자동차 주조공정의 폐 주물사 재생기술 개발

허기수¹, 홍성준¹, 배유진¹, 조경래¹, 소이섭^*

Development of Waste Sand Recycling Technology in the Automotive Casting Process

Kisoo Heo¹, Sungjoon Hong¹, Yujin Bae¹, Kyungrae Cho¹, Iesub So^*

¹현대자동차(주)

^*(주) 우리

¹Hyundai & Kia Motors

^*Woori

ⓒ Copyright 2008 The Korea Society for Life Cycle Assessment. This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Published Online: Aug 31, 2008

요약문

자동차 산업에서, 주조공정의 수요가 지속적으로 증가하고 있다. 주조공정에서 발생한 폐주물사 는 일반적으로 동제련 flux와 시멘트 제조 공정에 재사용 되어왔다. 그러나 폐주물사에는 고순 도의 SiO₂가 농축되어 있기 때문에 이러한 형태의 재활용은 환경적으로나 경제적으로 적절하 지 못하다. 본 연구에서는 열처리 노(爐)와 표면처리공정을 통한 폐주물사의 재활용기술을 개발 하였고, 기존 재활용 시스템과의 환경성 비교 LCA를 수행하였다.

Abstract

In the automotive industry, the need of casting process is continuously increased. The end of life casting sand from the casting process is currently recycled for the copper smelting flux and cement manufacturing process, but this kind of recycling is not appropriate both environmentally and economically since waste sand has high concentration of SiO₂. In this study, waste casting sand recycling technology was developed through continuous heating furnace and surface treatment process, and environmental assessment using by Life Cycle Assessment was performed to compare current system and new recycling system.