자원리싸이클링 (Resources Recycling)
- 제5권4호
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- Pages.25-31
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- 1996
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- 2765-3439(pISSN)
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- 2765-3447(eISSN)
석탄석광산 폐석의 재활용 연구
A Study on the Recycling of Waste in the Limestone Mine
- Chae, Young-Bae (Resources Utilization and Materials Division, KIGAM) ;
- Joeng, Soo-Bok (Resources Utilization and Materials Division, KIGAM) ;
- Koh, Won-Sik (Resources Utilization and Materials Division, KIGAM) ;
- Park, Je-Shin (Graduate School, Chonbuk University) ;
- Yang, Shi-Young
- 발행 : 1996.12.01
초록
유용광물의 유실과 자연환경 훼손의 원인이 되는 석회석 광산 폐석을 자체 제작한 회전식 스크린 선별기를 이용하여 시멘트 제조용 원료로의 재활용방법의 개발을 시도하였다. 자체 제작한 회전식 선별기의 분리 조작에서는 시료의 수분함유량 6wt%이하, 시료의 선별기내 체류시간 15sec, 선별기의 회전수 600rpm의 조건에서 분리된 조대산물중의 CaO 품위는 37.36wt%에서
The wastes ot l~mestone mines have been cause the extrar.ngance of the valuablz m e r a l s and destruction of the environment. Therefore, \\-c tied ta separation of calcite illid clay from the limestone mine wastes by rotntmg screen type separator made by ourselves in order to recyding such us a raw matcriala for cement maimfacture. CaO amtents in the separated coarse products increased from 37.36 wt% to 42+2 wt% at the condition ihat water content in wastes was lzss than 6wt%, the passing time of specimen in &amber was 15 semnds and the rotation speed was 6OLl qm. A process in order lo separate wastes effectively to having wide range aI part~dcs ize was cstablishcd and CaO contents of coarsc products through this process increased to 46.85 wt%. Tbis rcsult is insuEiicient to directly rcusing as a raw malerials for cement. However, it is supposed that coarse products would be able to be reuscd as a raw materials uf cement, if only it rs sclected dolomite in wastes, and really it may be possible in fields Othenvise, undcrsize products(less than 20 mm) would be able to recycling as a raw of cement bccause chcmicrl campasitions of thosc is kept almost constant v&cs on the overall process.
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