Acid-free ultrasonic-enhanced hydrothermal leaching of copper and zinc from polymetallic sulfide secondary concentrates

IF 9 1区工程技术 Q1 ENGINEERING, CHEMICAL

Separation and Purification Technology Pub Date : 2025-08-09 DOI:10.1016/j.seppur.2025.134701

Qingfeng Liu, Yalong Liao, Min Wu, Xiaobao Jia

{"title":"Acid-free ultrasonic-enhanced hydrothermal leaching of copper and zinc from polymetallic sulfide secondary concentrates","authors":"Qingfeng Liu, Yalong Liao, Min Wu, Xiaobao Jia","doi":"10.1016/j.seppur.2025.134701","DOIUrl":null,"url":null,"abstract":"<div><div>Due to the co-associated presence of copper, iron, lead and zinc, and the high content of iron and lead contained in complex polymetallic sulfide secondary concentrate (CPSSC), the recovery efficiency is low and the economic and technical index is poor when the traditional process is performed to extract valuable metals from this kind of materials. In this paper, a novel leaching process with ultrasonic reinforcement under oxygen pressurization and hydrothermal condition without acid is proposed, and the regulation mechanism of selective leaching of copper and zinc and inhibiting leaching of iron is studied. The obtained results show that ultrasonic enhanced hydrothermal leaching process can achieve the selective leaching under mild conditions, and promote the hydrolysis and precipitation of iron ions in the leaching solution, and under the optimal conditions, the leaching efficiency of copper and zinc reach 99.88% and 99.68% respectively, while the leaching efficiency of iron is only 11.37%.</div></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"378 ","pages":"Article 134701"},"PeriodicalIF":9.0000,"publicationDate":"2025-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Separation and Purification Technology","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1383586625032988","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}

引用次数: 0

Abstract

Due to the co-associated presence of copper, iron, lead and zinc, and the high content of iron and lead contained in complex polymetallic sulfide secondary concentrate (CPSSC), the recovery efficiency is low and the economic and technical index is poor when the traditional process is performed to extract valuable metals from this kind of materials. In this paper, a novel leaching process with ultrasonic reinforcement under oxygen pressurization and hydrothermal condition without acid is proposed, and the regulation mechanism of selective leaching of copper and zinc and inhibiting leaching of iron is studied. The obtained results show that ultrasonic enhanced hydrothermal leaching process can achieve the selective leaching under mild conditions, and promote the hydrolysis and precipitation of iron ions in the leaching solution, and under the optimal conditions, the leaching efficiency of copper and zinc reach 99.88% and 99.68% respectively, while the leaching efficiency of iron is only 11.37%.

Abstract Image

查看原文本刊更多论文

无酸超声强化热液浸出多金属硫化物二次精矿中的铜锌

由于铜、铁、铅、锌共伴生存在，且复杂多金属硫化物二次精矿（CPSSC）中铁、铅的含量较高，采用传统工艺提取该类材料中的有价金属时，回收率低，经济技术指标差。本文提出了一种氧加压水热条件下无酸超声强化浸出新工艺，并研究了铜锌选择性浸出抑制铁浸出的调控机理。结果表明：超声强化水热浸出工艺在温和条件下可实现选择性浸出，并促进浸出液中铁离子的水解和沉淀，在最优条件下，铜和锌的浸出效率分别达到99.88%和99.68%，而铁的浸出效率仅为11.37%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Separation and Purification Technology 工程技术-工程：化工

CiteScore

14.00

自引率

12.80%

发文量

2347

审稿时长

43 days

期刊介绍： Separation and Purification Technology is a premier journal committed to sharing innovative methods for separation and purification in chemical and environmental engineering, encompassing both homogeneous solutions and heterogeneous mixtures. Our scope includes the separation and/or purification of liquids, vapors, and gases, as well as carbon capture and separation techniques. However, it's important to note that methods solely intended for analytical purposes are not within the scope of the journal. Additionally, disciplines such as soil science, polymer science, and metallurgy fall outside the purview of Separation and Purification Technology. Join us in advancing the field of separation and purification methods for sustainable solutions in chemical and environmental engineering.