The Process
At
the moment, we are processing 50t/day of ore from two different shafts.
One at 1250 level and the other at 1450 level, which gives us the great
advantage to develop six more mine levels right now. The company is
currently extracting ore from three different veins, and with new
acquisitions currently on the way, the company will soon double
production after raising more capital to improve the capacity of the
processing plant.
The capital raised will be invested in the following Gold circuit process:
- The dump trucks unload the ore in the coarse hopper.
- The crushing system has 2 units: A primary 10”x 16” jaw crusher and a secondary 3' cone crusher that delivers the material to 85% 1/2” to the fine hopper.
- The grinding section – classification, uses a 6' x 6’ ball mill that works in an open circuit and at the same time creates a closed circuit with the 5'x5' ball mill.
- The cyaniding begins in the ball mill where 50% of the required reagent is fed.
- The cyaniding continues in two pregnant solution tanks of 18'x18' and 15'x15' during a total time of 24 hours (green tanks). Previous alkalization took place with ph 10, 5.
- Capture of dissolved gold with activated carbon in 5 tanks of 11'x11’.
- The activated carbon is brought to the elution system for its treatment and soon given back to the Plant for its reuse.
- End product: Gold Bars.
- Tailings are deposited in the respective tailing ponds and the surplus cyanide is destroyed.
The 20t/d processing plant that is processing material at the moment is using four primary Chilean mills with three wheels to grind the ore and then the free gold is recovered on sluice boxes. The tailings are sent by the slurry pump to the ball mill and then to the CIP agitating tanks.