为了深入研究硼矿碱法浸出过程,以700℃焙烧后的宽甸含硼尾矿为原料,基于缩核模型,推导了矿样中的硼在NaOH溶液中进行碱解反应的动力学方程,并以原料进行碱解实验,根据实验结果对理论推导的动力学方程进行拟合与验证.研究表明:实验条件下硼的碱解反应过程符合缩核模型,硼在碱解反应过程中的动力学方程为t-42.4954[(1-X)-13+1/3ln(1-X)-1]+0.0338[(1X)-23-1],其动力学过程主要受扩散控制,升高溶液温度、提高NaOH溶液浓度及降低矿样粒度均有利于碱解时间缩短,反应尽快完成.动力学研究为硼矿的碱法处理应用奠定了初步的理论基础.
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