I. Introduction. High-speed centrifugal spray dryer is a kind of drying equipment widely used in industrial production, which uses a high-speed rotating atomizer to disperse the liquid into tiny droplets, and quickly evaporates and dries under the action of hot air drying. Alumina powder is an important raw material widely used in ceramics, metallurgy, electronics and other fields, and its preparation process needs to be dried. This paper will focus on the application of high-speed centrifugal spray dryer in drying alumina powder, and analyze its drying principle, equipment structure and operation points, in order to provide reference for related production.
Second, the working principle of high-speed centrifugal spray dryer.
The working principle of the high-speed centrifugal spray dryer is mainly based on the action of the centrifugal force field, which disperses the liquid into tiny droplets through a high-speed rotating atomizer. Under the action of the centrifugal force field, the droplets are thrown around the dryer and at the same time subjected to the hot air. The hot air exchanges heat with the droplets, so that the water in the droplets quickly evaporates and dries. After drying, solid particles are collected by gravity or air flow, while the exhaust gas is discharged by the dust collector.
3. Equipment structure of high-speed centrifugal spray dryer.
The high-speed centrifugal spray dryer is mainly composed of a feeding system, an atomizer, a drying tower, a hot air system, a discharging device and a control system. Among them, the feeding system is responsible for transporting the liquid to be dried to the atomizer;Nebulizers disperse the liquid into tiny droplets;The drying tower provides a drying environment for the droplets;The hot air system is responsible for providing the hot air required for drying;The discharge unit is responsible for collecting the solid particles after drying;The control system automatically controls the entire equipment.
Fourth, the application of high-speed centrifugal spray dryer in drying alumina powder.
In the preparation process of alumina powder, it needs to go through the process of spray drying. The use of high-speed centrifugal spray dryer for the drying of alumina powder can effectively improve the quality and yield of products. In practical application, it is necessary to select the appropriate feeding amount, atomizer speed, hot air temperature and other parameters according to the properties and production requirements of alumina powder to ensure the best drying effect. At the same time, it is necessary to pay attention to the maintenance and maintenance of the equipment to ensure the stable operation of the equipment.
V. Conclusions. As an efficient and energy-saving drying equipment, high-speed centrifugal spray dryer has a wide range of application prospects in the preparation process of alumina powder. Understanding the working principle, equipment structure and operation points of high-speed centrifugal spray dryer will help to better play its role in industrial production. In the future, with the continuous progress of technology and the improvement of application requirements, the performance and function of high-speed centrifugal spray dryer will be further optimized and improved.