@article{article_106072, title={Copper Recovery from Roasted Chalcopyrite Concentrate by Using Hydrochloric Acid or Water Leaching Method}, journal={International Journal of Pure and Applied Sciences}, volume={1}, pages={1–8}, year={2015}, author={Bahar, Nurdan}, keywords={Hidroklorik asit liçi, Kalkopirit konsantresi, Kavurma, Sülfatlama, Su liçi}, abstract={In this study, the sulphation roasting in atmospheric medium of chalcopyrite concentrate and hydrochloric acid or water leaching of roasted chalcopyrite concentrate were investigated. The effects of roasting temperature (200-700 oC) and roasting time (15-120 min.) on recovery of copper were also researched. The optimum roasting temperature and roasting time were determined to be 450 oC and 60 min., respectively. The roasted chalcopyrite concentrate is leached with hydrochloric acid solution or water for recovery of copper. It was shown that the copper extractions from roasted chalcopyrite concentrate are high as 85-90%, while recoveries of iron were are only 6-20%. The leaching conditions with hydrochloric acid solution or water for roasted chalcopyrite concentrate were selected as follows: liquid/solid (v/w) ratio, 10 mL/g; leaching temperature, ambiance temperature; leaching time, 15 min; concentration of hydrochloric acid solution, 0.1 N. Under these conditions, for roasting at 450 oC, recoveries of copper and iron with hydrochloric acid leaching were 89.7% and 20.1%, respectively. On the other hand, copper and iron extraction yields with water leaching were 86.8% and 13.5%, respectively. For all conditions, it was determined that the amounts of copper obtained from hydrochloric acid leaching are higher than values obtained from water leaching}, number={1}, publisher={Munzur Üniversitesi}