不同岩性机制砂石粉特性研究

Property Study of Rock Powder for Manufactured Sand with Different Lithology

该文通过选择片麻岩石粉、花岗岩石粉、玄武岩石粉和石粉石粉等4种机制砂石粉,研究了不同岩性石粉的粒度、化学成分、微观形貌和物相。结果表明,石灰石粉主要由含钙矿物组成,石灰石粉含有较高含量的MgO,片麻岩石粉和花岗岩石粉主要成分为SiO2和Al2O3;片麻岩石粉颗粒表面有许多层状、片状结构,颗粒表面有许多孔隙腔体结构,表面粗糙,玄武岩石粉,颗粒表面较光滑,花岗岩石粉有许多层状碎屑,石灰石粉表面较光滑;片麻岩石粉主要晶体矿物为石英、长石和绿泥石,玄武岩石粉的主要为长石和石英,花岗岩石粉含有钠长石和石英,石灰石粉为白云石。

This particle studies granularity,chemical composition,microstructure and phase of sand with different lithology,ranging from manufactured sand of gneiss,granite,basalt and limestone.The results show that limestone sand is mainly composed of calcium containing minerals,containing high content of MgO,and the main components of gneiss and granite powder are SiO2 and Al2 O3.There are many layered and sheet structures,and many cavity pore structures in rough surface of particle for gneiss sand,and many layered fragment on granite sand,smooth surface for both basalt and limestone sand.Main crystal minerals are quartz,feldspar and chlorite for gneiss powder,feldspar and quartz mainly for basalt powder,albite and quartz for granite powder,and dolomite for limestone.