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热硫化条件下温度对黄铁矿结晶生长的影响
引用本文:寇大明,黄菲,杨大勇,李光禄,王岳松,谭伟,郭耀宇.热硫化条件下温度对黄铁矿结晶生长的影响[J].吉林大学学报(地球科学版),2010,40(1):104-108.
作者姓名:寇大明  黄菲  杨大勇  李光禄  王岳松  谭伟  郭耀宇
作者单位:东北大学,资源与土木工程学院,沈阳,110004;东北大学,资源与土木工程学院,沈阳,110004;东北大学,资源与土木工程学院,沈阳,110004;东北大学,资源与土木工程学院,沈阳,110004;东北大学,资源与土木工程学院,沈阳,110004;东北大学,资源与土木工程学院,沈阳,110004;东北大学,资源与土木工程学院,沈阳,110004
基金项目:国家自然科学基金项目(40872045);;内生金属矿床成矿机制研究国家重点实验室(南京大学)开放基金项目(12-06-03);;地质过程与矿产资源国家重点实验室(中国地质大学)开放课题(GPMR200906)
摘    要:模拟天然黄铁矿形成条件和基本过程,利用真空管式炉实验设备,通过热硫化法在250~410℃反应,实验考察不同温度条件下黄铁矿的结晶生长情况。运用扫描电镜、X射线粉晶衍射分析等手段,对实验产物形貌、物相结构特点等进行测试分析。结果表明:250~410℃时均可形成黄铁矿,但250~280℃时黄铁矿结晶程度较差;310~340℃时,可生长出部分晶面;360℃时黄铁矿生长成较为完好的晶体;380℃时黄铁矿结晶成立方体、八面体等自形晶;410℃时可形成结晶好、成分单一的黄铁矿。

关 键 词:热硫化  温度影响  黄铁矿  结晶生长

Temperature Influence on Pyrite Crystallization Growth Under Conditions of Thermal-Sulfurization
KOU Da-ming,HUANG Fei,YANG Da-yong,LI Guang-lu,WANG Yue-song,TAN Wei,GUO Yao-yu.Temperature Influence on Pyrite Crystallization Growth Under Conditions of Thermal-Sulfurization[J].Journal of Jilin Unviersity:Earth Science Edition,2010,40(1):104-108.
Authors:KOU Da-ming  HUANG Fei  YANG Da-yong  LI Guang-lu  WANG Yue-song  TAN Wei  GUO Yao-yu
Abstract:Natural conditions and formation process for pyrite were simulated. A laboratory vacuum tube furnace heater was used through the thermal curing process between 250℃ and 410℃. Responses were captured from the experimental study at different temperatures under the conditions of pyrite crystallization growth. Using the methods such as scanning electron microscope and X-ray diffraction analysis, the authors analyzed the pyrite in crystal form and structure. The results show that it is formed between 250℃ and 410℃, but it is low in degree of crystallization between 250℃ and 280℃. The partial crystal faces begin to grow between 310℃ and 340℃, and better crystal planes occur at 360℃. It has euhedral crystals that appear as cubes and octahedrons at 380℃. When it is 410℃, the pyrite crystallizes completely with a single composition.
Keywords:thermal sulfurization  temperature influence  pyrites  crystallization growth  
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