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2. Mining
The mining is made in open pit, in vertical 8-m benches.
Considering the physical characteristics of the material, the excavation and loading are made with the use of retro-excavators and loaders and the transportation of the ore and waste is made by 35 tons capacity trucks. The services fleet is composed by D6 tractors and tank trucks..
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3. Processing Plant
The ROM ore, duly homogenized, goes through the processes of primary crushing, crumbling and washing in a scrubber, screening in a vibratory screen deck, re-crushing and new size classification in spiral classifiers, after which washing and draining of the fine fractions take |
place. At the end of the processing, the concentrate is stocked in two homogeneous piles in the ore yard: one of lump ore (from 76,2mm to 6,35 mm) and another one of fine ore (sinter feed from 6,35mm to 0,074 mm).
The industrial plant enables the processing of 2 million tons of ROM per year, generating 825,000 tons of lump ore and 657,000 tons of sinter feed.
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Flowchart of the Improvement
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