Polyaluminium Chloride PAC, CAS NO. 1327-41-9 ,is inorganic salt, it is used as flocculant or coagulant for waste water and drinking water treatment. According to the manufacturing process, Polyaluminium Chloride PAC has two types : spray dried and roller dried. Polyaluminium Chloride PAC Spray dried is produced by spray dried tower. And Polyaluminium Chloride PAC roller dried used hot roller for heating PAC liquid.Pls check the following two pictures.
PAC SPRAY DRIED TOWER
PAC ROLLER DRIED WORKSHOP
Besides this , Polyaluminium Chloride PAC Spray dried and Roller dried also have the following differences :
1.Appearance :
PAC Spray dried : white ,yellow or brown powder
PAC Roller dried: yellow or brown granular
2.Raw materials
PAC Spray dried : Mainly Al(OH)3 Aluminum hydroxide
PAC Roller dried: Mainly bauxite
3.Basicity
Polyaluminium Chloride PAC Spray dried : 50-90
Polyaluminium Chloride PAC Roller dried: 90-110
