鸡西煤的无机地球化学研究

鸡西煤田是东北地区重要的炼焦煤基地，由于受成煤环境的影响，原煤灰分较高，影响了煤炭精细加工利用和环境。采用Ｘ射线衍射、红外光谱等分析方法对鸡西煤的无机地球化学特征研究显示，煤中的主要矿物为石英、方解石、粘土矿物、黄铁矿和菱铁矿等，它们分别以不同的状态赋存于有机质中。煤灰的主要成分为ＳｉＯ２和Ａｌ２Ｏ３，其主要源自流水带入泥炭沼泽的石英和粘土等同生矿物。元素分析表明，煤中硫、磷及微量元素锗和镓等含量较低。

INORGANIC GEOCHEMISTRY OF COAL IN JIXI

The Jixi coalfield is an important coking coal base in the northeastern China. Because of the coal forming environment the ash content of most crude coal is high. It has brought problems with the refined processing, utilization of coals and the environment. With the methods of X ray diffraction and infrared spectrometry the inorganic geochemisal characteristics of the Jixi coals are studied. The minerals of the coals are minly quartz, calcite, clay minerals, pyrite and siderite. They occur in organic components in different states. The main ash compositions are SiO 2 and Al 2O 3. They originated the syngenetic minerals quartz and clay minerals that were brought into swamp by running water. The elements analyses indicate that the contents of sulphur, phosphorus, trace elements gallium and germanium are lower.