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Molten-salt solid solution and method and device for preparing same

A preparation device and solid solution technology, which is applied in chemical instruments and methods, lighting and heating equipment, inorganic chemistry, etc., can solve the problems of poor corrosion resistance of preparation devices, easily affected composition and physical and chemical properties, and achieve the effect of reducing corrosion

Active Publication Date: 2017-03-08
SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome defects such as the appearance, composition and physical and chemical properties of the molten salt solid solution in the prior art are easily affected, and the corrosion resistance of the preparation device is poor, and a kind of molten salt solid solution and its preparation method and preparation device are provided

Method used

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  • Molten-salt solid solution and method and device for preparing same
  • Molten-salt solid solution and method and device for preparing same
  • Molten-salt solid solution and method and device for preparing same

Examples

Experimental program
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Effect test

Embodiment 1

[0042] A preparation device for molten salt solid solution, its schematic diagram is as follows figure 1 As shown, the preparation device consists of a crucible furnace and an auxiliary system connected to the crucible furnace, wherein the auxiliary system includes a temperature control system, an inert atmosphere protection device, a vacuum system, a cooling water circulation system and an exhaust gas absorption device.

[0043] Among them, the structure of the crucible furnace is as follows Figure 2-5 as shown, figure 2 Schematic diagram of the structure of the crucible furnace, image 3 is the top view of the crucible furnace, Figure 4 is the cross-sectional view of the crucible furnace along line A-A, Figure 5 It is a sectional view of the crucible furnace along the line B-B. Such as Figure 2-5 As shown, the crucible furnace includes an inner furnace shell bracket 4, an outer furnace shell 5, an inner furnace shell 6, an inner tank 9, a furnace 7, an insulation l...

Embodiment 2

[0049] This embodiment describes the specific preparation method for preparing molten salt solid solution using the preparation device of Embodiment 1:

[0050] Program the temperature of the crucible furnace through the temperature control system, and preheat the furnace 7 to 150°C; then mix LiNaKF, ThF 4 and UF 4 Solid molten salt, a total of 10g, was put into a glassy carbon crucible, and this operation was carried out in a glove box; after that, two corundum bricks were placed at the bottom of the inner tank 9 of the crucible furnace, and the glassy carbon crucible was quickly transferred from the glove box to the inner tank. In the tank 9, close the inner tank cover 10;

[0051] Open the vacuum system and continue to heat the crucible furnace. When the temperature in the inner tank 9 rises to 350°C, keep the constant temperature and open the cooling water circulation system; meanwhile, open the inert atmosphere protection device and use argon to replace the air in the cr...

Embodiment 3

[0054] This embodiment describes the specific preparation method for preparing molten salt solid solution using the preparation device of Embodiment 1:

[0055] Program the temperature of the crucible furnace through the temperature control system, and preheat the furnace chamber 7 to 150°C; then mix uniformly LiNaKF and UF 4 Solid molten salt, a total of 20.5g, was put into a glassy carbon crucible, and this operation was carried out in a glove box; after that, two corundum bricks were placed at the bottom of the inner container 9 of the crucible furnace, and then the glassy carbon crucible was quickly transferred from the glove box In the inner container 9, close the inner container cover 10;

[0056] Open the vacuum system and continue to heat the crucible furnace. When the temperature in the inner tank 9 rises to 350°C, keep the constant temperature and open the cooling water circulation system; meanwhile, open the inert atmosphere protection device and use argon to replac...

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Abstract

The invention discloses a molten-salt solid solution and a method and a device for preparing the same. The method includes the steps of uniformly mixing solid molten salt in the absence of water and oxygen, preheating the uniformly mixed solid molten salt, holding at 300-400 DEG C, heating to 600-1,100 DEG C to perform melting reaction, and cooling after reaction is completed so as to obtain the molten-salt solid solution. The device comprises a crucible furnace composed of an internal furnace shell, an internal furnace, a combustion chamber, a heat insulation layer and a sealing device, the internal furnace, the combustion chamber and the heat insulation layer are arranged in the internal funface shell, wherein the combustion chamber wraps the outer side of the internal furnace, the heat insulation layer is arranged on the outer wall of the combustion chamber, the sealing device is arranged at an opening of the internal furnace, a space enclosed by the sealing device and the internal furnace forms a hollow cavity, and the internal furnace is made of high-temperature nickel-base alloy. The method is high in purity and yield of the molten-salt solid solution. The device for preparing the molten-salt solid solution based on the method is highly resistant to high temperature and corrosion and high in sealability and is capable of removing moisture and oxygen fundamentally in a preparation process.

Description

technical field [0001] The invention relates to a molten salt solid solution, a preparation method and a preparation device thereof. Background technique [0002] When the molten salt solid solution is prepared at a high temperature of 1100°C and in an environment where corrosive substances exist, the presence of moisture and oxygen in the crucible furnace will change the appearance, uniformity, chemical composition and physical and chemical properties of the prepared molten salt solid solution. , which in turn affects the purity and yield of molten salt solid solution. In order not to affect the properties of the obtained molten salt solid solution, it is necessary to improve the existing preparation method to fundamentally remove the moisture and oxygen present in the preparation process. However, the existing preparation method cannot be truly non-toxic. The water has no oxygen, and the purity and uniformity of the obtained molten salt solid solution are not ideal. [0...

Claims

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Application Information

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IPC IPC(8): C01F15/00C01G43/00C01D15/04C01D3/02F27B14/10
Inventor 郑小北刘玉侠张岚
Owner SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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