四川某含钛、稀土黏土矿工艺矿物学研究*

以四川某含钛、稀土黏土矿为研究对象，采用化学分析、显微镜鉴定、X射线衍射分析、MLA矿物自动分析等手段进行了详细工艺矿物学研究。结果表明，该黏土矿中含大量高岭石（78.393%），其次为绿泥石（14.466%）和一水硬铝石（3.266%）；钛矿物以锐钛矿（2.432%）为主，少量钛铁矿，极少量榍石；稀土矿物含量较少，主要为氟碳铈矿、磷铝铈矿，极少量独居石。嵌布特征表明，锐钛矿结晶程度差，大部分蚀变为白钛石，而且嵌布粒度微细，可选性差，难以通过物理选矿方法有效分离。

Study on Process Mineralogy of a Titanium- and Rare Earth Elements-bearing Clay Ore from Sichuan

For the titanium- and rare earth elements-bearing clay ore from Sichuan, chemical analysis, microscopic identification, X-ray diffraction analysis and MLA mineral automatic analysis were employed to investigate its detailed process mineralogy. The results showed that the clay deposit contained a large amount of kaolinite (78.393%), followed by chlorite (14.466%) and diaspore (3.266%). Titanium minerals were mainly anatase (2.432%), a small amount of ilmenite, and a very small amount of titanite. Rare earth minerals content was relatively low, mainly of bastnasite, fluorencite, and a very small amount of monazite. The dissemination characteristics showed that anatase had poor crystallization degree, and most of them turned into leucoxene. Besides, its dissemination size was micro-grained with low beneficiability. Thus, it is difficult to separate it by physical separation methods.