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Ore Processing Plant

The processing plant at the Samira Hill Mine has the capacity to process approximately 1.5 million tonnes of ore per year. It is of type "CIL" Carbon In Leach (Activated Coal Leaching)

 samira factory

Overview of the Samira Factory

Diesel power station

Diesel power station

Diesel power station with 6 CAT generators of 1 MW each

Water pumping station

Water pumping station

Water pumping station on the Sirba River supplying the dam

Water Retention Dam

Water Retention Dam

Water Retention Dam: 4 million m3 capacity feeding the treatment plant

I. Crushing: SINGLE TOGGLE JAW CRUSHER

I. Crushing: SINGLE TOGGLE JAW CRUSHER

Granulometric reduction by fragmentation of the ore all before grinding.

II. Crushing: wet-cycle ball mill in a closed circuit with a battery of cyclones

II. Crushing: wet-cycle ball mill in a closed circuit with a battery of cyclones

Release of the gold from its gangue for preparation for leaching.

III. Classification

Classification

Granulometric classification of the pulp leaving the mill by hydrocyclones to feed the leaching reactors.

IV. Leaching and adsorption

Leaching and adsorption

Leaching by cyanidation in oxygenated and alkaline medium of gold in the presence of activated carbon as adsorbent (CIL).

V. Acid wash

Acid wash

Elimination of metallic impurities (non-noble metals)

VI. Elution

Elution

Desorption of gold from activated carbon

VII. Electrolysis

Electrolysis

Deposit of gold on steel wool cathodes

VIII. Fusion

Fusion

Fusion of calcined steel wool

IX. Finished products: gold bars

Finished products: gold bars

Finished products: gold bars

X. Regeneration of coal

Regeneration of coal

Regeneration of activated carbon to remove organic matter