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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0010] The method for preparing the crucible disclosed in the present invention includes mixing a raw material composition to obtain a slurry, then homogenizing, mixing, and shaping the slurry to obtain a green body, and 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 molding, it also includes adding silicon monoxide to the slurry.

[0011] According to the present invention, the first fused silica sand in the above-mentioned raw material composition is well-known in the art. In order to reduce the influence 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, and based on the total weight of the first fused silica sand, t...

Example Embodiment

[0030] Example 1

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

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

[0033] The first fused silica sand: the content of SiO2 is 99.95wt%, and the particle size composition of the first fused silica sand is 30wt% with a particle size of 5-20mm, and 70wt% with a particle size 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 99.0% silicon monoxide were added to the ball mill and ball milled for 10 hours, and the slurry obtained after ball milling was homogenized. Stir continuously at 20r / min. The total time of homogenization is 8 days. On the 7th day of homogenization, 0.6wt% gum arabic is added to account for the weight of the slurry, and the homogenized slurry is mixed with the second fused silica sand. Mix in a mixing box for 2 hours, where, ba...

Example Embodiment

[0035] Example 2

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

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

[0038] The first fused silica sand: the content of SiO2 is 99.99wt%, and the particle size composition of the first fused silica sand is: 20wt% with a particle size of 15-40mm, and 80wt% with a particle size 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 the ball mill and ball milled for 12 hours. The slurry obtained after ball milling was homogenized, and the homogenization rate was 30r / Min continuous stirring, the total time of homogenization is 10 days. On the 9th day of homogenization, 0.1wt% of carboxymethyl cellulose is added to the slurry, and the homogenized slurry is combined with the second Fused silica sand was mixed in the mix...

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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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