黔西北某地伴生多金属低品位铁矿工艺矿物学研究

Study on Technological Mineralogy of Associated Polymetallic Lowgrage Iron Ore in Northwestern of Guizhou Province

以化学分析、化学物相分析、透反射显微镜及EPMA为主要研究手段,对黔西北某地伴生多金属低品位铁矿的工艺矿物学特征进行了详细研究。该区含矿岩石为一套以火山成因为主的火山碎屑岩,矿石中有价元素除铁外,伴生有钛、铜、镓、铌等。载铁矿物工艺矿物学研究结果表明,矿石中铁主要以褐铁矿形式存在,与粘土矿物常常混杂出现,分布不均,团块大小差异也大,矿物间的嵌布关系复杂,提示依靠传统物理选矿难达到有用矿物的富集。除褐铁矿外,矿石中存在少量硅铁钛金属互化物。

Associated polymetallic lowgrage iron ore produced in Northwestern of Guizhou was studied in views of the features of technical mineralogy using the chemical analysis, chemical phase analysis, pol-microscope and EPMA as the main research method. The ore are mainly for a set of pyroclastie rocks, aside from iron in which there are some associated valuable elements include titanium, copper, gallium and niobium etc. The results of technical mineralogy study show that the iron of ore mainly exist in limonite and appear as a mixture with clay mineral, and furthermore, which distribution is uneven and mass size is difference also. Because of the complex embedded relationship between different minerals hint that only depend on traditional physical dressing is difficult to achieve the enrichment of valuable mineral. In addition to the limonite, there are small amounts of intermetallic compound in ore.