5, industry technical characteristics
The precipitated silica is usually chemically reacted with sodium silicate and concentrated sulfuric acid to form precipitated silica, which is then washed with water, dried, pulverized (without pulverization or granulation), classified, and packaged. The technical characteristics of the precipitation method of white carbon black are as follows:

(1) According to the industry standard, the precipitation method is classified by specific surface area, and is divided into six categories: A, B, C, D, E, and F. The specific surface area of each type has a range value, and the class A is the largest, class F. The smallest. This indicates that to fully produce these six types of products, companies must accurately master the technology to control the specific surface area, the specific surface area is determined according to the use.

(2) According to industry standards, there are 10 indicators for precipitation silica, and a single indicator cannot predict the expected performance of silica. Only a combination of multiple indicators can determine the expected performance of silica.

(3) The key technologies for the production of silica are the concentration of the material in the reaction, the proportional relationship of the feeding sequence, the pH value, the temperature, the reaction speed, and the stirring conditions. The basic properties of silica, such as reinforcement in general rubber, application in high temperature silicone rubber, thickening in thickeners, matting in coatings, and dispersibility are all determined by these reaction conditions.

(4) Process design and manufacturing technology to ensure the expected performance of the product and the high efficiency of production. This puts high demands on the process design capability that the enterprise has synchronized with the new product design, and requires the flexibility of the process design and the stability and reliability of the manufacturing process.