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大洋多金属结核高压低质量分数碱浸过程中sio2溶出行为
Authors
冯雅丽
刘鹏伟
+5 more
吴梦妮
李洪珊
李浩然
袁飞
郭成林
Publication date
1 January 2016
Publisher
Abstract
为提高综合利用率,对大洋多金属结核碱浸进行预处理研究,考察大洋多金属结核高压低质量分数碱浸过程中Na OH初始质量分数、反应温度、液固比、浸出时间等因素对SiO_2溶出影响,并对高压碱浸脱硅动力学进行研究。研究结果表明:在浸出温度为180℃、质量分数为10%Na OH溶液、液固比为3.0:1.0条件下反应70 min,可制得118.51 g/L的Na2Si O3溶液,其余Na2Si O3以方沸石(Na(Si2Al)O6?H2O)形式析出,SiO_2高压浸出反应的表观活化能为50.08 k J/mol,遵循化学反应控制的收缩核模型。通过高压低质量分数碱浸可选择性浸出其中的SiO_2,并生成有良好..
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Institutional Repository of Institute of Process Engineering, CAS (IPE-IR)
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oai:ir.ipe.ac.cn:122111/35082
Last time updated on 05/12/2019
Institutional Repository of Institute of Process Engineering, CAS (IPE-IR)
See this paper in CORE
Go to the repository landing page
Download from data provider
oai:ir.ipe.ac.cn:122111/35080
Last time updated on 05/12/2019