铀矿堆浸分形动力学模型

摘要

本文采用堆浸铀矿石粒径分布分维数代替其平均粒径，对M ellado等提出的矿石堆浸动力学模型进行了改进。同时采用铀矿柱浸试验确定了铀矿堆浸分形动力学模型参数与堆浸铀矿石粒径分布分维数的关系，建立了铀矿堆浸分形动力学模型，并进一步采用柱浸试验对模型进行了验证。结果表明，所建立的铀矿堆浸分形动力学模型能很好地反映铀矿堆浸铀金属浸出的规律。%By using fractal dimensions of the full particle size distribution instead of average particle size , the analytical models describing heap leaching of uranium ore which were presented by Mellado et al .were improved .Meanwhile ,the relationships between the model parameters of the fractal kinetic model for heap leaching of uranium ore and the fractal dimension of uranium ore were determined by column leaching experiments ,and then a fractal kinetic model for heap leaching of uranium ore was established ,and was further verified by column leaching experiments .The result shows that the fractal kinetic model can well reflect the law of uranium metal leaching of heap leaching of uranium ore .