淮北闸河矿区高岭岩特征及其利用途径

Distinctive properties and utilization way of kaolinite in Zhahe mining area, Huaibei

摘要: 用差热、X射线衍射及红外光谱等方法,对淮北闸河矿区下石盒子组底部5^#、6^#煤层间一层高岭岩矿层进行了研究。结果表明:矿层平均厚3.8m,矿石几乎全部是由高岭石组成的单矿物岩,有益组分Al₂O₃含量一般在36%~39%;主要有害组分Fe₂O₃含量变化在0.78%~1.71%之间;TiO₂含量多在0.4 9%~0.97%。为矿物组成纯净,有益组分含量高但有害组分亦较高的高岭岩。这种岩石是生产化工产品,以及煅烧高岭土的良好原料。

Abstract: It is studied that a kaolinite bed located between No.5 and No.6 coal seams at the bottom of Xiashihezi Formation in Zhahe mining area,Huaibei,by means of differential thermal analysis,X-ray diffractogram,infrared spectroscopic analysis.The study results show that this kaolinite bed consists of roughly pure kaolinite mineral ores with average depth of 3.8 m,in which the content of Al₂O₃ is generally 36%-39%,but Fe₂O₃ is 0.78%-1.71%,TiO₂ is 0.49%-0.97%.It is proved that this kind of kaolinite can be favorably used for making chemical products and calcining kaoline.