How does silica sand dryer improve the quality of industrial silica sand?

  Silica sand if mainly composed of SiO₂, which has good wear resistance, fire resistance, and insulation properties. It is widely used in glass, casting, ceramics, refractory materials, metallurgy and other industries. However, natural silica sand contains high moisture and impurities and cannot be directly used in industries such as glass and casting. This greatly affects the convenience transportation and subsequent processing. So, how to improve the quality of silica sand? What role does silica sand dryer play in this process?

  The silica sand upgrading process primarily includes drying, magnetic separation, screening, and acid washing. The silica sand dryer is used to reduce the moisture of natural silica sand to 0.5%-1%, providing convenient conditions for subsequent processing and improving separation efficiency. Except moisture reduction, silica sand dryer will also reduce the impurity content of silica sand. During the rotation of silicon sand particles in the drum, they come into contact with hot air, causing some dust and impurities to be removed, resulting in purer silicon sand particles. Research shows that after drying, the clay content in silicon sand decreases from 3–5% to below 0.5%, while impurities such as iron can be reduced by 20–30% when combined with magnetic separation. The dried silica sand is not easy to absorb moisture and caking, ensuring more stable product properties, easy to store and transport.

  Based on traditional dryer, the new generation of silica sand dryer has been technically upgraded. The equipment adopts a multi-layer lifting plate design to significantly improve thermal efficiency. It is equipped with an intelligent temperature control system to prevent silica sand particles from being overly dry and affecting their quality. Additionally, an exhaust gas waste heat recovery system further reduces energy consumption. Compared to conventional dryers, the new generation of silica sand dryer's thermal efficiency is improved by 50%.

  In a word, silica sand drying is a key step in the quality improvement process of silica sand, silica sand dryer not only removes moisture but also purifies the sand, increasing its value. If you'd like to learn more about the details of silica sand upgrading process, feel free to contact us anytime.