Rapid preparation method of multi-scale lithium spheres

A multi-scale and fast technology, applied in the field of nuclear materials, can solve the problems of complex process, many chemical and physical changes, increase production cost, etc., and achieve the effect of easy operation, simple operation and short production cycle.

Active Publication Date: 2019-05-21
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

However, these methods are difficult to control the size and shape of the generated particles, and involve many chemical and physical changes and complex processes, which greatly reduce the ball forming efficiency and increase the production cost.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] like figure 1 Shown, a kind of rapid preparation method of multi-scale lithium spheres comprises an inert gas cylinder 1, a melting lithium tank 6 and a beaker 14, an air inlet and a gas outlet are provided on the melting lithium tank 6, and the The top of the melting lithium tank 6 is provided with a feeding port 4, and the gas outlet of the inert gas storage bottle 1 is connected to the air inlet of the melting lithium tank 6 through a gas pipe-8, and an inflation valve 2 and a straight-through valve are installed on the gas pipe-8. Valve 3, the air outlet of melting lithium tank 6 is connected with gas pipe 2 9, and air release valve 5 is installed on gas pipe 2 9, and heater 7 is installed outside melting lithium tank 6, and is connected at the bottom outlet of melting lithium tank 6 There is a lithium tube 10, a lithium valve 11 is installed on the lithium tube 10, a plug 12 is connected to the lower end of the lithium tube 10, a laser hole 15 is opened at the bott...

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Abstract

The invention discloses a rapid preparation method of multi-scale lithium spheres. Under protection of inert gas atmosphere, lithium raw materials are fed into a lithium melting tank through a feed inlet and heated to a certain temperature through a heater, inert gas with gas pressure adjusted to be appropriate through an inflation valve, a straight-way valve and a deflation valve is used for squeezing liquid lithium in a lithium pipe, the liquid lithium is sprayed to a cooling agent through small holes in a plug and rapidly cooled and cured to obtain lithium spheres, the gas pressure of introduced gas is adjusted so as to produce submillimeter-scale lithium spheres with different diameters, subsequent treatment is carried out, and the clean multi-scale lithium spheres are obtained. The operation is easy, the production period is short, the lithium spheres are formed regularly, the size is controllable in submillimeter scale, the requirements of EAST device lithium sphere injection forELMs modulation and plasma fracture protection experiments can be met, and a good technical basis is provided for successful application of impurity injection in a fusion reactor in the future.

Description

technical field [0001] The invention relates to the technical field of nuclear materials, in particular to a rapid preparation method of multi-scale lithium spheres. Background technique [0002] Lithium metal has been considered as a possible plasma-facing material, tritium-generating material, etc. due to its unique physicochemical properties (low Z, low melting point, strong chemical activity, etc.). In the past ten years, lithium has been used in various forms (such as lithium vacuum coating, liquid lithium limiter, lithium divertor, etc.) in various fusion devices such as EAST, NSTX, FTU, T-10, and TJ-II. Recently, a lithium sphere injection experiment was carried out on the EAST device, in which lithium was made into spherical particles and injected into the plasma from the mid-plane to realize the control of plasma boundary localized modes (ELMs). In addition, the use of high-pressure gas to drive the injection of small-scale lithium spheres can also alleviate the pl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/08
Inventor 黄明孙震胡建生左桂忠钱玉忠任君孟献才徐伟李成龙
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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