How Precipitated Silica Produced!

PPT silica is available in three forms: granular, powder, and pearl (bead), each suited for different applications.

The chemical reaction principle of precipitated silica (PPT) involves the reaction of sodium silicate with sulfuric acid, resulting in the formation of silica and water.

The production process of precipitated silica (white carbon black) begins with raw materials such as sodium silicate, which is derived by melting quartz sand and soda ash at high temperatures. The sodium silicate solution is then acidified by adding sulfuric acid or hydrochloric acid, resulting in the precipitation of silica. The silica is aged to stabilize its structure, then filtered, washed to remove impurities, and dried. Finally, the dried silica is milled into fine particles, producing the final precipitated silica product for various applications.

Precipitated silica is characterized by its absorbency, porosity, dispersibility, corrosion resistance, and high-temperature stability.