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Leak-proof protection device of vacuum furnace and formula and preparation process thereof

A protection device, vacuum furnace technology, applied in furnaces, crucible furnaces, furnace types, etc., can solve the problems of raw material liquid leakage, explosion, furnace body breakdown, etc., and achieve the effects of low cost, high hardness and long service life

Inactive Publication Date: 2011-03-16
龙岩市龙创硅业有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the refining process, the furnace temperature in the sealed furnace body is generally as high as 1700°C. At such a high temperature, the crucible containing the raw material liquid in the vacuum furnace is prone to rupture and cause the raw material liquid to leak, as high as 1700°C. After the material liquid leaks and drops to the bottom of the furnace body of the vacuum furnace, because the bottom of the furnace body cannot withstand such a high temperature, the furnace body is broken down, causing the cooling water in the interlayer of the furnace body to be decomposed when it encounters high temperature instantly A large amount of gas is generated, causing the furnace body to generate high-pressure gas instantly and cause an explosion
However, the explosion problem caused by the breakdown of the material liquid caused by the broken crucible and the bottom of the vacuum furnace has not been solved so far at home and abroad.

Method used

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  • Leak-proof protection device of vacuum furnace and formula and preparation process thereof
  • Leak-proof protection device of vacuum furnace and formula and preparation process thereof
  • Leak-proof protection device of vacuum furnace and formula and preparation process thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0012] The anti-leak protection device for vacuum furnace of the present invention is made by mixing the following substances in weight fraction ratio: electrode paste 80%, silicon carbide 5%, aluminum oxide 5%, magnesium oxide 5%, sodium carbonate solution (concentration is 95 %) 3%, water 2% as the main component, forming a 100% mixing ratio; sodium silicate powder is used as the adhesive, and the added amount is 15% of the main component.

[0013] The preparation process of the present invention is as follows: use electrode paste, silicon carbide, aluminum oxide, and magnesium oxide as the main raw materials, use sodium silicate (commonly known as water glass) powder as the binder, and use ultrapure water to mix and stir the above materials After uniformity, the casting mold is formed, and then processed through high-temperature calcination, pressing and other processes. During the calcination process, due to the continuous evaporation of water, the calcined model continues ...

Embodiment 2

[0014] Example 2: The container is made by mixing the following material formulas by weight fraction: electrode paste 90%, silicon carbide 2%, aluminum oxide 1%, magnesium oxide 2%, sodium carbonate solution (95% concentration) 3 %, water 2%. The amount of sodium silicate added is 10% of the main component total amount; all the other are the same as Example 1 of Embodiment 4.

Embodiment 3

[0015] Embodiment 3: The container is made by mixing the following material formulas by weight fraction ratio: electrode paste 85%, silicon carbide 3%, aluminum oxide 4%, magnesium oxide 3%, sodium carbonate solution (concentration is 95%) 4 %,Water1%. Sodium silicate addition is 16% of main component total amount; All the other are identical with embodiment 1.

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Abstract

The invention relates to a leak-proof protection device of a vacuum furnace and a formula and a preparation process thereof. The technical proposal is that the leak-proof protection device is a vessel matched with a vacuum hearth. The leak-proof protection device has the advantages of high hardness and tolerance of high temperature of 2,400 DEG C and vacuum high pressure, can ensure that a vacuumfurnace body does not explode under the condition that a melting crucible of the vacuum furnace is fractured and a molten liquid raw material is seeped, and has low cost and long service life.

Description

technical field [0001] The invention relates to a vacuum furnace leakage protection device, its formula and preparation process. Background technique [0002] Vacuum furnaces are mainly used to extract a specific high-purity metal or non-metal elemental substance, such as refining high-purity gold or high-purity silicon. However, during the refining process, the furnace temperature in the sealed furnace body is generally as high as 1700°C. At such a high temperature, the crucible containing the raw material liquid in the vacuum furnace is prone to rupture and cause the raw material liquid to leak, as high as 1700°C. After the material liquid leaks and drops to the bottom of the furnace body of the vacuum furnace, because the bottom of the furnace body cannot withstand such a high temperature, the furnace body is broken down, causing the cooling water in the interlayer of the furnace body to be decomposed when it encounters high temperature instantly A large amount of gas is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F27B14/10C04B35/66C01B33/037
Inventor 吴雄
Owner 龙岩市龙创硅业有限公司