• Resources Recycling
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• v.10 no.3
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• pp.43-50
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• 2001

Characteristics of crushing and magnetic separation on the spent batteries, were investigated for reclaiming spent carbon-zinc and alkaline manganese dioxide batteries. Crushing of carbon zinc battery was easier than that of alkaline $MnO_2$battery using impact type crusher with rotary blades. Most of magnetic products were distributed in the range of 8 mesh size. With crushing 1 ton of spent carbon-zinc and alkaline $MnO_2$batteries respectively, magnetic separation of 8 mesh oversize particles, we can get 214 kg and 235 kg of magnetic products which is composed of 94% and 88% of Fe.

• Resources Recycling
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• v.14 no.4 s.66
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• pp.17-21
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• 2005

Deep-sea Manganese nodules was treated with reduction-smelting process with adding the spent Ni-Cd battery or the cobalt contained spent catalyst for recovery of nickel and cobalt metals. The nickel in the spent Ni-Cd battery could be recovered by adding $5\%$ coke as a reducing agent regardless of the amount of battery added. However, to recover cobalt from the spent catalyst, it is require to add more coke for reduction of cobalt oxide in the catalyst. The treatment of metal wastes with manganese nodules can contribute to lower the cost for the processing of nodules and to facilitate the recycling of metal wastes.

• Clean Technology
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• v.27 no.2
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• pp.139-145
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• 2021

The purpose of this study is to recover valuable metals from spent batteries using a dry process. We focused on the effect of the smelting temperature on the composition of recovered solid and liquid products and collected gaseous products. After removal of the cover, the spent battery was left in NaCl solution and discharged. Then, the spent battery was made into a powder form through a crushing process. The smelting of the spent battery was performed in a tubular electric furnace in an oxygen atmosphere. For spent lithium-ion batteries, the recovery yield of the solid product was 80.1 wt% at a reaction temperature of 850 ℃, and the final product had 27.2 wt% of cobalt as well as other metals such as lithium, copper, and aluminum. Spent nickel-hydrogen batteries had a recovery yield of 99.2 wt% at a reaction temperature of 850 ℃ with about 37.6 wt% of nickel and other metals including iron. For spent nickel-cadmium batteries, the yield decreased to 65.4 wt% because of evaporation with increasing temperature. At 1050 ℃, the recovered metals were nickel (41 wt%) and cadmium (12.9 wt%). Benzene and toluene, which were not detected with the other secondary waste batteries, were detected in the gaseous product. The results of this study can be used as basic data for future research on the dry recycling process of spent secondary batteries.

• Proceedings of the Korean Institute of Resources Recycling Conference
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• 2002.05a
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• pp.111-112
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• 2002

• Resources Recycling
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• v.21 no.4
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• pp.16-25
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• 2012

There are several kinds of batteries such as zinc-air battery, lithium battery, Manganese dry battery, silver oxide battery, sodium-sulphur battery, lead acid battery, metal hydride secondary battery, nickel-cadmium battery, lithium ion battery, alkaline battery, etc. These days it has been widely studied for the recycling technologies of the used battery from view points of economy and efficiency. In this paper, patents and published papers on the recycling technologies of the used battery were analyzed. The range of search was limited in the open patents of USA (US), European Union (EU), Japan (JP), Korea (KR) and SCI journal articles from 1972 to 2011. Patents and journal articles were collected using key-words searching and filtered by filtering criteria. The trends of the patents and journal articles were analyzed by the years, countries, companies, and technologies.

• Journal of the Korean institute of surface engineering
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• v.56 no.4
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• pp.259-264
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• 2023

As the demand for lithium-ion batteries, a key power source in electric vehicles and energy storage systems, continues to increase for achieving global carbon neutrality, there is a growing concern about the environmental impact of disposing of spent batteries. Extensive research is underway to develop efficient recycling methods. While hydrometallurgy and pyrometallurgy methods are commonly used to recover valuable metals from spent cathode materials, they have drawbacks including hazardous waste and complex processes. Hence, alternative recycling methods that are environmentally friendly are being explored. However, recycling spent cathode materials still remains complex and energy-intensive. This study focuses on a novel approach called solid-state synthesis, which aims at regenerating the performance of spent cathode materials. The method offers a simpler process and reduces energy consumption. Optimal heat treatment conditions were identified based on experimental results, contributing to the development of sustainable recycling technologies for lithium-ion batteries.

• Membrane Journal
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• v.34 no.1
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• pp.1-9
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• 2024

The rapid expansion of the electric vehicle market has led to increased demand for battery recycling technologies. The recycling of spent batteries is crucial to stabilize the supply of rare metals, including lithium, cobalt and nickel, which are essential components for the battery industry. In addition, the technology for recycling spent batteries can help to reduce environmental and health impacts. This review presents the theoretical principles behind the metal recovery technology and the processes that are currently commercially available. It also describes trends in research and technological developments that aim to improve existing processes, and provides an overview of where recycling technology is headed.

• Resources Recycling
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• v.16 no.6
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• pp.10-19
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• 2007

The mechanical process followed by hydrometallurgical treatment has been developed in order to recover cobalt and lithium from spent lithium ion battery. In the previous study, a citrate precursor combustion process to prepare cathodic active materials from the leaching solution was elucidated. Resynthesis of electrode materials should be more valuable in spent battery recycling. Conventional slurry mixing of $LiCoO_2$ and carbon cannot make uniform distribution, and therefore the cathode cannot reach the theoretical charge-discharge capacity and is easily degraded during the charge-discharge cycling. In this study, ultra-fine $LiCoO_2$ powders has been prepared by modification of the combustion process and fabricated the enhanced cathode by modification of mixing method of $LiCoO_2$ and carbon added.

• Proceedings of the Korean Institute of Resources Recycling Conference
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• 1993.03a
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• pp.23.3-24
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• 1993

• Resources Recycling
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• v.3 no.1
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• pp.32-37
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• 1994

Mercury in spent button type batteries can be separated and recovered with vacuum distillation method. It was found that mercury in the battery began to distill at $150^{\circ}C$ and organic substanced like a packing material was decomposed at$ 300^{\circ}C$. More than 99.9% of mercury contained in the battery was distiled and separated at about $250^{\circ}C$ and 20 torr with 8 hours' reaction time. The dissolution tests of the residue after distillation showed that mercury concentration in the solution were lower than 5 ppb and this values satisfied the environ-mental condition. Also as the furnace heating rate was above $15^{\circ}C$/min, it was found that the spent battery was destroyed because of increased pressure in the battery inside.