REFINING
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Refining operations provide the opportunity to add value to the concentrates produced by mining and recycling. Due to the very high quality of the concentrate produced by the recycling operations, the production of metal, compared to conventional zinc smelters, can be significantly simplified. Furthermore, after the removal of zinc by dissolution, the high purity of the concentrate results in a leach residue that is so high in lead that it can be sold as a concentrate, or further converted into saleable lead chemicals. While the Big River plant is exceptionally well located as a central USA metal production site, it was a particularly attractive acquisition due to its low purchase price. However, eastern Asia is the fastest growing market for zinc and in view of ZincOx’s future recycling development projects, a dedicated zinc electro-refinery in the region is a medium term objective. As electricity is, apart from the feed, the single greatest cost in zinc metal production and since hydro generation of electricity is always likely to be the least costly, the company has reviewed potential locations for a new electro-refinery where there is likely to be plentiful long term electrical power. Similajau in Malaysia, has the potential to fulfil this prerequisite.
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Zinc Ingots