نوع مقاله : علمی-پژوهشی
نویسنده
استادیار، گروه مهندسی معدن، دانشکده مهندسی شهید نیکبخت، دانشگاه سیستان و بلوچستان، زاهدان
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسنده [English]
A study of the processing of copper sulfide-oxide ore by sulfidation and flotation with xanthate was conducted for a sample from the Cheshme-Hadi mine located in Bardaskan city, Razavi Khorasan province. The copper content in this soil was 0.65%, of which 70% was in the form of copper oxide minerals, including malachite and, to a lesser extent, azurite and atacamite, and the rest was in the form of copper sulfide minerals, including chalcocite and bornite, and waste minerals of aluminosilicates and clays. The results showed that by increasing the pH to 11 for copper oxide and 10.5 for copper sulfide, copper recovery increases. Separate flotation of copper sulfide and copper oxide did not significantly improve copper recovery. If lime and activator are added to the flotation, the sulfidation process of copper-bearing minerals is better, which increases the recovery of copper oxide. The optimal conditions for copper oxide recovery in the Cheshme-Hadi mine were obtained as follows: 100 g/ton amyl xanthate, pH 11 and 1000 g/ton sodium sulfide, solids percentage 30%, grinding time 15 minutes (d80=65 μm). Under these conditions, the recovery of copper oxide, sulfide and total copper was 76, 82 and 79%, respectively.
کلیدواژهها [English]