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2018 Vol.55, Issue 1 Preview Page

Research Paper

Preparation of Ceramic Bead with Nano Pore Structure by Using Gold Mine Tailing, Haenam

해남 금광산 광미를 활용한 나노기공 구조를 갖는 세라믹 비드 제작

Jiwon Yang1
,
Seongmin Kim1
,
Jaikoo Park1*
양 지원1
,
김 성민1
,
박 재구1*
1Dept. of Earth Resources and Environmental Engineering, Hanyang University
1한양대학교 자원환경공학과
* Corresponding Author
28 February 2018. pp. 29-36
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Abstract

Ceramic beads were fabricated by using mine tailing. Ceramic bead supports with porosity of 83% and pore size of about 160 µm were prepared by gel casting and method of pelletizing in oil using mine tailing as a starting material. Mesoporous silica SBA-15 having pores of 4 to 7 nm was synthesized by self-assembling method using precursor of silicate ions extracted from mine tailing. By surface coating of the synthesized SBA-15 on porous ceramic beads, bimodal porous materials with pore structures of 4~7 nm and 160 µm were prepared. Porous ceramic beads having a specific surface area of ​​about 0.7 m2/g increased up to 52 m2/g after SBA-15 surface coating and the cross section of coated pores was confirmed through scanning electron microscope (SEM). As the specific surface area and surface hydroxyl group density of SBA-15 increased, the specific surface area of ​​the coated porous ceramic beads increased.

Keywords
Mine tailing
Porous ceramic bead
SBA-15
Bimodal pore structure

광미를 활용하여 세라믹 비드를 제작하였다. 광미를 출발원료로 하여 Gel-casting과 액중조립법을 통해 기공율 83%, 기공크기 약 160 µm의 세라믹 비드 지지체를 제조하였다. 광미로부터 추출된 실리케이트 이온을 전구체로 자기조립법을 통해 4∼7 nm의 기공을 갖는 메조포러스 실리카 SBA-15를 합성하였다. 합성한 SBA-15의 다공성 세라믹 비드 표면 코팅을 통해, 4∼7 nm 및 160 µm의 기공구조를 갖는 Bimodal한 기공물질을 제작하였다. 약 0.7 m2/g의 비표면적을 갖는 다공성 세라믹 비드는 SBA-15 표면코팅을 통해 52 m2/g까지 비표면적이 상승하였으며 전자주사현미경(SEM)을 통해 코팅된 기공의 단면을 확인하였다. SBA-15의 비표면적과 표면 하이드록시기의 밀도가 높을수록 SBA-15가 코팅된 다공성 세라믹 비드의 비표면적은 커짐을 알 수 있었다.

키워드
광미
다공성 세라믹 비드
SBA-15
Bimodal 기공구조
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Information
  • Publisher :The Korean Society of Mineral and Energy Resources Engineers
  • Publisher(Ko) :한국자원공학회
  • Journal Title :Journal of the Korean Society of Mineral and Energy Resources Engineers
  • Journal Title(Ko) :한국자원공학회지
  • Volume : 55
  • No :1
  • Pages :29-36
  • Received Date : 2018-01-03
  • Revised Date : 2018-02-22
  • Accepted Date : 2018-02-23
  • DOI :https://doi.org/10.12972/ksmer.2018.55.1.029
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