Fused silica sand is the amorphous (glassy) state of silica (quartz, silica). It is a typical glass with long-range disorder in its atomic structure. It provides its high operating temperature and low thermal expansion coefficient through cross-linking of the three-dimensional structure. Let's talk about its main purpose:

It comes from a variety of magmatic rocks, sedimentary rocks and metamorphic rocks. There are few heavy minerals. The associated minerals are feldspar, mica and clay minerals. Quartzite is divided into two types: sedimentary genesis and metamorphic genesis. The former has no obvious boundary between clastic particles and cements, and the latter refers to quartzite ore with deep metamorphism and pure quality. Vein quartz is formed by the action of hydrothermal, almost entirely composed of quartz, with a dense block structure.

The mineral content in quartz sand varies greatly, with quartz as the main component, followed by feldspar, mica, cuttings, heavy minerals, and clay minerals.

Fused silica is generally used as the main raw material for refractory materials, ceramic raw materials and glass raw materials, epoxy resin casting, electronic sealing materials, electric light sources, medical treatment, casting, and other industries. It is also an ideal filler for chemical industries such as paint and coatings.

The content of silicon dioxide must not be less than 99.99% for the first grade, 99.96% for the first grade, not less than 99.95% for the second grade, not less than 99.7% for the third grade, and not less than 99.6% for the fourth grade.

Chemical composition: SiO2 99.9-99.95% Fe2O3 10PPM-25PPM max Li2O 1-2PPM max Al2O3 20-30PPM max

K2O 20-25PPM max Na2O 10-20PPM max

Physical properties:

The appearance is colorless and transparent block, granule or white powder.

True proportion: 2.21;

Mohs hardness: 6.0;

PH value: 6.0;

The above is a brief introduction of fused silica sand that the editor gave you. It is about its use, you can simply understand it. Lianyungang Oster Silicon Powder Co., Ltd. has been producing quartz for many years. The quality is reliable and the content is for your reference only. If you need consultation, please contact us.