엽납석으로부터 캐올리나이트 합성연구

• 발행기관: 대한자원환경지질학회
• 저자명: 장영남 류경원 김유동 김문영 김원사
• 간행물 정보: 『자원환경지질』32권 4호, 373~378쪽, 전체 6쪽
• 주제분류: 자연과학 > 지질학
• 파일형태: PDF
• 발행일자: 1999.08.30

영문 초록

An investigation was conducted to find out formation and is mechanism of kaolinite from pyrophyllite under hydrothermal conditions. First, a pyropyllite sample from the Heenam district, Korea, was activated by heat-treating at 400℃ for 3 hrs. The kaolinite powder was successfully obtained by subjecting the dried feedstock to autoclaving at 200℃, 15atm, pH<1 for 5days with addition of 17.4mol/l AlCl3. Evidently, the AlCl3 addition as a mineralizer strongly promoted incorporation of Al3+ ion into pyrophyllite structure which was subdequently converted into kaolinite. It also indicated that the formation of octahedral feed solution. The final pH of the solution was decreased to ∼0.3. The transformation reaction was not noticeably accelerated when 10wt% natural kaolinite was added as the seeds, suggesting that the transformation was not reconstructional, but substitutional type.

키워드

경남 하동 산청 고령토 캐올리나이트 합성 점토광물 엽납석