Technologies

Bacteria consortium for sulfides bioleaching at low temperature

Advantage

  • Functionality: bacteria are used to allow bioleaching copper at low temperatures (between 5 ° C and 10 ° C), a range present in mining operations in desert areas and at high altitudes.
  • Efficiency: the use of these microorganisms allows obtaining copper without the use of complementary systems for heating batteries, or improves the efficiency of current systems.

Description

In the process of obtaining minerals, in particular copper, there’s the alternative of using microorganisms to extract it from sulphide materials of this mineral. This process, called Bioleaching, has been developed and gradually incorporated into the industry.

For the system to be more massively incorporated, it requires better performance in the environments of mining in Chile. This requires having adequate bacteria and archaea for the dissolution of metals and environmental conditions appropriate for their growth, with temperature being a fundamental parameter of the process.

The high mountain climate of our country is a difficulty for this process, since at the moment it forces to make important expenses of energy for the preheating of the solutions of leaching and a significant effort for the maintenance of the temperature in the batteries.

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