The Special Effect of a New Additive during Bayer Process Digestion of A/S5～7 Bauxite

A brief introduction to the characteristic of our country is made in this paper.And it is mainly analysed that using a type of A/S:5～7 water-bauxite to produce alumina was technically schemed.When the bauxite was used to produce alumina with the simplest pure Bayer process,an unprecedented and best effect of digest has been obtained as the new additive of digest added.The major condition and effects of digest is listed here.