桦甸油页岩的矿物学特征及重力分选富集

为了实现油页岩中油母质的分选富集，采用浮沉试验将桦甸油页岩原矿分成不同的密度级别，并借助XRD、XRF、SEM EDS和光学显微镜分析手段分析了原矿及各密度级别样品的化学组成和矿物学特征。结果表明，桦甸油页岩中的无机矿物主要包含石英、高岭石、蒙脱石、白云母、方解石和白云石。对于不同密度级别的油页岩样品，其密度越高，灰分越高，在低密度级别的油页岩中存在较高含量的油母质。采用重介质旋流器的重力分选方法可将高密度贫油母质部分抛除，得到含油率较高的富油母质产品，实现了油母质的分选富集。分选后的富油母质产品可用于干馏制油，贫油母质产品可用于发电或暂时封存。

Mineralogical Characterization and Gravity Separation of Huadian Oil Shale

The float and sink tests were carried out to separate the raw Huadian oil shale into a series of fractions according to density. The mineralogical characterization of the oil shale and its fractions was performed by using the analytical methods of XRF, XRD, SEM EDS and optical microscopy. The inorganic minerals of oil shale were mainly quartz, kaolinite, montmorillonite, muscovite, calcite and dolomite. The ash content of oil shale with different density fractions increased with the increase of density fraction. There was high content of kerogen in low density fraction of Huadian oil shale, and kerogen beneficiation from raw oil shale could be realized by using gravity separation method. After the separation of raw oil shale with dense medium cyclone, the rich kerogen products can be used for retorting to increase oil yield, and the poor kerogen products can be used for power generation or temporarily sealed.