclear industry. The preparation method comprises the following steps: processing raw materials Pb and Li into powder with the particle size of 150-250 meshes in a high-purity argon atmosphere respectively, further blending materials according to design components and uniformly mixing; adding the mixed Pb powder and Li powder into a smelting furnace in batches for heating and melting, simultaneously performing continuous electromagnetic stirring, controlling the temperature not higher than 470 DEG C, maintaining the stirring for 15-25min, then standing a melt at the temperature of 400-450 DEG C for 1-3h, then filtering to remove Li and Pb compounds with high melting points; and performing vacuum casting on the lithium-lead alloy Li17Pb83 after filtration at the temperature of 270-320 DEG C by using a special casting mold to obtain an alloy cast ingot. By adopting the method, the key problems of segregation of the components, difficult temperature control, difficult Li content control and the like in the alloy preparation process are solved.

Description

technical field [0001] The invention relates to a method for preparing an alloy, in particular to a high-purity lithium-lead alloy Li for the nuclear industry. 17 Pb 83 method of preparation. Background technique [0002] Fusion energy is one of the important ways that human beings realize can finally solve human energy crisis and environmental problems, and it is a "safe, clean and permanent" energy source. [0003] High-purity lithium-lead alloy is the core material in nuclear fusion reactors. It uses lithium to produce hydrogen isotope tritium under the bombardment of high-energy neutrons. Tritium and deuterium extracted from seawater undergo nuclear fusion reactions to generate huge energy. The bottom is in a liquid state, and the huge heat generated by nuclear fusion is taken out to generate electricity for human use through circulating cooling. [0004] As a tritium multiplier, coolant and neutron multiplier, lithium-lead alloy has good resistance to radiation damag...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/02C22C11/02
Inventor 章毛连吴宜灿黄群英许万祥张永锋冯捷何恩节朱志强高胜李春京
Owner ANHUI SCI & TECH UNIV
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