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| EXPERIMENTAL STUDY OF PORE EVOLUTION LAW DURING DISSOLUTION-RECRYSTALLIZATION FOR GLAUBERITE |
| LIU Zhonghua1，2，HU Yaoqing1，XU Suguo1，LIANG Weiguo1，YANG Dong1，ZHAO Yangsheng1 |
| (1. Institute of Mining Technology，Taiyuan University of Technology，Taiyuan，Shanxi 030024，China； 2. College of Engineering and Technology，Shanxi Agricultural University，Taigu，Shanxi 030800，China) |
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Abstract The glauberite samples are scanned at various dissolution-recrystallization times by using the high-precision micro-CT test system μCT225KVFCB；and the evolution laws of dissolution-recrystallization are studied from the meso-scopic perspective with X-ray attenuation coefficient. The results show that in the dissolution-recrystallization process，the porosity of glauberite increases gradually；the total specific surface area decreases gradually；the mean pore diameter，the specific surface area of passage and the largest passage increase at first and then decrease. These results have great significance for the implementation and control of the in-situ dissolution mining of glauberite deposits.
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Received: 18 June 2010
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2011, Vol. 30 
