알루미늄 廢드로스를 活用한 세라믹 多孔의 製
The Preparation of porous ceramic material from aluminum waste dro
1
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
알루미늄 폐드로스를 이용한 다공성 경량세라믹의 제조조건을 제시함으로서 폐드로스의 요업용 원료로서의 재활용가능성을 살펴보았다. 알루미늄 폐드로스의 전처리 과정으로 4~7번의 수세와 900oC의 배소를 수행하여 수세와 배소 특성을 살펴보았다. 배소 후 드로스는 XRD분석에 의해 스피넬상이 형성되었다. 배소된 폐드로스는 슬러리 상태로 분쇄되었다. 분쇄시 슬러리의 분산성을 확보하여 고농도의 슬러리를 제조하기 위해 분산조제 첨가량에 따른 분산특성을 살펴보았다. 다공체는 슬러리 발포법을 사용하여 제조되었다. 발포조제로 계면활성제가 첨가되었으며 상온에서 자기체적의 2-3배로 발포된 후 성형-건조되었다. 3배 발포시켜 제조된 다공체는 기공율이 약 84%, bulk 밀도는 약 0.59 g/cm3로 측정되었고, 50~500 mm 크기범위의 기공들이 형성되었다. 화상해석결과 다공체 표면의 평균기공크기는 약 200 mm 였다. 알루미늄 폐드로스 성형체는 1150oC-1250oC에서 소결되었으며, SEM관찰결과 1200oC에서 소결특성이 양호한 것으로 나타났다.
Abstract
The recycling possibility of aluminum waste dross(AWD) as a ceramic raw material of porous light-weight material wasexamined. A aluminum waste dross was washed 4-7 consecutive times and roasted at 900oC for 1hour as pre-treatments. Theproperties of the pre-treatment of aluminum waste dross was also investigated. It was confirmed by XRD result that the spinelcrystalline was grown in AWD, after roasting. After the roasted AWD was ground in aqueous state, the sodium hexaphos-phate(SHP) as a dispersant which is used for stabilizing the concentrated slurry was added to the AWD slurry. The porous mate-rial was prepared by slurry foaming method with surfactant at room temperature. The foamed slurry volumes were 2 and 3 timeswas about 84%, bulk density was 0.59 g/cm3, the range of pore was from 50m to 50 m and mean pore size was about200 m. AWD porous material was sintered at 1150oC-1250oC. It was concluded that AWD was sintered well at 1200oC frommaterial surface observation by SEM.
참고문헌 (14)
- "Comparison of salt-free aluminum dross treatment processes", pp.61~ (2002), Conservation and Recycling 36
- "Design optimisation of aluminum recycling processes using Taguchi technique", 127 (2002)
- "Second International Symposium on Recycling of Metals and Engineered Materials Ed. by J.H.L. van et al.", pp.427~
- "알루미늄 압연 산업동향", pp.81~ (2002), 한국비철금속협회
- "알루미늄드로스의 세라믹원료화 처리기술개발" (2003)
- "Recycling in Secondary Aluminium Smelting Works treatment of Salt Slag" (1986)
- "폐알루미늄 드로스와 유리 cullet를 이용한 발포성 단열재 개발", 12(4), pp.247~259 (2003)
- "폐기물 관리정책의 평가와 개선방안 연구." (1997)
- "The quality of aluminum dross particles and cost-effective reinforcement for structural aluminum-based composites", 59 (1999)
- "Preparation of Porous Inorganic Materials by Foaming Slurry", 35(12), pp.1280~ (1998)
- "Ceramic Foams by Powder Processing", pp.1339~
- "charge and texture of active alumina powders recovered from aluminum dross tailings chemical waste", pp.137~ (2003)
- "Recovery of ethene-selective FeOx", Al2O3 ethanol dehydration catalyst from industrial chemical wastes, 2000, 83~
- "Handbook of Porous Solids", pp.1626~ (2002)