Fiberglass drying bed

A fiberglass drying bed is a device that uses a drying medium to fluidize granular materials for drying. It features high heat exchange efficiency, uniform drying, and a high level of automation. It is suitable for loose granular materials, especially heat-sensitive materials. The particle size of the material to be dried is subject to certain limitations; generally, it should be greater than 30μm and less than 6mm. When drying a mixture of several materials, their relative densities should be close. Materials with excessively high moisture content and a tendency to stick are not suitable. In the production of refractory materials in China, it is used to dry Al2O3-C and Al2O3-ZrO2-C granular materials. This equipment operates intermittently, with each cycle including feeding, drying, and unloading, taking approximately 40-50 minutes. It can also achieve automatic continuous operation of feeding, drying, and unloading.

High-temperature gas with a certain speed passes through the plate holes under the sieve plate. Its flow rate slightly exceeds the critical fluidization velocity, causing the bed material particles to be violently agitated and displaced, resulting in irregular movement to form a mixed bed of material particles and gas. The gas and solid phases have good contact, with numerous surface renewal opportunities, enhancing the heat and mass transfer between the two phases. The temperature inside the bed is uniform, the heat transfer speed is fast, and the drying efficiency is high. After drying, cold air with a higher speed is introduced from under the sieve plate to cool the material, which is then discharged with the air stream. The dust carried by the dried gas is separated by a dust collector and discharged by a fan.

Fiberglass, also known as GFRP (Glass Fiber Reinforced Plastic), generally refers to reinforced plastics using glass fiber to reinforce unsaturated polyester, epoxy resin, and phenolic resin matrices. Glass fiber or its products are used as reinforcing materials, making it glass fiber reinforced plastic, or fiberglass. This is different from tempered glass.
Due to the different types of resins used, there are polyester fiberglass, epoxy fiberglass, and phenolic fiberglass. It is lightweight and hard, non-conductive, stable in performance, has high mechanical strength, low recyclability, and is corrosion-resistant. It can replace steel in manufacturing machine parts and the outer shells of automobiles and ships.
Fiberglass, the formal name is fiber-reinforced plastic, commonly known as FRP (Fiber Reinforced Plastics), which is a fiber-reinforced composite plastic. According to the fibers used, it is divided into glass fiber reinforced composite plastic (GFRP), carbon fiber reinforced composite plastic (CFRP), boron fiber reinforced composite plastic, etc. It is a composite material using glass fiber and its products (glass cloth, tape, felt, yarn, etc.) as reinforcing materials and synthetic resin as the matrix material. Fiber-reinforced composite materials consist of reinforcing fibers and a matrix. The diameter of the fibers (or whiskers) is very small, generally below 10μm, with fewer and smaller defects. The fracture strain is within about 0.3%, and it is a brittle material that is easily damaged, fractured, and corroded. Compared to the fibers, the matrix has much lower strength and modulus, but it can withstand large strains and often exhibits viscoelasticity and elastoplasticity, making it a ductile material.