With the steady progress achieved in the study of powder technology, s
cientists have come to realize that powder technology applies many sim
ilar basic process-unit operations. Chemical engineering has also foun
d its application in the field of powder technology. This paper intend
s to analyze the problems involved in the preparation of ultrafine pow
der from the point of view of chemical engineering and, based on this
analysis, the special characteristics, the chemical engineering proble
ms and their complexities, and the research fields of chemical enginee
ring will be pointed out.