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Cajamarquilla (Electrolytic) zinc smelter

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Report summary

The Cajamarquilla smelter in Peru uses roast leach electrowin technology to produce slab zinc. Leach residue is treated by the Goethite process. The current capacity is 320kt/a slab zinc following a "twining" in 2010. There are no plans to increase this further.

What's included

This report contains

  • Document

    Cajamarquilla zinc smelter.xls

    XLS 545.50 KB

  • Document

    Cajamarquilla zinc smelter

    PDF 519.37 KB

Table of contents

  • Key facts
    • Summary
    • Key issues
    • The smelter was commissioned in 1981 under the ownership of Minero Peru. However in 1992, the Peruvian Government indicated in 1992 that the smelter would be privatised by public auction during 1994. A minimum price was set at US$120M cash plus US$40M of Peruvian debt equity and the successful bidder was expected to make investments of US$20M over four years. In the event a joint bid of US$193M by Cominco (82%) and Marubeni (17%) was successful, and the companies took over the smelter on 2 February 1995. Teck Cominco raised its share of ownership to 85% in 2003. In 2004 the Cajamarquilla smelter (Cominco and Marubeni shares) was sold to Votorantim Metais for US$210M, with additional future potential payments linked to zinc prices.
  • Location maps
  • Participation
  • Process overview
  • Products
  • Costs
  • Timeline
  • Economic assumptions

Tables and charts

This report includes 14 images and tables including:

Images

  • Detailed map
  • Flowsheet
  • Production
  • Costs: Image 1

Tables

  • Key facts: Table 1
  • Participation: Table 1
  • Feed preparation
  • Roaster & Acid plant
  • Leaching & Purification
  • Tankhouse, melting & Casting
  • Products: Table 1
  • Products
  • Costs: Table 1
  • Economic assumptions: Table 1

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