FLOW LINE FOR YEAR-ROUND HEAP LEACHING OF METALS FROM ORES Russian patent published in 2013 - IPC E21B43/28 

FIELD: mining.

SUBSTANCE: flow line for year-round heap leaching of metals from ores includes the following serially installed components one after another: ore pile, a drainage system, a reinforced concrete pan, a pan board, a pump, a pipeline, a device for solution heating, a sprinkling system covered with a heat-shielding material, a device for collection of saturated solutions, a pump with a discharge pipeline, a complex of devices for collection and processing of saturated solutions. The line is additionally equipped with a heat and gas generator of a steam and air mixture, a system of vertical and inclined perforated pipes, installed in the pile and equipped with temperature measurement sensors, connected with a flexible link to a device of process monitoring and control. The heat and gas generator inlet is connected to the device of process monitoring and control, and the outlet is connected with nozzles fixed on top of perforated pipes. The device for collection of saturated solutions is arranged in the form of a sieve and two serially installed modules one after the other, the first of which at the inlet is connected to the sieve, and the second one equipped with heating elements for solution heating, at the outlet it is connected with the pump and the discharge pipeline, connected to the complex of devices for collection and processing of saturated solutions, at the same time the complex is installed in a heated room.

EFFECT: invention makes it possible to increase efficiency of a process of metal leaching from ores in the period of negative temperatures, environmental safety and reliability of a flow line.

2 cl, 2 dwg