Preparation method of fusion reactor cladding neutron and tritium breeder lithium beryllium oxide pellets

Abstract

The invention discloses a preparation method of fusion reactor cladding neutrons and tritium breeding agent beryllium acid lithium pellets. The preparation method of the fusion reactor cladding neutrons and tritium breeding agent beryllium acid lithium pellets comprises the following steps: preparing a beryllium acid lithium material, representing, preparing beryllium acid lithium pellets with the diameter of 1mm, detecting performances, preparing lithium hydroxide and beryllium oxide raw materials at room temperature, putting into a container according to the proportion of 1 of Li / Bi molecule mole ratio, rotating and stirring for about 20 hours, mixing fully and uniformly, putting dried gel in a sintering furnace, warming to 1073K under an air environment, forging for 5 hours, and carrying out solid phase reaction fully; taking a beryllium acid lithium sample, grinding fully into particles, analyzing the formation of components by adopting XDR (external data representation; analyzing the Li / Bi mole ratio by adopting ICP-AES (inductively coupled plasma-atomic emission spectrometry). According to the invention, the problem that when lithium silicate or lithium titanate pellets are originally adopted as breeding agents, a plurality of layers of beryllium zone breeding neutrons are required to be arranged in a cladding is overcome, so that the utilization efficiency of breeding agents in a limited space of the cladding is improved extremely, and the fusion reactor tritium self-sustaining difficulty can be solved effectively.

Description

Technical field [0001] The invention relates to a preparation method of advanced neutron and tritium multiplication agent lithium beryllate pellets and an experimental system thereof in a fusion reactor cladding, and belongs to the field of advanced nuclear reactor fuel research. Background technique [0002] Fusion energy is one of the potential effective ways for mankind to permanently solve the energy problem. The construction and operation of the International Thermonuclear Experimental Reactor (ITER) has laid the foundation for the construction of a fusion power generation demonstration reactor in the future. The high-energy neutrons (14.1Mev) produced by the fusion reactor high-temperature plasma deuterium-tritium thermonuclear fusion enter the cladding of the plasma component facing the reactor, and the nuclear reaction with the tritium breeding material in the cladding releases huge energy, and at the same time breeds the fusion The fuel tritium needed by the reactor itse...

AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is: to overcome the deficiencies in the prior art, to provide a preparation method of fusion reactor cladding neutrons and tritium multiplier lithium beryllium oxide pellets, and to solve the problem of using lithium silicate or lithium titanate pellets as When using a breeder, it is necessary to set up multi-layer beryllium regions in the cladding to breed neutrons, which greatly improves the utilization efficiency of the breeder in the limited space of the cladding, and can effectively solve the problem of tritium self-sustainability in fusion reactors

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