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Low-electric conductivity liquid-state tritium proliferation agent for fusion and preparation method thereof

A tritium breeder, low-conductivity technology, applied in the field of low-conductivity liquid tritium breeder for fusion and its preparation, can solve the problems of low electrical conductivity, MHD effect, etc., achieve low electrical conductivity, increase outlet temperature, and simplify packaging. The effect of layer structure

Active Publication Date: 2016-03-16
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems existing in the prior art, the present invention provides a nano-metal fluid with low electrical conductivity, which solves the MHD effect problem faced by the liquid metal breeder in the current magnetic confinement fusion reactor

Method used

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  • Low-electric conductivity liquid-state tritium proliferation agent for fusion and preparation method thereof
  • Low-electric conductivity liquid-state tritium proliferation agent for fusion and preparation method thereof

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Embodiment 1

[0028] The invention discloses a low-conductivity liquid tritium breeder for fusion, the tritium breeder is a mixture of liquid matrix and dispersed particles, and the conductivity is 1-10 6 Between s / m, it contains the following components: liquid proliferation agent matrix, dispersed particles;

[0029] The matrix of the liquid proliferator is metallic lithium (Li), or lithium tin (LiSn), or liquid lead-lithium eutectic (LiPb), or other liquid alloys containing lithium, or liquid molten salt substances;

[0030] The dispersed particles are in the form of nanoparticles or microparticles with a particle size ranging from 1nm to 1mm, and the material is silicon carbide (SiC) or aluminum oxide (Al 2 o 3 ), or beryllium oxide (BeO), or silicon dioxide (SiO 2 ), or erbium oxide (Er 2 o 3 ), or lithium silicate (Li 2 SiO 3 ), or lithium orthosilicate (Li 4 SiO 4 ), or lithium titanate (Li 2 TiO 3 ), or lithium oxide (Li 2 O), or lithium metaaluminate (LiAlO 2 ), or lith...

Embodiment 3

[0037] Such as figure 1 Shown is the schematic diagram of the preparation equipment of the present invention, and the following is the implementation method formed in the process of preparing the low-conductivity liquid tritium multiplier of the present invention:

[0038] Step 1: Select insulating nanoparticles or microspheres;

[0039] Step 2: Carry out high-temperature calcination and purging treatment with inert gas at the same time;

[0040] Step 3: modifying the particle surface;

[0041]Step 4: By volume, the calcined insulating nanoparticles or microsphere particles 3 are mixed with the liquid metal 6 matrix;

[0042] Step 5: Melt the liquid metal 6 in the atmosphere-protected or vacuum high-temperature furnace 5, and heat the original 2 through the high-temperature heating furnace to control the temperature range at 200°C-1000°C;

[0043] Step 6: Stir the liquid metal or molten salt added with insulating particles for 0.5-12 hours by mechanical stirring device 4 an...

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Abstract

The invention discloses low-electric conductivity liquid-state tritium proliferation agent for fusion and a preparation method thereof. The proliferation agent is the mixture of a liquid-state base body and dispersion particles. The conductivity is 1-106s / m. The proliferation agent comprises: by volume percentage, liquid-state proliferation agent base body 60%-99.99% and dispersion particles 0.01%-40%. The dispersion particles are prepared from silicon carbide, or aluminium oxide, or beryllia, or silica, or erbium oxide, or lithium silicate, or positive lithium silicate, or lithium titanate, or lithium oxide, or lithium aluminate, or lithium zirconate, or two of them, or more of them. The preparation method comprises steps of dispersing roasted dispersion particles into liquid state metal in a high temperature furnace with atmosphere protection via mechanical stirring. According to the invention, on the premise that performance of tritium proliferation is well ensured, electric conductivity is effectively reduced and heat conductivity is increased, thereby remarkably reducing magnetohydrodynamics pressure drop (MHD effects) of liquid-state tritium proliferation agent in high magnetic field.

Description

technical field [0001] The invention belongs to the field of fusion nuclear energy material engineering, and mainly relates to cladding tritium breeder materials, in particular to a low-conductivity liquid tritium breeder for fusion and a preparation method thereof. Background technique [0002] In a fusion reactor, the cladding is a key component to realize the multiplication of tritium fuel and the output of fusion nuclear energy, and plays an important role in the multiplication of tritium. At present, there are two types of cladding proliferators: solid proliferators and liquid proliferators. The solid proliferators are made of high-temperature-resistant ceramic balls made of lithium silicate, lithium titanate, lithium zirconate, and lithium oxide. When working, the 14MeV high-energy neutrons generated by the fusion reaction react with the lithium in the pellet to generate tritium, and the generated tritium is extracted by purging helium at a suitable temperature. Due t...

Claims

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Application Information

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IPC IPC(8): G21B1/11
CPCG21B1/11Y02E30/10
Inventor 倪木一蒋洁琼张世超孟孜季翔
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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