镍钼矿氨性体系剪切强化浸出钼的宏观动力学研究Macroscopic Kinetic of Shear Enhanced Leaching of Molybdenum in Ammonia System from Nickel Molybdenum Ore
杨平,唐施阳,杨建英,杨建广
摘要(Abstract):
采用剪切强化氨性浸出工艺处理镍钼矿能同时获得较高的镍、钼浸出率,但浸出过程的动力学和机制尚不明确。研究了某镍钼矿氨高剪切强化氨浸钼的宏观动力学,并探讨了浸出机制。结果表明:镍钼矿高剪切强化氨浸钼的过程更符合Drozdov动力学模型,表观反应速率常数的对数ln k_m与1/T之间的关系式为ln k_m=-4 267/T+7.419,表观活化能为35.48 kJ/mol,反应受表面化学反应控制。
关键词(KeyWords): 镍钼矿;剪切强化;氨;浸出;宏观动力学
基金项目(Foundation): 湖南省高新技术产业科技创新引领计划项目(2021GK4004);; 广西重点研发项目(2021AB26076);; 湖南省重点研发计划项目(2022GK2009)
作者(Author): 杨平,唐施阳,杨建英,杨建广
DOI: 10.13355/j.cnki.sfyj.2023.04.009
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