The production process of calcined alumina micropowder uses industrial aluminum hydroxide or industrial alumina as raw materials, and is calcined at appropriate temperature to form a stable crystal form α- Type alumina products; To calcine α- Alumina micropowder made from type A alumina through ball milling. High temperature calcined alumina powder products have a high melting point, excellent mechanical strength, hardness, high resistivity, and thermal conductivity. It can be widely used in industries such as electronic equipment, structural ceramics, refractory materials, wear-resistant materials, polishing materials, etc.

After a certain amount of calcined alumina micropowder production process, the emergence of high-temperature alumina micropowder was achieved. Therefore, this process is very important. On the basis of the production process, we can carry out a series of operations. The following is about the production process of high calcined alumina micropowder: first, the alumina is calcined for a certain time, and then it is input into the tail of the kiln using wind power to ensure that the tail end of the kiln body used has a certain inclination, And it requires a slow rotary motion, and then cover the kiln head to proceed with the next work. During processing, clean flames are sprayed into the kiln using a spray gun to achieve the purpose of dehydration and calcination of the powder. After this series of treatment, the aluminum oxide powder will roll along the inclined rotary kiln body, and the entire process is gradually completed. After further cooling and screening, the final product can be obtained. The production process of calcined alumina micropowder from different manufacturers is different, and in many cases, we cannot directly copy the situation elsewhere. It needs to be determined based on our actual situation to better meet our production needs.
The high-temperature calcined aluminum oxide powder products produced by the production process of calcined alumina micropowder are mainly divided into five categories according to the mineralizer formula: boron fluoride (BF2:1), boron fluoride (BF5:1), pure fluoride (F), pure boron (B), and non mineralizer. There are also special types of alumina such as boron chloride (BL) and fluorine chloride (FL); Alumina micropowder products are divided into 325 mesh, 500 mesh, 600 mesh, and 800 mesh micropowders, as well as fine-grained micropowders. According to different usage needs, five series of products have been formed, including dry pressing and isostatic pressing process series, hot pressing casting and injection molding series, refractory material series, casting shaping series, and alumina structural ceramic granulation powder.
The production process of calcined alumina micropowder requires the preparation of alumina products with different crystal forms, and the corresponding precursor aluminum hydroxide needs to be prepared first. Every parameter in the preparation process has an impact on the product properties, including solution concentration, temperature during the gelation process, pH value, material addition method, residence time, water amount during washing, temperature, pH value, drying, molding, roasting, etc.