CAJ | 학술논문

为了分析浮选前后神东低阶煤表面矿物组成、赋存形态及表面官能团的变化，采用 X-射线衍射(XRD)、扫描电子显微镜(SEM)和傅里叶变换红外光谱(FTIR)等表面分析方法对浮选前后样品的表面性质进行了表征分析。结果表明，原煤中存在的矿物质为石英石、高岭石、白云母、斜绿泥石、蒙脱石和黄铁矿等，浮选精煤中残留的矿物质主要是石英石和高岭石；原煤表面粗糙并存在裂隙和凹陷，附着有大量的微细煤粒和异质细泥，精煤表面较为平整且附着有少量的微细颗粒，尾煤表面粘附有较多的微细粒层状或片状的矿物质；煤粒表面的含氧官能团以羟基(-OH)和羰基(C＝O)为主，主要在精煤表面赋存，成灰矿物质多存在于尾煤表面。
위료분석부선전후신동저계매표면광물조성、부존형태급표면관능단적변화，채용 X-사선연사(XRD)、소묘전자현미경(SEM)화부리협변환홍외광보(FTIR)등표면분석방법대부선전후양품적표면성질진행료표정분석。결과표명，원매중존재적광물질위석영석、고령석、백운모、사록니석、몽탈석화황철광등，부선정매중잔류적광물질주요시석영석화고령석；원매표면조조병존재렬극화요함，부착유대량적미세매립화이질세니，정매표면교위평정차부착유소량적미세과립，미매표면점부유교다적미세립층상혹편상적광물질；매립표면적함양관능단이간기(-OH)화탄기(C＝O)위주，주요재정매표면부존，성회광물질다존재우미매표면。
In order to analysis the changes of surface mineral composition,occurrence and functional groups of Shendong low rank coal before and after flotation,the surface properities of the samples have been analyzed by X-ray diffraction,Scanning Electron Microscope and Fourier Transform Infrared Spectroscopy.The results indicated that the minerals presented in raw coal were quartz,kaolinite,muscovite,clinochlore,montmorillonite and pyrite.The residual miner-als in concentrate were quartz and kaolinite.With the presence of fissure and hollow,the surface of raw coal was crude and associated with lots of fine coals and tiny slimes.The surface of concen-trate was smooth and associated with little fine particles.However,there were numerous fine laminar or schistous minerals attached to the surface of tailing.The major oxygen-containing functional groups of raw coal were hydroxyl (- OH)and carbonyl (C= O),which also mainly presented on the surface of concentrate.The ash-forming minerals were presented on the surface of tailing.