Fractal characteristics of porous structure for in situ leachable sandtone uranium ore
The in situ leaching uranium is environmentally friendly mining technique that contains mining, mineral processing and metallurgical technology, in which the leaching solution is directly injected into underground ore bed and the useful metal or compound is obtained through reaction between solutions and minerals. The ore-bearing strata pore structure feature and ore rock particle distribution directly affect the leaching rate of useful components. In order to study the ore-bearing strata ore rock structure feature and its effect on in situ leaching uranium, based on analysis of mercury penetration test data of a certain uranium deposit with rock samples, several relative parameters are determined including porous radius size and distribution, porosity distribution. Using fractal theory, porous structure characteristics and variation of this ore-bearing and strata was analyzed, fractal characteristics of porous structure was discussed, and pore structure characteristics of this ore-bearing strata was further studied with scanning electron microscope. The results show that fractal characteristics of porous structure is regional, the fractal dimension can quantitatively describe heterogeneity of pore structure, the more the fractal dimension, the stronger the heterogeneity of porosity distribution, the more complicated the pore structure, and the less the porosity of ore rock. This is harmful for uranium leaching.
Zeng Sheng Tan Kai-xuan Qu Hui-qiong
School of Nuclear Resources and Nuclear Fuel Engineering , University of South China, Hengyang, 4210 School of Nuclear Resources and Nuclear Fuel Engineering , University of South China ,Hengyang, 4210
国际会议
International Mining Forum 2010(2010年国际采矿论坛 IMF 2010)
合肥
英文
209-212
2010-09-20（万方平台首次上网日期，不代表论文的发表时间）