空心液滴气泡:利用涂覆气泡群改进 ACORGA® M5640 对铜(II)萃取的简化原型初步研究

IF 4.8 2区 材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING
Diego Poblete , Claudio Leiva , María Sinche-Gonzalez , Claudio Acuña
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引用次数: 0

摘要

针对不同类型的铜矿,有两种定义明确的工艺。一种用于加工硫化铜,另一种用于加工氧化铜。这两种工艺有相似之处,尤其是在矿山开采(ROM)的准备阶段,如破碎。然而,在如何浓缩相关元素方面却存在着显著差异。浮选是最常用的浓缩工艺,利用气泡将硫化铜矿物与其他矿物分离。对于氧化物,在铜溶解后,溶剂萃取(SX)工艺是使用两种不相溶的液体分离铜的首选途径。溶剂萃取的一个研究方向是使用涂有溶剂的气泡从水溶液中萃取相关金属。空心液滴(HD)的概念源于建造一种设备,以产生可扩展到工业水平的连续气泡群。本文建造并运行了两个萃取柱:一个是概念验证柱,另一个是在煤油中使用 ACORGA® M5640(25% v/v)从 2.5 g L-1 的水溶液中萃取 Cu(II)的放大尝试。然而,在我们进行的原型放大试验中,回收率仅为 70%,这表明我们的色谱柱是有效的,但放大试验还需要对工艺的尺寸和流程进行更多的研究。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Hollow drop bubbles: A preliminary study of simplified prototype for improving copper(II) extraction with ACORGA® M5640 using coated bubble swarm

There are two well-defined processes for the types of copper ores. One for the processing of copper sulfides and another for the processing of the copper oxides. There are similarities between the two, particularly in the preparation stage of the run of mine (ROM) such as the crushing. However, significant differences exist in how to concentrate the elements of interest. Flotation is the most used concentration process to separate copper sulfide minerals from other minerals using air bubbles. For oxides, after the dissolution of copper, the solvent extraction (SX) process is the preferred path using two immiscible liquids to separate the copper.

A line of investigation for solvent extraction is the use of a bubble coated with solvent to extract the metal of interest from the aqueous solution, some devices have been built and tested for this purpose using different principles to generate a coated bubble swarm. However, those equipments have been tested on laboratory and have not been scaled up to an industry level.

The Hollow Drop (HD) concept was born from the idea of building a device to generate coated bubbles in a continuous swarm that could be scalable to an industry level. In this paper two columns were built and operated: a proof-of-concept column and a scale-up attempt for the extraction of Cu(II) fom an aqueous solution of 2.5 g L−1 using ACORGA® M5640 (25% v/v) in the Kerosene.

The results show that we could generate a bubble swarm and conduct the solvent extraction process at a 97% recovery using our proposed coated bubble generator. However, in our scaled prototype test only a 70% recovery was achieved, which shows that our column is working but the scaling-up needs more investigation regarding the dimensions and flows of the process.

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来源期刊
Hydrometallurgy
Hydrometallurgy 工程技术-冶金工程
CiteScore
9.50
自引率
6.40%
发文量
144
审稿时长
3.4 months
期刊介绍: Hydrometallurgy aims to compile studies on novel processes, process design, chemistry, modelling, control, economics and interfaces between unit operations, and to provide a forum for discussions on case histories and operational difficulties. Topics covered include: leaching of metal values by chemical reagents or bacterial action at ambient or elevated pressures and temperatures; separation of solids from leach liquors; removal of impurities and recovery of metal values by precipitation, ion exchange, solvent extraction, gaseous reduction, cementation, electro-winning and electro-refining; pre-treatment of ores by roasting or chemical treatments such as halogenation or reduction; recycling of reagents and treatment of effluents.
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