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热力学分析和从已耗尽的催化剂的铁残留中提取有价值的组件的应用

Longfei Shi¹, Baozhong Ma¹, Zhihe Cao¹

¹State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China; School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China.

Waste management (New York, N.Y.)

|August 14, 2023

概括

一种新的方法可以有效地从铁残留物 (IPR) 中提取Ni,Co,V,Mo和W等贵金属,这是一种经过催化剂处理的固体废物. 这种绿色过程指导着类似的固体废物管理.

科学领域:

材料科学材料科学材料科学
环境化学环境化学
金工程金工程金工程

背景情况:

使用过的催化剂产生固体废物,称为铁残留物 (IPR).
IPR含有贵重金属 (Ni,Co,V,Mo,W) 和,以及二氧化.
开发有效的IPR处理方法对于资源回收和废物管理至关重要.

研究的目的:

为了研究铁残留物 (IPR) 的组成.
开发和优化一种高效和环保的方法,从知识产权中提取贵金属.
了解漏机制,以优化回收过程.

主要方法:

使用XRD,XPS和FTIR进行IPR的表征.
评估了包括HCl和NaOH在内的大气漏策略,基于E-pH图.
优化HCl出参数:温度,时间,度和液体/固体比.

主要成果:

IPR的组成包括FePO4·2H2O,Fe3(PO4) 2·3H2O,Fe5(PO4) 4(OH) 3·2H2O,SiO2以及贵金属.
在90°C下180分钟浸出HCl,用5mol/L HCl和8:1mL/g的比率提取了95%的Fe,Ni,Co,V,Mo,76.9%的W和89.3%的P.
(SiO2) 在漏残留物中有效地缩,促进了有价值的组件分离.

结论:

为了从IPR中回收有价值的组件,开发了一种高效和绿色的大气HCl出过程.
该研究提供了重要的指导,用于管理类似的固体废物流,从耗尽的催化剂处理.
获得了贵金属和的高提取效率,在残留物中进行了缩.

关键词:

大气中的漂水.E-pH 图表的图表提取提取提取铁残留物铁残留物使用过的催化剂.

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