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Crucible and preparation method thereof

A technology of crucible and silicon monoxide, which is applied in glass manufacturing equipment, manufacturing tools, glass forming, etc., and can solve the problems of low crucible strength, variable crucibles, and easy breakage of crucibles, etc.

Inactive Publication Date: 2013-10-23
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems that the fused silica ceramic crucible prepared in the prior art method has low strength and low density, which causes the crucible product to be easily deformed in the ingot and cristobalite crystallization in the prepared crucible is serious, resulting in the crucible being easily broken in the ingot, The invention provides a method for preparing a crucible, and the crucible prepared by the method has the characteristics of high density and high strength

Method used

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preparation example Construction

[0010] The preparation method of the crucible disclosed in the present invention comprises mixing the raw material composition to obtain a slurry, then homogenizing, mixing and molding the slurry to obtain a green body, drying and sintering the green body to obtain a crucible; wherein the raw material composition It includes the first fused silica sand and deionized water; and, before the forming, it also includes adding silicon monoxide into the slurry.

[0011] According to the present invention, the first fused silica sand in the above raw material composition is well known in the art, in order to reduce the impact of impurities in the raw material on the product crucible, preferably, the SiO in the first fused silica sand 2 The content is above 99.95wt%.

[0012] For the above-mentioned first fused silica sand, preferably, the first fused silica sand includes fused silica sand A and fused silica sand B, based on the total weight of the first fused silica sand, the fused si...

Embodiment 1

[0031] This embodiment is used to illustrate the preparation method of the crucible and the crucible disclosed in the present invention.

[0032] The raw materials adopted in this embodiment are as follows:

[0033] The first fused silica sand: the SiO2 content is 99.95wt%, and the particle size composition of the first fused silica sand is: 30wt% with a particle diameter of 5-20mm, and 70wt% with a particle diameter of 1-2mm.

[0034] 100 parts by weight of the first fused silica sand, 20 parts by weight of deionized water and 0.5 parts by weight of silicon monoxide with a purity of 99.0% were added to the ball mill for 10 hours, and the slurry obtained after ball milling was homogenized. Continuously stir at 20r / min, the total time of homogenization is 8 days, add gum arabic accounting for 0.6wt% of the slurry weight on the 7th day of homogenization, mix the homogenized slurry with the second fused silica sand Mix in the mixing box for 2 hours, wherein, based on the homoge...

Embodiment 2

[0036] This embodiment is used to illustrate the preparation method of the crucible and the crucible disclosed in the present invention.

[0037] The raw materials adopted in this embodiment are as follows:

[0038] The first fused silica sand: the content of SiO2 is 99.99wt%. The particle size composition of the first fused silica sand is: 20wt% with a particle diameter of 15-40mm, and 80wt% with a particle diameter of 2-4mm.

[0039] 100 parts by weight of fused silica, 36 parts by weight of deionized water and 2 parts by weight of silicon monoxide with a purity of 99.5% were added to a ball mill and milled for 12 hours. The slurry obtained after the ball milling was homogenized at 30 r / Min carried out continuous stirring, and the total time of homogenization was 10 days. On the 9th day of homogenization, carboxymethyl cellulose was added to the slurry and accounted for 0.1wt% of the slurry weight, and the homogenized slurry was mixed with the second The fused silica sand ...

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Abstract

The invention provides a preparation method of a crucible and the crucible prepared by the method. The method comprises the steps of: mixing raw material compositions to obtain slurry; then, homogenizing, mixing and molding the slurry to obtain a green body; and drying and sintering the green body to obtain the crucible, wherein the raw material compositions comprise first fused quartz sand and deionized water; and before the slurry is molded, silicon monoxide is added into the slurry. The crucible prepared by the method is high in strength.

Description

technical field [0001] The invention relates to a method for preparing a crucible and a crucible prepared by the method. Background technique [0002] With the intensification of the traditional energy crisis and the increasing investment in green and environmentally friendly renewable energy, solar energy has become one of the most promising new energy sources. At present, the main method of using solar energy is photovoltaic power generation, that is, converting solar energy into electrical energy through solar cells for use. Solar cells in the industry mainly include crystalline silicon solar cells, amorphous silicon solar cells, and thin-film solar cells. Because crystalline silicon solar cells have the advantages of high efficiency, good stability, and long life, they are widely used and occupy a large share of the solar cell market. More than 80%. [0003] Fused silica sand is the amorphous state (glass state) of silicon oxide (quartz, silica). It is a typical glass,...

Claims

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Application Information

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IPC IPC(8): C03B20/00C03C10/14
CPCC03B19/066Y02P40/57
Inventor 沈益顺李江恒姜占锋
Owner BYD CO LTD
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