Engineering & Mining Journal

AUG 2018

Engineering and Mining Journal - Whether the market is copper, gold, nickel, iron ore, lead/zinc, PGM, diamonds or other commodities, E&MJ takes the lead in projecting trends, following development and reporting on the most efficient operating pr

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64 E&MJ • AUGUST 2018 mine, utilizing dry stack tailings and seawater that is completely re-circulated during the min- ing process. The long-term benefits of this are undeniable, not just for the environment, but also to create a parameter for future projects." Porto added that extending mine-life at Cerro Lindo is the company's current focus, as the integration of the Atacocha and El Por- venir mines continues to drive efficiency at the Pasco complex. Looking ahead, although Nexa lost the public tender process for the Michiquillay copper project to Southern Cop- per, the Brazilian company has a significant pipeline in Peru. The most advanced projects are Shalipayco (zinc), expected to be opera- tional from 2021, and the Magistral and Pu- kaqaqa copper deposits, planned for 2022 and 2023, respectively. More base metals In other base metals, Peru's lead production decreased by 2.4% to 306,800 mt, and tin production from Minsur, the country's only producer, also decreased by 5.3% (total out- put was 17,800 mt/y), a trend that should be reversed by the company's US$200 mil- lion B2 project to reprocess the tailings of San Rafael's operation. "B2 will add 5,000 mt/y of refined tin at a very high margin. It will increase our production profile by 20 to 30% through 2028 or 2029," said Juan Luis Kruger of Minsur. Meanwhile, Peru's production of molybde- num increased to 28,100 mt/y in 2017. Ac- cording to the United States Geological Sur- vey (USGS), Peru ranks as the world's second largest zinc producer, the fourth largest lead producer and the fourth largest molybdenum producer globally. Finally, iron ore produc- tion saw a 15% increase to 8.8 million mt, driven mainly by Shougang's ongoing expan- sion at Marcona, while Shouxin, a joint ven- ture company between Baiyin and Shougang, produced 138,000 mt of iron ore through the reprocessing of Shougang's tailings, yielding some copper as well. Ricardo Porto, CEO, Nexa Resources.

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