Aim To prepare nano-Aluminum trihydrate (ATH) in the RPB (Rotating Packed Bed). Methods Industrial ATH was used as raw materials for the preparation of sodium aluminate. By means of Liquid phase precipitation by carbonation
ultrafine ATH was prepared successfully in the high gravity reactor(rotating packed bed). Results The particle size of the ultrafine ATH is below 50 nm. The properties of the product were investigated elementarily with TG
XRD and TEM. Conclusion The RPB can be used as an ideal reactor for preparing nano-materials.