赤泥中含铝矿物特征分析及回收试验研究

Characteristics analysis and Recovery test of aluminous minerals in Red mud

通过对赤泥进行全组分分析及矿物组成分析得出,赤泥中的铝主要以独立矿物的形式赋存于霞石、钙铝石、加藤石、一水软铝石、高岭石、钾长石、绿泥石中。矿物间共生关系复杂,相互包裹、连生。对赤泥开展反浮选脱硅选矿试验,得到三氧化二铝品位31.17%,铝硅比为3.38的铝精矿,三氧化二铝回收率为21.23%。

Through the analysis of the whole composition and mineral composition of the red mud.It is concluded that the aluminum in the red mud mainly occurs in the form of independent minerals in nepheline,almandine,katanite,boehmite,kaolinite,K-feldspar and chlorite.The intergrowth relationship between minerals is complex,and they are mutually wrapped and connected.Carry out reverse flotation desilication beneficiation test on red mud,and obtain aluminum concentrate with aluminum oxide grade of 31.17%,aluminum silicon ratio of 3.38,and aluminum oxide recovery of 21.23%.