硅线石及其尾矿利用研究

Research on Sillimanite and Applications of Its Tailings

硅线石属于蓝晶石族高铝矿物,它是一种十分重要的非金属矿物原料。硅线石可以在1545℃时不可逆转化成莫来石和Si O2(方石英),这就是硅线石的莫来石化行为。此固相反应不仅可以合成莫来石瓷,而且相变过程中产生的体积效应可以被用于材料的增韧。本文介绍了硅线石陶瓷化及其应用,并简要介绍了材料制备的工艺。硅线石选矿提纯因工艺不精,得到精矿后的尾矿中硅铝含量依旧很高。因此,对于硅线石尾矿的利用研究意义重大。本文综述了硅线石尾矿的几种应用实例,并简述了硅线石尾矿利用的重要性。

Sillimanite,as a high aluminum mineral of cyanite minerals,is a kind of important nonmetallic mineral raw materials.Sillimanite can irreversibly translate into mullite and cristobalite at 1545 ℃,namely the mullitization of sillimanite.This solid-phase reaction can synthesize mullite porcelain,and the volume effect generated in phase transition process can also be used in toughening materials.Ceramization of Sillimanite and some applications are listed in this paper,and preparation process of materials is also introduced in brief.As purification process of sillimanite is not perfect,silicon aluminium content in tailings we achieved after collecting concentrates is still high.Therefore,study on the use of sillimanite tailings is very important.In this paper,we summarized several application cases,and introduced the importance of the utilize of sillimanite tailings.