【摘要】 采用矿相学、X射线衍射分析方法对印尼某区铁矿石粉矿的矿物组成和粒间结构进行了分析。结果表明,粉矿中铁矿物相主要为磁铁矿,其次为褐铁矿,偶尔可见由含锰磁铁矿氧化分解形成的水锰矿及其脱水相。粉矿颗粒内部空隙非常发育,孔隙类型丰富多样,偏胶状"褐铁矿"是氧化带粉矿的重要铁矿物组成类型,粉矿颗粒内部空隙的组成部分主要为风化淋失孔洞、非穿透裂隙,其次为胶团聚集团粒的粒间孔、晶体裂理和解理缝隙等。进一步的X射线衍射分析显示,粉矿样品中除磁铁矿、针铁矿外,绿泥石、蛭石、浊沸石等也是粉矿的重要组成矿物。更多还原

【Abstract】 Mineral compositions and intergranular structures of iron ore fines in a certain area of Indonesia were analyzed using mineralogy and X-ray diffraction analysis methods.The results showed that the iron mineral phase in the fine ore is mainly magnetite, followed by limonite.Manganese-containing magnetite and its dehydrated phase formed by the oxidation and decomposition of manganese-bearing magnetite were occasionally seen.The internal voids of the fine ore particles were very developed, and the types of pores were rich and varied.The partial colloidal “limonite” was an important iron mineral composition type of the fine ore in the oxidation zone.The internal voids of the fine ore particles were mainly weathered leaching pores, non-penetrating cracks, followed by intergranular pores, crystal cracks and cleavage cracks of colloidal aggregates.Further X-ray diffraction analysis showed that in addition to magnetite and goethite in fine ore samples, chlorite, vermiculite, laumontite were also important constituent minerals of fine ore.更多还原