紫金山金铜矿明矾石的化学成分特征及其综合开发利用

摘要

本论文以紫金山金铜矿中脉石矿物明矾石为主要研究对象,在野外地质调查工作的基础上,通过岩相学、矿相学的系统研究对明矾石的矿物学特征有了系统了解,重点通过电子探针对明矾石的化学成分特征系统研究,得出紫金山金铜矿中的明矾石矿物化学成分相对理论值具有低K、S而高Al的主量元素和富Cu、Ga、As等微量元素特征,且不同形态的明矾石具有不同的矿物化学组成.作为钾资源开发利用的明矾石可采取分采分选开发工艺进行开发利用,其中的稀有金属Ga具有伴生元素工业利用前景,其中的Cu也可作为低品位铜矿石利用,其中的As必须进行特定的选矿工艺进行处理.%Alunite,which is the gangue mineral of Zijin gold-copper deposit,is the main object of study in this paper. On the basis of the field geological survey work,the mineralogical characteristics of alunite has been studied by systematic work of petrography and mineragraphy and chemical compositions of alunite has been researched systematically on application of electron microprobe, we obtain that the chemical composition of alunite of Zijin gold-copper deposit is of the characteristics that much lower K,S and higher Al in major elements and higher Cu,Ga and As in trace elements compared with theoretical value, and different forms of alunite is is of different chemical composition. Alunite,as is a kind of potassium resource, can be exploited in sorting development process. And,Ga,which is a rare element,has has some prospects in industrial application as associated elements. Besides, Cu can be exploited as a kind of low-grade Copper ores.