What is Silicon dioxide? In the silicon dioxide crystal, the silicon atom is located at the center of the regular tetrahedron, and the four oxygen atoms are located at the four vertices of the regular tetrahedron. Many such tetrahedrons are connected by the oxygen atoms at the vertices. Each oxygen atom is The two tetrahedrons share that each oxygen atom is bound to two silicon atoms. The simplest formula of silicon dioxide is SiO2, but SiO2 does not represent a simple molecule (it only represents the ratio of the number of atoms of silicon and oxygen in the silicon dioxide crystal). Pure natural silica crystal is a hard, brittle, insoluble, colorless, and transparent solid, often used in the manufacture of optical instruments, etc.
The manufacturing method of Silicon dioxide The preparation of amorphous silica includes five steps, which are the preparation of silica gel, granulation process, sintering process, cleaning process, and drying process. 1: Preparation of silica gel We need to prepare all kinds of materials needed. 2: Granulation process The silica gel is dried to form a dry powder, and the dry powder is pulverized and then classified to obtain a silica powder having a desired average particle size. 3: Sintering process The silicon dioxide powder obtained in the granulation process is sintered at a temperature of 800°C to 1450°C, and the spheronization process using thermal plasma is used to introduce argon gas at a predetermined flow rate and generate plasma at a predetermined high-frequency output power. Put the silicon dioxide powder obtained in the sintering process into the plasma torch of the body at a predetermined supply rate, heat, and melt at a temperature from 2000 ° C to the boiling point of silicon dioxide. 4: Cleaning process Remove the fine powder attached to the surface of the spheroidized silica powder after the above spheroidization process [3]. 5: Drying process Dry the silica powder after the above cleaning process Preparation method of crystalline silica Mix the raw material containing silicon dioxide (silicon source), water, structure-directing agent, alkali, or acid in a certain proportion, put it into a pressure-resistant reactor and seal it, then raise the temperature to 100-220°C, and keep the temperature constant for 5 hours to 10 days After the reaction is over, the reactor is cooled rapidly, the reaction product is washed with water or dilute acid until the pH is 8-11, and dried to obtain the original powder, the original powder or the product formed by adding a binder in a muffle furnace or a tube furnace Medium roasting activation.
Applications of Silicon dioxide Silica is a raw material for manufacturing glass, quartz glass, water glass, optical fiber, important components of the electronic industry, optical instruments, handicrafts, and refractory materials, and it is an important material for scientific research. When the silicon dioxide is crystallized, it becomes a crystal; after silica gelation and dehydration, it becomes agate; when the hydrous colloid of silicon dioxide solidifies, it becomes opal; when the silicon dioxide crystal grains are smaller than a few microns, it forms chalcedony, flint, and secondary quartz rock. Silica can also be used as a lubricant and is an excellent flow promoter, mainly used as a lubricant, anti-sticking agent, and flow aid. It is especially suitable for the granulation of oils and extracts, and the granules produced have good fluidity and compressibility. It can also be used as a glidant in direct compression. As a disintegrant, it can greatly improve the fluidity of granules, increase the bulk density, increase the hardness of the prepared tablet, shorten the disintegration time limit, and increase the drug dissolution rate.
Price of Silicon dioxide particle size and purity will affect the product's price, and the purchase volume can also affect the cost of particle size. A large amount of large amount will be lower. The price of particle size can be found on our company's official website.
Silicon dioxide powder supplier Luoyang Tongrun Nano Technology Co. Ltd. (TRUNNANO) Luoyang City, Henan Province, China, is a reliable and high-quality global chemical material supplier and manufacturer. It has more than 12 years of experience providing ultra-high quality chemicals and nanotechnology materials, including Zinc sulfide, nitride powder, Zinc sulfide powder, sulfide powder, and 3D printing powder. If you are looking for high-quality and cost-effective Silicon dioxide, you are welcome to contact us or inquire at any time.
