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논문 기본 정보

자료유형
학술저널
저자정보
윤철우 (국립환경과학원) 엄남일 (국립환경과학원) 전태완 (국립환경과학원) 신선경 (국립환경과학원)
저널정보
한국폐기물자원순환학회 한국폐기물자원순환학회지 한국폐기물자원순환학회지 제36권 제6호
발행연도
2019.1
수록면
549 - 559 (11page)

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초록· 키워드

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In this study, an environmental hazardous impact assessment for the ladle furnace slag generated in the steelmakingprocess was conducted. The purpose of this study was to examine the possibility of expanding the recycling opportunitiesfor ladle furnace slag. First, the physical and chemical properties were reviewed, and it was found that CaO accountedfor more than 50% of the slag. Therefore, it was deemed necessary to assess the health hazards associated with therecycling of the slag. Because CaO is highly alkaline, inhalation and eye contact are a concern for workers during themanufacturing, storage, and transportation of the accelerator product. To avoid this, workers should wear personal safetygear and prevent damage. Applying an environmental hazardous impact assessment for non-media contact, no itemexceeded the standards for heavy metal content in cement replacement material following recycling. Because the contentcriteria are defined for only five elements (As, Cd, Cu, Pb, and Hg), it is believed that using ladle furnace slag as a cementsubstitute will not contravene the Waste Control Act. The results for fluoride were close to the criteria for the warrenlevel of soil contentment prescribed under the Soil Environment Conservation Act. Therefore, the environmental impactof using ladle furnace slag as an alternative material for accelerator products was considered to be minimal. However,it is necessary to ensure safety via continuous environmental monitoring when it is used in accelerator products. Afterconducting an environmental hazardous impact assessment for media contact, it was deemed necessary to review the agingprocess of ladle furnace slag. The slag may be used for recycling after aging in accordance with the “Guidelines for theRecycling of Steel Slag and Coal Ash for Emission Operators.”

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