Selective leaching of arsenic from enargite concentrate using alkaline leaching in the presence of pyrite
作者： Tengfei Li , Yansheng Zhang , Bo Zhang , Jiaming Zhang , Wenqing Qin
DOI: 10.1016/J.HYDROMET.2018.09.010
关键词:
摘要: Abstract Alkaline leaching is a promising treatment to extract arsenic from enargite. This study investigates the feasibility of enargite concentrate in presence pyrite alkaline solution with sodium hydroxide only. Single factor and orthogonal experiments were performed determine effect concentration, temperature, time liquid-to-solid ratio on dissolution optimize conditions. The results indicate that concentration has greatest enargite, while smallest effect. Finally, over 99% was removed using optimal Characterization leach residue by XRD SEM-EDS analyses showed converted into non‑arsenic copper sulfides such as anilite (Cu7S4), geerite (Cu8S5) djurleite (Cu31S16). research applicable solving problems related pollution.
sci-hub.se 参考文章(13)
G.D. Senior, P.J. Guy, W.J. Bruckard, The selective flotation of enargite from other copper minerals — a single mineral study in relation to beneficiation of the Tampakan deposit in the Philippines International Journal of Mineral Processing. ,vol. 81, pp. 15- 26 ,(2006) , 10.1016/J.MINPRO.2006.06.001
M. Delfini, M. Ferrini, A. Manni, P. Massacci, L. Piga, Arsenic leaching by Na2S to decontaminate tailings coming from colemanite processing Minerals Engineering. ,vol. 16, pp. 45- 50 ,(2003) , 10.1016/S0892-6875(02)00262-5
J Viñals, A Roca, M.C Hernández, O Benavente, Topochemical transformation of enargite into copper oxide by hypochlorite leaching Hydrometallurgy. ,vol. 68, pp. 183- 193 ,(2003) , 10.1016/S0304-386X(02)00200-1
William Tongamp, Yasushi Takasaki, Atsushi Shibayama, Selective leaching of arsenic from enargite in NaHS–NaOH media Hydrometallurgy. ,vol. 101, pp. 64- 68 ,(2010) , 10.1016/J.HYDROMET.2009.11.020
L. Curreli, C. Garbarino, M. Ghiani, G. Orrù, Arsenic leaching from a gold bearing enargite flotation concentrate Hydrometallurgy. ,vol. 96, pp. 258- 263 ,(2009) , 10.1016/J.HYDROMET.2008.10.013
Dimitrios Filippou, Pascale St-Germain, Tassos Grammatikopoulos, RECOVERY OF METAL VALUES FROM COPPER—ARSENIC MINERALS AND OTHER RELATED RESOURCES Mineral Processing and Extractive Metallurgy Review. ,vol. 28, pp. 247- 298 ,(2007) , 10.1080/08827500601013009
M.C. Ruiz, L. Grandon, R. Padilla, Selective arsenic removal from enargite by alkaline digestion and water leaching Hydrometallurgy. ,vol. 150, pp. 20- 26 ,(2014) , 10.1016/J.HYDROMET.2014.09.004
F. Parada, M.I. Jeffrey, E. Asselin, Leaching kinetics of enargite in alkaline sodium sulphide solutions Hydrometallurgy. ,vol. 146, pp. 48- 58 ,(2014) , 10.1016/J.HYDROMET.2014.03.003
L. Curreli, M. Ghiani, M. Surracco, G. Orrù, Beneficiation of a gold bearing enargite ore by flotation and As leaching with Na-hypochlorite Minerals Engineering. ,vol. 18, pp. 849- 854 ,(2005) , 10.1016/J.MINENG.2005.01.023
Graham Long, Yongjun Peng, Dee Bradshaw, Flotation separation of copper sulphides from arsenic minerals at Rosebery copper concentrator Minerals Engineering. ,vol. 66, pp. 207- 214 ,(2014) , 10.1016/J.MINENG.2014.04.003