The Characteristic of Silica Industry
The silica industry is characterized by its various technologies used for producing precipitated silica, which is mainly used as a reinforcing agent in rubber products and a thickening agent in various other applications. The most common method for producing precipitated silica is the precipitation method, which utilizes a chemical reaction between sodium silicate and sulfuric acid to produce the silica precipitate. The precipitates are then subjected to pressure filtration, drying, grinding, and packaging.
The industry standards classify precipitated silica according to its specific surface area, which is divided into six categories, namely A, B, C, D, E, and F. Each category has a range of specific surface area values, with Class A having the largest value and Class F having the smallest. To produce products of these six categories, companies must have precise control over the specific surface area, as its size is determined by the final application of the product.
The key to producing high-quality precipitated silica lies in the precise control of several parameters during the chemical reaction, including the material concentration, the order and ratio of material addition, pH, temperature, reaction rate, agitation, and intensity. These parameters directly affect the final properties of the product, such as its reinforcing ability in rubber and its thickening characteristics in other applications. Furthermore, the industry standards require multiple parameters to be measured to determine the precise and comprehensive properties of the precipitated silica.
The design of the production process and the manufacturing technology play a crucial role in ensuring the stability of product performance and high production efficiency. This requires companies to have the ability to design flexible and synchronized production processes while maintaining the stability of the manufacturing process.
Overall, the silica industry is characterized by its precise control of specific surface area and the parameters during the chemical reaction, as well as its focus on multiple testing parameters to ensure consistent product performance. The importance of flexible and stable production processes also highlights the importance of synchronized product design and manufacturing.