COPPER(II) EXTRACTION FROM AMMONIA LEACH SOLUTION

COPPER(II) EXTRACTION FROM AMMONIA LEACH SOLUTION
复制标题

从氨浸溶液中提取铜(II)

DOI：
--
复制
发表时间：
2014
期刊：
影响因子：
--
通讯作者：
Katarzyna Wejman
Katarzyna Wejman
中科院分区：
--
文献类型：
--
作者：
Katarzyna Ochromowicz;Magdalena Jeziorek;Katarzyna Wejman

文献摘要

被引文献

相似文献

含铜材料（矿石、精矿、副产品）的湿法冶金处理通常采用酸浸或氨浸。在浸出原料含有大量碳酸盐岩和铁矿物的情况下，由于较高的工艺选择性，第二种方法是优先的。然而，考虑到在随后的提取过程中可能发生的氨转移，这也可能是有问题的。本文介绍了从氨浸液中提取铜（II）的实验结果。研究了萃取剂种类、萃取剂浓度和有机相稀释剂种类对萃取效率和氨转移的影响。考察了LIX 84-I、LIX 984N、LIX 54-100等几种工业萃取剂。结果清楚地表明，在以羟基肟为萃取剂的萃取体系中，萃取效率显著高于β-二酮试剂。目前的研究证明，Cu（II）的萃取效率也取决于稀释剂的类型，并且对非脂肪族稀释剂的系统不利。观察到氨共萃取的发生，并取决于所检测的参数。对负载有机相的洗涤结果表明，用硫酸溶液双重洗涤几乎可以完全去除氨。
Hydrometallurgical processing of copper-bearing materials (ores, concentrates, by-products) is usually done with the use of acidic or ammonia leaching. In the case where a leaching feed material contains significant amounts of carbonate rocks and iron minerals the second method is preferential due to a higher process selectivity. However, it can also be problematic considering possible ammonia transfer during the subsequent extraction process. The paper presents results of extraction of copper(II) from ammonia leach solutions. The effect of a type of extractant, its concentration and type of diluent in organic phase on extraction efficiency and ammonia transfer was studied. A few commercial extractants were examined, namely LIX 84-I, LIX 984N, LIX 54-100. The results clearly indicate that in the case of extraction systems using hydroxyoximes the extraction efficiency is remarkably higher than for β- diketone reagent. Presented studies proved that extraction efficiency of Cu(II) is also dependent on the type of diluent and is less favourable for systems with non-aliphatic diluents. It was observed that ammonia co-extraction occurs and depends on examined parameters. Scrubbing of loaded organic phase showed that ammonia can be removed almost completely using double wash with sulfuric acid solution.