| 학회 | 한국화학공학회 |
| 학술대회 | 2014년 봄 (04/23 ~ 04/25, 창원컨벤션센터) |
| 권호 | 20권 1호, p.258 |
| 발표분야 | 미립자공학 |
| 제목 | Leaching Kinetics of Strontianite Concentrated from Magnetite Ore to Strontium Chloride in Aqueous Hydrochloric Acid Condition |
| 초록 | The leaching kinetics of strontianite(SrCO3) in hydrochloric aqueous solution (HCl) was investigated for the purpose of recovery of strontium chloride from strontianite concentrate. The strontium component in the raw material was concentrated from 5.57% to 23. 6% by dressing treatments with a cone crusher, ball milling, table gravity separator, and flotation from a magnetite ore collected from Hongcheon in South Korea. The leaching reaction was conducted under the condition of 0.64 M HCl corresponding to the stoichiometric ratio of strontium existing in raw material, a pulp density of 114 g/L, an agitation speed of 520 rpm, and a temperature range of 30 to 60℃. After the leaching of 3 h at 60℃, the yield was obtained to the maximum value of a 95 %. Leaching kinetics was applied by the particle size reducing shrinking core model and the overall rate controllig step was determined by surface reaction. By using the Arrhenius expression, the apparent activation energy was found to be 41 kJmol-1 |
| 저자 | 유승준1, 김지혜1, 김형섭1, 이세일1, 조아람1, 이수정1, 윤호성2, 김철주2, 이진영2, 정경우2, 신선명2 |
| 소속 | 1서남대, 2한국지질자원(연) |
| 키워드 | Leaching kinetics; Strontium concentrate; Shrinking core model; Strontium chloride; Hydrochloric acid; Chemical reaction |
| 원문파일 | 초록 보기 |
