• Transactions of the Korean Society of Machine Tool Engineers
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• v.15 no.1
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• pp.70-75
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• 2006

This paper represents a study on disassembly sequence generation system for automobile parts. This system is practically very useful because proper disassembly sequence of end-of-life product becomes crucial as take-back obligations are imposed for environmental reasons. Therefore a disassembly sequence generation system is suggested to automatically derive all the feasible disassembly sequences from the assembly modeling files. As a result, in consideration of the all parts and subassemblies the optimum disassembly sequence is generated. And the optimum disassembly sequence for a certain part or subassembly can be also suggested.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2003.11a
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• pp.225-228
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• 2003

환경 친화적인 공급 사슬 관리에 관한 주제는 최근 기업들이 보다 적극적으로 생산성과 기업 이미지를 높이고 총비용을 절감하기 위한 목적으로 적극적인 관심을 가지게 되었다. 적극적이란 공급 사슬 전체에 걸쳐 환경 친화적인 제품을 개발하고, 효율적인 리사이클링 활동을 기업의 중요한 전략으로 하고자 하는 것이다. 본 논문에서는 이러한 환경 친화적 공급 사슬 관리의 배경, 논리적 근거, 전략 그리고 공급 사슬을 구성하고 있는 여러 요소들의 친 환경적인 대응 방법 및 시스템을 전체적인 공급 사슬 관점에서 조명하고 분석해 보고자 한다.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2005.10a
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• pp.452-455
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• 2005

Today the tastes of consumers change rapidly and the kinds of the products become diverse. Therefore the product life cycle becomes shorter and shorter. Moreover the save of resources and the recycling for the environmental preservation are the essential theme. On this the necessary information for the product development increases enormously. For the right use of the information the design process should be supported by the proper design tool. For this the 'design catalogue system for recycling' is suggested here. This system consists of four parts, that is, 'the existing automobile system database', 'working principle database', 'assessment system of the ease of disassembly' and 'one's own product development database' By the use of this system the product development period could be reduced about 30% drastically.

• Resources Recycling
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• v.27 no.1
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• pp.3-13
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• 2018

3D printing, also known as Additive Manufacturing (AM), is being positioned as a new business model of revolutionizing paradigms of existing industries. Launched in early 2000, 3D printing technology for architecture has also advanced rapidly in association with machinery and electronics technologies mostly in the United States and Europe. However, 3D printing systems for architecture require different mechanical characteristics from those of cement/concrete raw materials used in existing construction methods. Accordingly, in order to increase utilization of raw materials produced in the cement and resource recycling industry, it is necessary to develop materials processing and utilization technology, to secure new property evaluation and testing methods, and to secure database related to environmental stability for a long period which aims to reflect characteristics of an architectural 3D printing technology.

• Proceedings of the KSME Conference
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• 2005.11a
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• pp.226.1-226.1
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• 2005

• Proceedings of the Korean Institute of Resources Recycling Conference
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• 1993.03a
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• pp.4.1-4
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• 1993

• 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.28 no.2
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• pp.3-13
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• 2019

Aluminum is the most abundant metal and the second most plentiful metallic element in the earth's crust, after silicon. Aluminum is a light, conductive, and corrosion resistant metal with strong affinity for oxygen. However, the primary aluminum production process is highly energy intensive. The recycling of aluminum scrap reduces the energy consumption and environmental burden, comparing to the primary metal production. However, the amount of the recovered metal from scrap is limited because of the difficulties to remove the impurities in the scrap. This work provides an overview of the aluminum production and recycling process, from the preparation of alumina to the scrap upgrading and the melting process.

• Journal of the Korea Society for Simulation
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• v.22 no.4
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• pp.129-138
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• 2013

This paper studies the improvement of a pre-processing line for waste refrigerators in a metropolitan recycling center(MRC). We performed ARENA modeling and simulation by using work analysis and time measurement on the current processing line. Combined this result with some practical experiences from workers, we generated 3 alternatives to improve the current line and evaluated them by using ARENA simulation. The final decision selected consists of changing 2-line process into 1-line and having a separate cell-line for collecting refrigerant. Currently, the result of this study was applied to MRC by improving cycle time, throughput, and space utilization compared to the previous one.

• Environmental engineer
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• v.19 s.203
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• pp.80-81
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• 2003