Besides Al and Ga,the elements can be used also include REE,Nb,Li,Rb and V.The key scientific research item of Dressing/Bayer process of the state Ninth Five-year Plan resolves the problem of producing alumina by Bayer process with medium grade bauxite.

• 可利用元素 ,除已知的Al(氧化铝 )和Ga外 ,还有REE(稀土 )、Nb、Sc、Li,以及Rb和V。 国家“九五”重点科技攻关项目选矿 -拜耳法解决了利用中等品位铝矿石的拜耳法生产氧化铝问题。