| 학회 |
한국화학공학회 |
| 학술대회 |
2016년 가을 (10/19 ~ 10/21, 대전컨벤션센터) |
| 권호 |
22권 2호, p.1665 |
| 발표분야 |
미립자공학 |
| 제목 |
Ozone Effect on Leqching Kinetics for the Recovery of Copper in Aqueous Ferric Chloride Solution from Chalcopyrite Mineral |
| 초록 |
The leaching experiment was conducted at the condition of a concentration of slurry density 20 g/L of 0.1M FeCl3 with 0.1M HCl aqueous solution under the condition of agitation of 500 rpm and temperature ranging from 50 to 99℃. The copper component included in the used chalcopyrite mineral concentrate was a 41.5% and showed the yield of 77% after the basic leaching. For the improvement of leaching efficiency, ozone was added to the leaching reactor. From the result, the leaching yield was increased to 90% at the same condition of the basic leaching. All the leaching mechanism was determined by shrinking core model with a constant size and the leaching rate was determined by product and ash layers diffusion as the overall rate determining step in the cases of basic and ozone leaching. On the other hand, in the case of ozone-assisted leaching, the rate was determined by the same mechanism. By using the Arrhenius expression, the apparent activation energy of the basic leaching was found to be 33 kJmol-1 but the apparent activation energy of the ozone-assisted leaching was found to be 31 kJmol-1. |
| 저자 |
김진호1, 유승준1, 김성래1, 이세일1, 윤호성2, 김철주2, 정경우2, 이은지2, 신선명2, 이진영2
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| 소속 |
1서남대, 2한국지질자원(연) |
| 키워드 |
분체 및 미립자 공학 전반 |
| E-Mail |
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| 원문파일 |
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