Solid-gas-liquid (SGL) reactor for leaching polymetal minerals and/or concentrates based on lead, copper, zinc, iron and/or the mixtures thereof

A reactor for leaching polymetal minerals and lead, copper, zinc, iron base concentrates and/or their mixtures, in a solid-gas-liquid, three-phase suspension system (SGL), comprising:

• a. a cylindrical vertical container with an upper torispherical head and a lower torispherical head, the cylindrical vertical container having an outer surface, an inner surface, and a bottom;
• b. a stirring system coupled to the upper torispherical head of the cylindrical vertical container, formed by:
• i. an electric motor,
• ii. a torque transmitter,
• iii. a mechanical seal,
• iv. a rotating shaft axially extending through the upper torispherical head into the cylindrical vertical container and being coupled to
• a guide that is fixed to the lower torispherical head to prevent eccentric movement, and
• v. a first stirring impeller having a first stirring impeller diameter and a second stirring impeller having a second stirring impeller diameter, the first and second stirring impellers being coupled to the rotating shaft;
• and
• c. a system of coils for heat exchange, arranged over the outer and/or inner surface of the cylindrical vertical container;
• wherein:
• i. the cylindrical vertical container comprises a total volume and a useful volume, the useful volume of the vertical container being between 65% and 80% of the total volume;
• wherein the remaining volume of between 20% and 35% of the total volume forms a gas chamber above the useful volume of the cylindrical vertical container;
• ii. the cylindrical vertical container comprises a reactor diameter and a useful volume height, wherein a ratio between the reactor diameter and the useful volume height is of 0.97 to 1.03;
• iii. said cylindrical vertical container comprises on its inner surface, a deflector arrangement comprising deflectors being equidistantly distributed in the inner surface of the cylindrical vertical container;
• iv. the first and second stirring impellers are each of a different impeller type;
• wherein, when a suspension container and thereby provides a suspension level, the first stirring impeller is located in the shaft just below the suspension level and the second stirring impeller is located in the shaft lower part at a height from reactor bottom of ⅓ of the second stirring impeller diameter.