J4 ›› 2010, Vol. 40 ›› Issue (1): 104-108.

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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   

  1. College of Resources and Civil Engineering, Northeast University, Shenyang 110004,China
  • Received:2009-09-15 Online:2010-01-26 Published:2010-01-26

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.

Key words: thermal sulfurization, temperature influence, pyrites, crystallization growth

CLC Number: 

  • P578.2
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