Selective extraction of valuable metals from spent EV power batteries using sulfation roasting and two stage leaching process

2021 ◽  
Vol 258 ◽  
pp. 118078
Author(s):  
Yongming Chen ◽  
Pengfei Shi ◽  
Di Chang ◽  
Yafei Jie ◽  
Shenghai Yang ◽  
...  
Keyword(s):  
Selective Extraction ◽  
Two Stage ◽  
Leaching Process ◽  
Valuable Metals ◽  
Sulfation Roasting

Environmentally benign process for selective recovery of valuable metals from spent lithium-ion batteries by using conventional sulfation roasting

2019 ◽  
Vol 21 (21) ◽  
pp. 5904-5913 ◽  
Author(s):  
Jiao Lin ◽  
Chunwei Liu ◽  
Hongbin Cao ◽  
Renjie Chen ◽  
Yongxia Yang ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Environmental Risk ◽  
Lithium Ion ◽  
Environmentally Benign ◽  
Critical Metals ◽  
Selective Recovery ◽  
Valuable Metals ◽  
Sulfation Roasting ◽  
Benign Process ◽  
P Recycling

Recycling of spent lithium-ion batteries (LIBs) has attracted intensive attention owing to their potential environmental risk and the importance of the supply of critical metals.

Supercritical CO2-induced alteration of a polymer–metal matrix and selective extraction of valuable metals from waste printed circuit boards

2020 ◽  
Vol 22 (20) ◽  
pp. 7080-7092
Author(s):  
Peng Peng ◽  
Ah-Hyung Alissa Park
Keyword(s):  
Metal Matrix ◽  
Supercritical Co2 ◽  
Printed Circuit Boards ◽  
Selective Extraction ◽  
Circuit Boards ◽  
Printed Circuit ◽  
Waste Printed Circuit Boards ◽  
Valuable Metals ◽  
Polymer Metal

Supercritical CO2-induced treatment of heterogeneous waste printed circuit boards resulted in selective recoveries of Au, Ni and Cu.

scholarly journals Extraction of Copper and Zinc from Waste Printed Circuit Boards

Recycling ◽  
2019 ◽  
Vol 4 (3) ◽  
pp. 36 ◽  
Author(s):  
Ayorinde Emmanuel Ajiboye ◽  
Folorunsho Emmanuel Olasehinde ◽  
Ojo Albert Adebayo ◽  
Olubode John Ajayi ◽  
Malay Kumar Ghosh ◽  
...  
Keyword(s):  
Printed Circuit Boards ◽  
Selective Extraction ◽  
Leach Solution ◽  
Economic Resources ◽  
Circuit Boards ◽  
Printed Circuit ◽  
Waste Printed Circuit Boards ◽  
Valuable Metals ◽  
Extraction Selectivity ◽  
Cu And Zn

The recovery of valuable metals from waste printed circuit boards (WPCBs) is crucial in order to harness their economic resources, and prevents potential environmental contamination. However, selective extraction of Cu and Zn, and the co-extraction of other metals as impurities at ambient temperature using selected lixiviants such as HCl, H2SO4, HNO3, trifluoromethanesulfonic acid (TFMS), NaOH, and mixtures of NaCl and CuCl2 was studied. It is shown that the extraction efficiencies of all the metals increased with increases in lixiviant concentrations. High selectivity of Cu and Zn toward Fe were achieved in dilute H2SO4, HNO3, TFMS, and 0.5 M NaCl + 0.1 M CuCl2, and low dissolution of Pb (<5%) was observed in all H2SO4 lixiviants. Almost 100% Zn extraction using NaOH lixiviants without trace of other metals was achieved. Therefore, 0.5 M NaCl + 0.5 M CuCl2, 1.0 M HNO3, 0.5 M H2SO4, and 1.0 M TFMS showed high extraction selectivity toward Cu and Zn with low chemical consumption, and produced pregnant leach solution rich in Cu and Zn, as well as residue containing Fe, Ni, and other metals.

scholarly journals Efficient Synchronous Extraction of Nickel, Copper, and Cobalt from Low–Nickel Matte by Sulfation Roasting‒Water Leaching Process

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Qiangchao Sun ◽  
Hongwei Cheng ◽  
Xiaoyong Mei ◽  
Yanbo Liu ◽  
Guangshi Li ◽  
...  
Keyword(s):  
Water Leaching ◽  
Nickel Matte ◽  
Leaching Process ◽  
Nickel Copper ◽  
Sulfation Roasting

Recovery of valuable metals from a low-grade nickel ore using an ammonium sulfate roasting-leaching process

2012 ◽  
Vol 19 (5) ◽  
pp. 377-383 ◽  
Author(s):  
Xin-wei Liu ◽  
Ya-li Feng ◽  
Hao-ran Li ◽  
Zhi-chao Yang ◽  
Zhen-lei Cai
Keyword(s):  
Ammonium Sulfate ◽  
Low Grade ◽  
Leaching Process ◽  
Valuable Metals

Leaching behavior of metals from a limonitic nickel laterite using a sulfation–roasting–leaching process

2009 ◽  
Vol 99 (3-4) ◽  
pp. 144-150 ◽  
Author(s):  
Xueyi Guo ◽  
Dong Li ◽  
Kyung-Ho Park ◽  
Qinghua Tian ◽  
Zhan Wu
Keyword(s):  
Nickel Laterite ◽  
Leaching Behavior ◽  
Leaching Process ◽  
Sulfation Roasting

scholarly journals Cobalt and copper recovery from the ancient flotation tailings by selective sulfation roast - leaching process

2019 ◽  
Vol 55 (3) ◽  
pp. 315-324
Author(s):  
M. Ozer
Keyword(s):  
Iron Concentration ◽  
Copper Recovery ◽  
Atmospheric Conditions ◽  
Iron Extraction ◽  
Flotation Tailings ◽  
Valuable Metals ◽  
Sulfation Roasting ◽  
Long Time ◽  
Direct Leaching

The ancient flotation tailings from Lefke, Cyprus, have a potential for non-ferrous metals such as cobalt and copper from more than 9.5 million tons of reserves containing 0.38% Cu, 0.032% Co, and 22.6% Fe. Recovery of cobalt and copper from these tailings can provide great benefits from economic and environmental perspectives. While the ancient tailings were kept long time in storage in dumps, the characteristics of the material has become different from the common Co and Cu bearing ores. In order to extract these valuable metals, a process involving combination of roasting and leaching was applied in this study. Since this process responded to recovery to some extent, an innovative technique of using Na2SO4 as a promoter during roasting was proposed. Utilizing of Na2SO4 did not provide only higher metal extractions, but also resulted in high selectivity. In the scope of the study, following the determination of the mineralogy and chemical composition of the tailings, certain processes such as direct leaching and sulfation roasting with/without additives before leaching were applied. Since low metal extractions were obtained from direct leaching, a selective sulfation process was applied on the tailings before leaching in order to produce a pregnant solution containing higher amounts of Co and Cu metals by reducing the iron concentration. When sulfation roasting was performed without any additive, the desired selectivity could not be provided, since the sample was considerably oxidized under the atmospheric conditions in the past. Therefore, the usage of Na2SO4 as an additive with the amount of 25% at a roasting temperature of 700?C was tested. Consequently, Na2SO4 improved the sulfation and resulted in higher cobalt (90.1%) and copper (71.2%) recovery during leaching. Beside this, an improvement with a selective sulfation was obtained by combined effect of Na2SO4 addition and temperature, and the iron extraction decreased from 26.1% to 3.9%.

scholarly journals Sulfation Roasting Mechanism for Spent Lithium-Ion Battery Metal Oxides Under SO2-O2-Ar Atmosphere

JOM ◽  
2019 ◽  
Vol 71 (12) ◽  
pp. 4473-4482 ◽  
Author(s):  
Junjie Shi ◽  
Chao Peng ◽  
Min Chen ◽  
Yun Li ◽  
Hurman Eric ◽  
...  
Keyword(s):  
Lithium Ion ◽  
Alternative Route ◽  
X Ray Diffraction ◽  
Water Leaching ◽  
X Ray ◽  
Gas Atmosphere ◽  
Valuable Metals ◽  
Sulfation Roasting ◽  
Ar Gas ◽  
Spent Libs

Abstract Sulfation roasting followed by water leaching has been proposed as an alternative route for recycling valuable metals from spent lithium-ion batteries (LIBs). In the present work, the reaction mechanism of the sulfation roasting of synthetic LiCoO2 was investigated by both thermodynamic calculations and roasting experiments under flowing 10% SO2-1% O2-89% Ar gas atmosphere at 700°C. The products and microstructural evolution processes were characterized by x-ray diffraction, scanning electron microscope and energy dispersive x-ray spectrometer, and atomic absorption spectroscopy. It was confirmed that Co3O4 was formed as an intermedia product, and the final roasted products were composed by Li2SO4, Li2Co(SO4)2, and CoO. The leaching results indicated that 99.5% Li and 17.4% Co could be recovered into water after 120 min of roasting. The present results will provide the basis and solid guidelines for recycling of Li and Co from spent LIBs.

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