Principal Refined Products

Metallic zinc

Plant Capacity

344.4 ktpy






The Cajamarquilla smelter is located in the district of Lurigancho/Chosica in Lima, Peru, and is accessible by road, 99.92% owned by Nexa Resources.


Our Cajamarquilla smelter, which is wholly owned by Nexa CJM, is located in Peru and began operating in 1981. It is currently the largest zinc smelter in Latin America and was the 5th largest zinc smelter in the world in 2021, according to Wood Mackenzie. Cajamarquilla uses Roast-Leach-Electrowinning technology. With a nominal production capacity of 344.4 thousand tonnes of contained zinc per year, Cajamarquilla produced 328.1 thousand tonnes of zinc metal available for sales in 2021 and 305.4 thousand tonnes in 2020. In 2021, 36.9% of the zinc contained in raw material used by Cajamarquilla was sourced from our mines in Peru and 63.1% was purchased from third parties or obtained from secondary feed materials.


  2021 2020 2019
Production kt 328.1 305.4 340.4
Zinc Recovery % 94.3 93.7 94.1
Sales kt 333.4 302.9 340.8
Conversion cost US$/lb 0.24 0.24 N/A
Cash Cost, net of by-product credits US$/t 2,562.3 1,876.4 2,219.9
Cash Cost, net of by-product credits US$/lb 1.16 0.85 1.01
CAPEX US$ mm 39.6 27.6 40.0