生活廢棄物 燒却 飛散재의 燒成 條件에 따른 Calcium Chloroaluminate 合成 擧動에 관한 硏究
Synthesizing Behavior of Calcium Chloroaluminate with using MSWI Fly Ash in the Different Sintering Conditions
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본 연구에서는 생활폐기물 소각 비산재를 활용하여 유리화 온도보다 낮은 소결 온도에서 calcium chloroaluminte (11CaO 7Al2O3?aCl2, 본문에서는 CCA로 표기)의 시멘트 광물을 합성 하였다. CCA를 합성 시 Al2O3 성분 부족한 양은 정수 슬러지를 부 원료로 첨가하였다. 생활폐기물 소각 비산재의 CaO 성분과 정수 슬러지를 10:7로 혼합하여 900oC-1300oC 소결 온도에 따른 CCA 합성 거동을 관찰하였다. 혼합 시료는 개방형(Opened System) 소결 조건 전기로와 밀폐형(Closed System) 소결 조건 전기로에서 온도에 따른 CCA 합성 거동을 관찰한 결과, CCA 합성은 개방형과 밀폐형 모두 1,000oC에서 합성이 되었다. 그러나 소성 분위기로 볼 때 개방형보다는 밀폐형의 소성 조건에서 CCA의 합성율이
Abstract
The aim of this study is to investigate the behaviors of synthesis of Calcium Chloroaluminte(11CaO•7Al2O3áCaCl2) under the melting temperature of municipal solid waste incineration fly ash(MSWI fly ash); 900oC-1300oC of sintering temperature. A sludge generated from a water purification plant (SW) was also used to fill up Al2O3 source, which might be deficient in MSWI fly ash. MF and SW were mixed at mixing ratio of 10 to 7, which is the mole ratio of CaO to Al2O3 of calcium Chloroaluminte. Mixed samples were sintered in the opened sintering reactor and the closed sintering reactor, respectively. The results showed that calcium chloroaluminte was formed at 1,000oC in both reactors, but the temperature of decomposition of calcium chloroaluminte depended upon sintering reactor type; an opened sintering reactor and a closed sintering reactor, owing to the vaporization velocity of Cl.
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