CPT column을 이용한 석탄 품위향상 기술 연구 = Coal Grade Improvement Technology Using CPT Column

다국어 초록 (Multilingual Abstract)

Development of commercial technology for expansion in domestic anthracite coal utilization is urgent due to the mass reserves of low grade anthracite in Korea. Therefore, a series of experiments were conducted in this study to resolve this problem using CPT column in order to check the possibility of high-quality production for the fine coal that is impossible to treat by dry separation method. Particle size analysis was conducted for the sample using disk mill and vibro screen, and preliminary experiment was conducted for +100 mesh of the product obtained through this process by batch flotation(Sub-A type). Comparison experiment was conducted for -100 mesh and 100 × 325 mesh by each factor-specific condition applying to CPT Column. The result of CPT column flotation by using the proper reagent confirmed through batch flotation was ash rejection 83.15% and recovery 91.44% under the conditions of pulp density 5%, frother temperature 26°C, Kerosene collector (200mL/ton), Pine oil frother (1L./ton), Lime depressant (3kg/ton), air flow rate (1,400mL/ton) and wash water (300mL/ton).

참고문헌 (Reference)

1 유승우, "연탄재 부유선별에서 고정탄소의 산화가 유상포수제 첨가량에 미치는 영향" 한국자원공학회 46 (46): 582-588, 2009

2 최우진, "석탄의 고품위화를 위한 선별성 향상에 관한 연구" 48 : 147-156, 1994

3 지식경제부, "국내외 부존 철, 몰리브덴, 석탄자원 확보를 위한 활용기술 개발" 340-, 2009

4 이강문, "광물처리공학" 반도출판사 219-305, 1985

5 Wills, B. A, "Mineral processing technology" Elsevier 290-306, 2006

6 "Finch and Dobby, 1990; Groopo and Parekh, 1990;Goodall and O`Connor, 1992; Tao etal., 2000"

7 R. H. Yoon, "Development of The Microbubble Column Flotation Process" 1987

8 Julius B. R. Rubinstein, "Column Flotation Processes, Designs and Practices. Vol. 2" Gordon and Breach Science Publishers 143-, 1995

9 J. A. Finch, "Column Flotation" Pergamon Press 157-, 1989

10 M. D. Brown, "A Laboratory Stirred Ball Mill for Fine Grinding of Coal" 1984