Cleaner recovery of multiple valuable metals from cyanide tailings via chlorination roasting

Hailin Long; Haoyu Li; Jiannan Pei; C. Srinivasakannan; Shaohua Yin; Libo Zhang; Aiyuan Ma; Shiwei Li

doi:10.1080/01496395.2020.1812650

Cleaner recovery of multiple valuable metals from cyanide tailings via chlorination roasting

Hailin Long
, Haoyu Li
, Jiannan Pei
, C. Srinivasakannan
, Shaohua Yin
, Libo Zhang
, Aiyuan Ma
, Shiwei Li

Chemical and Petroleum Engineering

Research output: Contribution to journal › Article › peer-review

22 Scopus citations

Abstract

Recovery of valuable metals is hindered by sulfur in cyanide tailings. In this work, a process for the clean recovery of multiple valuable metals through chlorination roasting was proposed. HSC software was used to find that the process of dissociation of chlorides is further accelerated by sulfur in the tailings. Experiments were carried out to study temperature variables and chlorinated agent variables. The optimum conditions were identified to be a CaCl₂ dosage of 4%, roasting temperature of 1323 K, achieved maximum recovery of 84% of Au, 71% of Ag, 72% of Cu, 92% of Pb, and 69% of Zn.

Original language	British English
Pages (from-to)	2113-2123
Number of pages	11
Journal	Separation Science and Technology (Philadelphia)
Volume	56
Issue number	12
DOIs	https://doi.org/10.1080/01496395.2020.1812650
State	Published - 2021

Keywords

Cyanide tailings
simultaneous recycling
thermodynamics research
valuable metals

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10.1080/01496395.2020.1812650

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title = "Cleaner recovery of multiple valuable metals from cyanide tailings via chlorination roasting",

abstract = "Recovery of valuable metals is hindered by sulfur in cyanide tailings. In this work, a process for the clean recovery of multiple valuable metals through chlorination roasting was proposed. HSC software was used to find that the process of dissociation of chlorides is further accelerated by sulfur in the tailings. Experiments were carried out to study temperature variables and chlorinated agent variables. The optimum conditions were identified to be a CaCl2 dosage of 4\%, roasting temperature of 1323 K, achieved maximum recovery of 84\% of Au, 71\% of Ag, 72\% of Cu, 92\% of Pb, and 69\% of Zn.",

keywords = "Cyanide tailings, simultaneous recycling, thermodynamics research, valuable metals",

author = "Hailin Long and Haoyu Li and Jiannan Pei and C. Srinivasakannan and Shaohua Yin and Libo Zhang and Aiyuan Ma and Shiwei Li",

note = "Funding Information: This work was supported by National Natural Science Foundation of China (51604135), Liupanshui Key Laboratory of Metallurgical Energy Saving, Environmental Protection and Recycling Economy (52020-2018-0304), the Science and Technology Innovation Group of Liupanshui Normol University (LPSSYKJTD201801) and the Key cultivation disciplines of Liupanshui Normol University (LPSSYZDPYXK201708). Publisher Copyright: {\textcopyright} 2020 Taylor \& Francis Group, LLC.",

year = "2021",

doi = "10.1080/01496395.2020.1812650",

language = "British English",

volume = "56",

pages = "2113--2123",

journal = "Separation Science and Technology (Philadelphia)",

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TY - JOUR

T1 - Cleaner recovery of multiple valuable metals from cyanide tailings via chlorination roasting

AU - Long, Hailin

AU - Li, Haoyu

AU - Pei, Jiannan

AU - Srinivasakannan, C.

AU - Yin, Shaohua

AU - Zhang, Libo

AU - Ma, Aiyuan

AU - Li, Shiwei

N1 - Funding Information: This work was supported by National Natural Science Foundation of China (51604135), Liupanshui Key Laboratory of Metallurgical Energy Saving, Environmental Protection and Recycling Economy (52020-2018-0304), the Science and Technology Innovation Group of Liupanshui Normol University (LPSSYKJTD201801) and the Key cultivation disciplines of Liupanshui Normol University (LPSSYZDPYXK201708). Publisher Copyright: © 2020 Taylor & Francis Group, LLC.

PY - 2021

Y1 - 2021

N2 - Recovery of valuable metals is hindered by sulfur in cyanide tailings. In this work, a process for the clean recovery of multiple valuable metals through chlorination roasting was proposed. HSC software was used to find that the process of dissociation of chlorides is further accelerated by sulfur in the tailings. Experiments were carried out to study temperature variables and chlorinated agent variables. The optimum conditions were identified to be a CaCl2 dosage of 4%, roasting temperature of 1323 K, achieved maximum recovery of 84% of Au, 71% of Ag, 72% of Cu, 92% of Pb, and 69% of Zn.

AB - Recovery of valuable metals is hindered by sulfur in cyanide tailings. In this work, a process for the clean recovery of multiple valuable metals through chlorination roasting was proposed. HSC software was used to find that the process of dissociation of chlorides is further accelerated by sulfur in the tailings. Experiments were carried out to study temperature variables and chlorinated agent variables. The optimum conditions were identified to be a CaCl2 dosage of 4%, roasting temperature of 1323 K, achieved maximum recovery of 84% of Au, 71% of Ag, 72% of Cu, 92% of Pb, and 69% of Zn.

KW - Cyanide tailings

KW - simultaneous recycling

KW - thermodynamics research

KW - valuable metals

UR - https://www.scopus.com/pages/publications/85089968296

U2 - 10.1080/01496395.2020.1812650

DO - 10.1080/01496395.2020.1812650

M3 - Article

AN - SCOPUS:85089968296

SN - 0149-6395

VL - 56

SP - 2113

EP - 2123

JO - Separation Science and Technology (Philadelphia)

JF - Separation Science and Technology (Philadelphia)

IS - 12

ER -

Cleaner recovery of multiple valuable metals from cyanide tailings via chlorination roasting

Abstract

Keywords

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