Process of the Seed Decomposition in the Sandy Alumina Production by Bayer Process

Seed decomposition is an important process in alumina production by Bayer Process,and it directly affects on the output and quality of alumina.Currently,one-stage decomposition process of Pechiney and two-stage decomposition process of Alcoca are two kinds of processes in sandy alumina production.Contrasts of the two processes have been done in the article by combining the decomposition process designed and investment situation.