论文部分内容阅读
对太平洋中部深海粘土中的稀土元素赋存状态进行了表征,同时还研究了H2SO4溶液浸出稀土工艺,考察了H2SO4浓度、浸出时间、液固比、浸出温度等因素对深海粘土中Y浸出率的影响。研究结果表明:深海粘土主要由粘土、沸石、磷灰石等组成,稀土元素主要赋存于磷灰石中;Y的最佳浸出工艺条件为:H2SO4浓度为1 mol·L-1,浸出温度为40℃,浸出时间为60 min,液固比为4∶1,Y的浸出率为84.38%。
The rare earth elements in deep-sea clay in central Pacific Ocean were characterized and the rare earth leaching process was also studied. The effects of H2SO4 concentration, leaching time, liquid-solid ratio, leaching temperature and other factors on the leaching rate of Y in deep-sea clay influences. The results show that the deep-sea clay mainly consists of clay, zeolite, apatite, and rare-earth elements mainly in apatite. The optimum conditions for the extraction of Y are H2SO4 concentration of 1 mol·L-1, leaching temperature 40 ℃, leaching time 60 min, liquid-solid ratio 4:1, Y leaching rate 84.38%.