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Preparation method for high-purity melted quartz powder material

A technology for fused silica powder and fused silica is applied in the field of preparation of high-purity fused silica powder materials, which can solve the problems of high energy consumption, low product added value, waste of resources, etc. Risk, purification effect is remarkable

Inactive Publication Date: 2014-03-26
中材高新江苏硅材料有限公司
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  • Abstract
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Problems solved by technology

[0003] At present, the preparation of high-purity fused silica powder materials in my country mainly uses high-quality high-purity vein quartz for processing. The process is relatively simple, and SiO 2 The content has been unable to break through 99.99%, the added value of the product is low, the energy consumption is high, the environmental protection problem is prominent, and the waste of resources is serious

Method used

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Embodiment Construction

[0016] The present invention will be further described in detail below in conjunction with specific embodiments. It should be understood that these examples are only for illustration of the present invention, but not to limit the scope of the present invention in any way.

[0017] In this embodiment, the vein quartz produced in Donghai County, Jiangsu Province is used as raw material, and processed according to the following procedures:

[0018] 1. Crush the vein quartz with a hammer crusher or jaw crusher to 4-25mm, and remove the clay impurities attached to the surface of the quartz minerals by washing and grading desliming methods; after the deslimed vein quartz minerals are dried, , sort and discard the non-quartz impurities that can be identified by naked eyes.

[0019] 2. Electrostatic removal of impurities is carried out on the sorted quartz ore. The drum speed of the electrostatic removal equipment is 100r / min, the voltage is 18,000 volts, and the electrostatic remov...

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Abstract

The invention discloses a preparation method for a high-purity melted quartz powder material. The method comprises the following steps of comprehensively removing impurities from crude vein quartz mine, namely performing rough crushing, manual selection, electrostatic impurity removal, fine crushing and screening, high-gradient magnetic separation, acid washing impurity removal, washing and air-drying to obtain clean quartz sand; placing the clean quartz sand in an active gas melting furnace for purification, namely introducing active gas in the high-temperature melting furnace to obtain a high-purity melted quartz block; crushing the melted quartz block into powder by using a centrifugal crusher, and performing high-gradient magnetic separation on the powder to obtain high-purity melted quartz powder. According to the method, quartz powder with purity of 99.99 percent can be obtained.

Description

technical field [0001] The invention relates to a processing method for a quartz powder material, in particular to a preparation method for a high-purity fused silica powder material. Background technique [0002] Fused silica material is an important industrial raw material, widely used in new energy, new materials, electronic information, metallurgy, steel, aerospace and other fields. With the rapid development of new energy and information industries, fused silica materials have become an important strategic material, and products are developing towards high purity and controllable particle gradation. [0003] At present, the preparation of high-purity fused silica powder materials in my country mainly uses high-quality high-purity vein quartz for processing. The process is relatively simple, and SiO 2 The content has been unable to break through 99.99%, the added value of the product is low, the energy consumption is high, the environmental protection problem is promine...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/12
Inventor 吴翠珍刘福田王祥任夫洋曹雪平李海洋张金龙
Owner 中材高新江苏硅材料有限公司
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