- Appearance: Melted quartz powder usually appears as colorless transparent blocks, granules, or white powdered form.
- Chemical Composition: The main component is silicon dioxide (SiO₂), with varying contents based on the purity grade of the product. The content of SiO₂ in Grade A products must not be less than 99.99%, Grade B must not be less than 99.96%, Grade C must not be less than 99.95%, Grade D must not be less than 99.7%, and Grade E must not be less than 99.6%.
- Physical Properties: High operating temperature, low coefficient of thermal expansion, and excellent thermal stability. Melting point is approximately 1713°C, low thermal conductivity, and a coefficient of thermal expansion that is nearly the smallest among refractory materials, thus offering exceptional thermal shock resistance.
Application Fields
Fused quartz powder is widely used in various fields due to its excellent properties:
- 精密铸造: As refractory material for shell mold casting patterns, it can be used for surface or back coating, as well as sanding material.
- Glass and Ceramics: Essential raw materials for manufacturing glass, ceramics, and their products, such as flat glass, float glass, glassware, ceramic glazes, etc.
- Refractory Materials: Used for manufacturing high-silica bricks, common silica bricks, and other refractory materials for kilns, as well as enhancing the high-temperature resistance and fireproof properties of refractory boards.
- Electronic Appliances: In the electronics sector, fused quartz powder is used for manufacturing semiconductor devices, solar cells, LCD screens, etc., due to its excellent optical transparency and chemical stability.
- Chemical Paints: Ideal filler for the chemical industry, such as paints and coatings, enhancing product wear and weather resistance.
- Other applications: Suitable for epoxy resin casting, electronic sealing materials, electrical light sources, medical fields, etc.
Product Advantages
- High Purity: The product boasts a high purity level, meeting the strict purity requirements of various industries.
- Low thermal expansion coefficient: Possesses an extremely low thermal expansion coefficient, maintaining stable dimensions and shape in high-temperature environments.
- High heat resistance: Capable of withstanding extreme temperatures, able to endure the test of high-temperature environments.
- Good chemical stability: Insoluble in acids, slightly soluble in KOH solution, with excellent chemical stability.
