Technical And Economic Analysis Of Iron Oxide Copper-Gold Type (IOCG) Orebody In Lanniping Copper Mining Area,Dongchuan, Yunnan Province

Dongchuan Copper Mine is a famous production of copper, enjoying the days of the South copper in China. From the Han Dynasty to in the early days of foundation of China about2000years product copper over100tons; After P. R of China founded, the former the Dongchuan Bureau of Mines from1960to2000, produced nearly500,000tons of copper concentrate containing copper. Dongchuan copper deposit, mined for many years, only Luoxue Copper Mine recycling iron ore in1983～1985, Yinmin and Lanniping copper mine areas didn't use associated iron. Fang Weixuan (2009) compared the characteristics of the iron oxide copper gold deposit in the Baixila section of Lanniping depth, Dongchuan, Yunnan province to iron oxide copper-gold deposits in Copiapo, Chiel.The delineation of the iron (titanium) oxide copper-gold orebodies in the Baixila section of Lanniping depth. And the iron oxide copper-gold deposit and its associated gold and silver recovery were paid some attention, but the probe received iron oxide copper-gold orebody don't carry out the technical and economic evaluation.Iron oxide copper-gold (IOCG) deposits have more industrial exploitation of the value of minerals (Cu, Fe, Au, U, REE, Ag), its exploration costs and the cost of mining close to other types of deposits; Although mineral processing and smelting process is more complex than similar minerals, the return on investment rate is significantly higher than comparable single minerals; More importantly, different minerals can withstand industrial wheeled cycle stagnation brought about by industrial risk. Lanniping iron oxide copper-gold (IOCG) deposit the same with multi-minerals (Cu-Fe-Ti-Au-Ag), has considerable deposits of industrial value. Lanniping copper since1960put into operation, mainly produces copper concentrate, the total associated elements of recycling not take it seriously, so Lanniping iron oxide copper-gold deposit (IOCG) should be paid attention to study on technical and economic evaluation.On the basis of Fang Weixuan and others research results, make a detailed investigation of iron oxide copper-gold type (IOCG) orebody at Lanniping, do their data consolidation put in order and system analysis. External features and internal features of iron oxide copper-gold orebody in No. Ⅰ and Ⅱ iron-copper belt take a more detailed introduction, provides the basis for the exploration and utilization of iron oxide copper-gold orebody. a detailed evaluation of Lanniping iron oxide copper-gold (IOCG) orebody economic benefits. Using the yield of breakeven contrast analysis obtained the breakeven yield of a comprehensive recovery of copper, gold and silver less than the recovery of a single copper breakeven yield of20,000tons, if the profit is quota, comprehensive recovery of copper, gold and silver can also extend a certain mine life; its profit space6.84%higher than the recovery of single copper, and that comprehensive recycling can adapt to market changes, and the risk-resisting ability is stronger. Comprehensive recovery of associated gold and silver under the premise to ensure that the mine profitable, multi-exploitation of low-grade ore to mine both the rich and the poor ore.By sensitivity analysis to identify key sensitive factors, give the corresponding measures for effective controlling and reducing business risk and providing a reference. The technical and economic evaluation shows that a total of associated minerals in the mining business process can play operating synergies. Therefore, the technical and economic evaluation of Lanniping copper mine area iron oxide copper-gold orebody, it can provide a reference for Lanniping copper exploration investment in the future, make investment decisions more scientific, reduce and avoid to lapse investment decisions.