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中南大学学报(自然科学版)

Journal of Central South University

第42卷    第4期    总第200期    2011年4月

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文章编号:1672-7207(2011)04-1140-05
湖南某地页岩成分及物理性能分析
夏辉,刘辉,周克省,李宏建

(中南大学 物理科学与技术学院,湖南 长沙,410083)

摘 要: 针对湖南省某地有储量巨大的铁质页岩原矿,为有效利用该矿产资源,用X线衍射仪、电感耦合等离子体发射光谱仪(ICP-AES)、红外光谱仪、防护热板导热系数测量装置、辐射仪对页岩成分和物理性能进行检测分析,研究2种焙烧工艺参数下的页岩烧胀性。研究结果表明:该页岩含有绿泥石、高岭石、蒙脱石和绢云母等多种层状硅酸盐矿物及Al,Fe,Mg,K和Na多种金属元素,在中远红外波段具有较高的反射率,烧胀性良好,其涂层的导热系数为0.045 W/(m·K),内、外照射系数分别为0.27 和0.69;该页岩在建筑陶粒材料、保温隔热涂料等方面具有广阔的应用前景。

 

关键字: 页岩;层状硅酸盐;陶粒;红外反射;导热系数

Analysis on component and physical properties of shale in Hunan
XIA Hui, LIU Hui, ZHOU Ke-sheng, LI Hong-jian

School of physics science and technology, Central south university, changsha 410083, China

Abstract:It has huge reserves of iron-shale in Hunan Province. The physical properties of the shale were analyzed by XRD, inductively coupled plasma atomic emission spectrometer (ICP-AES). The baking swell properties, far-infrared reflectivity and thermal conductivity of shale coating also were tested. The radioactivity of shale was detected by H-90Bγ Radiometer. The results show that the shale contains chlorite, kaolinite, smectite, sericite and other layered silicate minerals and Al, Fe, Mg, Na as well as other elements. Reflectance of the shale is more than 85% in the far-infrared range. The low-thermal conductivity (0.045 W/(m·K)) shows good thermal insulating properties of the shale materials. Internal and external exposure indexes are 0.27 and 0.69, respectively, access to the A-level of radiation health protection standards for construction materials, and the shale can be used as raw materials for haydite.

 

Key words: shale; layered silicate; haydite; infrared- reflectance; thermal conductivity

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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